|
Rockbox mail archiveSubject: Re: Dynamic Range Compressor revisitedRe: Dynamic Range Compressor revisited
From: Björn Stenberg <bjorn_at_haxx.se>
Date: Tue, 1 Oct 2013 09:11:32 +0200 Ryan, Your attached files were too big for the mail list handler to accept. I uploaded them here instead: http://download.rockbox.org/new-compressor/ Here is the text from Ryan's mail: -------- Here are some demo files. The artist is Iona, from the album "Heaven's Bright Sun". It is a live recording. The first set at ratio 4:1 and -9dB Threshold are more realistic settings (less extreme). On these you can observe how my modifications to the compressor preserve more of the crispness in the dynamic onsets. The overall feel is less "dark", while the other sample is a bit more muddy. Hearing them side by side, I can see how the average person may find the difference rather subtle. The second set use the "lmt" ratio setting, and -24dB Threshold show the difference between the more extreme settings. You can see that even though it sounds bad, the setting showcases the increased perception in the amount of dynamics by using an attack setting (all samples 15 ms attack time). With attack time set to 0 (no sample recorded with this setting), the "new" compressor sounds much more like the "old" compressor, except with the look-ahead action, the onset of compression does not come with as much correlated distortion. The less rapid gain change is the advantage here. Of course, I would prefer if some people try some listen tests on their own devices. If there are problems with the bit format kludge, I will be happy to fix that if it's necessary for somebody to do a fair evaluation. Thanks to anybody who gives this consideration. Attached are the sound samples. Look to the file names to get an idea of the settings used on each sample. Best Regards, Ryan ----------- -- BjörnReceived on 2013-10-01 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |