JP5289991B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to a portable electronic device having a step counting function.

  2. Description of the Related Art Conventionally, a mobile electronic device such as a mobile phone is sometimes equipped with an acceleration sensor in order to detect a state such as a posture or an operation of the own device. Such a portable electronic device is configured, for example, to activate a predetermined application or change the control content in accordance with each state detected by the acceleration sensor.

  Various applications using acceleration sensors have been proposed. For example, Patent Document 1 proposes a mobile phone having an application program for measuring the number of steps using acceleration detected by an acceleration sensor.

  Here, an example of an algorithm for measuring the number of steps based on acceleration will be described. Although there are differences in the way of walking depending on the person, it is known that in many cases, a cycle in which the acceleration becomes higher than 1G is repeated after the acceleration becomes lower than 1G. Therefore, if this cycle is counted, the number of steps can be measured.

  Specifically, for example, the following procedure is repeated. That is, (1) it detects that the acceleration is lower than 1G. (2) Detect that the acceleration is higher than 1G and that the difference from the acceleration detected in (1) is greater than a certain value. (3) If (2) is established within a certain time, it is counted as the number of steps. (4) Count the number of steps or return to (1) after a certain time and repeat.

JP 2005-167758 A

  By the way, in recent years, with the increase in the number of functions of portable electronic devices, many portable electronic devices having a function of outputting sound such as music from a sound output unit (speaker) have appeared. The speaker generates vibration every time a sound is output.

  Then, in the mobile phone of Patent Document 1, an operation other than the walking operation, that is, an acceleration generated by the vibration of the speaker is synthesized and detected by the acceleration sensor. As a result, the acceleration threshold value counted as the number of steps may be exceeded, which may cause an erroneous number of steps to be measured.

  An object of the present invention is to provide a portable electronic device that can suppress erroneously measuring the number of steps when vibration is generated by an audio output unit.

  The portable electronic device according to the present invention includes an acceleration detection unit that detects acceleration, a sound output unit that outputs sound based on sound data, and the acceleration detection based on a sound output state output from the sound output unit. A first calculation unit that calculates a corrected acceleration obtained by correcting the first acceleration detected by the unit.

  The portable electronic device according to the present invention further includes a second calculation unit that calculates a predetermined physical quantity based on the output state of the voice, and the first calculation unit includes the predetermined physical quantity and the first physical quantity. It is preferable to calculate the corrected acceleration based on the acceleration.

  Moreover, it is preferable that the predetermined physical quantity is a second acceleration generated based on the output state of the sound.

  Further, it is preferable that the predetermined physical quantity is a volume generated based on an output state of the sound.

  Further, it is preferable that the first calculation unit calculates the corrected acceleration by adding an acceleration having a phase opposite to that of the second acceleration to the first acceleration.

  Further, the second calculation unit sequentially calculates the predetermined physical quantity in time series, and the audio output unit is a voice based on the audio data after the predetermined physical quantity is calculated by the second calculation unit. It is preferable that the first calculation unit calculates the corrected acceleration simultaneously with the output of the sound based on the sound data after the predetermined physical quantity is calculated.

  The portable electronic device according to the present invention further includes a storage unit that stores the first acceleration and the predetermined physical quantity in time series when the audio output unit is outputting audio, Preferably, the first calculation unit calculates the corrected acceleration based on the first acceleration stored in the storage and the predetermined physical quantity.

  The portable electronic device according to the present invention further includes an operation unit that receives an input from the outside, and the first calculation unit is triggered by the operation unit receiving a predetermined operation input. Is preferably calculated.

  The portable electronic device according to the present invention further includes a display unit, and the predetermined operation input is a part or all of an instruction operation for causing the display unit to display a calculation result by the first calculation unit. It is preferable.

  The portable electronic device according to the present invention further includes a first housing and a second housing, and the predetermined operation input is the first housing and the second housing. It is preferable that the operation input is deformed from a closed state in which the first housing and the second housing are overlapped to an open state in which the first housing is opened.

  ADVANTAGE OF THE INVENTION According to this invention, when vibration generate | occur | produces by the audio | voice output part, it can suppress that the step count is measured accidentally.

