A wrapper for Unity's Microphone class. Proving easy APIs for mic input and management.

Scripting API page and more documentation coming soon.

Mic.Init() to initialize UniMic

Mic.AvailableDevices to get a list of available Mic.Device objects

The following API is available in Mic.Device:

• DEFAULT_FRAME_DURATION_MS the default length of the frame in milliseconds.
• OnStartRecording event fired when the device starts recording
• OnFrameCollected event fired when the device has gathered PCM data for one frame of user defined duration. Parameters:
  • int, float[] the channel count and PCM float array of the frame
• OnStopRecording event fired when the device stops recording
• Name gets the name of the device
• MaxFrequency is the highest sampling frequency supported by the device
• MinFrequency is the lowest sampling frequency supported by the device
• VolumeMultiplier increases/decreases volume by multiplying PCM samples
• SupportsAnyFrequency is true if the recording device supports any sampling frequeny
• SamplingFrequency is the user defined frequency at which is device will record
• FrameDurationMS is the audio duration of a single PCM frame that this device will report in the OnFrameCollected event
• FrameLength is the length of the float PCM array this device will report in the OnFrameCollected event
• StartRecoring() starts the device recording at the highest supported sampling frequency and the default frame duration defined by DEFAULT_FRAME_DURATION_MS
• StartRecording(int frameDurationMS) starts the device recording at the highest supported sampling frequency and the user defined frame duration
• StartRecording(int samplingFrequency, int frameDurationMS) starts the device recording at the user defined sampling frequency and frame duration
• StopRecording() stops the device recording
• IsRecording returns if the device is currently recording audio

MicAudioSource component is available for playing back microphone feed. This class is also a good reference for writing your own code for incoming audio data. This class includes:

• autoStart configurable in the editor. Whether the component should automatically start playing back audio from the first device detected
• Device is a reference to the device this object it currently playing
• bufferDurationMS is the length in milliseconds of the internal audio buffer that the object uses. The value defined here is also the time it would take for playback to start and the latency between audio capture and playback
• SetDeviceByName(string deviceName, bool autoStart = false) changes the device this instance is playing. If autoStart is true, it automatically starts playing the audio being captured by the new device.
• SetDevice(Mic.Device device, bool autoStart = false) similar to SetDeviceByName except it takes a Mic.Device object as the first parameter. This is recommended over SetDeviceByName
• StartRecording starts/resumes the recording. A device MUST be registered using SetDevice or SetDeviceByName method before calling this.
• StopRecording stops the recording.

View Basic MicAudioSource Sample for single mic sample
View Multiple Mic UI Sample for a more complicated sample that shows all the available mics on a UI and allows you to mute/unmute them.

Some Xiaomi phones may prevent side loaded APKs from functioning.
There is no AEC (Acoustic Echo Cancelletion). If you're trying the samples be sure to use headphones to avoid creating a feedback loop.

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