python

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.

Compatibility

• Python 3.5+
• Runs on Linux (x86_64), macOS (x86_64 and arm64), Windows (x86_64), Raspberry Pi (all variants), NVIDIA Jetson (Nano), and BeagleBone.

Installation

pip3 install pvrecorder

Usage

Initialize and begin recording:

from pvrecorder import PvRecorder

recorder = PvRecorder(frame_length=512)
recorder.start()

(or)

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

from pvrecorder import PvRecorder

devices = PvRecorder.get_available_devices()

recorder = PvRecorder(frame_length=512, device_index=0)
recorder.start()

Read frames of audio:

while recorder.is_recording:
    frame = recorder.read()
    # process audio frame

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()

Demos

pvrecorderdemo provides command-line utilities for recording audio to a file.