1 is an external perspective view of a mobile phone according to a first embodiment. It is a block diagram which shows the function of the mobile telephone which concerns on 1st Embodiment. It is a block diagram which shows the function of CPU which concerns on 1st Embodiment. It is a flowchart which shows the process of CPU which concerns on 1st Embodiment. It is a figure which shows the acceleration data and correction | amendment acceleration data in case a speaker vibrates in the stationary state of the mobile telephone which concerns on 1st Embodiment. It is a figure which shows the acceleration data in case the speaker vibrates while the user is walking in the mobile phone according to the first embodiment. FIG. 7 is a diagram separately showing an acceleration component generated by walking motion and an acceleration component generated by speaker vibration in the acceleration data of FIG. 6. It is a block diagram which shows the function of CPU which concerns on 2nd Embodiment. It is a flowchart which shows the process of CPU which concerns on 2nd Embodiment. It is a block diagram which shows the function of CPU which concerns on 3rd Embodiment. It is a flowchart which shows the data acquisition process of CPU which concerns on 3rd Embodiment. It is a flowchart which shows the step count processing of CPU concerning 3rd Embodiment.

<First Embodiment>
Hereinafter, a first embodiment which is an example of a preferred embodiment of the present invention will be described. In addition, although the mobile telephone 1 is demonstrated as an example of a portable electronic device, this invention is not limited to this. For example, the present invention can be applied to various portable electronic devices such as PHS (Personal Handyphone System), PDA (Personal Digital Assistant), and game machines.

  FIG. 1 is an external perspective view of a mobile phone 1 according to the present embodiment. FIG. 1 shows a so-called foldable mobile phone, but the mobile phone according to the present invention is not limited to this. For example, a sliding type in which one casing is slid in one direction from a state in which both casings are overlapped, or a rotary type in which one casing is rotated around an axis along the overlapping direction ( Turn type), or a type (straight type) in which the operation unit and the display unit are arranged in one housing and does not have a connecting unit.

  The mobile phone 1 includes an operation unit side body 2 (first housing) and a display unit side body 3 (second housing). The operation unit side body 2 includes an operation unit 11 and a microphone 12 into which a voice uttered by a user of the mobile phone 1 is input on the surface unit 10. The operation unit 11 includes a function setting operation button 13 for activating various functions such as various setting functions, a telephone book function, and a mail function, and an input operation button 14 for inputting numbers of telephone numbers, mail characters, and the like. , And a determination operation button 15 for performing determination and scrolling in various operations.

  The display unit side body 3 includes a display unit 21 for displaying various types of information on the surface unit 20 and a receiver 22 for outputting the voice of the other party of the call.

  Further, the upper end portion of the operation unit side body 2 and the lower end portion of the display unit side body 3 are connected via a hinge mechanism 4. In addition, the mobile phone 1 relatively rotates the operation unit side body 2 and the display unit side body 3 which are connected via the hinge mechanism 4, so that the operation unit side body 2 and the display unit side body 3 are rotated. The body 3 can be in an open state (open state), or the operation unit side body 2 and the display unit side body 3 can be folded (closed state). Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other.

  FIG. 2 is a block diagram showing functions of the mobile phone 1 according to the present embodiment. As shown in FIG. 2, the mobile phone 1 includes an operation unit 11, a display unit 21, a CPU 30, a communication unit 31, an antenna 32, a memory 33, a speaker 34 (audio output unit), and an acceleration sensor 35. (Acceleration detection unit) and an open / close sensor 36.

  The CPU 30 controls the entire mobile phone 1, and performs predetermined control on the display unit 21, the communication unit 31, the speaker 34, and the like, for example. In addition, the CPU 30 receives input from the operation unit 11, the acceleration sensor 35, the open / close sensor 36, or the like, and executes various processes. Then, the CPU 30 controls the memory 33 to read various programs and data and write data when executing processing.

  The display unit 21 performs predetermined image processing according to the control of the CPU 30. Then, the processed image data is stored in the frame memory and output to the screen at a predetermined timing.

  The communication unit 31 communicates with an external device in a predetermined use frequency band (for example, 800 MHz). Then, the communication unit 31 demodulates the signal received from the antenna 32, supplies the processed signal to the CPU 30, modulates the signal supplied from the CPU 30, and transmits the signal from the antenna 32 to the external device.

The memory 33 includes, for example, a working memory and is used for arithmetic processing by the CPU 30. In addition, the memory 33 stores a program for executing the step count measurement process according to the present embodiment, various data, and the like. Specifically, along with audio data such as music, acceleration data and the like generated when the audio data is output from the speaker 34 are stored. Note that the memory 33 may also serve as a removable external memory.
The acceleration data may be calculated by the CPU 30 without being stored.

