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371 questions
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4 votes
0 answers
163 views

The following ~100 lines of code for capturing audio input signals from whichever default device, that used to work ever since OSX, seem broken as of macOS 11 API, approximately. It compiles and links ...
user3078414's user avatar
  • 1,977
2 votes
0 answers
34 views

I’m using AudioKit 5.6.5 with SwiftUI. When I create and start an AudioEngine, Instruments’ “Leaks” tool flags leaks attributed to AudioToolbox. When I stop the engine or remove my view, the leaks ...
JohnOfIreland's user avatar
  • 301
1 vote
1 answer
56 views

I try to export wav 32bit file, but AVAssetWriter can not add input let setting = [ AVFormatIDKey : kAudioFormatLinearPCM, AVSampleRateKey : 44100, ...
luckysmg's user avatar
  • 389
2 votes
0 answers
103 views

I am encountering the following warning (from Audio Toolbox?) very often when opening an external microphone audio stream with ffmpeg's libavformat on macOS: CMIO_Unit_Converter_Audio.cpp:590:...
Xavi's user avatar
  • 71
1 vote
1 answer
114 views

I currently use AVAudioRecorder to record audio in an app. If the app crashes or something happens while recording, the file being recorded is lost so as an alternative, I'm trying to use Audio Queue ...
Ryan H's user avatar
  • 143
6 votes
2 answers
1k views

Edit: Updated code based on suggestions, fixing the ASBD and making another attempt at getting PTS right. It still doesn't play any audio, but there are no errors anymore at least. I'm working on an ...
Jason Ericson's user avatar
  • 103
1 vote
0 answers
164 views

I want to build a DAW for macos and I am wondering what would be the best approach. Using AudioToolbox and core audio functionalities or AVAudioEngine? I am bit confused because I've seen that AUgraph ...
jumeca's user avatar
  • 21
1 vote
0 answers
303 views

I'm trying to decode aac to pcm data, my goal is to decode the acc data received by tcp into pcm data. Currently I want to convert local aac files to pcm data first, and I encounter a problem: [...
Nullable's user avatar
  • 1,014
0 votes
0 answers
167 views

I am creating a notification service extension and I have a special use case so I have to play sound using AudioToolbox instead of regular notification sound. It works pretty well, but I don't know ...
Ajvar1's user avatar
  • 157
1 vote
0 answers
74 views

I'm trying to use the 'ReceivedMessage' sound on macOS using AudioServicesPlaySystemSound() but I can't seem to find the ID anywhere. What I've tried: I've looked under /System/Library/Components/...
cyril's user avatar
  • 3,023
0 votes
0 answers
88 views

I am using the MusicSequenceFileCreate method to generate a MIDI file from a beat-based MusicSequence. In iOS 16.0.2 devices, the file that is created has a Sysex MIDI message added (not by me) to the ...
caminante errante's user avatar
  • 315
1 vote
0 answers
74 views

When I use AUGraph to implemention record and play, I want to get audio data through RenderCallback.There is a problem in remote io unit callback with error kAudioConverterErr_InvalidInputSize(...
joy-711's user avatar
  • 11
1 vote
0 answers
2k views

I'm encoding audio files from AIFC to ALAC using ffmpeg, I noticed that ffmpeg provides two different encoders for this purpose, named alac and alac_at: $ ffmpeg -encoders ... A..... alac ...
Julien Dargelos's user avatar
  • 395
2 votes
1 answer
226 views

I have an audio format with 4 channels that I want to convert into 2 channels format. kAudioConverterChannelMap can only discard the extra inputs: When In > Out, the first Out inputs are routed to ...
Leo's user avatar
  • 3,133
0 votes
0 answers
318 views

I've problem with an AU host (based on Audio Toolbox/Core Audio, not AVFoundation) when running on macOS 11 or later and Apple Silicon – it crashes after some operations in GUI. The weird is, it ...
tomas.kolar's user avatar
  • 11

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