PUREPATHCONSOLE: PPC3 v3.0.8

Jukka Nousiainen1

Part Number: PUREPATHCONSOLE
Other Parts Discussed in Thread: TAS2557EVM

I have one problem with TAS2557EVM and PPC3 v3.0.8.

I have made EQ-tuning and I'm tryin to do DRC tunings. I feed very low level Pink noise signal from pc via USB to the EVM board. First I have only EQ ON and DRC Off. Frequency responce is as it should be. Then I put DRC ON with compressions are 1:1 in all bands (700Hz, 700z to 6000Hz and 6000 Hz). DRC should not be affected at all. BUT frequncy responce is attenuated at higher end.

DRC OFF:

DRC ON:

Here are DRC settings:

What can cause this kind of effect?

over 5 years ago

0 Jukka Nousiainen1 over 5 years ago

Prodigy 80 points

Sorry. Here are DRC settings:

0 Luis Fernando Rodriguez S. over 5 years ago in reply to Jukka Nousiainen1

TI__Guru* 84915 points

Hi, Jukka,

Our team will take a look at this and will answer as soon as possible.

Best regards,
Luis Fernando Rodríguez S.

0 Ivan Salazar over 5 years ago in reply to Jukka Nousiainen1

TI__Guru** 111115 points

Hi Jukka,

As you can see int he frequency response plot, the Linkwitz Riley filters have a roll-off at high frequencies (and also a slower one on the low frequencies) that is most likely causing your observed response.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 Jukka Nousiainen1 over 5 years ago in reply to Ivan Salazar

Prodigy 80 points

Thanks

What might be flattest crossover filter, Bessel, Butterworh, Cheyshev ect.?

Br. Jukka

Audio

Audio forum

PUREPATHCONSOLE: PPC3 v3.0.8