PvRecorder Binding for Python

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

• Rust 1.54+

Compatibility

• Linux (x86_64)
• macOS (x86_64 and arm64)
• Windows (x86_64)
• Raspberry Pi:
  • Zero
  • 2
  • 3 (32 and 64 bit)
  • 4 (32 and 64 bit)
• NVIDIA Jetson Nano
• BeagleBone

Installation

To add the pvrecorder library into your app, add pv_recorder to your app's Cargo.toml manifest:

[dependencies]
pv_recorder = "*"

Usage

Getting the list of input devices does not require an instance:

use pv_recorder::PvRecorderBuilder

let audio_devices = PvRecorderBuilder::default().get_audio_devices()?;

To start recording, initialize an instance using the builder and call start():

use pv_recorder::PvRecorderBuilder;

let frame_length = 512;
let recorder = PvRecorderBuilder::new(frame_length).init()?;
recorder.start()?

Read frames of audio:

while recorder.is_recording() {
    let frame = recorder.read()?;
    // process audio frame
}

To stop recording, call stop() on the instance:

recorder.stop()?;

Demo

The PvRecorder Rust demo is a Rust command-line application that demonstrates how to use PvRecorder to record audio to a file.