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Porcupine Wake Word
Python Quick Start


Platforms

  • Linux (x86_64)
  • macOS (x86_64, arm64)
  • Windows (x86_64)
  • BeagleBone
  • NVIDIA Jetson Nano
  • Raspberry Pi (Zero, 2, 3, 4)

Requirements

  • Picovoice Account & AccessKey
  • Python 3
  • PIP

Picovoice Account & AccessKey

Signup or Login to Picovoice Console to get your AccessKey. Make sure to keep your AccessKey secret.

Quick Start

Setup

  1. Install Python 3 .

  2. Install the pvporcupine Python package using PIP:

pip3 install pvporcupine

Usage

Create an instance of Porcupine that detects the included built-in wake words porcupine and bumblebee:

import pvporcupine
porcupine = pvporcupine.create(
access_key='${ACCESS_KEY}',
keywords=['picovoice', 'bumblebee']
)

Pass in frames of audio to the .process function:

def get_next_audio_frame():
pass
while True:
audio_frame = get_next_audio_frame()
keyword_index = porcupine.process(audio_frame)
if keyword_index == 0:
# detected `porcupine`
elif keyword_index == 1:
# detected `bumblebee`

Release resources explicitly when done with Porcupine:

porcupine.delete()

Custom Keywords

Create custom keywords using the Picovoice Console . Download the custom wake word file (.ppn) and create an instance of Porcupine using the keyword_paths input argument:

porcupine = pvporcupine.create(
access_key='${ACCESS_KEY}',
keyword_paths=['${KEYWORD_FILE_PATH}']
)

Non-English Languages

Use the corresponding model file (.pv) to detect non-English wake words. The model files for all supported languages are available on the Porcupine GitHub repository .

Pass in the model file using the model_path input argument to change the detection language:

porcupine = pvporcupine.create(
access_key='${ACCESS_KEY}',
keyword_paths=['${KEYWORD_FILE_PATH}'],
model_path='${MODEL_FILE_PATH}'
)

Demo

For the Porcupine Python SDK, we offer demo applications that demonstrate how to use the wake word engine on real-time audio streams (i.e. microphone input) and audio files.

Setup

Install the pvporcupinedemo Python package using PIP:

pip3 install pvporcupinedemo

This package installs command-line utilities for the Porcupine Python demos.

Usage

Use the --help flag to see the usage options for the demo:

porcupine_demo_mic --help

Ensure you have a working microphone connected to your system and run the following command to detect the built-in keyword porcupine:

porcupine_demo_mic --access_key ${ACCESS_KEY} --keywords porcupine

For more information on our Porcupine demos for Python, head over to our GitHub repository .

Resources

Packages

  • pvporcupine on PyPI
  • pvporcupinedemo on PyPI

API

  • pvporcupine Python API Docs

GitHub

  • Porcupine Python SDK on GitHub
  • Porcupine Python Demos on GitHub

Benchmark

  • Wake Word Benchmark

Further Reading

  • Add Voice Interfaces to Python Apps, in Minutes!

Video

  • Porcupine Wake Word Engine - Python SDK - Radio Button Demo

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Porcupine Wake Word Python Quick Start
  • Platforms
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