  The speaker 34 outputs an audio signal processed by an audio control unit (not shown) included in the CPU 30 or provided separately. This audio signal is obtained by performing predetermined audio processing on the signal supplied from the communication unit 31 and the audio data stored in the memory 33. Thereby, for example, music stored in advance in the memory 33, sound associated with a call, sound of television or radio broadcast is output from the speaker 34. Note that the speaker 34 may have the same configuration as the receiver 22 described above.

  Here, since the speaker 34 vibrates the housing of the mobile phone 1 when outputting various audio signals, the mobile phone 1 generates an acceleration corresponding to the audio signal.

The acceleration sensor 35 detects the acceleration (first acceleration) of the mobile phone 1 and outputs the detection result to the CPU 30. The acceleration sensor 35 is a three-axis (three-dimensional) type that detects acceleration in three directions orthogonal to each other in the X-axis direction, the Y-axis direction, and the Z-axis direction, and includes an externally applied force (F) and mass ( m), acceleration (a) is measured (acceleration (a) = force (F) / mass (m)). Here, when the acceleration values in the X-axis direction, the Y-axis direction, and the Z-axis direction are respectively (X, Y, Z), the combined acceleration value (G) is “G = √ (X ² + Y ² + Z ^2). ) ”.

  In addition, although the acceleration sensor 35 of this embodiment was a 3-axis type, it is not restricted to this. For example, the number of axes may be simply one or two, or a multi-axis sensor having four or more axes may be used for accurate detection.

  Further, the acceleration sensor 35 measures, for example, a force applied to a predetermined mass by a piezoelectric element to obtain an acceleration for each axis, converts it into numerical data, and buffers it. And CPU30 reads the acceleration data buffered periodically. The acceleration sensor 35 is not limited to a piezoelectric element (piezoelectric type), but may be a MEMS (Micro Electro Mechanical Systems) type such as a piezoresistive type, a capacitance type, a thermal detection type, or a feedback current by moving a movable coil. And a servo gauge type that measures strain caused by acceleration with a strain gauge, or the like.

  The open / close sensor 36 includes a magnet (not shown) arranged in the operation unit side body 2 and a hall element (not shown) arranged in the display unit side body 3. Detect state. Specifically, the open / close sensor 36 detects the strength of magnetism associated with the difference in the positional relationship between the operation unit side body 2 and the display unit side body 3, and based on the detected result, the cellular phone 1 It is determined whether the open state or the closed state.

  FIG. 3 is a block diagram illustrating functions of the CPU 30 according to the present embodiment. The CPU 30 includes a reproduction unit 41 and a calculation unit 42 (first calculation unit).

  The reproducing unit 41 acquires the audio data A stored in the memory 33 and generates an audio signal to be provided to the speaker 34 sequentially in time series. In addition, the playback unit 41 provides the calculation unit 42 with volume data when outputting sound from the speaker 34.

  The calculation unit 42 acquires the vibration pattern B stored in the memory 33 in association with the audio data A provided to the reproduction unit 41. This vibration pattern B is a predetermined physical quantity indicating the vibration of the mobile phone 1 that occurs when sound based on the sound data A is output from the speaker 34, specifically, detected by the acceleration sensor 35. Is the same acceleration data (second acceleration).

  The predetermined physical quantity is not limited to acceleration, and various data indicating the vibration of the mobile phone 1 such as speed, jerk, vibration frequency and amplitude (volume) can be employed. The calculation unit 42 converts these predetermined physical quantities into acceleration data, and uses the converted acceleration data as the vibration pattern B.

  Further, the calculation unit 42 acquires acceleration data C (first acceleration) detected by the acceleration sensor 35. In addition, the calculation unit 42 adjusts the increase / decrease of the vibration pattern B (second acceleration) acquired from the memory 33 based on the volume data acquired from the reproduction unit 41. That is, as the volume increases, the magnitude of the acceleration generated by the speaker 34 also increases. Therefore, the acceleration value indicated by the vibration pattern B is adjusted larger as the volume increases, and the acceleration value is adjusted smaller as the volume decreases.

  Next, the calculation unit 42 subtracts the vibration pattern B adjusted by the sound volume data from the acceleration data C to obtain corrected acceleration data. Here, the subtraction means adding acceleration data having a phase opposite to that of the vibration pattern B.

