Sigma Studio - Dynamics and time constants (ms vs dB/s)

BlackBeauty

on Apr 11, 2016

I am developing an app using ADAU1452 and Sigma Studio. I am using a Compressor block (for rms and peak compression/limiting).

I have seen time constants are in "dB/s", but i would like to work with "ms" (that I think is a more unsderstandable term by most users).

I have also seen that the module changes its units from dB/s to ms by cliking the time constant label, is it the real conversion?. Also I think the dsp always has to receive this parameter in dB/s units, isn't it?

I would like to know if there is a formula to convert from ms to dB/s,

And also if the module can receive parameters straight in ms instead of dB/s.

Regards

Carlos

KJBob

on Apr 12, 2016 12:26 AM
0
     Hello Carlos,

     You'll find the conversion formula along with its derivation at:

Compresser RMS TC from dbpersecond to attack time(ms)

(scroll down to the fourth post in this thread, by Brett G.)

     The formula for converting either way from Time constant in mS to dB/S simplifies to:

T = 8685 / (dB/S)

and,

(dB/S) = 8685 / T

     Yes, the module returns numbers consistent with this conversion formula -- thus it's a true conversion.

     Best regards,

     Bob
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Sigma Studio - Dynamics and time constants (ms vs dB/s)