CN110517695A - Verification method and device based on vocal print - Google Patents
Verification method and device based on vocal print Download PDFInfo
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- CN110517695A CN110517695A CN201910860737.3A CN201910860737A CN110517695A CN 110517695 A CN110517695 A CN 110517695A CN 201910860737 A CN201910860737 A CN 201910860737A CN 110517695 A CN110517695 A CN 110517695A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000012795 verification Methods 0.000 title claims abstract description 29
- 230000001755 vocal effect Effects 0.000 title claims abstract description 21
- 238000000605 extraction Methods 0.000 claims abstract description 5
- 239000000284 extract Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000001727 in vivo Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010200 validation analysis Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/04—Segmentation; Word boundary detection
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L17/00—Speaker identification or verification techniques
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L17/00—Speaker identification or verification techniques
- G10L17/02—Preprocessing operations, e.g. segment selection; Pattern representation or modelling, e.g. based on linear discriminant analysis [LDA] or principal components; Feature selection or extraction
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L17/00—Speaker identification or verification techniques
- G10L17/04—Training, enrolment or model building
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- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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- Computer Vision & Pattern Recognition (AREA)
- Computational Linguistics (AREA)
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Abstract
The invention discloses a kind of verification method and device based on vocal print.Wherein based on the verification method of vocal print, store comprising steps of acquiring the voice messaging of at least one user and extracting the phonetic feature of each user into model library；The random verifying password that generates is read aloud for user to be verified, and is obtained and read aloud voice；Content and phonetic feature to be verified in voice are read aloud described in extraction, the content and phonetic feature to be verified are verified according to the model library and verifying password, and be verified result.The present invention is the method for recognizing sound-groove based on local processed offline, each identification content changes at random, and carries out In vivo detection, the significant increase safety of user's checking to verifying voice signal.
Description
Technical field
The present invention relates to identity validation technologies, such as financial payment, gate inhibition, electronic lock device etc., more particularly to are based on sound
The identity validation technology of line, and it is loaded with the computer equipment and storage equipment of the identity validation technology.
Background technique
Application on Voiceprint Recognition has had been applied in many fields at present, such as when voice control, specified by allowing user to say
Instruction, to execute corresponding movement for the specified instruction, i.e., the voice control is relevant based on content.Also have
Speech recognition is by recording audio in advance, and identical user says the audio of identical content later, then is identified by, still
This audio recorded in advance is easier to be cracked, and verification technique of some based on cloud, and needing first will be on voice
Network is reached, may be subjected to the attack of hacker during this, therefore there are security risks for this voice recognition mode.
Summary of the invention
In order to solve the technical problem that voice print verification degree of safety is lower in the prior art, the invention proposes based on vocal print
Verification method and device.
Verification method proposed by the present invention based on vocal print, comprising steps of
Step 1, it acquires the voice messaging of at least one user and extracts the phonetic feature of each user and store into model library；
Step 2, the random verifying password that generates is read aloud for user to be verified, and is obtained and read aloud voice；
Step 3, content and phonetic feature to be verified in voice are read aloud described in extraction, according to the model library and verifying password
The content and phonetic feature to be verified are verified, and are verified result.
Specifically, the phonetic feature for extracting each user is stored and is specifically included into model library:
N sections of sound bites, each sound bite is respectively cut into identical at least two voice messagings of single user's content
Content be a character；
The phonetic feature for extracting each sound bite, by the phonetic feature of the identical sound bite of content in all voice messagings
It compares, extracts the phonetic feature of user's corresponding content；
The sonification model that the phonetic feature of all different contents of each user is combined into the user is stored to model library
In.
Preferably, it when the sound bite cuts failure, reminds user and resurveys the voice messaging of user.
Preferably, the verifying password is made of at least one character.
Preferably, the voice messaging that the user is less than or equal to for storing the character quantity of the dictionary of the character corresponds to
Content character quantity.
In one embodiment, the step 3 specifically includes: the voice of reading aloud is cut into m sections of voice sheets to be verified
Section, the content of each sound bite to be verified are a character, m≤n；The voice for extracting each sound bite to be verified is special
Sign；By the sound bite that user is corresponded in the model library according to it is described verifying password content be combined, and with combination after
The sequence sound bite to be verified of reading aloud voice with described correspondingly carry out phonetic feature matching；If being matched to corresponding
User, then successful match, otherwise it fails to match.
In another embodiment, the step 3 specifically includes: whether the content that voice is read aloud described in verifying is tested with described
The content for demonstrate,proving password is identical；If they are the same, then the voice of reading aloud is cut into m sections of sound bites to be verified, each is to be verified
The content of sound bite is a character, m≤n；Extract the phonetic feature of each sound bite to be verified；Language is read aloud by described
The sound bite to be verified of sound carries out phonetic feature matching with the speech model of the corresponding user in the model library；If being matched to
Corresponding user, then successful match, otherwise it fails to match.