  The calculating unit 42 applies a predetermined step count measurement algorithm to the corrected acceleration data, and calculates and outputs the step number data. Various known algorithms can be applied to the step count measurement. Hereinafter, for the sake of simplicity, the description will be made assuming that the number of times the acceleration exceeds a predetermined threshold as a result of monitoring the corrected acceleration data in time series is measured as the number of steps.

  FIG. 4 is a flowchart showing processing of the CPU 30 in the mobile phone 1 according to the present embodiment.

  In step S <b> 1, the CPU 30 acquires acceleration data C indicating the acceleration of the mobile phone 1 from the acceleration sensor 35.

  In step S <b> 2, the CPU 30 determines whether sound is output from the speaker 34. If this determination is YES, it is determined that acceleration other than the walking motion is detected by the vibration of the speaker 34, and the process proceeds to step S3. On the other hand, if the determination is NO, it is determined that the detected acceleration is due to only walking motion, and the process proceeds to step S4.

  In step S <b> 3, the CPU 30 acquires the vibration pattern B corresponding to the audio data A determined to be output in step S <b> 2 from the memory 33. Then, after adjusting the acquired vibration pattern B with the volume data, the CPU 30 subtracts the adjusted vibration pattern B from the acceleration data C acquired in step S1 to newly add acceleration data C (corrected acceleration data). Get.

  In step S4, the CPU 30 performs step count counting based on the acceleration data C using a predetermined algorithm.

  FIG. 5 is a diagram showing acceleration data and corrected acceleration data when the speaker 34 vibrates while the mobile phone 1 according to the present embodiment is stationary.

  The CPU 30 acquires, from the acceleration sensor 35, acceleration data C obtained by combining accelerations generated by the vibration of the speaker 34. When the step count is performed using the acceleration data C, the user does not actually walk, but the acceleration exceeds the threshold for the step count and is counted as the step count.

  Therefore, the CPU 30 adds the acceleration data having the opposite phase of the acceleration generated by the vibration of the speaker 34, that is, the vibration pattern B to the acceleration data C. As a result, the acceleration generated by the vibration of the speaker 34 is canceled, and corrected acceleration data indicating a stationary state is obtained. When the step count is performed using the corrected acceleration data, since the acceleration does not exceed the step count threshold, the correct number of steps (0 steps) is measured.

  FIG. 6 is a diagram illustrating acceleration data when the speaker 34 vibrates while the user is walking in the mobile phone 1 according to the present embodiment.

  The CPU 30 obtains acceleration data C in which a change in acceleration with a short period generated by vibration of the speaker 34 is combined with a change in acceleration with a long period due to walking motion. When the step count is performed using the acceleration data C, the acceleration component generated by the vibration of the speaker 34 causes more acceleration fluctuations exceeding the step count threshold than the actual step count.

  FIG. 7 is a diagram showing separately the acceleration component generated by the walking motion and the acceleration component generated by the vibration of the speaker 34 in the acceleration data of FIG.

  The CPU 30 adds acceleration data having a phase opposite to that of the acceleration generated by the speaker 34, that is, the vibration pattern B, to the acceleration data C. As a result, acceleration data generated by the walking motion as shown in FIG. 7 is extracted as corrected acceleration data.

  Then, when the step count is performed using the corrected acceleration data, the CPU 30 can correctly detect the change in acceleration exceeding the threshold value due to the walking motion and measure the correct number of steps.

  As described above, according to the present embodiment, the vibration pattern B corresponding to the sound data A is stored in advance, so that the corrected acceleration data from which the vibration acceleration component caused by the sound output from the speaker 34 is removed is obtained. Can be acquired. As a result, the number of steps can be measured based on the acceleration caused by the walking motion regardless of whether or not the speaker 34 vibrates.

Second Embodiment
Hereinafter, a second embodiment which is an example of a preferred embodiment of the present invention will be described. In the present embodiment, the memory 33 does not store the vibration pattern B in advance, and predicts and calculates the vibration pattern B from the reproduced audio data. In addition, the same code | symbol is attached | subjected about the structure similar to 1st Embodiment, and description is abbreviate | omitted or simplified.

  FIG. 8 is a block diagram illustrating functions of the CPU 30 according to the present embodiment. The CPU 30 includes a reproduction unit 41, a calculation unit 42, and a prediction unit 43 (second calculation unit).

