Suppress Noise in 3 Lines of Python

Learn how to suppress background acoustic noise using Picovoice Koala Noise Suppression Python SDK.

Koala Noise Suppression performs speech enhancement locally, keeping your voice data private (i.e. GDPR and HIPAA-compliant by design). Furthermore, by running on the device, Koala guarantees real-time processing with minimum latency. The SDK runs on Linux, macOS, Windows, Raspberry Pi, and NVIDIA Jetson. Koala can also run on Android, iOS, and web browsers.

Noise Suppression, Noise Cancellation, and Speech Enhancement are the same.

Install Noise Suppression Python SDK

Install the SDK:

pip install pvkoala

Log in to (sign up for) Picovoice Console . It is free, and no credit card is required! Copy your AccessKey to the clipboard.

Line 1

Import the package:

import pvkoala

Line 2

Create an instance of the noise cancellation object with your AccessKey:

handle = pvkoala.create(access_key)

Line 3

Suppress noise:

enhanced_pcm = handle.process(pcm)

Koala processes incoming audio in frames. The length of each frame can be attained via handle.frame_length. Koala operations on single-channel and 16 kHz audio.

Source Code

The source code for a fully-working demo with Koala is available on GitHub .