audioqueueservices

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kAudioQueueProperty_CurrentLevelMeter on Mac OS X 10.6.7

I am开发者_StackOverflow querying AudioQueueRef for kAudioQueueProperty_CurrentLevelMeter and code that perfectly worked on 10.6.6 now gives me just zeros in level.mAveragePower and level.mPeakPower.[详细]

2023-02-20 00:39 分类：问答
iPhone Media Player Framework accessing raw file

I\'m interested in using the Media Player framework on iPhone to access audio in the user\'s library.I want to be able to load a given audio file and then perform some specialised filtering on it.[详细]

2023-02-19 02:03 分类：问答
AudioQueue callback in simulator but not on device

I am currently working on an audio processing app on iPhone. it is based on Apple\'s SpeakHere sample code, aims at real-time audio processing and playback. The code works well in simulator, but not c[详细]

2023-02-15 10:37 分类：问答
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.[详细]

2023-02-11 05:10 分类：问答
How to mute background audio while recording (using Audio Queue Services)

I have an application which uses Audio Queues to do recording of spoken user input. This only happens for short durations and only when the user presses a button.[详细]

2023-02-07 21:38 分类：问答
iOS AudioQueues: glitches in audio float-stream

I am logging the stream of floats coming from the microphone (should be silence) I have setup audio queueswith a buffer size of 256 floats[详细]

2023-02-03 19:03 分类：问答
iOS Background Audio Icon

I\'ve followed the API Docs and WWDC Videos exactly, to play audio in the background via an Audio开发者_开发知识库 Session (using the AudioQueue services). It all works just fine, but there is no \"Pl[详细]

2023-01-31 17:55 分类：问答
Setting the input volume on an audio queue

So I can\'t find anything online that says I can\'t do this, but whenever I try to do it on the iPhone, errors are returned from AudioQueueSetParameter. Specifically, if I try this code:[详细]

2023-01-30 18:08 分类：问答
AudioQueueStart fail -12985

I made a streaming music player and it works fine in the foreground. But in the background iOS4, 开发者_StackOverflow中文版it doesn\'t play the next song automatically. ( remote control works )[详细]

2023-01-28 01:28 分类：问答
AudioQueue: Can't read raw data in AudioFileReadPackets

I\'m working on a DSP related iOS app. Part of the work is to copy audio data from outBuffer ->mAudioData to an user-specified array for data processing. The read method is like this:[详细]

2023-01-26 17:52 分类：问答