in my use of audio and this card from the console I found alasmixer much easier to use. I just went through and set all the levels to 100% and it works well. Try using alsamixer it should get things fixed up in an easy and intuitive way. F1 and the man page cover the controls.
Eric On Tue, May 20, 2014 at 3:40 AM, Raphael Philipe <[email protected]> wrote: > It seems that I messed with the amixer parameters. Now I can not even > hear from the speaker test. Is there a way of reseting alsa > parameters, not only the general audio volume? > > I saw something like > alsactl restore -P > and removing '/var/lib/alsa/asound.state > but it didn't work for parameters specifically to the DA830 EVM. > > Why the audio cape is recognized as a DA830 EVM? > > I suspect that the audio input is not working due to one of that > parameters. > > Regards, Raphael. > > On Sun, May 18, 2014 at 8:22 PM, John Syn <[email protected]> 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 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.
