26 Aug
2005
26 Aug
'05
7:41 p.m.
Message: 3
Date: Fri, 26 Aug 2005 11:47:10 -0700
From: Mike Jewell <mj405(a)oneupaudio.com>
Subject: [linux-audio-user] I just want to EQ the quiet parts
To: linux-audio-user(a)music.columbia.edu
Message-ID: <1125082030.31648.30.camel(a)localhost.localdomain>
Content-Type: text/plain
Hi LAUs,
I'm pretty new to all this but have been using Audacity with plugins,
etc and have recently been experimenting with Ardour and Jamin.
What I want to do is EQ the "quiet" parts only of a wav file. The file
is a tape recording of some source (probably LP) done on a cheap
recorder. There is lots of rumble that is mostly noticeable (of course)
in the quieter spots on the track. Playing with Jamin's 30 band EQ
shows that filtering out a band or two around 200 Hz helps a LOT but
this wrecks the bass in the louder "musical" sections.
What I would do is...
Render a couple of versions through Jamin. One with the severe 200hz cut
for the quieter sections, and one with settings that work well on the
louder bits.
Then, line them up in Ardour so they start at exactly the same time and
cut/crossfade between them so the bass cut version is only used where
it's needed.
Longish crossfades should make the changeovers inaudible.
Is there something like a noise gate that, instead of silencing
everything below a certain threshold, would apply a given EQ to it
instead? With all the cool Linux Audio tools out there, it seems like
there must be some way to do this. (Maybe Jamin can and I just don't
see it.)
I guess you could use the spectral gate in freqtweak to do this. It does
tend to change the sound a little (It's not really meant for this kind
of thing) though considering the quality of the source it could well be
acceptable.
Just stay away from the delay, feedback and warp settings or you'll be
playing with it all night... :)
If Jamin had inverse ratios for the compressor sections then you could
do some expansion. Perhaps if you ask the authors they will look into
it?
Thanks,
Mike
Mike Jewell
One-Up Audio
26 Aug
26 Aug
8:14 p.m.
On Fri, 2005-08-26 at 17:51, philicorda wrote:
It would be much easier to use the scenes in JAMin. You can change
the scene crossfade time as well.
This would be a job for Steve but I think it's a good idea ;-)
--
Jan "Evil Twin" Depner
The Fuzzy Dice
http://www.thefuzzydice.com
"As we enjoy great advantages from the invention of others, we should be
glad of an opportunity to serve others by any invention of ours, and this
we should do freely and generously."
Benjamin Franklin, on declining patents offered by the governor of
Pennsylvania for his "Pennsylvania Fireplace", c. 1744
Message: 3
Date: Fri, 26 Aug 2005 11:47:10 -0700
From: Mike Jewell <mj405(a)oneupaudio.com>
Subject: [linux-audio-user] I just want to EQ the quiet parts
To: linux-audio-user(a)music.columbia.edu
Message-ID: <1125082030.31648.30.camel(a)localhost.localdomain>
Content-Type: text/plain
Hi LAUs,
I'm pretty new to all this but have been using Audacity with plugins,
etc and have recently been experimenting with Ardour and Jamin.
What I want to do is EQ the "quiet" parts only of a wav file. The file
is a tape recording of some source (probably LP) done on a cheap
recorder. There is lots of rumble that is mostly noticeable (of course)
in the quieter spots on the track. Playing with Jamin's 30 band EQ
shows that filtering out a band or two around 200 Hz helps a LOT but
this wrecks the bass in the louder "musical" sections.
What I would do is...
Render a couple of versions through Jamin. One with the severe 200hz cut
for the quieter sections, and one with settings that work well on the
louder bits.
Then, line them up in Ardour so they start at exactly the same time and
cut/crossfade between them so the bass cut version is only used where
it's needed.
Longish crossfades should make the changeovers inaudible.
Is there something like a noise gate that, instead of silencing
everything below a certain threshold, would apply a given EQ to it
instead? With all the cool Linux Audio tools out there, it seems like
there must be some way to do this. (Maybe Jamin can and I just don't
see it.)
I guess you could use the spectral gate in freqtweak to do this. It does
tend to change the sound a little (It's not really meant for this kind
of thing) though considering the quality of the source it could well be
acceptable.
