• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 330 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TAS5825M: In-system bass and treble adjustments?

Chris Suchoski
Prodigy 200 points
Part Number: TAS5825M

Hi Team,

Is it possible to perform in-system bass and treble adjustments with the TAS5825M without the use of an external processor/DSP to perform pre-processing? For example, if I wanted to increase the bass using a push-button on a speaker using this device, how could I go about re-configuring the device to reflect the new desired bass profile without reprogramming all DSP coefficients?

Thanks!

Chris

  • 0
    TI__Mastermind 22172 points

    Hey Chris, 

    In system bass and treble adjustments can be done via the Base/Pro (2.0 48k) process flow.
    Once the tuning is done to the application needs, it can be integrated into the end system.

    If you would to change something after the device has been programmed and the tuning has been implemented, for example with a push button, an external processor will have to be used to:
    1. Read the incoming signal from the push button
    2. Program the change to the TAS5825M with I2C

    So to answer your question, what you are trying to accomplish would require an external processor. 

    All the best,
    Carolina 

  • 0 in reply to Caro Walter
    TI__Prodigy 200 points

    Hi Carolina,

    Thanks for the feedback!

    Apologies if I was unclear but by "processor/DSP" I was referring to a more powerful device apart from the host microcontroller. But it sounds like we would just need to reprogram the TAS5825M registers via I2C using the existing host, right? We wouldn't need to rewrite all of the DSP coefficients though, would we? Can you comment on what changes would have to be made? I don't think that there is sufficient flash available to store another C-array with all register contents.

    Chris

  • 0 in reply to Chris Suchoski
    TI__Mastermind 22172 points

    Hey Chris, 

    It really depends on what you would like to change. To get a better idea within the PPC3 GUI you may log the I2C changes done in the I2C log at the bottom of the screen. 

    For example: Changing the bass compensation corner frequency from 100 Hz to 125.76 Hz 

    All the best,
    Carolina