rpi-voice-assistant

A Raspberry Pi based voice assistant running logic on Voiceflow

Preparation

Hardware

You must have a Python3-enabled system with audio input/output capability. The audio capture device must be capable of capturing at 16Khz.

System dependencies

This application requires the PyAudio package that has system dependencies:

sudo apt-get install -y python3 python3-pip python3-all-dev python3-pyaudio portaudio19-dev libsndfile1 mpg123

Python dependencies

Python dependencies can be installed with the following command:

pip3 install -r requirements.txt

GCP Account

The RPI voice assistant requires Google Speech-to-text API access.
Make sure that your user/service account has the correct access permissions.
Setup instructions can be found on the official guide.

App configuration

The Voiceflow API key must be specified as an environment variable VF_API_KEY. You can learn more about Voiceflow API keys and how to generate them here.

To run the application, you must specify the following in the config.yaml:

Parameter	Purpose
vf_DiagramID	The Voiceflow diagram ID of your target skill
vf_VersionID	The Voiceflow runnable version ID of your target skill
wakeword	A list of porcupine-supported wake word(s) that can be used to invoke the system

Usage

Run

python3 ./src/main.py