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pv_recorder_demo.c
pv_recorder_demo.c
 
 

README.md

PvRecorder Demo for C

This project contains a C command-line demo for PvRecorder that demonstrates how to use PvRecorder to record audio to a WAV file.

PvRecorder

PvRecorder is an easy-to-use, cross-platform audio recorder designed for real-time speech audio processing. It allows developers access to an audio device's input stream, broken up into data frames of a given size.

Requirements

  • CMake 3.4+.
  • C99 compatible compiler.
  • Windows: MinGW.

Compatibility

  • Linux (x86_64)
  • macOS (x86_64, arm64)
  • Windows (amd64, arm64)
  • Raspberry Pi (Zero, 3, 4, 5)

Compiling

Run the following commands to build the demo app:

git submodule update --init --recursive
cmake -S . -B build -DPV_RECORDER_PLATFORM={PV_RECORDER_PLATFORM}
cmake --build build

The {PV_RECORDER_PLATFORM} variable will set the compilation flags for the given platform. Exclude this variable to get a list of possible values.

Usage

To see the usage options for the demo:

./pv_recorder_demo

Get a list of available audio recording devices:

./pv_recorder_demo --show_audio_devices

Record to a file with a given audio device index:

./pv_recorder_demo -o test.wav -d 2

Hit Ctrl+C to stop recording. If no audio device index (-d) is provided, the demo will use the system's default recording device.