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README.md

PvRecorder Demo for Go

This project contains a Go 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.

Compatibility

  • Go 1.16+
  • Runs on Linux (x86_64), macOS (x86_64 and arm64), Windows (x86_64), and Raspberry Pi (Zero, 3, 4, 5).
  • Windows: The demo requires cgo, which means that you need to install a gcc compiler like Mingw to build it properly.

Usage

NOTE: The working directory for the following go commands is:

pvrecorder/demo/go

In the following instructions, we will refer to {AUDIO_DEVICE_INDEX} as the index of the audio device to use, and {OUTPUT_WAV_PATH} as the file path to save the audio data in wav format.

{AUDIO_DEVICE_INDEX} defaults to -1 and {OUTPUT_WAV_PATH} can be empty if you wish to not save any data.

To show the available audio devices run:

go run demo.go --show_audio_devices

To run PvRecorder run:

go run demo.go --audio_device_index {AUDIO_DEVICE_INDEX} --output_wav_path {OUTPUT_WAV_PATH}