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This is an enhancement fork with the explicit aim of supporting current shipping Raspbian/Ubuntu kernels without requiring downgrading. Please donate at https://hintak.github.io/ if it works for you. Use vX.Y branch for kernel version vX.Y
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Baozhu Zuo 41fbb892b9 Merge pull request #8 from yexiaobo-seeedstudio/master 
update readme and highlight syntax
2017-09-18 14:58:34 +08:00
ac108_plugin ac108_plugin version 1: only support channel=4 2017-09-18 09:40:50 +08:00
ac108.c add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
ac108.h add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
ac108_asound.state update ac108_asound.state asound.conf 2017-09-14 20:14:10 +08:00
asound.conf update ac108_asound.state asound.conf 2017-09-14 20:14:10 +08:00
builddtbo.sh add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
default.pa add pulseaudio default configuration file 2017-09-08 04:12:53 +00:00
dkms.conf add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
install.sh optimize some options 2017-09-15 02:01:53 +00:00
LICENSE Create LICENSE 2017-09-15 10:14:31 +08:00
Makefile change the install dir 2017-09-14 09:26:20 +00:00
README.md update readme and highlight syntax 2017-09-18 14:31:53 +08:00
seeed-2mic-voicecard-overlay.dts add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
seeed-2mic-voicecard.dtbo add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
seeed-4mic-voicecard-overlay.dts add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
seeed-4mic-voicecard.dtbo add respeaker 4mic audio card driver 2017-09-14 08:29:26 +00:00
wm8960.c remove debug message 2017-05-22 15:49:41 +08:00
wm8960.h add wm8960.h header file 2017-04-27 16:52:22 +08:00
wm8960_asound.state optimize some options 2017-09-15 02:01:53 +00:00

README.md

seeed-voicecard

Join the chat at https://gitter.im/seeed-voicecard/Lobby

While the upstream wm8960 codec is not currently supported by current Pi kernel builds, upstream wm8960 has some bugs, we had fixed it. we must it build manually.

We also write ac108 rapberry pi linux kernel driver.

Get the seeed voice card source code.

git clone https://github.com/respeaker/seeed-voicecard
cd seeed-voicecard
#for ReSpeaker 2-mic
sudo ./install.sh 2mic

#for ReSpeaker 4-mic
sudo ./install.sh 4mic

#reboot your Raspbian OS
reboot

Check that the sound card name matches the source code seeed-voicecard.

#for ReSpeaker 2-mic
pi@raspberrypi:~/seeed-voicecard $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 8/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: seeed2micvoicec [seeed-2mic-voicecard], device 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
pi@raspberrypi:~/seeed-voicecard $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: seeed2micvoicec [seeed-2mic-voicecard], device 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
pi@raspberrypi:~/seeed-voicecard $ 

#for ReSpeaker 4-mic
pi@raspberrypi:~ $ arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
playback
capture
dmixed
array
ac108
default:CARD=seeed4micvoicec
    seeed-4mic-voicecard, 
    Default Audio Device
sysdefault:CARD=seeed4micvoicec
    seeed-4mic-voicecard, 
    Default Audio Device
dmix:CARD=seeed4micvoicec,DEV=0
    seeed-4mic-voicecard, 
    Direct sample mixing device
dsnoop:CARD=seeed4micvoicec,DEV=0
    seeed-4mic-voicecard, 
    Direct sample snooping device
hw:CARD=seeed4micvoicec,DEV=0
    seeed-4mic-voicecard, 
    Direct hardware device without any conversions
plughw:CARD=seeed4micvoicec,DEV=0
    seeed-4mic-voicecard, 
    Hardware device with all software conversions
pi@raspberrypi:~ $

If you want to change the alsa settings, You can use sudo alsactl --file=asound.state store to save it.

Test:

#for ReSpeaker 2-mic
#It will capture sound an playback on hw:1
arecord -f cd -Dhw:1 | aplay -Dhw:1

#for ReSpeaker 4-mic
#It will capture sound on AC108 and save as a.wav
arecord -Dac108 -f S32_LE -r 16000 -c 4 a.wav

with Google Assistant

if you run the assistant but the playback is speed up considerably, try to configure alsa:

sudo cp asound.conf /etc/asound.conf

If the alsa configuration doesn't solve the issue, try to use pulseaudio. See #4

Enjoy !