Help on 2 mic on raspberry pi

[KenoRosarioPH]

Hi Forums! I have a raspberry pi with lcd and a usb sound card dongle. With usb sound card dongle i was able to record sounds from a single microphone. But now i am to record sounds coming from another microphone and record it simultaneously with the other, Can anyone help me how will i interface this "another microphone to my raspberry pi?'' Thank you guys!

[DougieLawson]

How about with two USB sound cards?

[KenoRosarioPH]

I was also thinking about that sir, but i havent tried it yet. im in dobut if it will be working both at the same time. Since on alsamixer only one sound card can be chosen to operate. I havent tried it yet with other programming softwares. I was able to succeed on my goal recording sound and playback it using lazarus and QT on a single usb dongle. Will it work both at the same time sir?

[DougieLawson]

The other, possibly more sane, option is to mix the signals in the analog stage before feeding them into your RPi.
http://www.electroschematics.com/544/3- ... dio-mixer/

[KenoRosarioPH]

Thank you Sir. You're really a great help to me, but one more question sir will i able to separate the mix signals? i need to generate different wav file from both mic.

[KenoRosarioPH]

The topic sir will be used on any noise cancellation project. Since one mic will be my noise signal and the other mic will be my (Preffered signal + noise) signal. That's the one last thing to fill up the project all the of the codes subtracting the two are already made. thankyou sir, Im having a hard part interfacing that 2 microphones.

[davidcoton]

Are you using mono or stereo (pairs of) microphones?
Is the USB microphone input mono or stereo?
If there are two mono microphones and a stereo input, it should be simple to record the two separately as mono channels.

[KenoRosarioPH]

Thanks sir. Luckily i am using 2 mono type Microphones, but my USB sound card dongle have this specifications. Mono microphone input jack/stereo line in.