Top "Core-audio" questions

Open Source sound engine

When I started using SoundEngine (from CrashLanding and TouchFighter), I had read about a few people recommending not to use …

c++ iphone core-audio openal

Encoding PCM (CMSampleBufferRef) to AAC on iOS - How to set frequency and bitrate?

I want to encode PCM (CMSampleBufferRef(s) going live from AVCaptureAudioDataOutputSampleBufferDelegate) into AAC. When the first CMSampleBufferRef arrives, I set …

ios audio core-audio aac audiotoolbox

iPhone SDK: AVAudioRecorder metering -- how to change peakPowerForChannel from decibel into percentage?

The AVAudioRecorder in the iPhone SDK can be used to get the peak and average power for a channel, in …

iphone core-audio avaudiorecorder decibel

Getting notified when a sound is done playing in OpenAL

I'm using OpenAL on iPhone to play multiple audio samples simultaneously. Can I get OpenAL to notify me when a …

iphone audio core-audio openal

Frequency Modulation Synthesis Algorithm

Based on what I read, I've made an algorithm for FM sound synthesis. I'm not sure if I did it …

c audio signal-processing core-audio synthesis

How can I obtain the native (hardware-supported) audio sampling rates in order to avoid internal sample rate conversion?

Can anybody point me to documentation stating the native sampling rates on the different iPhone versions in order to avoid …

ios core-audio audio-recording

How can I specify the format of AVAudioEngine Mic-Input?

I'd like to record the some audio using AVAudioEngine and the users Microphone. I already have a working sample, but …

ios avfoundation core-audio avaudioengine

Can anybody help me in recording iPhone output sound through Audio Unit

this is my code : i use this code to record the iPhone output audio by using Audio Unit then saving …

iphone ios5 core-audio audiounit

Core Audio on iPhone - any way to change the microphone gain (either for speakerphone mic or headphone mic)?

After much searching the answer seems to be no, but I thought I'd ask here before giving up. For a …

iphone cocoa-touch core-audio microphone audioqueueservices

iOS Code to Convert m4a to WAV

Does anyone have any code snippets that show how to convert an M4a file to WAV? I know there …

ios audio core-audio file-conversion