  The prediction unit 43 sequentially acquires, in time series, the audio signal before being output from the speaker 34 and the volume data when the audio signal is output from the speaker 34 after being played back by the playback unit 41. . Then, the prediction unit 43 calculates the acceleration due to the vibration of the speaker 34 predicted from the acquired audio signal and volume data in real time as the vibration pattern B.

  As in the first embodiment, the calculation unit 42 subtracts the vibration pattern B calculated by the prediction unit 43 from the acceleration data C acquired by the acceleration sensor 35 to obtain corrected acceleration data. The corrected acceleration data is used to calculate and output the step count data at the same time as the audio signal is output from the speaker 34 or without delay.

  FIG. 9 is a flowchart showing the processing of the CPU 30 in the mobile phone 1 according to the present embodiment.

  In step S <b> 11, the CPU 30 acquires acceleration data C indicating the acceleration of the mobile phone 1 from the acceleration sensor 35.

  In step S <b> 12, the CPU 30 determines whether sound is output from the speaker 34. If this determination is YES, it is determined that acceleration other than the walking motion is detected by the vibration of the speaker 34, and the process proceeds to step S13. On the other hand, if the determination is NO, it is determined that the detected acceleration is solely due to the walking motion, and the process proceeds to step S15.

  In step S <b> 13, the CPU 30 calculates a vibration pattern B as an acceleration component due to vibration of the speaker 34 from the audio data A determined to be output in step S <b> 12.

  In step S14, the CPU 30 adjusts the vibration pattern B calculated in step S13 based on the volume data, and then subtracts the adjusted vibration pattern B from the acceleration data C acquired in step S11 to newly add acceleration data C. (Corrected acceleration data) is obtained.

  In step S15, the CPU 30 performs step count counting based on the acceleration data C using a predetermined algorithm.

  As described above, according to the present embodiment, the vibration prediction B is calculated from the audio data A that is output, and the vibration pattern B is generated. As a result, not only audio data such as music stored in advance, but also the output of audio from the speaker 34, such as television or radio broadcast, which cannot be prepared in advance, is output. Corrected acceleration data from which the acceleration component has been removed can be acquired. As a result, the number of steps can be measured based on the acceleration caused by the walking motion, regardless of the type of audio data to be output.

  In addition, according to the present embodiment, since the audio data is reproduced and the vibration pattern B is calculated in real time and the step count is measured, the user can immediately obtain the correct step count data based on the corrected acceleration data when desired. Can be acquired.

<Third Embodiment>
The third embodiment, which is an example of a preferred embodiment of the present invention, will be described below. In the present embodiment, the vibration pattern B and acceleration data C are stored, and the number of steps is measured at a predetermined timing. In addition, the same code | symbol is attached | subjected about the structure similar to 1st Embodiment or 2nd Embodiment, and description is abbreviate | omitted or simplified.

  FIG. 10 is a block diagram illustrating functions of the CPU 30 according to the present embodiment. The CPU 30 includes a reproduction unit 41, a calculation unit 42, and a prediction unit 43, and further controls the memory 33 (storage unit).

  Unlike the second embodiment, the prediction unit 43 stores the calculated vibration pattern B in the memory 33. The memory 33 also stores acceleration data C detected by the acceleration sensor in synchronization with the vibration pattern B in time series.

  Then, the calculation unit 42 obtains corrected acceleration data based on the acceleration data C and the vibration pattern B read from the memory 33 at a predetermined timing, and then calculates and outputs step count data using the corrected acceleration data. To do.

  Here, the predetermined timing is a part or all of the instruction operation input for causing the display unit 21 to display the result of step count measurement. Specifically, for example, it may be a timing at which an operation input for starting an application for measuring the number of steps or an instruction input for displaying a result is received after the application is started.

  FIG. 11 is a flowchart showing a data acquisition process of the CPU 30 in the mobile phone 1 according to the present embodiment.

  In step S <b> 21, the CPU 30 acquires acceleration data C indicating the acceleration of the mobile phone 1 from the acceleration sensor 35.

  In step S <b> 22, the CPU 30 determines whether sound is output from the speaker 34. If this determination is YES, it is determined that acceleration other than the walking motion is detected by the vibration of the speaker 34, and the process proceeds to step S23. On the other hand, if the determination is NO, it is determined that the detected acceleration is due to only walking motion, and the process proceeds to step S24.

  In step S <b> 23, the CPU 30 calculates a vibration pattern B as an acceleration component due to vibration of the speaker 34 from the audio data A determined to be output in step S <b> 22 and stores it in the memory 33.