Preferably, when the sound bite to be verified cutting failure, remind user to be verified and resurvey it is described to
The described of verifying user reads aloud voice.
Preferably, it when the user to be verified is matched to corresponding user, according to the permission that the user is possessed, assigns
Give the corresponding permission of the user to be verified.
Preferably, the model library and dictionary are local database.
The invention also provides the devices for having used the verification method described in above-mentioned technical proposal based on vocal print, comprising:
Sound acquisition module for acquiring the voice messaging He reading aloud voice, for extracting the voice messaging and reading aloud voice
It is raw to extract the character for storing the memory module of the model library and character at random for the characteristic extracting module of phonetic feature
At it is described verifying password secret generation module, to it is described read aloud voice and verify password carry out matching verifying authentication module.
Computer equipment proposed by the present invention, including memory, processor and storage are on a memory and can be in processor
The computer program of upper operation, the processor are realized described in above-mentioned technical proposal when executing the computer program based on sound
The verification method of line.
Storage equipment proposed by the present invention comprising computer executable instructions, described includes computer executable instructions
Storage equipment realized when executing the computer executable instructions as computer processor described in above-mentioned technical proposal based on
The verification method of vocal print.
The present invention collects the voice signal of user by sound acquisition modules such as microphones, and only in processing locality, no
It can reveal user's personal information, and and Network Isolation, the safety of system has been significantly greatly increased.The present invention is believed by the vocal print of user
Breath, identifies the exclusive biological characteristic of user, can greatly guarantee the exclusive permission of user, have very in the occasion of authentication
Big application value.The present invention is based on the methods of limited dictionary, improve technical feasibility and user experience, enhance practical
Property, it can guarantee the safety of verifying under finite computational abilities, and prevent information leakage with randomness content, ensure safety
Under the premise of keep authentication safer.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is overall flow figure of the present invention.
Fig. 2 is register flow path figure of the invention.
Fig. 3 is verifying flow chart of the invention.
Specific embodiment
The principle and embodiment that the invention will now be described in detail with reference to the accompanying drawings.
It as shown in Figure 1 to Figure 3, include two parts of registration and verifying the present invention is based on the verification method of vocal print.
In registration, the present invention acquires the voice messaging of user and extracts the phonetic feature of user and stores into model library,
Specific single user needs user to carry out model training to saving your breath twice as requested, extracts the use when registering
The biological characteristic at family establishes the sonification model of user and is stored in local model library.The present invention can specifically pass through following step
Suddenly model buildings are carried out to one or more users.
(a) verifying device is waken up, then starts to register；
(b) it records, records at least twice to active user, obtain at least two voice messagings as input signal；Such as
It is required that user reads aloud twice of number of 0-9, two corresponding voice messagings are then generated.
(c) pretreatment such as noise reduction, cutting is carried out to the voice messaging of recording, voice messaging is cut into sound bite, often
The content of one sound bite is a character, and character mentioned here includes at least one in number, letter, word and symbol
Kind.In the present embodiment, every voice messaging is divided into the sound bite of 10 independent numbers.When sound bite cuts failure,
User is reminded to record again then so as to resurvey the voice messaging of user, such as the number of segment of cutting is undesirable, then
It needs again to record to user；
(d) feature extraction then is carried out to every voice messaging, the phonetic feature of each sound bite is extracted, by all voices
The phonetic feature of the identical sound bite of content compares in information, extracts the phonetic feature of user's corresponding content, this reality
It applies in example, the phonetic feature of the identical sound bite of two numbers is compared to extract the voice of user's corresponding content spy
Sign, for example, two sections of sound bites of 0 this pronunciation are compared to extract phonetic feature when user issues 0.
(e) phonetic feature of all different contents of each user is combined into the sonification model of this user, and deposited
It stores up in local model library.
In above-mentioned registration process, it is not limited to the numeric utterance of typing user, the word of user can also be employed
Pronunciation, the pronunciation of word, the pronunciation of symbol etc., the character provided be also not limited to only be provided once, for example, passing through big data
Analysis, some pronunciations are compared when being difficult to compare feature, reading can also be required in a voice messaging several times, to be conducive to
Extract the phonetic feature that user is directed to the pronunciation.When relatively, the present invention is the sound bite of identical content to be carried out pair
Than, therefore, the sound bite of even two voice messagings, it is also possible to occur being more than the identical voice sheet of 2 or more contents
Section, this is also allowed.Certainly in general, a content compares twice can.Below with the 4 of family of four
It carries out the explanation of registration one of example, needs each user to say two section 0 to 9 of digital speech under prompt, to every section of voice
It is pre-processed, including noise reduction and voice are cut, then carry out MFCC feature extraction, save as two groups of phonetic features of active user
Data, then phase knowledge and magnanimity calculating is carried out with two groups of voice feature datas, find out the sounding mould that suitable threshold value is saved in active user
Type is used as verify data, is stored in model library.
