From: Eric Fort <[email protected]> Reply-To: <[email protected]> Date: Tuesday, May 20, 2014 at 2:13 PM To: beagleboard <[email protected]> Subject: Re: [beagleboard] Beaglebone Audio Cape Rev B audio Input
> 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. This is true, and if you run alsamixer in a SSH session, it looks much better than in a tty console like minicom. Regards, John > > > 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 don¹t 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] >>> <mailto:beagleboard%[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] >>> <mailto:beagleboard%[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] >> <mailto:beagleboard%[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.
