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3.2.2 Array Microphone Usage Guide

Last Version: 10/09/2025

This guide explains how to set up an array microphone, install the required environment, and capture audio using the Python example program.

Clone Repository​

Clone the example code repository and navigate to the NLP example directory:

git clone https://gitee.com/bianbu/spacemit-demo.git
cd spacemit-demo/examples/NLP

Install Runtime Environment​

Install necessary system packages, create a Python virtual environment, and install the Python dependencies:

sudo apt install libportaudio2 libopenblas-dev python3-venv python3-pip

python3 -m venv .venv
source .venv/bin/activate

pip install -r requirements.txt

Start Voice Capture Program​

Run the following command to start capturing audio from the array microphone:

python 04_asr_demo_db.py
  • Press Enter to begin recording.
  • The program captures mono audio.
  • Maximum recording duration per session is 5 seconds.