2 c media usb audio device full#
2 c media usb audio device software#

I then tried a microphone recovered from a car hands-free installation (3-pole plug).

2-pole) but could get no useful sound recorded. The microphone I set out to use was a Sony make from a media center or some such but with 3.5 mm mono plug (i.e. USB is also a C-Media.Īfter extensive testing and reading including the above I discovered that the microphone sensitivity or maybe input impedance is the key to these issues. I have a similar aim as the OP and encountered the same problems with mic output but I am using a Raspberry Pi Zero W. This guy also reports he had to turn down the volume to about 50% to record anything. So either its a power issue or it really needs to be stereo somehow. Putting the line out (stereo) of my laptop in the mic in of the usb card it did record! Putting the mic of my turtle beach headset (stereo jack, although might be mono output) in the mic in of the usb card did not result in a signal. Update: problem probably with input type / power

2 c media usb audio device software#

Im kind of leaning to it being a connector problem in some way, but still might be some software issue I dont understand too. Still I havent been able to get the mic to record anything and Im getting a little hopeless.

2 c media usb audio device full#

So I tried all kinds of combinations with my mono mics and some stereo jack plugs: recording with mic fully plugged in, plugged in half, plugged in a stereo jack splitter with one mic plugged in full and one mic plugged in half. On the other hand I already tried pretty much every software solution I could find but I really think the settings are correct. I thought since a mono jack connects to all wires even if in a stereo jack. make sure your mic plug is stereo (is that a possible cause?) set the 'speed' to 1 (didnt understand this one) set format to S16_LE (arecord already showed this) set usb card as default (shouldnt matter when using -plughw:1 right?) make sure you boost the mic gain (I did) add sndbcm2835 (did that but already seemed to be there) make sure your user has audio rights (mine did from the start) make sure the system sees the usb dongle (it does) All of them list the problem as solved in the end and all the solutions amount to one of the following (some seemed specific for Wheezy): I have found many people running into problems setting up a mic on the Pi, some people run into extra problems when using the C-media chipset. Playing back the file I hear nothing, if I turn up the volume really high I hear some static. Running arecord -D plughw:1 -duration=5 -v -V mono testmic.wav starts the recording without errors, shows the settings of the device (format = S16_LE, which is correct) and a vumeter (showing between 0 and 2% even if I bang the mic on the table). lsusb shows the dongle, cat /proc/asound/cards shows it as device 1 (not 0) and arecord -l shows the usb as the only capture device (which is correct). The same goes for alsamixer (they show identical settings). I use the hdmi out for sound output and would like to keep it that way.Īlready in the GUI I can see the USB card and I can unmute the mic, boost its gain and turn off auto-gain. I have a couple of microphones laying around and plugged the (mono) jack of one of those into the mic line in of the USB dongle. I bought a 'Speedlink' USB soundcard which uses a C-media chipset and connected it directly to my Pi. I would like to use Amazon Alexa or Steven Hicksons Voicecommander (uses Google) on my Pi to automate some tasks by voice command, but I am having trouble getting the microphone to work in the first place.