http://elinux.org/CircuitCo:Audio_Cape_RevB schematics and everything there
On 9/30/2014 11:35 AM, [email protected] wrote: > 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 > <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 > <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] > <mailto:[email protected]>. > 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.
