PvRecorder 1.0.0

PV_Recorder

A cross platform audio recorder that captures single-channel audio at a sample rate of 16kHz.

Requirements

• .NET Standard 2.0, .NET Core 3.1

Compatibility

• Windows (amd64)
• macOS (x86_64)
• Linux (x86_64)
• Raspberry Pi:
  • 2
  • 3 (32 and 64 bit)
  • 4 (32 and 64 bit)
• NVIDIA Jetson Nano
• BeagleBone

Installation

dotnet add package PvRecorder

Usage

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

using Pv;

string[] devices = PvRecorder.GetAudioDevices();

To start recording initialize the instance and run start:

PvRecorder recorder = PvRecorder.Create(
    deviceIndex: -1, // uses default index
    frameLength: 512,
);

recorder.Start();

Get the pcm frames by calling the read function:

while (true) {
    pcm = recorder.Read();
    // do something with pcm
}

To stop recording just run stop on the instance:

recorder.Stop();

Once you are done, free the used resources. You do not have to call stop before Dispose:

recorder.Dispose();

To have to resources freed immediately after use without explicitly calling the Dispose function, wrap PvRecorder in a using statement:

using(PvRecorder recorder = PvRecorder.Create(deviceIndex: -1, frameLength: 512)) {
    // PvRecorder usage
}