pvrecorder

PvRecorder Binding for Go

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), Raspberry Pi (all variants), NVIDIA Jetson (Nano), and BeagleBone.

Installation

go get github.com/Picovoice/pvrecorder/binding/go

Usage

Initialize and begin recording:

import . "github.com/Picovoice/pvrecorder/binding/go"

recorder = NewPvRecorder(/*FrameLength*/512)
recorder.Init()
if err != nil {
    // handle init error
}
defer recorder.Delete()

err = recorder.Start()
if err != nil {
    // handle start error
}

(or)

Use GetAvailableDevices() to get a list of available devices and then initialize the instance based on the index of a device:

import . "github.com/Picovoice/pvrecorder/binding/go"

devices = GetAvailableDevices() // select index of device

recorder = NewPvRecorder(/*FrameLength*/512)
recorder.DeviceIndex = 0
recorder.Init()
if err != nil {
    // handle init error
}
defer recorder.Delete()

err = recorder.Start()
if err != nil {
    // handle start error
}

Get a frame of audio by calling the Read() function:

frame, err := recorder.Read()
if err != nil {
    // handle error
}

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

recorder.Stop()

Once you are done, free the resources acquired by PvRecorder. You do not have to call stop() before delete():

recorder.Delete()

Demo

For more detailed information on how to use the PvRecorder Go binding, please that a look at demo/demo.go.