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Resample input of kAudioUnitSubType_VoiceProcessingIO
https://developer.apple.com/forums/thread/675316
I would like to resample input hardware samples to the sample rate required by my app's codec settings while using kAudioUnitSubType_VoiceProcessingIO. I have some questions if is it possible to do this without instantiating the separate converter unit since according to the docs IO unit has its own converters.
macos - How to use …
https://stackoverflow.com/questions/10792469/how-to-use-kaudiounitsubtype-voiceprocessingio-subtype-of-core-audio-api-in-ma
Sample Rate: 44100 Format ID: lpcm Format Flags: 3116 Bytes per Packet: 4 Frames per Packet: 1 Bytes per Frame: 4 Channels per Frame: 1 Bits per Channel: 32
Apple's Voice Processing Audio Unit ( …
https://stackoverflow.com/questions/12821404/apples-voice-processing-audio-unit-kaudiounitsubtype-voiceprocessingio-brok
Sample rate of 48000; 1 channel; kAudioFormatFlagsCanonical; int16_t samples; Linear PCM; I'm still keen on documentation for this IO if anyone has any, and of course if this helped you don't forget to upvote :)
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/kaudiounitsubtype_voiceprocessingio
var kAudioUnitSubType_VoiceProcessingIO: UInt32 { get} Discussion. Bus 0 provides output to hardware and bus 1 accepts input from hardware. See the Voice-Processing I/O Audio Unit Properties for the identifiers for this audio unit’s properties.
GitHub - pinkydodo/AudioUnitMac: Demo for use …
https://github.com/pinkydodo/AudioUnitMac
Demo for use AudioUnit of type kAudioUnitSubType_VoiceProcessingIO on Mac. kAudioUnitSubType_VoiceProcessingIO is Supported on Mac, but it'is a little different。 kAudioOutputUnitProperty_EnableIO can't be set。 On Mac, input and output is both open，and can't be modified。 The Sample Rate for input and output must be same.
video-quickstart-ios/ExampleAVAudioEngineDevice.m at ...
https://github.com/twilio/video-quickstart-ios/blob/master/AudioDeviceExample/AudioDevices/ExampleAVAudioEngineDevice.m
// The VoiceProcessingIO audio unit uses bus 0 for ouptut, and bus 1 for input. ... audioUnitDescription. componentSubType = kAudioUnitSubType_VoiceProcessingIO; ... // Check if the sample rate, or channels changed and trigger a format change if it did.
iOS: How to resample audio(PCM data) using Audio Unit at ...
https://www.py4u.net/discuss/75267
kOutputBus 0 kInputBus 1 AUDIO_SAMPLE_RATE 44100 AUDIO_FRAMES_PER_PACKET 1 AUDIO_CHANNELS_PER_FRAME 1 AUDIO_BITS_PER_CHANNEL 16 AUDIO_BYTES_PER_PACKET 2 AUDIO_BYTES_PER_FRAME 2 I am receiving the PCM data from recording callback as . audioBufferList->mBuffers [0].mData. SO, how can i resample this PCM data from 44.1KHz to …
507 Delivering an Exceptional Audio Experience final
https://devstreaming-cdn.apple.com/videos/wwdc/2016/507n0zrhzxdzmg20zcl/507/507_delivering_an_exceptional_audio_experience.pdf?dl=1
Sample Rate Your App. Interact with other audio apps AVAudioSession AVAudioSession Another App AVAudioSession Some App Inputs Outputs Device Operating System Drivers Activate AVAudioSession Category ... kAudioUnitSubType_VoiceProcessingIO NEW let audioSession = AVAudioSession.sharedInstance()
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