I have a CAD Audio U9 Microphone external microphone with a clear sound on my laptop. I plugged it inside Rpi and the sound is very bad. I have glitches and noise.
I tried to change the gain inside alsamixer. It seems to change anything.
The external usb audio seems to work properly :
pi@raspberrypi:~$ arecord -l
** List of CAPTURE Hardware Devices **
card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevice #0: subdevice #0
I use ffmpeg -f oss -i /dev/dsp1 command. I tried also ffmpeg -f alsa -i hw:1,0. It crashed the Rpi...
Any idea to solve the problem ?