Emu XL-7 & MP-7 User's Group

I have uploaded an *.asf file temporarily to demonstrate a problem 
of popping sounds I ran across with a preset using the EarlyRizer 
filter.  On another board, another user was also having a problem 
with a preset (Vintage ROM) that used this filter.  I am not sure if 
others faced this problem, but here's a solution I found (in case it 
helps others).

I isolated the offending layer by turning off layers in the 
offending preset.  After testing scores of possibilities, I found a 
layer level patchcord as follows:

MidiE --> VEnvAtk  -60

By increasing MidiE (thereby decreasing the VEnvAtk), I got rid of 
the popping.  If you listen to the EarlyRizer.asf file, you will 
notice it goes away after about 20-25 seconds.  Yes, it changes the 
sound slighly, but its better than the popping and still retains 
much of the filter characteristics.

Sorry its an asf file; my mp3 program isn't working. Also, since the 
file takes up a large chunck of space, I will be removing it 
shortly.  If you faced this problem and found other solutions, I'd 
be interested in them.  Thanks.

--Steve

Congratulations, you found the culprit of the problem (i.e the filter)
much quicker than people have in the past.  We had a relatively long
discussion on preset pops that took quite a while to track down in the
past.

An alternate solution (which may or may not change the sound less) is
to turn down Q ever so slightly.  Same deal.  The filter has a lot of
resonance that when combined with certain sounds, clips the filter.  As
a side note, you'll notice that most filters have their max Q set at 80
instead of 100.  At your own risk, you can turn them up... =)

-Aaron

--- steve_the_composer <smw-mail@...> wrote:

> I have uploaded an *.asf file temporarily to demonstrate a problem 
> of popping sounds I ran across with a preset using the EarlyRizer 
> filter.  On another board, another user was also having a problem 
> with a preset (Vintage ROM) that used this filter.  I am not sure if 
> others faced this problem, but here's a solution I found (in case it 
> helps others).
> 
> I isolated the offending layer by turning off layers in the 
> offending preset.  After testing scores of possibilities, I found a 
> layer level patchcord as follows:
> 
> MidiE --> VEnvAtk  -60
> 
> By increasing MidiE (thereby decreasing the VEnvAtk), I got rid of 
> the popping.  If you listen to the EarlyRizer.asf file, you will 
> notice it goes away after about 20-25 seconds.  Yes, it changes the 
> sound slighly, but its better than the popping and still retains 
> much of the filter characteristics.
> 
> Sorry its an asf file; my mp3 program isn't working. Also, since the 
> file takes up a large chunck of space, I will be removing it 
> shortly.  If you faced this problem and found other solutions, I'd 
> be interested in them.  Thanks.
> 
> --Steve


		
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Thanks for the reminder.  I remember the discussion here and your 
previous advice about Q.  In fact, before I ran into the problem 
myself I suggested to the other user adjusting the filter 
parameters.  In my case, the offending preset [P2500: pad:Richness] 
had Q=0 on both layers.

With EarlyRizer, it almost seems like the filter starts rising 
before the sample is completely out of the gate!! :-)

I ended up tweaking VEnv Attack1 Rate on both layers.  This let me 
have the least change on each layer (from 0 to 2 on one layer; from 
0 to 7 or 8 on the other layer).  Since its a pad, the miniscule 
attack change is hardly noticeable.

As for high Q's, I have an ART X-15 controller with 2 pedals.  99 
44/100% of the time, I have them controlling cutoff and resonance.  
Noodling with my midi sax, I play the cuttoff pedal, esp. with delay 
or pan delay effects.  But I almost always have Q backed off from 
max.  Its definitely too intense, but nice to know its there if I 
need it.  Occasionally, I momentarily push the Q to the floor.

--Steve


--- In xl7@yahoogroups.com, Aaron Eppolito <synthesis77@y...> wrote:
> Congratulations, you found the culprit of the problem (i.e the 
filter)
> much quicker than people have in the past.  We had a relatively 
long
> discussion on preset pops that took quite a while to track down in 
the
> past.
> 
> An alternate solution (which may or may not change the sound less) 
is
> to turn down Q ever so slightly.  Same deal.  The filter has a lot 
of
> resonance that when combined with certain sounds, clips the 
filter.  As
> a side note, you'll notice that most filters have their max Q set 
at 80

> instead of 100.  At your own risk, you can turn them up... =)
> 
> -Aaron

Tried listening to it, but Ithink you recorded it too hot, there's 
clipping all over it!  :)

rEalm
(yes, that was a joke)





steve_the_composer <smw-mail@...>
08/26/2004 09:57 AM
Please respond to xl7

 
        To:     xl7@yahoogroups.com
        cc: 

        Subject:        [xl7] Re: Early Rizer Filter Problem


Thanks to everyone who listened to the file I posted and to those who 
posted comments on this issue.  Since the asf.file (335k) takes up 
most of the file space that was left before I posted the file, I will 
be deleting the file either this evening or in the early morning 
hours.

SO:

If you want to hear what the EarlyRizer filter problem sounds like, 
give it a listen.  (Its in a folder named TEMPORARY in the files 
section.)

--Steve 




 
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