seeed-voicecard

The drivers for ReSpeaker Mic Hat, ReSpeaker 4 Mic Array, 6-Mics Circular Array Kit, and 4-Mics Linear Array Kit for Raspberry Pi.

Install seeed-voicecard

Get the seeed voice card source code and install all linux kernel drivers

git clone https://github.com/respeaker/seeed-voicecard
cd seeed-voicecard
sudo ./install.sh
sudo reboot

It may probably happen that the driver won't compile with the latest kernel when raspbian rolls out new patches to the kernel. If so, please try sudo ./install.sh --compat-kernel which uses an older kernel but ensures that the driver can work.

ReSpeaker Documentation

Up to date documentation for reSpeaker products can be found in Seeed Studio Wiki!

Coherence

Estimate the magnitude squared coherence using Welch’s method.
Note: 'CO 1-2' means the coherence between channel 1 and channel 2.

# How to get the coherence of the captured audio(a.wav for example).
sudo apt install python-numpy python-scipy python-matplotlib
python tools/coherence.py a.wav

# Requirement of the input audio file:
- format: WAV(Microsoft) signed 16-bit PCM
- channels: >=2

uninstall seeed-voicecard

If you want to upgrade the driver , you need uninstall the driver first.

pi@raspberrypi:~/seeed-voicecard $ sudo ./uninstall.sh 
...
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Please reboot your raspberry pi to apply all settings
Thank you!
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Enjoy !

Technical support

For hardware testing purposes we made a Rasperry Pi OS 5.10.17-v7l+ 32-bit image with reSpeaker drivers pre-installed, which you can download by clicking on this link.

We provide official support for using reSpeaker with the following OS:

• 32-bit Raspberry Pi OS
• 64-bit Raspberry Pi OS

And following hardware platforms:

• Raspberry Pi 3 (all models), Raspberry Pi 4 (all models)

Anything beyond the scope of official support is considered to be community supported. Support for other OS/hardware platforms can be added, provided MOQ requirements can be met.

If you have a technical problem when using reSpeaker with one of the officially supported platforms/OS, feel free to create an issue on Github. For general questions or suggestions, please use Seeed forum.