Hi John, Can you please send through details on how you connected the TLV320AIC3106EVM to the BBB - I am trying to do the same thing.
Cheers, Evan On Monday, May 19, 2014 12:22:39 AM UTC+1, john3909 wrote: > > > From: Raphael Philipe <[email protected] <javascript:>> > Reply-To: <[email protected] <javascript:>> > Date: Sunday, May 18, 2014 at 3:30 PM > To: <[email protected] <javascript:>> > Subject: [beagleboard] Beaglebone Audio Cape Rev B audio Input > > > Hi > > I've acquired an Audio Cape Rev B > http://elinux.org/CircuitCo:Audio_Cape_RevB for my Beaglebone Black. > > Following the instructions I was able to make it work. The audio playback > is working pretty well. However, I cannot test the audio input. I saw that > it is a line level input (line in), so it cannot be connected to a regular > microphone. > > I want to test it through an echo scheme. I will produce some sound > through q source (connected to the line in input of the cape) and check the > response in the audio output, through an earphone. > > I tried to connect the cape line in to the earphone output of an old > cellphone through a male male jack cable (I saw in some forums that the > line level is similar to the earphone output of some appliances, apart from > the impedance difference.). Unfortunately, it didn't work. > > The interesting thing is that when the cable is connected to the cape > audio input and the other connector is unplluged, I can hear the noise from > static, similar to an unplugged to the amplifier electric guitar . > > Can someone suggest me a simple form to test the audio input? > > I don’t have the Audio Cape, but I do have a TLV320AIC3106EVM connected to > my BBB and it works fine. You may want to try the following command: > > arecord -r 44100 -c 1 -f S16_LE -t wav -vv -d 25 example.wav > > This will show you a bar graph in the terminal so you can see the input > levels. I would just connect the output from you phone to the line input of > your audio cape. In another terminal, run amixer to adjust the input levels. > > Regards, > John > > > Regards. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