Just stay away from the delay, feedback and warp settings or you'll be
playing with it all night... :)
If Jamin had inverse ratios for the compressor sections then you could
do some expansion. Perhaps if you ask the authors they will look into
it?
27 Aug
27 Aug
7:42 a.m.
Jan Depner wrote:
On Fri, 2005-08-26 at 17:51, philicorda wrote:
>>Message: 3
>>Date: Fri, 26 Aug 2005 11:47:10 -0700
>>From: Mike Jewell <mj405(a)oneupaudio.com>
>>Subject: [linux-audio-user] I just want to EQ the quiet parts
>>To: linux-audio-user(a)music.columbia.edu
>>Message-ID: <1125082030.31648.30.camel(a)localhost.localdomain>
>>Content-Type: text/plain
>>
>>Hi LAUs,
>>
>>I'm pretty new to all this but have been using Audacity with plugins,
>>etc and have recently been experimenting with Ardour and Jamin.
>>
>>What I want to do is EQ the "quiet" parts only of a wav file. The file
>>is a tape recording of some source (probably LP) done on a cheap
>>recorder. There is lots of rumble that is mostly noticeable (of course)
>>in the quieter spots on the track. Playing with Jamin's 30 band EQ
>>shows that filtering out a band or two around 200 Hz helps a LOT but
>>this wrecks the bass in the louder "musical" sections.
>
>What I would do is...
>Render a couple of versions through Jamin. One with the severe 200hz cut
>for the quieter sections, and one with settings that work well on the
>louder bits.
>Then, line them up in Ardour so they start at exactly the same time and
>cut/crossfade between them so the bass cut version is only used where
>it's needed.
>Longish crossfades should make the changeovers inaudible.
>
Now that seems a simple and nice approach.
Thanks as I had the same problem.
Cheers
Bob
It would be much easier to use the scenes in JAMin. You can change
the scene crossfade time as well.
This would be a job for Steve but I think it's a good idea ;-)
Is there
something like a noise gate that, instead of silencing
everything below a certain threshold, would apply a given EQ to it
instead? With all the cool Linux Audio tools out there, it seems like
there must be some way to do this. (Maybe Jamin can and I just don't
see it.)
I guess you could use the spectral gate in freqtweak to do this. It does
tend to change the sound a little (It's not really meant for this kind
of thing) though considering the quality of the source it could well be
acceptable.
Just stay away from the delay, feedback and warp settings or you'll be
playing with it all night... :)
If Jamin had inverse ratios for the compressor sections then you could
do some expansion. Perhaps if you ask the authors they will look into
it?
26 Aug
26 Aug
8:25 p.m.
On Fri, 2005-08-26 at 23:51 +0100, philicorda wrote:
Sounds interesting. I'll take a look in my spare time... 8^)
What I would do is...
Render a couple of versions through Jamin. One with the severe 200hz cut
for the quieter sections, and one with settings that work well on the
louder bits.
Then, line them up in Ardour so they start at exactly the same time and
cut/crossfade between them so the bass cut version is only used where
it's needed.
Longish crossfades should make the changeovers inaudible.
That's a good idea but only practical for a really important piece. For
my project it would need to be fast and automatic.
Is there something like a noise gate that, instead of silencing
everything below a certain threshold, would apply a given EQ to it
instead? With all the cool Linux Audio tools out there, it seems like
there must be some way to do this. (Maybe Jamin can and I just don't
see it.)
I guess you could use the spectral gate in freqtweak to do this. It does
tend to change the sound a little (It's not really meant for this kind
of thing) though considering the quality of the source it could well be
acceptable.
Just stay away from the delay, feedback and warp settings or you'll be
playing with it all night... :)
If Jamin had inverse ratios for the compressor sections then you could
do some expansion. Perhaps if you ask the authors they will look into
it?
Now, that sounds very interesting. Are there any expander plugins? If
one existed with the right thresholds, etc, I can imagine it could work
like a proportional noise gate where it just starts attenuating
gradually below a certain dB level. Could be a handy tool.
Thanks,
Mike
Mike Jewell
One-Up Audio
7029
days inactive
7030
days old
linux-audio-user@lists.linuxaudio.org
3 comments
4 participants
participants (4)
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Bob -
Jan Depner -
Mike Jewell -
philicorda