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ios - AudioStreamBasicDescription setting values for wav ...
https://stackoverflow.com/questions/28351743/audiostreambasicdescription-setting-values-for-wav
afinfo BlameItOnTheNight.wav File: BlameItOnTheNight.wav File type ID: WAVE Num Tracks: 1 ---- Data format: 2 ch, 44100 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer no channel layout. estimated duration: 9.938141 sec audio bytes: 1753088 audio packets: 438272 bit rate: 1411200 bits per second packet size upper bound: 4 maximum packet size: 4 …
ios - Example of AudioStreamBasicDescription for 16hz ...
https://stackoverflow.com/questions/35191058/example-of-audiostreambasicdescription-for-16hz-16bit-mono-format-as-wav-file
And IIRC ARM devices are by default little endian so the kAudioFormatFlagsNativeEndian flag should be valid for wav files. – O2U. Feb 4 '16 at 16:08. See additions to my answer. Start with a more common 44.1 stereo asbd to find the unsupported parameter. ... what is a reasonable set of values for a core audio …
AudioStreamBasicDescription Struct (AudioToolbox ...
https://docs.microsoft.com/en-us/dotnet/api/audiotoolbox.audiostreambasicdescription
Audio packet stream description. ... Remarks. The audio stack processes audio as a stream of audio packets. This data structure is used to describe the contents of these audio packets and contains information like the sample rate used for the audio samples, the format of the individual audio packets, the number of channels in the packets and the bits per channel, and so on.
Apple Developer Documentation
https://developer.apple.com/documentation/coreaudiotypes/audiostreambasicdescription
A sample is single numerical value for a single audio channel in an audio stream. A frame is a collection of time-coincident samples. For instance, a linear PCM stereo sound file has two samples per frame, one for the left channel and one for the right channel. A packet is a collection of one or more contiguous frames. A packet defines the smallest meaningful set of frames for …
Core Audio: a quick example using Extended Audio File ...
https://vboehm.net/2017/01/core-audio-a-quick-example-using-extended-audio-file-services/
Core Audio: a quick example using Extended Audio File Services. ... Zeroing out the AudioStreamBasicDescription structure before populating the specific fields is a good idea, as with some formats we don’t know (and can’t know) every single field in advance and need to set those to zero anyway.
Topic: AirPlay problem, sample rate? | Politepix
https://www.politepix.com/forums/topic/airplay-problem-sample-rate/
In that method (which uses ExtAudioFile api) it reads a wav file, including the sample rate, then sets a AudioStreamBasicDescription object with the sample rate to indicate the format for the returned samples. If I set that to 44100, the audio will actually sound fine on Airplay BUT the file is not complete; there is less than 1/2 the audio.
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