66 lines
2.9 KiB
Markdown
66 lines
2.9 KiB
Markdown
# seeed-voicecard
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The drivers for [ReSpeaker Mic Hat](https://www.seeedstudio.com/ReSpeaker-2-Mics-Pi-HAT-p-2874.html), [ReSpeaker 4 Mic Array](https://www.seeedstudio.com/ReSpeaker-4-Mic-Array-for-Raspberry-Pi-p-2941.html), [6-Mics Circular Array Kit](), and [4-Mics Linear Array Kit]() for Raspberry Pi.
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### Install seeed-voicecard
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Get the seeed voice card source code and install all linux kernel drivers
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```bash
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git clone https://github.com/respeaker/seeed-voicecard
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cd seeed-voicecard
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sudo ./install.sh
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sudo reboot
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```
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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.
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## ReSpeaker Documentation
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Up to date documentation for reSpeaker products can be found in [Seeed Studio Wiki](https://wiki.seeedstudio.com/ReSpeaker/)!
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### Coherence
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Estimate the magnitude squared coherence using Welch’s method.
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Note: 'CO 1-2' means the coherence between channel 1 and channel 2.
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```bash
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# How to get the coherence of the captured audio(a.wav for example).
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sudo apt install python-numpy python-scipy python-matplotlib
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python tools/coherence.py a.wav
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# Requirement of the input audio file:
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- format: WAV(Microsoft) signed 16-bit PCM
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- channels: >=2
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```
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### uninstall seeed-voicecard
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If you want to upgrade the driver , you need uninstall the driver first.
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```
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pi@raspberrypi:~/seeed-voicecard $ sudo ./uninstall.sh
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...
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------------------------------------------------------
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Please reboot your raspberry pi to apply all settings
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Thank you!
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------------------------------------------------------
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```
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Enjoy !
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### Technical support
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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](https://files.seeedstudio.com/linux/Raspberry%20Pi%204%20reSpeaker/2021-05-07-raspios-buster-armhf-lite-respeaker.img.xz).
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We provide official support for using reSpeaker with the following OS:
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- 32-bit Raspberry Pi OS
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- 64-bit Raspberry Pi OS
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And following hardware platforms:
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- Raspberry Pi 3 (all models), Raspberry Pi 4 (all models)
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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.
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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](https://forum.seeedstudio.com/c/products/respeaker/15).
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