User completes registration process, so that it may the verification process after carrying out, to realize desired control.The present invention
Verification method there is randomness, be not to extract preprepared data out from limited dictionary to be matched.
The present invention is that at least one character is randomly selected from dictionary, forms verifying password into row stochastic permutation and combination, then right again
The content and vocal print of the voice of user to be verified carry out matching verifying, belong to the relevant verification method of half text of one kind.It takes out every time
The quantity of the character taken can be fixed, and be also possible to unfixed, and those skilled in that art set i.e. as needed
It can.
Verification process of the invention is also required to voice signal input, after user says one section of voice according to prompt, according to mentioning
Whether the sonification model of the user of preceding foundation, matches voice signal and is calculated, obtain user to be verified in user model
In library, specifically who user, specific verification process are as follows.
(a) firstly, waking up verifying device；
(b) device enters challenge-response mode, generates verifying password at random from dictionary and reads aloud for user to be verified, and to
Voice is read aloud in the acquisition that record of reading aloud at family；Verifying password is made of at least one character, preferably, is verified close
The character quantity of code is more, and sounding information obtained by device is more, and judgement in this way is also just more accurate, certainly, verifies close
The character quantity of code is excessive, and will cause the burden of device, and therefore, general 6-8 character is best.Dictionary is exactly for storing
The character of verifying password is generated, since the permutation and combination and character quantity of verifying password can be random, the present invention
Dictionary in character quantity number it is limited, such as be only number occasion under, dictionary only needs to store 10 numbers just
It can be with the character quantity for storing the dictionary of character under normal conditions is corresponding less than or equal to voice messaging of the user in registration
The character quantity of content, so that the content for verifying password is as diversified as possible, but the calculating of device with match burden but
It is relatively minimal.
(c) to the pretreatments such as voice progress noise reduction, cutting are read aloud, it will specifically read aloud voice and be cut into m sections of voices to be verified
Segment, the content of each sound bite to be verified are a character, it is assumed that the number of segment that voice messaging is cut when registering is n
Section, then m≤n, n >=1.For example, verifying password content be 8 characters when, read aloud here voice will be cut into 8 sections it is to be tested
Demonstrate,prove sound bite；When sound bite to be verified cuts failure, user to be verified is reminded, and resurvey the bright of user to be verified
Read voice.
(e) it extracts and reads aloud content and phonetic feature to be verified in voice, according to the model library and verifying established before
Password verifies content and phonetic feature to be verified, and is verified result.Particularly calculate user to be verified with
The matching degree of data in model library, if being then verified in threshold range；If not in range, then current
The verifying of user to be verified does not pass through.
Here two embodiments are specifically related to.
In one embodiment, the present apparatus extracts the phonetic feature of each sound bite to be verified；Then by model
The sound bite of user is corresponded in library to be combined according to the content of verifying password, and with the sequence after combining correspondingly with
The sound bite to be verified for reading aloud voice carries out phonetic feature matching.When fewer in number, for above-mentioned one four mouthfuls, from
It picks out corresponding phonetic feature according to the content of verifying password in the sonification model of four people to be combined, then by everyone
The phonetic feature of each content be compared with the phonetic feature of corresponding segment to be verified, matching look at specifically which
User, if being matched to corresponding user, successful match, otherwise it fails to match., can be with if if number is numerous in model library
By some pre-processings, sequencing of similarity is carried out, picks out corresponding data in the sonification model high from similarity-rough set
It is matched, sees whether to be who specific user in model library.
In the second embodiment, we can also first verify user the content for reading aloud voice whether with verifying password
Content is identical；If identical go progress Characteristic Contrast then to prompt user to be read aloud again to acquire and read aloud voice if different again,
If repeatedly all different, reach preset errors number, then can carry out alarm or other processing.
When specific comparison, it is only necessary to comparison read aloud voice sound bite to be verified it is corresponding be that who is used in model library
Family does not need to go the phonetic feature in built-up pattern library in order again.The sound bite and mould to be verified of voice will be read aloud
The speech model of correspondence user in type library carries out phonetic feature matching (detailed to be identical with the first embodiment), if being matched to pair
The user answered, then successful match, otherwise it fails to match.
When user to be verified is matched to corresponding user, according to the permission that this user is possessed, device can be assigned
The corresponding permission of the user to be verified.
