Hi Meino, I have looked up both directional and unidirectional adafruit has to offer. The unidirectional microphone seems to be partially helping as the website says it is ideal for the distance of 6" from the sound source (this is hearing aid and the sound source can be far or near) .Besides that, other concern is how would I interface it with the Audio cape (If I purchased one). This query was produced as I do not see a mic-in audio jack. Please, suggest me what can be steps that can be taken further. Thanks for researching on my behalf. You guys are helping a lot. Much obliged. Priyank.
On Tue, Oct 1, 2013 at 12:15 AM, <[email protected]> wrote: > 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 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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