Hi Priyank, hope that this could be helpful?!: http://www.adafruit.com/products/1063
??? Best regards, mcc Priyank Patel <[email protected]> [13-10-01 06:00]: > Hi Pedro, > I reviewed the Audio Cape IC specification file. The IC does have powerful > ADC and DAC along with support for features that I require for the project. > Here, I posted a snapshot of what I found related to the topic being > discussed. Full version is available at: www.ti.com/lit/ds/symlink/* > tlv320aic3106*.pdf > I do not understand some of the highlighted portion. Please, see if its the > same what you mentioned in your earlier reply. > Thanks. > Priyank. > On Monday, September 30, 2013 11:40:32 PM UTC-4, Peedro A. Melendez > (lazychino) wrote: > > > > the audio cape IC is really powerful but note some functions are > > restricted by the hardware, example no microphone support(mic bias no > > connected). Check the audio cape files to make sure it works for your > > application. > > -Pedro > > > > > > On Mon, Sep 30, 2013 at 11:36 PM, Pedro A. Melendez > > <[email protected]<javascript:> > > > 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] <javascript:>> 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] <javascript:>> [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] <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. > >>> > >> > >> > > > > -- > 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. 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