라즈베리 파이 USB 사운드 카드로 녹음 및 재생하기

USB 사운드 카드가 잠시 생겨 일단 테스트 해보고 싶은 마음에 찾아보니..

arecord --device=hw:1,0 --format S16_LE --rate 44100 -c1 test.wav -V mono aplay --device=plughw:1,0 test.wav

[링크 : https://www.instructables.com/id/How-to-Record-Voice-With-USB-Microphone-Then-Play-/]

speaker-test -c2 -D plughw:1,0

[링크 : https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/testing-audio]

[링크 : https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/recording-audio]

[링크 : https://scribles.net/voice-recording-on-raspberry-pi/]

[링크 : https://linux.die.net/man/1/arecord]

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[433655.786504] usb 1-1.4: new full-speed USB device number 4 using dwc_otg [433655.924800] usb 1-1.4: New USB device found, idVendor=0d8c, idProduct=013c [433655.924820] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [433655.924831] usb 1-1.4: Product: USB PnP Sound Device [433655.936390] input: USB PnP Sound Device as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.3/0003:0D8C:013C.0001/input/input1 [433656.007216] hid-generic 0003:0D8C:013C.0001: input,hidraw0: USB HID v1.00 Device [USB PnP Sound Device] on usb-3f980000.usb-1.4/input3 [433656.114545] usbcore: registered new interface driver snd-usb-audio

$ arecord -l **** List of CAPTURE Hardware Devices **** card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]   Subdevices: 1/1   Subdevice #0: subdevice #0

$ 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: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]   Subdevices: 1/1   Subdevice #0: subdevice #0

일단 해보는데 극성이 문제인지

그냥은 안되고 마이크 쇼트 시키니 볼륨 메터가 뜨긴 한다.

결론 : 되긴하는데 마이크를 잘 골라야 할지도?

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2019.09.11

윈도우에서 꽂으니 아래와 같은 식별자로 뜬다.

일단은(?) CM108 인듯?

[링크 : https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/figure-out-your-chipset]

[링크 : https://www.raspberrypi.org/forums/viewtopic.php?t=74982]