  In step S24, the CPU 30 stores the acceleration data C acquired in step S21 in the memory 33 in synchronization with the vibration pattern B stored in step S23 in time series.

  FIG. 12 is a flowchart showing the step count processing of the CPU 30 in the mobile phone 1 according to the present embodiment.

  In step S31, the CPU 30 reads the acceleration data C and the vibration pattern B stored in the data acquisition process (FIG. 11) from the memory 33.

  In step S32, the CPU 30 determines whether or not sound has been output from the speaker 34, that is, whether or not the vibration pattern B is associated with the acceleration data C. If this determination is YES, it is determined that acceleration other than the walking motion has been detected by the vibration of the speaker 34, and the process proceeds to step S33. On the other hand, if the determination is NO, it is determined that the detected acceleration is due to only walking motion, and the process proceeds to step S34.

  In step S33, the CPU 30 subtracts the vibration pattern B from the acceleration data C read in step S31 to obtain new acceleration data C (corrected acceleration data).

  In step S <b> 34, the CPU 30 performs step count counting using a predetermined algorithm based on the acceleration data C.

  As described above, according to the present embodiment, the acceleration data C and the vibration pattern B are temporarily stored in the buffer (memory 33), and the step count process is executed later. Thereby, there is a possibility that the processing load of the calculation unit 42 can be reduced and the number of steps can be measured more accurately.

  Further, according to the present embodiment, since a predetermined operation input is received at a timing desired by the user and the result of step count measurement is output, the convenience for the user is improved.

  In the present embodiment, the step count measurement is performed when an instruction operation input for displaying the result of the step count measurement on the display unit 21 is received, but is not limited thereto. For example, it may be a timing when the operation unit side body 2 and the display unit side body 3 of the mobile phone 1 are opened to each other and deformed from the closed state to the open state. In this case, the CPU 30 performs step count measurement in response to receiving a signal indicating that the open / close sensor 36 has been transformed into the open state.

  Thereby, the user can display the result of step count measurement by the deformation | transformation operation | movement (operation | movement which displays the display part 21) to the open state which suggests the intention of display irrespective of explicit operation input. Therefore, convenience for the user is improved.

  The acceleration data C and the vibration pattern B stored in the memory 33 may be stored in association with the time. In this case, the CPU 30 accepts an input for designating the time (start time and end time) for measuring the number of steps, and uses the acceleration data C and the vibration pattern B corresponding to the time, thereby obtaining the number of steps desired by the user. Can be measured and presented.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

1 Mobile phone (mobile electronic device)
2 Operation unit side housing (first housing)
3 Display unit side housing (second housing)
11 operation unit 21 display unit 30 CPU (first calculation unit, second calculation unit)
33 Memory (storage unit)
34 Speaker (Audio output unit)
35 Acceleration sensor (acceleration detector)
36 Open / close sensor 41 Playback unit 42 Calculation unit (first calculation unit)
43 Prediction unit (second calculation unit)
A Voice data B Vibration pattern (second acceleration)
C Acceleration data (first acceleration)

Claims (4)

An acceleration detector for detecting acceleration;
An audio output unit that outputs audio based on audio data;
A first calculation unit that calculates a corrected acceleration obtained by correcting the first acceleration detected by the acceleration detection unit, based on an output state of the sound output by the audio output unit;
A second calculation unit for calculating a predetermined physical quantity based on the output state of the sound;
A storage unit;
A display unit;
An operation unit that accepts external input;
Equipped with a,
The storage unit stores the first acceleration and the predetermined physical quantity in time series when the audio output unit is outputting audio,
The first calculation unit receives the instruction operation for causing the display unit to display a calculation result by the first calculation unit on the display unit, and then the first acceleration stored in the storage unit. based on the predetermined physical quantity and a portable electronic device characterized that you calculate the correction acceleration. The portable electronic device according to claim 1 ,
The predetermined physical quantity is a second acceleration generated based on the output state of the sound.
A portable electronic device characterized by that. The portable electronic device according to claim 1 ,
The predetermined physical quantity is a volume generated based on an output state of the sound.
A portable electronic device characterized by that. The portable electronic device according to claim 2 ,
The first calculation unit calculates the corrected acceleration by adding an acceleration having a phase opposite to that of the second acceleration to the first acceleration.
A portable electronic device characterized by that.

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