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TI Home » TI E2E Community » Support Forums » Data Converters » Audio Converters » Audio Converters Forum » TLV320AIC3204 audio codec and TPA3007D1 audio power amplifier
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TLV320AIC3204 audio codec and TPA3007D1 audio power amplifier

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Gajanan Choukidar
Posted by Gajanan Choukidar
on Mar 09 2012 01:48 AM
Intellectual310 points
Can I connect codec TLV320AIC3204 with TPA3007D1 for transmitting audio signal at a distance of 100 meter.If yes what can be done for conneting mic at the same distance with TLV320AIC3204. Thanks in advance.
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  • Don Dapkus
    Posted by Don Dapkus
    on Mar 12 2012 10:26 AM
    Guru101995 points

    Hi, Gajanan,

    You want to put the TLV320AIC3204 and TPA3007D1 in a box, and have a cable run 100 m to a second box containing the speaker and the mic?

    Is my understanding correct?

    -d2

    -----

    Don Dapkus

    Audio Applications Engineering Manager

    Dallas, TX USA

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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 13 2012 04:29 AM
    Verified Answer
    Verified by Gajanan Choukidar
    Intellectual310 points
    Yes you are correct. Also please tell me if I have power cable for 12 V dc to second box which is carried through same 8 core cable to second box, what precaution should I take to reduce noise from system? Thanks in advance.
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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 14 2012 09:07 AM
    Intellectual310 points
    I am waiting for your reply Don.
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  • Don Dapkus
    Posted by Don Dapkus
    on Mar 14 2012 22:05 PM
    Guru101995 points

    Hi, Gajanan,

    Sorry, this is a somewhat unusual application, so I'm afraid I won't be able to offer you any concrete recommendations.

    I think one thing you can be sure of is you need to put a mic pre-amp at the box end, and even then, your mic signal is probably going to be corrupted by the noise on the speaker wires from the class-D amp.

    You will need some serious filtering and isolatino in your system...

    -d2

    -----

    Don Dapkus

    Audio Applications Engineering Manager

    Dallas, TX USA

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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 15 2012 01:17 AM
    Intellectual310 points
    Thanks Don. yes I put pre-amplifier at the box end and I am able to listen at other end what I am speaking at the box end with background noise. Please tell me solution to supress this background noise. I will get clear voice if I am able to supress this noise.Can I do it by setting some filter values in TLV320AIC3204. Also with TPA3007D1 I am getting clear voice with 8 ohm speaker at box end from other end. Only needs some efficient filtering to supress background noise. Please help me to have solution for this. Waiting for your valuable reply.
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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 19 2012 01:25 AM
    Intellectual310 points
    Waiting for your suggestions. Regards, Gajanan.
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  • Don Dapkus
    Posted by Don Dapkus
    on Mar 19 2012 15:34 PM
    Guru101995 points

    Gajanan,

    Noise is a little tricky... You can try better shielded wires, RC filtering on the cable, DSP filtering, etc, etc.

    It's very system-dependent, so you're going to have to test different things on your system to see which is most effective for you.

    -d2

    -----

    Don Dapkus

    Audio Applications Engineering Manager

    Dallas, TX USA

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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 26 2012 09:33 AM
    Intellectual310 points
    with your suggestion of use of shielded wires and RC filters, noise is reduced almost to zero from system. Now only problem in current system is I am getting echo in the speaker. whatever I spoke through MIC from one end is audio-able at other end(100 m) as well as at same end where MIC is connected. Please help me to sort out this problem. Thank you very much...........
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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 28 2012 01:04 AM
    Intellectual310 points
    Dear Don Please help me to sort above mentioned problem...... Waiting for ur reply...........
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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Mar 30 2012 02:07 AM
    Intellectual310 points
    will impedance matching resolve echo problem from any system that contains mic and speaker?
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  • Gajanan Choukidar
    Posted by Gajanan Choukidar
    on Apr 02 2012 04:38 AM
    Suggested Answer
    Intellectual310 points
    waiting for reply.
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