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c++ - What is a sample format? - Stack Overflow
https://stackoverflow.com/questions/47961954/what-is-a-sample-format#:~:text=PortAudio%20provides%20samples%20in%20raw%20PCM%20format.%20That,this%20is%20a%20value%20from%20-32768%20to%2032767.
PortAudio: portaudio.h File Reference
http://portaudio.com/docs/v19-doxydocs/portaudio_8h.html
The sample format of both the input and output buffers provided to the callback or passed to and from Pa_ReadStream and Pa_WriteStream. sampleFormat may be any of the formats described by the PaSampleFormat enumeration. sampleRate: Same as Pa_OpenStream parameter of the same name. framesPerBuffer: Same as Pa_OpenStream parameter of the same name.
Audio::PortAudio - metacpan.org
https://metacpan.org/pod/Audio::PortAudio
my $api = Audio::PortAudio::default_host_api(); my $device = $api->default_input_device; my $stream = $device->open_read_stream( { channel_count => 2, sample_format => 'float32' }, $sample_rate, $frames_per_buffer, $stream_flags ); my $buffer = ""; while (1) { $stream->read($buffer,$number_of_frames); my @samples = unpack("f".($number_of_frames * …
022 - Well Defined Sample Conversion Semantics - …
http://portaudio.com/docs/proposals/022-WellDefinedSampleConversionSemantics.html
The PortAudio V19 conversion infrastructure includes generalised format conversion code which implementations use to convert between all supported sample formats (linear signed and unsigned 8 bit, signed 16, 24 and 32 bit, and 32 bit floating point). The client may also choose to have samples clipped and/or dithered during the conversion process.
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