Linear Phase and Minimum Phase switch?

[Cojo]

Hi.

I'm just trying out the UAD-1 Precision Multiband Compressor and I've have a question regarding the Linear Phase and Minimum Phase switch. I've read the manual but it doesn't say much.

Can anyone please explain what the differences are between the two? There is huge different in sound, especially the kick gets much more punch when it is in minimum phase.

(Sorry if I posted this in the wrong forum. Moderators feel free to move if I've done wrong.)

Thanks!

/Cojo

[dcollins]

Originally Posted by Cojo

Hi.

I'm just trying out the UAD-1 Precision Multiband Compressor and I've have a question regarding the Linear Phase and Minimum Phase switch. I've read the manual but it doesn't say much.

Minimum-phase means that there is phase shift (like analogue eq's) and linear-phase means that there is no phase shift.

DC

[Cojo]

Originally Posted by dcollins

Minimum-phase means that there is phase shift (like analogue eq's) and linear-phase means that there is no phase shift.

DC

Hmm... sorry if I'm repeating myself, just trying to understand. The sound change when I press the switch even if I don't have boost or cut anything? How and why?

Thanks for helping me out here!

/Cojo

[bob katz]

Originally Posted by Cojo

Hmm... sorry if I'm repeating myself, just trying to understand. The sound change when I press the switch even if I don't have boost or cut anything? How and why?

Thanks for helping me out here!

/Cojo

If there are more than one band in the compressor, then the transition between bands is handled differently, the filter slopes, and that may sound different. You also have to consider the slope, is it 6 dB or greater? A 6 dB slope between compressor bands may sound "sweeter" than a higher slope, whether it's minimum or linear phase.

BK

[Cojo]

Originally Posted by bob katz

If there are more than one band in the compressor, then the transition between bands is handled differently, the filter slopes, and that may sound different. You also have to consider the slope, is it 6 dB or greater? A 6 dB slope between compressor bands may sound "sweeter" than a higher slope, whether it's minimum or linear phase.

BK

Thanks for your reply.

It doesn't say what slope it is. But by looking at the graph it looks like it's 12dB. Also, the change in sound seems to affect the low freq more then the high!?

/Cojo

[bob katz]

Originally Posted by Cojo

Thanks for your reply.

It doesn't say what slope it is. But by looking at the graph it looks like it's 12dB. Also, the change in sound seems to affect the low freq more then the high!?

/Cojo

I've forgotten what aspect of poorly-done linear phase calculations produces negative sound quality. I think it's pass-band ripple due to insufficient number of taps. In general, linear phase equalizers tend to show their weaknesses first at the low frequency end. Anyway, you may pick one mode or another depending on what sounds best for the job.

[Cojo]

Originally Posted by bob katz

I've forgotten what aspect of poorly-done linear phase calculations produces negative sound quality. I think it's pass-band ripple due to insufficient number of taps. In general, linear phase equalizers tend to show their weaknesses first at the low frequency end. Anyway, you may pick one mode or another depending on what sounds best for the job.

Ok, thanks!

/Cojo