In order to realize that the above method, the device that the present invention is previously mentioned may include with lower module: when being registered for acquiring
The sound acquisition module (such as microphone) for reading aloud voice when voice messaging and verifying, for extracting voice messaging and reading aloud
The characteristic extracting module of the phonetic feature of voice, for the memory module in storage model library and character, the random character that extracts is generated
Verify password secret generation module, to read aloud voice and verify password carry out matching verifying authentication module.Wherein memory
It is the hardware of device itself, therefore, model library and dictionary are local database, do not need to carry out networking operation.Pass through this
The method for recognizing sound-groove of ground processed offline, the content identified every time change at random, the significant increase safety of user's checking.
In addition to specific device, method of the invention is realized based on computer program, and the present invention also protects computer equipment
With storage equipment, computer equipment include memory, processor and storage on a memory and the meter that can run on a processor
Verification method of the invention may be implemented when executing computer program in calculation machine program, processor.It is equally executable comprising computer
The storage equipment of instruction realizes verification method of the invention when executing computer executable instructions by computer processor.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of verification method based on vocal print, which is characterized in that comprising steps of
Step 1, it acquires the voice messaging of at least one user and extracts the phonetic feature of each user and store into model library；
Step 2, the random verifying password that generates is read aloud for user to be verified, and is obtained and read aloud voice；
Step 3, content and phonetic feature to be verified in voice are read aloud described in extraction, according to the model library and verifying password
The content and phonetic feature to be verified are verified, and are verified result.
2. as described in claim 1 based on the verification method of vocal print, which is characterized in that the phonetic feature for extracting each user
It stores and is specifically included into model library:
N sections of sound bites, each sound bite is respectively cut into identical at least two voice messagings of single user's content
Content be a character；
The phonetic feature for extracting each sound bite, by the phonetic feature of the identical sound bite of content in all voice messagings
It compares, extracts the phonetic feature of user's corresponding content；
The sonification model that the phonetic feature of all different contents of each user is combined into the user is stored to model library
In.
3. as claimed in claim 2 based on the verification method of vocal print, which is characterized in that fail when the sound bite is cut
When, it reminds user and resurveys the voice messaging of user.
4. as described in claim 1 based on the verification method of vocal print, which is characterized in that the verifying password is by least one word
Symbol composition；Character quantity for storing the dictionary of the character is less than or equal to the corresponding content of voice messaging of the user
Character quantity.
5. as claimed in claim 2 based on the verification method of vocal print, which is characterized in that the step 3 specifically includes:
The voice of reading aloud is cut into m sections of sound bites to be verified, the content of each sound bite to be verified is a word
Symbol, m≤n；
Extract the phonetic feature of each sound bite to be verified；
By the sound bite that user is corresponded in the model library according to it is described verifying password content be combined, and with combination after
The sequence sound bite to be verified of reading aloud voice with described correspondingly carry out phonetic feature matching；
If being matched to corresponding user, successful match, otherwise it fails to match.
6. as claimed in claim 2 based on the verification method of vocal print, which is characterized in that the step 3 specifically includes:
Whether the content that voice is read aloud described in verifying is identical as the verifying content of password；
If they are the same, then the voice of reading aloud is cut into m sections of sound bites to be verified, the content of each sound bite to be verified
For a character, m≤n；
Extract the phonetic feature of each sound bite to be verified；
The sound bite to be verified for reading aloud voice is subjected to voice with the speech model of the corresponding user in the model library
Characteristic matching；
If being matched to corresponding user, successful match, otherwise it fails to match.
7. such as the verification method described in claim 5 or 6 based on vocal print, which is characterized in that when the sound bite to be verified
When cutting failure, reminds user to be verified and resurvey the described of the user to be verified and read aloud voice.
8. as described in claim 1 based on the verification method of vocal print, which is characterized in that when the user to be verified is matched to pair
When the user answered, according to the permission that the user is possessed, the corresponding permission of the user to be verified is assigned.
9. as claimed in claim 3 based on the verification method of vocal print, which is characterized in that the model library and dictionary are local
Database.
10. a kind of device for having used the verification method as claimed in any one of claims 1 to 9 based on vocal print, comprising: use
Language in the sound acquisition module for acquiring the voice messaging with reading aloud voice, for extracting the voice messaging He reading aloud voice
The characteristic extracting module of sound feature is extracted the character at random and is generated for storing the memory module of the model library and character
It is described verifying password secret generation module, to it is described read aloud voice and verify password carry out matching verifying authentication module.
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Cited By (1)
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| CN111081255A (en) * | 2019-12-31 | 2020-04-28 | 苏州思必驰信息科技有限公司 | Speaker confirmation method and device |
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Application publication date: 20191129 |