It sounds as if channel faders are (ducking) eachother..why

Share your favorite Ableton Live tips, tricks, and techniques.
laird
Posts: 1996
Joined: Tue Feb 27, 2007 10:05 pm
Location: PDX
Contact:

Post by laird » Wed Feb 13, 2008 5:26 pm

PS,
I am in hippy central, aka SE Portland.

friend_kami
Posts: 2255
Joined: Mon May 29, 2006 10:10 pm

Post by friend_kami » Wed Feb 13, 2008 11:19 pm

for me this happens alot with lower frequencies even though nothing is running on the red. i know its not my soundcard because its fine using other DAW solutions. its not my speakers either, because again what i said about other DAWs. infact it happens rarely and usually its not so much noticable, but it does happen and its quite annoying to have a slight ducking effect on something you dont want to duck.

like i said, all the faders etc are usually fine. pseudoducking if you wish heh, possibly because of headroom. limited to live only O.o

no idea. interesting though.

l7 btw.

shmaltz
Posts: 20
Joined: Mon Aug 22, 2005 4:47 am
Location: Melbourne Australia
Contact:

ducking effect = phase cancellation?

Post by shmaltz » Thu Feb 14, 2008 5:26 am

Hi,

Have you considered phase cancellation? This occurs when two sounds are playing in an overlapping frequency range – a negative phase in one channel can cancel the positive phase in the other channel to produce reduced/zero amplitude for that frequency band. You could get around it by cutting the overlapping frequency. That is, solo track A and B together (or whatever combination of channels is causing the ducking - find the combination by systematically playing various combinations of tracks), put EQ eight on one of the problem channels, select the third or fourth filter type switch (bell or notch), deactivate 7/8 filters (so one is left on), increase Q to 18, "scroll" slowly through the frequencies with the freq knob until the ducking (phase cancellation) stops. You might need to notch many frequencies on many tracks in your song. This method is also known as subtractive EQ, so just google "subtractive EQ" to learn more.

Hope that solves it,

:arrow:
run amok

poops
Posts: 34
Joined: Fri Jul 14, 2006 4:34 am

Post by poops » Thu Feb 14, 2008 6:33 am

8O

poops
Posts: 34
Joined: Fri Jul 14, 2006 4:34 am

Post by poops » Thu Feb 14, 2008 6:39 am

laird wrote:What version of Live are we discussing here?
What I am working with is 5

poops
Posts: 34
Joined: Fri Jul 14, 2006 4:34 am

Re: ducking effect = phase cancellation?

Post by poops » Thu Feb 14, 2008 6:44 am

shmaltz wrote:Hi,

Have you considered phase cancellation? This occurs when two sounds are playing in an overlapping frequency range – a negative phase in one channel can cancel the positive phase in the other channel to produce reduced/zero amplitude for that frequency band. You could get around it by cutting the overlapping frequency. That is, solo track A and B together (or whatever combination of channels is causing the ducking - find the combination by systematically playing various combinations of tracks), put EQ eight on one of the problem channels, select the third or fourth filter type switch (bell or notch), deactivate 7/8 filters (so one is left on), increase Q to 18, "scroll" slowly through the frequencies with the freq knob until the ducking (phase cancellation) stops. You might need to notch many frequencies on many tracks in your song. This method is also known as subtractive EQ, so just google "subtractive EQ" to learn more.



Hope that solves it,

:arrow:
I'm postive it's not phase cancellation. :) Thank you for the reply!
I'm gonna get to the bottom of this (I hope) when I visit my buddie's studio in a few weeks. He is also still using LIve 5. But, he does use an external sound card instead of the built in card, and he uses some awesome powered KRks.
And, If I don't hear "it" there, that will be enough to get me to do some upgrading. :)

"Built In" Sound Card on my Imac is a Burr Brown PCM3052 24/96.

bentti2000
Posts: 17
Joined: Mon Jan 21, 2008 4:56 pm

reply

Post by bentti2000 » Thu Feb 14, 2008 12:19 pm

im using ableton 7 m8 and i cant solve the problem its even happening when i burn the song to a cd if u find anything that helps will you let me know thanx m8 :lol:

friend_kami
Posts: 2255
Joined: Mon May 29, 2006 10:10 pm

Post by friend_kami » Thu Feb 14, 2008 3:07 pm

not phase cancellation here either.
still happening, and still annoys me.

shmaltz
Posts: 20
Joined: Mon Aug 22, 2005 4:47 am
Location: Melbourne Australia
Contact:

ducking = not phase cancellation

Post by shmaltz » Fri Feb 15, 2008 1:46 am

:oops: oh well, it was a worth a mention... good luck with it. :arrow:
run amok

Post Reply