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Apple's Voice Processing Audio Unit ( …
https://stackoverflow.com/questions/12821404/apples-voice-processing-audio-unit-kaudiounitsubtype-voiceprocessingio-brok
I tried to use the built-in echo-suppression by switching to using a kAudioUnitSubType_VoiceProcessingIO unit. This works really well on iOS 6 (iPad 3), but the same code on iOS 5.1 (iPad 2) produces white noise on the microphone input. The documentation just mentions that it should be available in iOS 3.0 and later.
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.
In iOS 9, AVAudioPlayer will play … | Apple Developer …
https://developer.apple.com/forums/thread/22133
Instantiation of the kAudioUnitSubType_VoiceProcessingIO unit attenuates audio playback on the output scope of bus 0. It's been like this for a very long time. I have correspondence with the audio team discussing this behavior dating back to iOS 6. File a bug sure, but you should realize what's going on and design your app accordingly.
iOSでのアクティブノイズキャンセル
https://stackfinder.jp.net/questions/21659336/active-noise-cancellation-in-ios
使っているようですkAudioUnitSubType_RemoteIO。使ってみましたkAudioUnitSubType_VoiceProcessingIOか？それが役立つかもしれません。 This audio unit does signal processing on the incoming audio (taking out any of the audio that is played from the device at a given time from the incoming audio).
About Audio API - MMDAgent-EX
https://mmdagent-ex.dev/ja/docs/notes/audioio/
This page describes audio API and its setting parameters on MMDAgent-EX. Android. When running on Android 8.0 and later, MMDAgent-EX uses the new Android C API called AAudio for audio recording and playing. On older devices where AAudio is not available, OpenSL ES for Android is used instead. We are using Google Oboe library to support both APIs.. The setup …
Using Audio - Apple Developer
https://developer.apple.com/library/archive/documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html
The Voice Processing I/O unit, of type kAudioUnitSubType_VoiceProcessingIO, has the characteristics of the I/O unit and adds echo suppression and other features for two-way communication. Generic Output unit
iPad Pro dynamic speaker configura… | Apple Developer Forums
https://developer.apple.com/forums/thread/44850
I am having difficult time with new 2017 iPad Pro. Our customer purchased new 2017 ones and it's causing echo. I carefully looked again to make sure that both kAudioUnitSubType_VoiceProcessingIO and AVAudioSessionModeVoiceChat are being used yet still there is clearly echo produced.I even made very simple test app that has nothing but to …
audio学习相关_weixin_34289744的博客-程序员秘密
https://cxymm.net/article/weixin_34289744/91586404
The Voice Processing I/O unit, of type kAudioUnitSubType_- VoiceProcessingIO, has the characteristics of the I/O unit and adds echo suppression and other features for two-way communication. Generic Output unit
DetectingAudioFrequency/mo_audio.mm at master · krafter ...
https://github.com/krafter/DetectingAudioFrequency/blob/master/DetectingSoundFrequency/mo_audio.mm
into the canonical version. The Software is provided "as is", WITHOUT ANY WARRANTY, express or implied, including but not limited to the warranties of MERCHANTABILITY, FITNESS. FOR A PARTICULAR PURPOSE and NONINFRINGEMENT. In no event shall the authors. or copyright holders by liable for any claim, damages, or other liability,
Webrtc AGC 算法（二） - 简书
https://www.jianshu.com/p/03425e8d3b80
2. webrtc中的AGC. iOS平台的VPIO自己本身已经支持AEC、AGC和NS所以不使用WebRTC的软件算法。. WebRTC iOS 并未实现开关 AEC 的逻辑，但是提供了一个 ios_force_software_aec_HACK 选项，用以在硬件 AEC 不生效的机器上强制开启软件 AEC 实现，但这种做法的具体表现如何，WebRTC 也是 ...
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