Difference between revisions of "ReSpeaker 4-Mic Array for Raspberry Pi"

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== ReSpeaker 4-Mic Array ==
 
== ReSpeaker 4-Mic Array ==
  
−
=== Pour Raspberry Pi ===
+
=== Version pour Raspberry Pi ===
 
[[File:ReSpeaker_01.jpg|300px]]
 
[[File:ReSpeaker_01.jpg|300px]]
 +
[[File:ReSpeaker_02.png|500px]]
  
−
[[File:ReSpeaker_02.jpg|300px]]
+
=== Montage ===
 +
[[File:ReSpeaker_04.jpg |300px]]
 +
[[File:ReSpeaker_03.jpg |400px]]
  
−
=== section 2 ===
+
 
−
=== section 3 ===
+
----
 +
 
 +
Assurez-vous que les broches sont correctement alignés.
 +
 
 +
Attention '''le branchement à chaud peut endommager ReSpeaker''' .
 +
 
 +
Veuillez faire l’assemblage avec le  Raspberry Pi une fois cette dernière éteint ('''Power Off''')
 +
=== Step 1. ===
 +
installation des pilotes
 +
 
 +
The AC108 codec is not supported by Pi kernel builds currently, we have to build it manually.
 +
 
 +
'''1.''' Please Make sure running the lastest Raspbian Operating System(debian 9) on Pi. (updated at 2018.6.27)
 +
 
 +
=== Step 2. ===
 +
'''2.''' Get the seeed voice card source code.
 +
<pre>
 +
sudo apt-get update
 +
sudo apt-get upgrade
 +
git clone https://github.com/respeaker/seeed-voicecard.git
 +
cd seeed-voicecard
 +
sudo ./install.sh
 +
reboot
 +
</pre>
 +
 
 +
=== Step 3 ===
 +
'''3.''' Then select the headphone jack on Raspberry Pi for audio output:
 +
<pre>
 +
sudo raspi-config
 +
# Select 7 Advanced Options
 +
# Select A4 Audio
 +
# Select 1 Force 3.5mm ('headphone') jack
 +
# Select Finish
 +
</pre>
 +
 
 +
=== Step 4. ===
 +
'''4.''' Check that the sound card name looks like this:
 +
<pre>
 +
 
 +
pi@raspberrypi:~/seeed-voicecard $ 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
 +
</pre>
 +
If we want to change the alsa settings, we can use
 +
<pre>
 +
sudo alsactl --file=ac108_asound.state store
 +
</pre>
 +
to save it. And when we need to use the settings again, copy it to:
 +
<pre>
 +
sudo cp ~/seeed-voicecard/ac108_asound.state /var/lib/alsa/asound.state
 +
</pre>
 +
 
 +
=== Step 5. ===
 +
'''5.''' Open Audacity and select '''AC108 & 4 channels''' as input and '''bcm2835 alsa: - (hw:0:0)''' as output to test:
 +
<pre>
 +
$ sudo apt update
 +
$ sudo apt install audacity
 +
$ audacity                      // run audacity
 +
</pre>
 +
 
 +
[[File:audacity.jpg|600px]]
 +
 
 +
=== Step 6. ===
 +
'''6.''' Or we could record with '''arecord''' and play with '''aplay''':
 +
<pre>
 +
arecord -Dac108 -f S32_LE -r 16000 -c 4 hello.wav    // only support 4 channels
 +
aplay hello.wav                                      // make sure default device
 +
    // Audio will come out via audio jack of Raspberry Pi
 +
 
 +
</pre>
 +
 
 +
=== section 8 ===
 +
http://wiki.seeedstudio.com/ReSpeaker_4_Mic_Array_for_Raspberry_Pi/
 +
 
 +
[http://wiki.seeedstudio.com/ReSpeaker_4_Mic_Array_for_Raspberry_Pi/ ReSpeaker_4_Mic_Array_for_Raspberry_Pi]

Latest revision as of 23:36, 11 August 2018

ReSpeaker 4-Mic Array

Version pour Raspberry Pi

ReSpeaker 01.jpg ReSpeaker 02.png

Montage

ReSpeaker 04.jpg ReSpeaker 03.jpg


Assurez-vous que les broches sont correctement alignés.

Attention le branchement à chaud peut endommager ReSpeaker .

Veuillez faire l’assemblage avec le Raspberry Pi une fois cette dernière éteint (Power Off)

Step 1.

installation des pilotes

The AC108 codec is not supported by Pi kernel builds currently, we have to build it manually.

1. Please Make sure running the lastest Raspbian Operating System(debian 9) on Pi. (updated at 2018.6.27)

Step 2.

2. Get the seeed voice card source code. 

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

Step 3

3. Then select the headphone jack on Raspberry Pi for audio output: 

	sudo raspi-config
	# Select 7 Advanced Options
	# Select A4 Audio
	# Select 1 Force 3.5mm ('headphone') jack
	# Select Finish

Step 4.

4. Check that the sound card name looks like this: 


	pi@raspberrypi:~/seeed-voicecard $ 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

If we want to change the alsa settings, we can use 

	sudo alsactl --file=ac108_asound.state store

to save it. And when we need to use the settings again, copy it to: 

	sudo cp ~/seeed-voicecard/ac108_asound.state /var/lib/alsa/asound.state

Step 5.

5. Open Audacity and select AC108 & 4 channels as input and bcm2835 alsa: - (hw:0:0) as output to test: 

	$ sudo apt update
	$ sudo apt install audacity
	$ audacity                      // run audacity

Audacity.jpg

Step 6.

6. Or we could record with arecord and play with aplay: 

	arecord -Dac108 -f S32_LE -r 16000 -c 4 hello.wav    // only support 4 channels
	aplay hello.wav                                      // make sure default device
							     // Audio will come out via audio jack of Raspberry Pi

section 8

http://wiki.seeedstudio.com/ReSpeaker_4_Mic_Array_for_Raspberry_Pi/

ReSpeaker_4_Mic_Array_for_Raspberry_Pi

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