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DSP based audio mixer and dsp based audio equalizer

ArTzy
Genius 17425 points
Other Parts Discussed in Thread: PCM5310, TLV320AIC3262

Hi Experts,

Good day. Seeking advise on this queryL

I have work to complete on dsp based audio mixer and the dsp based audio equalizer. So I am searching for the sample diagram to implement both of those devices from TI plus what development tools that goes with it.

What information you need extra on both of my requirement above? I hope you can assist in suggesting me the right dsp chip (if possible) that can handle both the audio mixer and the audio equalizer as well

2 products using the same dsp chip ... that is what I meant

To be detailed:
I am hoping to get the evalution circuit diagram from TI on implementing the dsp based audio mixer which takes about analog line signal (6 stereo input) by at least 1 stereo line level output. The audio equalizer takes at least 1 stereo analog audio in (line level) and give out 1 stereo analog audio before it goes into the D-class amplifier. I need the dsp chip as well as the dev tools like the IDE and the programming cable/ICE
Cool if the dsp can do both jobs so I can learn and hit both with single learning path. The products suppose to go into classrooms in universities
Pure Path Studio seems cool

Thank you.

Regards,
Archie A.

  • TI__Mastermind 46185 points

    Hi Archie,

    To clarify your requirements, it sounds like you need a codec that can receive 6 analog inputs and output at least 1 analog output that can be tapped before the Class D amp? It also needs a DSP onboard that can perform mixing and equalization?

    Thank you,

    Jeff

  • in reply to Jeff McPherson
    TI__Genius 17425 points

    Hello Jeff,

    Thank you.

    What my Cx is looking for is to have 2 devices both with DSP chip on it - (See shared PDF below).

    The first is the audio mixer having about 6 stereo audio in (line level) and at minimum 1 stereo audio out (line level). The second device is the 31 band audio equalizer with 1 stereo audio in and 1 stereo audio out. Please refer to the attachment. For the time being, you just leave the audio video matrix switcher and the class D aside (not for now). Hoping to have the SAME dsp chip part number that can handle both tasks and also need the development tools (IDE and programmer cable like ICE, etc) as part of the circuit diagram on each of the system.

    Regards,
    Archie A.

    earnestcom-device-connectivity.pdf
    The 2 boxes in the middle is priority now for the designer.

  • in reply to ArTzy
    TI__Mastermind 46185 points

    Hi Archie,

    6 stereo inputs is a lot. The only part I can find that supports that is the PCM5310. This part does not have any DSP capabilities however. The TLV320AIC3262 has a miniDSP that is configured with PurePath studio, a graphic design environment, and can perform equalization. You can find PurePath Studio downloads on the 3262 product page. The 3262 also has Class D speakers. 

    Those two parts are probably best based on what you've shared. Unfortunately I don't think we can accommodate those requirements on one chip. 

    Best regards,

    Jeff

  • in reply to Jeff McPherson
    TI__Genius 17425 points

    Hello Jeff,

    Thanks for the info, refer to response from Cx.

    I am still not going thru the datasheet of both ics you proposed. However, I am designing a more universal products which takes line level inputs and output the processed line level audio for the next stage equipment. Early comment, the Class D built in TLV320AIC3262 certainly not a suitable candidate for my work unless it also offers line level audio output .... the feature that I need to verify from its datasheet. I have worked with microcontroller systems and digital system for quite some times, this is the first time I am trying the development using analog chipset and dsp processor. Hope if TI has any document about inter-connecting various analog chipsets into becoming a system (eg audio mixer or audio equalizer) that will be much help to me - thanks, will get back to you later.

    Regards,
    Archie A.