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Questions tagged [remoteio]

72 questions
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Eliminating current playing track sound in recording track

I am looking to use RemoteI/O for audio recording and playing.I am very poor to understand core audio, because of that I followed Amazing Audio open source.So far I can able to Record and play with the same code, now I am trying to record through…
ajay
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iOS RemoteIO - AudioUnitAddRenderNotify Callback

I'm trying to do a recording from RemoteIO using AudioUnitAddRenderNotify like this. Basically, I'm not able to get the samples from bus1, which is my input bus. The recordingCallback does not go past this : if (*ioActionFlags &…
lppier
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iOS - RemoteIO AudioUnits, possible to have 2?

I'm trying to do this RemoteIO1 (for recording to buffer) -> kAudioUnitType_Mixer -> RemoteIO2 (for playback of output) RemoteIO1 is used for 2 purposes : 1) To feed audio into the mixer channel 0 2) To record audio from mic to a buffer…
lppier
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Audio Unit: Use sound output as input source

I want to process the stereo output from iOS devices, no matter what application causes them and visualize it in real-time. Is it possible to use the generic output device (or anything else) to get at the audio data which are currently being…
LangerJan
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remoteIO input square wave frequency is low

i input to the audioJack a square wave in the frequency of 2-3 khZ for about 5 seconds. the square wave is 1 and 0 - no negative values. i get some periodic signal that going between -32000 to 32000 (but my signal is positive!? ) i have check how…
Curnelious
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How to connect multiple AudioUnits in Swift?

I currently have a RemoteIO Audio Unit configured and working, it simply takes input, and passes it to output, so I can hear myself through the headphones of my iPhone when I speak into its microphone. The next step in what I want to do is add…
Luke
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Remote IO Audio Unit is not capturing audio from speaker or remote stream

I am using following code to record audio and writing it in file - (void) initializeOutputUnit { OSStatus status; // Describe audio component AudioComponentDescription desc; desc.componentType = kAudioUnitType_Output; …
iosdev1111
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MultiRoute Audio Input in iOS

We've been working with AudioUnits in Core Audio. It is simultaniously a very powerful audio framework, and one of the worst documented which makes it both a joy and a frustration to work with. We want to accomplish something we know iPads had been…
Leonhard Printz
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What is the unit of measurement of raw audio data from Remote I/O unit?

I am recording the raw audio data using Remote I/O unit as given below: static OSStatus performRender(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp…
Rohit Kashyap
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Playing voice from server stream of nsdata using AudioUnit IOS

I am trying to build some kind of VoIP application in iOS. So far I have been able to successfully send the microphone data as a buffer from microphone to the server using GCDAsyncSocket. Now I need to play back the data I receive, which I am really…
dynebuddha
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Active noise cancellation in iOS

I'm trying to do active noise cancellation in iOS using remote I/O. I have been able to get the audio buffer in 8.24 fixed point format and put it in the speaker as well. Right now I'm trying to capture a sinusoidal wave through microphone (using…
rushafi
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consuming audio data from circular buffer in a render callback attached to the input scope of a remoteio audio unit

The title pretty much sums up what I'm trying to achieve. I am trying to use Michael Tyson's TPCircularBuffer inside of a render callback while the circular buffer is getting filled with incoming audio data. I want to send the audio from the render…
user3080284
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Real-time converting the PCM buffer to AAC data for iOS using Remote IO and Audio Convert Service

I'm using Remote IO to get the audio buffer from PCM, I want to real-time send the data to Darwin Server by cellular network (3G network). I choose The AAC format as there is an article from Fraunhofer called "AAC-ELD based Audio Communication on…
Ge Liu
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RemoteIO and Recording AAC on iOS 6

Is anyone using RemoteIO for recording AAC audio on iOS 6? I've noticed that when I'm doing this, it kills the media server on interruption and my interruption callbacks are never called on iOS 6.0. Also, because the media server goes down, it makes…
DogpatchTech
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No audio on iOS app using the RemoteIO AudioUnit when the iPad is restarted

I have a strange issue where an iOS app that I have developed works fine when I build and run it from XCode on the device. However, on restarting the device and running the app, I get no audio at all. If I subsequently kill the app and restart it…
e7mac
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