Updated Chris's Dynamic Compressor

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pdf23ds
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Updated Chris's Dynamic Compressor

Post by pdf23ds » Sun May 09, 2010 12:14 am

http://pdf23ds.net/software/dynamic-compressor/

A new version of my dynamic compressor, 1.2.6, contains a new parameter, hardness, that replaces four others that were, apparently, hard to understand. It gives you the ability to get a more traditional, hard sound out of my compressor.

kozikowski
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Re: Updated Chris's Dynamic Compressor

Post by kozikowski » Sun May 09, 2010 5:17 am

What did you take out?

Koz

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Re: Updated Chris's Dynamic Compressor

Post by steve » Sun May 09, 2010 4:08 pm

The new GUI certainly looks less intimidating.

Using the default settings, this new version appears to produce more compression (the result is "louder") than the previous version.

When tested on simple generated tones, the raised parts show noticeable ripple in amplitude (which did not happen with the older version) as illustrated here (new compressor at top).
tracks003.png
tracks003.png (17.33 KiB) Viewed 4386 times
I've not looked at the code, but I assume that you have linked the 4 attack/decay width and exponent controls into the one "hardness" control. I think it would be useful to keep the "attack" and "decay" controls separate (possibly just labelling them "attack/decay time") as it is quite often useful to have separate control over attack and decay (for example, when compressing drum samples it is common for the attack to be very much faster than the decay - more so than with other types of sound).
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Re: Updated Chris's Dynamic Compressor

Post by whomper » Sun May 09, 2010 4:51 pm

sounds like the old version was better
shouldn't the user be able to set the loudness due to compression

i vote for more parameters never fewer
even if people are confused at first
they can just use the defaults
and twiddle what they understand
until they learn more and can take full advantage

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Re: Updated Chris's Dynamic Compressor

Post by steve » Sun May 09, 2010 5:12 pm

whomper wrote:sounds like the old version was better
To avoid any confusion, that is not what I am saying.
whomper wrote:shouldn't the user be able to set the loudness due to compression
It is more usual to use something before offering feedback about it.
The amount of compression can be set using the "Compress Ratio" control.
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Re: Updated Chris's Dynamic Compressor

Post by kozikowski » Sun May 09, 2010 5:42 pm

That's what I'm afraid of.

Is there a "Legacy" download for the old one?

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Re: Updated Chris's Dynamic Compressor

Post by kozikowski » Mon May 10, 2010 4:25 am

OK, this is serious. I really need the public link to the old version. I can't recommend the new one before trying it and I don't have continuous time in the next couple of weeks to do that. The new one doesn't sound the same, so I don't know if I'm solving the right problems or not.

Thanks,

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Re: Updated Chris's Dynamic Compressor

Post by whomper » Mon May 10, 2010 2:07 pm

stevethefiddle wrote:
whomper wrote:
whomper wrote:shouldn't the user be able to set the loudness due to compression
It is more usual to use something before offering feedback about it.
The amount of compression can be set using the "Compress Ratio" control.
Sorry about that.
I was *not* replying to you.

I went by his message.
Where it says the sound is now "harder".
Sorry if harder is not louder in your dictionary.
Many English speaking folks would take it that way.
Last edited by whomper on Mon May 10, 2010 2:11 pm, edited 1 time in total.

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Re: Updated Chris's Dynamic Compressor

Post by whomper » Mon May 10, 2010 2:09 pm

stevethefiddle wrote:...
tracks003.png
....
is it just my eyes
or an artifact of my pc display
but i see a periodic spike in the new compression results
wider in the low volume sample and narrower in the high one

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Re: Updated Chris's Dynamic Compressor

Post by steve » Mon May 10, 2010 7:22 pm

whomper wrote:Sorry about that.
I was *not* replying to you.
No problem.
whomper wrote:I went by his message.
Where it says the sound is now "harder".
There was an earlier discussion on the forum about the previous version of Chris's Dynamic Compressor in which Chris pointed out that more aggressive (harder compression setting were possible with the effect.

The default settings in both the old and new versions are very gentle and produce a subtle, near transparent, compression of the dynamics. With the old version, it was largely not understood by users how to achieve more aggressive settings (other than increasing the compression ratio). Chris has addressed this issue by changing the interface and making it much easier to make the affect more aggressive/harder. The "hardness" setting appears to adjust the attack/decay parameters which were previously 4 "cryptic" parameters, but are now combined into one "hardness" parameter.
whomper wrote:is it just my eyes ... but i see a periodic spike in the new compression results
No it's not your eyes - there was a periodic ripple. This was using pretty extreme settings, but the thing that is bugging me now is that I can't reproduce the problem.
Also, the default settings only appear to be very marginally louder than the old version and the attack/decay slightly softer.

With the old version, users would generally only use the "Compress Ratio" setting and leave everything else at the defaults. With the new version you can do the same and it will produce very similar results.

If you want to produce the same effect as the old version on the default settings, increase the "hardness" of the new version to 0.52 (the default in the new version is a little bit "softer".

Some settings that were favoured by many with the old version was to increase the Compress Ratio to 0.7
To achieve the same effect with the new version:
Increase the Compress Ratio to 0.7 and increase the Hardness to 0.76
The result will be virtually identical (the old version will be about 0.3 dB lower)
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