• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 30 subscribers
  • Views 179 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

Original question:

TAS6424E-Q1: TAS6424E-Q1

TAS6424E-Q1: The THD+N or THD algorithm

Hsinhung KUO
Prodigy 20 points
Part Number: TAS6424E-Q1
Other Parts Discussed in Thread: TAS6424

Hi TI Team

May I ask how to calculate the TAS6424 or TAS6584 for the THD+N or THD algorithm? 

  • 0
    TI__Mastermind 35965 points

    Hsinhung,

    THD is not calculated but measured with audio test equipment.

    Regards,
    Gregg Scott

  • 0 in reply to Gregg Scott
    Prodigy 20 points

    Hi Gregg

    Below is our structure, We design this for measured the total power from AMP and want to know the total hormonic value(R-load is 4Ω), I'ii provide THD algorithm to our SW team, So I need to know how to calculated it, could you have any suggestion? 

  • 0 in reply to Hsinhung KUO
    TI__Mastermind 35965 points

    Hsinhung,

    This request is outside the use of our amplifiers, because we measure the THD with calibrated test equipment. 

    I performed a quick search and found that Matlab has a function to calculate the THD.  I see there is a thd() function inside the signal processing library. If you do not have access to Matlab, I suggest you perform more searches online to see how to do it in the digital domain.  

    Regards,
    Gregg Scott