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] wrote: > > 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.
