Thanks, I also managed to subsequently dig this up http://article.gmane.org/gmane.comp.hardware.beagleboard.user/63099.
I'll probably try the same thing but inject the 1.8V from my bench supply. On 30 Sep 2014, at 20:50, evilwulfie <[email protected]> wrote: > 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]> >> Reply-To: <[email protected]> >> Date: Sunday, May 18, 2014 at 3:30 PM >> To: <[email protected]> >> 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]. >> 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. > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the Google > Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/tQpS9jL97iI/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [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.
