AnsweredAssumed Answered

[ADSP-21489] If FIR coefficients are over 20,000, noise occur in sigma studio.

Question asked by Hur on Jul 23, 2017

Hello. 

 

I used an adsp-21489 ez-kit lite evaluation board to develop algorithm.

 

However, I got an problem to use sigma studio for shark. 

 

In sigma studio, when total number of FIR filter's coefficient is over about 17,000 

(In below fig., total number of FIR filter's coefficient is 20,000)

, noise is heard in output signal.

 why is noise added to output signal when total number of FIR filter's coefficient is over about 17,000?

 

Thank you very much,

 

Hur.

 

Outcomes