PiFm with usb mic

[Claudio Miklos]

Hi all!

I´m trying to use a plantronics headset to test Pifm using the wiki instructions, i already tested the normal operation and received the sound.wav with SDR radio ( R820T usb ).

My question is how to use arecord with this hardware...( or other usb mic)

I have :

pi@raspberrypi ~ $ arecord -L

null

    Discard all samples (playback) or generate zero samples (capture)

sysdefault:CARD=Adapter

    DSP55 Adapter, USB Audio

    Default Audio Device

front:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    Front speakers

surround40:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    4.0 Surround output to Front and Rear speakers

surround41:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    4.1 Surround output to Front, Rear and Subwoofer speakers

surround50:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    5.0 Surround output to Front, Center and Rear speakers

surround51:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    5.1 Surround output to Front, Center, Rear and Subwoofer speakers

surround71:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers

iec958:CARD=Adapter,DEV=0

    DSP55 Adapter, USB Audio

    IEC958 (S/PDIF) Digital Audio Output

pi@raspberrypi ~ $ arecord -l

**** List of CAPTURE Hardware Devices ****

card 1: Adapter [DSP55 Adapter], device 0: USB Audio [USB Audio]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

What device i have to use in the example:

arecord -d0 -c2 -f S16_LE -r 22050 -twav -D copy | sudo ./pifm -

I already know that "-D copy" is a typo... i have tested with various formats wilthout sucess..

If you can please help...