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PortAudio - an Open-Source Cross-Platform Audio API
http://www.portaudio.com/faq.html#:~:text=PortAudio%20will%20use%20whatever%20sample%20rates%20are%20available,Lopo.%20Brought%20to%20you%20by%20the%20PortAudio%20community.
How to change pitch (sample rate) at run-time with …
https://stackoverflow.com/questions/21046430/how-to-change-pitch-sample-rate-at-run-time-with-portaudio
Resampling is not a capability of PortAudio. Like the native audio i/o APIs that PortAudio wraps, PA streams run at a constant sample rate. To change the pitch (playback rate) of a sample you need perform on the fly sample rate conversion. You can do this by interpolating the original signal using a phase index that increments at some non-unity ...
PortAudio - an Open-Source Cross-Platform Audio API
http://www.portaudio.com/faq.html
PortAudio will use whatever sample rates are available on the host. PortAudio does not provide any additional sample rate conversion capability. If you need a sample rate that is not available then you might want to use the SRC (Sample Rate Conversion) library by Eric de Castro Lopo.
WASAPI: how to use a different sample rate than theshared ...
https://portaudio.music.columbia.narkive.com/42jMF0Dx/wasapi-how-to-use-a-different-sample-rate-than-theshared-format
WASAPI does not do any frame rate conversion, so in Shared mode your app must send data with the same frame rate (and resample it if needed) as reported by the audio device. So, the attempt to open device in Shared mode with 22050 Hz frequency will fail if device reports 48000 Hz.
PortAudio - an Open-Source Cross-Platform Audio API
PortAudio is a free, cross-platform, open-source, audio I/O library.It lets you write simple audio programs in 'C' or C++ that will compile and run on many platforms including Windows, Macintosh OS X, and Unix (OSS/ALSA).
Asynchrounous Audio Sample Rate Conversion with gstreamer
https://gstreamer-devel.narkive.com/oUoa2zeg/asynchrounous-audio-sample-rate-conversion-with-gstreamer
2016-05-01 07:31:04 UTC. Permalink. Hi,Â. in some use cases (broadcast digital radio or IP radio), the. transmitter is sending an audio stream with a nominal sampling rate. (e.g. 48kHz). When a receiver, expecting 48KHz, wants to play these samples on a. local sound sink, then there is always the problem, that the.
PortAudio: pa_process.h File Reference
http://www.portaudio.com/docs/v19-doxydocs-dev/pa__process_8h.html
sampleRate: Sample rate of the stream. The more accurate this is the better - it is used for updating time stamps when adapting buffers. streamFlags: Stream flags as passed to Pa_OpenStream, this parameter is used for selecting special sample conversion options such as clipping and dithering. framesPerUserBuffer
CL-PortAudio references - GitHub Pages
https://filonenko-mikhail.github.io/cl-portaudio/
For example, PortAudio doesn't provide sample rate conversion if you request a sample rate that is not supported by the native audio API. Another example is that the ASIO SDK only allows one device to be open at a time, so PortAudio/ASIO doesn't currently support opening multiple ASIO devices simultaneously.
Resample Port (2.10)
https://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__RESAMPLE__PORT.htm
Create a resample port. This creates a bidirectional resample session, which will resample frames when the port's get_frame () and put_frame () is called. When the resample port's get_frame () is called, this port will get a frame from the downstream port and resample the frame to the target clock rate before returning it to the caller.
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