Hi Pedro, I have bought syba usb audio adapter similar to yours. I plugged it in but I am not able to see it on command aplay - L. Please let me know how did you figure out. Also, I would like to know how to set it as default mic in And output. Thanks. On Sep 30, 2013 11:37 PM, "Pedro A. Melendez" <[email protected]> wrote:
> I'm using SYBA usb audio dongle is 11 bucks and it works. It appears as a > second audio device if you dont disable the hdmi cape. > -Pedro > > > On Mon, Sep 30, 2013 at 11:32 PM, <[email protected]> wrote: > >> Hi Priyank, >> >> the audio cape will do the sampling for you. This will release >> a great processing burden from the shoulders of the CPU. The >> A/D-converter (analog to digital converter) of the audio cape >> will do this for you. >> In the simpliest case, you only need to grab the samples and put >> it on SD-card/disc (raw format). This means recording. In case >> of an hearing aid, this is not that useful, since you will "hear it >> later", hahahaha! :) >> Take a deep look into the datasheet of the tlv320aic3106, which is >> TIs audio processor they put on the audio cape. This little beast is >> capable of much more than simple sampling. For example you will get >> a maximum sampling rate of 96 kHz, which means -- capable microphones >> provided -- you can sample sound up to 24 kHz. >> One thing: I dont know, how much of the features of this chip are >> build into the driver! Means: May be you will need to hack the kernel >> driver a little or a little more... ;) But as there is a driver >> already there this will not be THAT complicated. >> To get the cape running with the BBB is a little tricky (driver >> selection in the kernel (you use Robert Nelsons fantastic kernel?)) >> and you need to disable HDMI and eMMC as far as I know. >> But it will definetly run with the BBB after some tweaking (or in >> other words: I have a BBB and an AUDIO cape and a LCD7 cape (A2) >> running together nicely after some hacking of the device tree). >> >> HTH! >> Best regards, >> mcc >> >> >> >> Priyank Patel <[email protected]> [13-10-01 05:12]: >> > Thanks for the quick reply. I will be sure to get the audio cape. After >> > getting the audio cape, I suppose, I need to capture the mic input and >> > sample it (I think ALSA does that?). Further, I will need to implement >> DSP >> > algorithms. I researched on that and found the OMAP built into the >> > beagleboard (Here I refer to the original beagleboard) has the ability >> to >> > do DSP functions via Gstreamer tweaking (gst-dsp project). I am >> wondering >> > if there is similar OMAP processor built into beaglebone black (which I >> am >> > using for my project). Please, let me know how-to deploy dsp function on >> > BBLK. Thanks. :) >> > Priyank. >> > >> > On Monday, September 30, 2013 10:53:17 PM UTC-4, [email protected]: >> > > >> > > Hi Priyank, >> > > >> > > two things to consider: >> > > For me "hearing aid" implies to increase the volume of a audio >> > > signal. But you cannot process signals, which do not arrive at the >> > > A/D-converter. >> > > The cheap USB-Audio-Dongles have a no stereo mic inout. It is only >> > > mono (or in other words: All USB-dongles I looked for, have a mono >> > > input...I didnt find any dongle with a stereo input). A hearing >> > > aid which feeds the same signal to both ears (mono) will destroy >> > > the human ability to locate sounds. While crossing over roads (for >> > > example) >> > > without being able to locate a sound could be fatal... ;) >> > > Furthermore it may be possible, that the input amplifier of such >> > > dongles isn't powerful enough to amplify a mic's signal. May be the >> > > advertising of such dongles confuses "Line In" with "Mic In" for >> > > obvious reasons. >> > > >> > > >> > > Best regards, >> > > mcc >> > > >> > > >> > > >> > > Priyank Patel <[email protected] <javascript:>> [13-10-01 03:59]: >> > > > Hello, >> > > > I was researching within the thread and found out that a USB audio >> > > dongle >> > > > might be a cheap alternative to buying a Audio cape. I just wanted >> to >> > > know >> > > > if it would work for my hearing aid application (i.e. to send an >> input >> > > to >> > > > beaglebone black and receiving it back via the same USB audio >> dongle) >> > > > p.s. I am not looking to get a very high quality sound, just need to >> > > make >> > > > it work. >> > > > Thanks in advance. >> > > > Priyank. >> > > > >> > > > On Monday, September 30, 2013 4:48:56 AM UTC-4, lisarden wrote: >> > > > > >> > > > > probably you should have a look at arecord sources to figure out >> how >> > > to >> > > > > capture samples from a sound card >> > > > > >> > > > > >> > > > > 2013/9/30 Priyank Patel <[email protected] <javascript:>> >> > > > > >> > > > >> Thanks for the suggestion. >> > > > >> Now as I stated earlier I m a beginner, I don't know where to >> start >> > > with >> > > > >> programming. I refer to the part where I need to sample the data >> > > coming >> > > > >> from a microphone and implement dsp algorithms. Please point me >> in >> > > right >> > > > >> direction or some references. Thanks again. >> > > > >> On Sep 30, 2013 3:43 AM, "Maxim Podbereznyy" <[email protected] >> <javascript:>> >> > > >> > > > >> wrote: >> > > > >> >> > > > >>> yes. It was discussed here already >> > > > >>> >> > > > >>> >> > > > >>> 2013/9/30 Priyank Patel <[email protected] <javascript:>> >> > > > >>> >> > > > >>>> Is audio cape compatible with BBLK. I think I need to disable >> the >> > > hdmi >> > > > >>>> functionality in order to use the audio cape. >> > > > >>>> >> > > > >>>> -- >> > > > >>>> 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/groups/opt_out. >> > > > >>>> >> > > > >>> >> > > > >>> >> > > > >>> >> > > > >>> -- >> > > > >>> LinkedIn - http://www.linkedin.com/in/maximpodbereznyy >> > > > >>> Company - http://www.linkedin.com/company/mentorel >> > > > >>> Facebook - https://www.facebook.com/mentorel.company >> > > > >>> >> > > > >>> -- >> > > > >>> 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/spmJODUYSp0/unsubscribe >> . >> > > > >>> To unsubscribe from this group and all its topics, send an >> email to >> > > > >>> [email protected] <javascript:>. >> > > > >>> >> > > > >>> For more options, visit >> https://groups.google.com/groups/opt_out. >> > > > >>> >> > > > >> -- >> > > > >> 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/groups/opt_out >> . >> > > > >> >> > > > > >> > > > > >> > > > > >> > > > > -- >> > > > > LinkedIn - http://www.linkedin.com/in/maximpodbereznyy >> > > > > Company - http://www.linkedin.com/company/mentorel >> > > > > Facebook - https://www.facebook.com/mentorel.company >> > > > > >> > > > >> > > > -- >> > > > 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/groups/opt_out. >> > > >> > > >> > >> > -- >> > 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/groups/opt_out. >> >> -- >> 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/groups/opt_out. >> > > -- > 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/spmJODUYSp0/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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