SRC4193: LGRP Function

Sadanori Kato

Part Number: SRC4193

Hi,

Could you please let me know if there are any disadvantages when LGRP is set to "1" (low group delay)?
For example, SNR, distortion, sound quality, etc.

Best regards,
Kato

10 months ago

+1 Arash Loloee 10 months ago

TI__Mastermind 22000 points

Hello Kato,

By definition Group delay of filter is a measure of phase distortion. Group delay is the actual transit time of a signal through a device under test as a function of frequency and causes amplitude distortion. The below link is a good reference to understand and visualize the effect of group delay on signals and how it changes them.

https://circuitcellar.com/research-design-hub/group-delay-basics-more-filter-fun/

Having said that, data sheets for audio range devices usually don't have different values for THD, DR and ... based on selected group delay.

Regards,

Arash

0 Sadanori Kato 10 months ago in reply to Arash Loloee

Guru 36510 points

Hi Arash-san,

Thank you for your prompt reply.

I understand.

Best regards,
Kato

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SRC4193: LGRP Function