Stereo Tool
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Stereo Tool 5.00
https://forums.stereotool.com/viewtopic.php?t=1991		 Page 24 of 29
Author:  hvz [ Sat Jun 05, 2010 1:21 am ]
Post subject:  Re: Stereo Tool 5.00
Bojcha, I've changed the AGC values as you requested - now in seconds / dB for a 6 dB drop or rise. However, wouldn't it be much easier to show dB / second?

Now I say: "it takes 0.75 seconds for the volume to rise 1 dB"
Then it would be: "Per second, the volume rises by 1.33 dB".

On the other hand, for down speed (now down slowness...) I can imagine that the time is more interesting, because you want to know how fast it responds.


I'll start a build and upload this version with bigger numbers when it's finished.
Author:  Bojcha [ Sat Jun 05, 2010 1:26 am ]
Post subject:  Re: Stereo Tool 5.00
We agreed to be not time, just any number .. ?

So if i pull down to bottom Down speed .. should be 0, one click at keybord mean 1 or 0.1 or 0.01 ..

edit:
Anyway .. let'see how's going with new numbers.

btw, Hans, am i any close with last preset?
Author:  SuperH [ Sat Jun 05, 2010 7:55 am ]
Post subject:  Re: Stereo Tool 5.00
Quote:
Quote:
updated some settings using the BETA004 posted above. I'm trying to avoid multiband at all costs in the algorithm. This is another shot at it - purely AGC and final compressor.


Attachments:
2AG2.zip [142.15 KiB]
Downloaded 8 times

That's honestly ......? I do not understand what you are doing ....... AGC need to manage the overall level of INPUT WHY THERE GATES? You simply PRESS with the signal from the input ... to reduce the noise between songs are noise gates !!!!!!!!!! Read carefully here is http://omniaaudio.com/manuals/6ex There is no and there was this!! Gates to AGC? I'm just shocked .......... Another matter to enter controlled frequency .... it was just great to read on page 68 omnia manuals.
You gate the AGC to stop it from elevating input audio levels, so that the spectral balance is maintained, and you don't squash out all of your base dynamics. Most MP3 data looks to maintain a -28dB average drop from 0dB in the digital realm, more or less. If an algorithm such as ReplayGain is implemented, obviously this number will be adjusted relative to the peak threshold.

Besides, you put your faith in Omnia? Hah. It is better than its Orban counterparts, but that's not saying much. :lol:

Look at what Neural Audio does. Omnia makes kids toys in comparison. Please consider investigation of how basic levelers work, and you'll see what I am trying to do. Also, look at how the HE-AAC CODEC aliases data in its Spectral Band Reproduction algorithm - balance at and beyond 4.5kHz is absolutely essential; you cannot clip any peaks in this region which overshoot the low-frequency counterparts which the high-frequency data is translated onto in the encoding process, or else the CODEC will squeak. If you drop the treble too much, the CODEC will sound watery and muffled. Please keep in mind that this is an interim build, and is not an official HE-AAC optimization release; this is merely a proof of concept using the slower leveling with the dual AGC system. It's a work in progress with Hvz's implementation of his particular product (which is an amazing soft DSP). :)
Author:  hvz [ Sat Jun 05, 2010 10:30 am ]
Post subject:  Re: Stereo Tool 5.00
Bigger up/down speed AGC values:
Winamp DSP plugin: http://www.stereotool.com/download/dsp_ ... ETA005.exe
Stand alone version: http://www.stereotool.com/download/ster ... ETA005.exe
VST version: http://www.stereotool.com/download/vst_ ... ETA005.dll
VST version (No SSE2): http://www.stereotool.com/download/vst_ ... ETA005.dll
Command line version: http://www.stereotool.com/download/ster ... ETA005.exe

per 6 dB means: If the input level drops by 6 dB, this is how many dB/second the volume rises. (So if the volume drops by 12 dB, its twice this level). Same for volume rises and drop speed.

Sound is NOT changed!
Author:  Bojcha [ Sat Jun 05, 2010 3:13 pm ]
Post subject:  Re: Stereo Tool 5.00
Much better numbers... it'll be good and for multiband too.

question: Is there some "hold" for down speed in both AGCs ?
Author:  hvz [ Sat Jun 05, 2010 3:15 pm ]
Post subject:  Re: Stereo Tool 5.00
Quote:
question: Is there some "hold" for down speed in both AGCs ?
Hold for DOWN speed? No, only for up speed - and that's dynamic based on audio content. (Short spike = shorter hold time).

But I think that with the new behavior since version BETA3 (move to TARGET level instead of '1') there's much less need of hold times...
Author:  Bojcha [ Sat Jun 05, 2010 3:44 pm ]
Post subject:  Re: Stereo Tool 5.00
Well then if i set Down-speed to max (top now that's number 37242) .. it still remain few miliseconds in audio which is now leveled, like late reaction ..

In Singleband Compressor/limiter .. if i set down-speed to max .999 (right). it reacts exactly as should, in same milisecond audio is down.

so that's why i asked this for agc.
Author:  Takeda [ Sat Jun 05, 2010 4:19 pm ]
Post subject:  Re: Stereo Tool 5.00
Sorry my first post maybe complaining but, the settings from the 2nd stage from agc are not saving, when i start winamp again, it loads off, is there anything i doing wrong?
btw im using windows 7 64bit. Thank you very much for this nice program, i will donate asap, i never saw anything so usefull like this.
Author:  hvz [ Sat Jun 05, 2010 4:42 pm ]
Post subject:  Re: Stereo Tool 5.00
Quote:
Sorry my first post maybe complaining but, the settings from the 2nd stage from agc are not saving, when i start winamp again, it loads off, is there anything i doing wrong?
btw im using windows 7 64bit. Thank you very much for this nice program, i will donate asap, i never saw anything so usefull like this.
Hi Takeda,

It's still a beta version and I wasn't completely sure that the 2nd AGC stage was really necessary. And until a few hours ago it seemed that the 2nd AGC stage - even if it's turned off - was hurting the performance. That's why I haven't finished it completely yet - and that's why the settings aren't saved.

I can now report that I managed to get the performance back (even slightly better than version 5.00 now) - and since the 2nd AGC stage seems useful I'll keep it. So I'll add the saving of the settings soon.
Author:  soundmanfm [ Sat Jun 05, 2010 5:03 pm ]
Post subject:  Re: Stereo Tool 5.00
2 SuperH

Maybe there is in this sense. But the work AGC be broadband. Another thing that can solve your problem filter. I spent tetst audio on the Internet. Protsesor worked fine. I have not heard of distortion ... Use the preset radio but with a smaller Louness But it can not be the gate. This task performs the filter.....
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