KVR Audio

popsych · Post by **popsych** » Mon Jul 25, 2005 4:48 pm

I'm currently doing my homework as to which multiband compressor i should buy and seeing a tutorial on Waves LinMB (which i can't afford - i think

) got me thinking : Is using linear phase filters in such a plugin an absolute necesity ? What does soniformer use (i think it's not phase linear) and what are the benefits of each. I realise when i would use linear phase or a normal "phasy" eq but in my mind a multiband compressor should always be linear phase right ? Explain please.

Johnny Cherry · Post by **Johnny Cherry** » Tue Jul 26, 2005 10:26 am

Where was the tutorial on the LinMB?

Sorry can't help you.

duncanparsons · Post by **duncanparsons** » Tue Jul 26, 2005 11:14 am

for a cheaper alternative, you could try http://www.kvraudio.com/get/950.html

:)

HTH
DSP

popsych · Post by **popsych** » Wed Jul 27, 2005 4:44 am

duncanparsons wrote:for a cheaper alternative, you could try http://www.kvraudio.com/get/950.html

HTH
DSP

Thanks. Will try it out. My question though is general. I see that this does have Linear Phase FIR and i think these should be a necesity for all multiband compressors. Am i wrong; and if so why ?

Henke · Post by **Henke** » Wed Jul 27, 2005 6:03 am

The advantage of using linear phase filters is that when you sum the bands, you won't have problems with cancellations in the frequency spectrum, caused by the nonlinear phase shift along the spectrum that a nonlinear phase filter would introduce.

jens · Post by **jens** » Wed Jul 27, 2005 6:09 am

http://www.ismusic.ne.jp/sweetboy/T-SLEDGE/

duncanparsons · Post by **duncanparsons** » Wed Jul 27, 2005 6:26 am

jens, I completely agree. T-SLEDGE is the dB when it comes to freeware multibands (even some commercial), but is it linear phase? I've never been sure, but always been pleased enough with the results that I don't care!

:)

DSP

duncanparsons · Post by **duncanparsons** » Wed Jul 27, 2005 6:34 am

Dang, just read the page - it's switchable isn't it! Dang, that's good!

DSP

pitchdrifter · Post by **pitchdrifter** » Wed Jul 27, 2005 6:37 am

http://www.x-buz.com - Buzcomp Free contains GeneComp 3, subtitled 'Multiband Generic Digital Linear Compressor'. The commercial product (bundle) on their site (Buzcomp 3) has a range of linear phase plugins as well. Difference between both appears to be flexible crossovers on the commercial product, fixed on the free version.
I never used these, they popped up on google (looking for a sanely priced alternative to waves C3 and linmb myself at the moment).

loophead · Post by **loophead** » Wed Jul 27, 2005 6:51 am

Henke wrote:The advantage of using linear phase filters is that when you sum the bands, you won't have problems with cancellations in the frequency spectrum, caused by the nonlinear phase shift along the spectrum that a nonlinear phase filter would introduce.

Only if it is done correctly...many 'linear phase' plugins will smear your transients (weird as that was what one is hoping to avoid) so listen before you pay.

Also note possible latencies which may or may not matter to what you are doing.

jens · Post by **jens** » Wed Jul 27, 2005 7:01 am

duncanparsons wrote:Dang, just read the page - it's switchable isn't it! Dang, that's good!

DSP

yes, you can switch it to FIR...

Henke · Post by **Henke** » Wed Jul 27, 2005 7:37 am

loophead wrote:
Henke wrote:The advantage of using linear phase filters is that when you sum the bands, you won't have problems with cancellations in the frequency spectrum, caused by the nonlinear phase shift along the spectrum that a nonlinear phase filter would introduce.
Only if it is done correctly...

Yes, of course.

Linear phase for multiband ?