Audio Queue Services provides a straightforward, low overhead way to record and play audio in OS X. Starting with OS X v10.5, it is the recommended technology to use for adding basic recording or playback features to your Mac app.
Questions tagged [audioqueueservices]
172 questions
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How to read Audio queue service bufer by byte?
I am recording sound from mic input using Audio queue service.
-(void)startRecording{
[self setupAudioFormat:&recordState.dataFormat];
recordState.currentPacket = 0;
OSStatus status;
status =…
Streetboy
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Objective-C - Passing Streamed Data to Audio Queue
I am currently developing an app on iOS that reads IMA-ADPCM audio data in over through a TCP socket and converts it to PCM and then plays the stream. At this stage, I have completed the class that pulls (or should I say reacts to pushes) in the…
DoctorDbx
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How i can work with AvCaptureSession and OpenAL or an other service to play the sound
I like to implement a voice chat, i have first capture audio with CaptureSession and when i try to play the audio, i have some problems.
With OpenAL, i can't have the sound, data have been append in the buffer but no sound out, but captureSession…
user1352128
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How to get the linear PCM from a recording on iPhone?
I want to do something like speaker verification on iPhone (as a course project). And I'm wondering how to get linear PCM from the speaker. I read about the documentation about queue services, and it seems that it records the sound and then store it…
yoyosir
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iPhone 4s mic is worse than iPhone 4 mic
I'm using Audio Queue Framework with sample rate 44100 Hz to record data from the microphone on iPhone.
Then I test frequency response for iPhone 4 and iPhone 4s.
iPhone 4s mic is blind on frequencies higher than 20 kHz unlike iPhone 4.
It seems…
alexey
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Audio output queue on iOS 5
Has anyone ever experienced that an audio output queue in iOS 5 is silent even though the queue is running and no errors are returned?
Downloaded a sample code that had the same issue.
Trenskow
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AudioFileStreamParseBytes returns "pty?" on streamed, recorded data
I am working on an app that involves recording audio on one device and playing it back on another device connected with a socket connection.
I am using Audioqueues to record data on one peer device, and streaming that data OTA, as in SpeakHere…
dagnytaggart
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what is a reasonable set of values for a core audio AudioStreamBasicDescription for an mp3?
I'm try to record some audio to mp3 based on Apple's AudioQueueTool example program; however, when I attempt to create Audio Queue using AudioQueueNewInput I get back the error 1718449215 which according to Apple's documentation means that "The…
user963697
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AVAssestReader stop Audio Callbacks
So I setup an Audio session
AudioSessionInitialize(NULL, NULL, NULL, NULL);
AudioSessionSetActive(true);
UInt32 audioCategory = kAudioSessionCategory_MediaPlayback; //for output audio
OSStatus tErr =…
TurqMage
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AudioQueue not playing the PCM I provide
I am trying to play pcm data in an iOS app using AudioQueues. I provide the pcm data in a buffer like so:
status = AudioQueueEnqueueBuffer(audioQueue!, buffer!, 0, nil)
where the buffer has been filled with:
memcpy(buffer!.pointee.mAudioData,…
TheCodeAspirer
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Is it possible to access decoded audio data from Audio Queue Services?
I have an app in the App Store for streaming compressed music files over the network. I'm using Audio Queue Services to handle the playback of the files.
I would like to do some processing on the files as they are streamed. I tested the data in the…
Ben Baron
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Remove Users from a Teams Call Queue
I have a quick question and I wander if you can help. Does any of you know how to remove a user from a teams call queue using Powershell? For some reason I'm not able to do it through Admin Center.
On admin center I can see 4 items added to the…
Tomas Gonzales
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extracting mp3 file duration using AudioQueueServices
I have implemented a streaming mp3 player using AudioQueueServices, that downloads mp3s over an NSURLConnection. Playback, pausing, and seeking work great, however I can't figure out how to extract the duration of the audio from the mp3 files…
Brad The App Guy
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iOS AudioQueue playing AAC data always delay for 2-3 seconds
Recently I was using AudioQueue to play network AAC data. My plan is that once a AAC data is received, audioqueue enqueue this buffer and play immediately.
When I start audioQueue, I use AudioQueueStart(audioQueue, NULL) to start audioQueue as soon…
Rango
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iPhone dev - AudioQueue Services recording on background
I've built an audio recording app (like 'SpeakHere' demo from apple), and I was wondering how can I modify it to work on BACKGROUND.
Every time I enter background, the AudioQueue callback freezes, and I did not receive a single audio byte.
I've seen…
Lucas
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