core-audio

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OS X: How to pipe audio output through a processing algorithm?

What does one have to do to capture the output audio stream from an application (iTunes, QuckTime, VLC, whatever...) do some processing, maybe modify it and then send it back to the output? Any kind o[详细]

2023-03-17 18:51 分类：问答
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.[详细]

2023-03-17 06:58 分类：问答
How to stop Repeated Audio play in Audio Mixer (MixerHost) for iOS

I have got Audio Mixer(MixerHost) sample code from Apple iOS. This code is working fine. It is playing the sample Audio files continuously. Can you tell me how to stop my Mixer code to stop after pla[详细]

2023-03-14 14:36 分类：问答
What is the difference between AudioFileOpenURL and ExtAudioFileOpenURL?

If I use ExtAudioFile in conjunction with a remoteIO audio unit, I can use ExtAudioFileSetProperty with kExtAudioFileProperty_ClientDataFormat to convert the audio format read from disk into a device[详细]

2023-03-14 10:18 分类：问答
Sending bytes/data from C class to an Objective-C class

I am using the apple example code SpleakHere. in this code there is a calss called AQRecorder, it is a C class. i want to s开发者_开发百科end the sound bytes to an objective-c object i have. this obje[详细]

2023-03-13 20:22 分类：问答
Change Volume on Mac programmatically

I\'m looking for a not applescript way 开发者_开发知识库to change the system volume on Mac OS X programmatically.[详细]

2023-03-12 00:20 分类：问答
How would you connect an iPod library asset to an Audio Queue Service and process with an Audio Unit?

I need to process audio that comes from the iPod library. The only way to read an asset for the iPod library is AVAssetReader. To process audio with an Audio Unit it needs to be in stereo format so I[详细]

2023-03-11 20:03 分类：问答
How can I save array of samples as audio file in iPhone?

I have a sound as array of samples. How can I save this as audio file? I have examined iPhone开发者_如何学C Core Audio APIs.[详细]

2023-03-11 17:08 分类：问答
Audio recording problem

I am trying to use Apple\'s RecordAudioToFile and MyRecorder examples. The first example runs well and the file is recorded but I can\'t hear any sound. And the second example, whe开发者_StackOverflow[详细]

2023-03-11 16:02 分类：问答
Counting audio power peaks iOS

Edited the question due to progressive insights :-) I am creating an app that is listening to the audio input.[详细]

2023-03-10 08:54 分类：问答