Linkwitz Crossfeed preset

[Juha]

Another crossfeed preset. This one is based on Linkwitz paper and is intended for Headphone use.

Dunno if this works properly for everyone without some tweaking. Tweaking can be done through changing values for
- fc (try values between 700 - 2000 ) (as like "Meiers extended version")
- adjust Preamp for L2 R2 channels (separation between direct and crossfeed channels)
- add some Delay for the other channels (add command Delay: <n> ms or <n> samples for channels you want to delay) . If the crossfeed delay is too long then delay the direct channels a bit and vice versa.

There are two versions of preset attached; the MZT version just uses magnitude matched low passs filter for the crossfeed channels. Not much difference between these two versions:

(BLT is the method for RBJ )

[Juha]

Here's one polynomial approximation (which may be lighter for CPU).

[Matt Gore]

Hi, I also made one:

Eval: freq=700
Copy: LX=L RX=R
Channel: L R
Filter: ON HS Fc `freq` Hz Gain 2 dB
Channel: LX RX
Preamp: -33 dB
Filter: ON LS 6 dB Fc `freq` Hz Gain 30 dB
Delay: 0 samples
Copy: L=L+RX R=R+LX

All five numbers can be adjusted for personal preferences.

[Juha]

Hmm... might work for someone but, is that a Linkwitz one (as this thread was opened for)?

[Matt Gore]

Well, if you change the frequency or the preamp like you told in your initial post then you also won't have Linkwitz anymore. But you are right, I should have used the original values (I fixed that now).

[Sourceforge Sucks]

Thanks a lot! I liked how Linkwitz_Crossfeed_RBJ.txt sounds with headphones.