USB Microphone [S281]

USB Microphone [S281]

https://www.youtube.com/watch?v=ChITet6OuxM

* Specs

Product parameters:

The sensitivity: - 47 db + 4 db

Lower sensitivity: - 3 db at 1.5 V

Working voltage: 4.5 V

The frequency response: 100 to 16 KHZ

SNR: wining - 67 db

Line length: 0.7 to 0.9 M

* Contents

- Check Device

$ lsusb

$ dmesg

- Setup 

$ sudo vi /usr/share/alsa/alsa.conf

defaults.ctl.card 0 => 1

defaults,pcm, card 0 => 1

- Setup Volume

$ alsamixer 

- Recording

$ arecord -D plughw:1,0 -c 1 -f S16_LE -r 44100 test.wav

- Play 

$ aplay test.wav