Hi All

Can it really be true that this doesn't exist
as a software plugin ? Not looking for stereo
enhancer, multiband compression with agc type stuff.
Just a pure and simple AGC.

Audiounit is my highest priority, but I could also
use VST and DirectX.

Anyone?

In Energize there is an agc in the signal chain implemented.

www.bustad.com/energize

This is the .pdf of the signal chain

http://www.bustad.com/energize/overview.pdf

Energize looks pretty cool - kind of like putting a good sounding mastering compressor ahead of Ozone, only way cheaper $$ I bet.

Energize might be cool for what it does,
but as I wrote, don't need or want all the
other stuff. My master channel strip is set,
just need the agc to go in before.

Pure and simple AGC, no more no less.

I have been googling the thing but came
up with nothing. To me (not a coder) this
would seem like the easiest thing to do.

If it's not out there, does anyone know who
I could contact with the "idea"

Could you somehow describe, how this AGC should exactly work for you?

There may be different definitions for a thing like that...

.

Compression:

Deep threshold
High ratio
Fast attack
Very slow release.

RMS or peak detection to taste.

Forever,




Kim.

I think, most of us actually *know* what compressors, limiters and expanders are and what they do...

Jan:

I remember, that I wrote some time ago a simple processor class to prevent ouput bursting (exceeding the 0db mark) with a polyphonic synthesizer.

It was basically a look ahead limiter working well up to an certain burst level. It indeed worked internally like a very simple limiter.

I don't know, whether I can find it anywhere...

Another Idea would be a AGC, which reduces the gain automatically on exceeding peeks and *don't* regulates back. This means it (freezes) the gain to the maximum possible without any compression or limiting (after passing the entire production thru the effect ones, the gain is automatically reduced to the maximum in relation to the threshold).
With other words this is a kind Normalizer.

Maybe this is what you are looking for ?

You really have to explain it a little bit more...

.

Download the Fraser Pack here
http://www.espace-cubase.org/anglais/page.php?page=freesuppos
It's listed as 'Pack Fraser'

There are several plugins included. The 'Line Trim' might be what you need.

is he saying that he has his final signal processing already set and he just wants to put this after everything else to keep the audio at odb?

thanks for the lesson


-bread

stale bread wrote:

is he saying that he has his final signal processing already set and he just wants to put this after everything else to keep the audio at odb? thanks for the lesson -bread

No, I think, he wants to put it in before (in his second post he seems to say that).

The only thing I can imagine (he probably means) is a tool, which prevents for signal bursting in general or a makes tweakin the master fader (while excessive song creation) all the time somehow superfluous (even a kinda automatic) ...

I think, we have to wait untill he's back here...

.

ah, i see. hey hurry up and get back here Jan i'm interested in this too

Hm, sounds like a leveler .. attack and release of a compressor raised up. An AGC is similar to a slow compressor. So with high Attack and Release you'll get a neverending working comp.

Waves RenComp is known well for it's serious and discrete leveling. It's included in the 2nd
>> Musicians Bundle.>>

Maybe you mean this?

don't a lot of plugin compressors/limiters have AGC in them already..........?

AGC means automatic gain control. Yes it is a really
slow compressor/expander. I need this to automate
"riding the fader" to keep peak level.

I'm in broadcast and I need this for, say a 2 hour
radio program. You have a show with songs mixed
together, maintaining the peak level at 0db is almost
impossible to do live (speed is a major factor)

I don't want to alter the dynamic range of the individual songs. See this as a plugin that that
rides the fader.

Seeing all the stuff being done with plugins it's
really amazing to see that this hasn't been done.

Ah, yeah...
And you think, there is no existing plugin, which can satisfactory do this... ?

ok so now that i understand could someone point me in the direction for just this sort of thing, hopefully free, I thought I might find this useful and it would be for dj sets so if anybody knows a good one please chime in/

what.....? broadcast......?
shouldn't the radio stations feed do this already?

It's for a radio broadcast?

The station should already have a compressor set before the transmitter / antenna that pretty much flattens all or most dynamics out before it reaches the listeners.
They won't necesarilly have it rigged up before the desk, so you see an uncompressed reading on the peak meters, but the output should be well compressed already.

Have you checked with the station?

btw - it's a hardware thing, not software.

Hi Glassback

Well, tjeck with the station, that would be myself.
I'm doing the final processing aka twidling the
DBMax and Orban.

Yes they do the AGC stuff. We do produce material
going to other stations, and I would like to have
control over this, in the production fase.

I did find a Audio Unit agc plug called Rider,
but that didn't really do what I'm looking for.
Need more parameters like, attack, release, hold,
threshold ect.

Not sure exactly what you're after...

is it for pre-recorded packages? That's what I read from your previous post...
if so, have you tried Adobe Audition?
It's multitrack facility is second to none for this purpose, imo.

And you can crossfade and process away to your hearts content on mixes too.

Alternatively, record directly to pc, if you want to do it 'live', then use a programme like this for final mastering.

If you run it through the studio gear and make sure your recording input is post compressor, you'll get an already squashed signal making it easier to put the parts together without too much hassle getting rid of peaks - especially on speech.

Hope this helps - if it's not the info you're after, sorry.

I just can't quite picture what it is you're trying to do...

I don't get it. In what way does not a compressor suite your task?

Maybe Kjaerhus' Master Limiter is the one you're looking for: http://www.kvr-vst.com/get/650.html

On the other hand, I'd try to solve it at the source in pre-production of the radio show and make sure the songs have simular levels. A solution for this: http://www.geocities.com/mp3gain/ to normalise the levels of the MP3s. Then you can set the faders at unity gain, knowing it will not peak.

can't really guess if that would work for you, but you have AGC supplied in steinberg's dynamics plugin.

I want a consistastant level without reducing
the dynamic range of the individual song. Well
thats not quite possible automated, but AGC is
the thing that gets somewhat near.

Say you have a dj with 2 turntables recording into
the DAW. After this has been recorded there will
for sure be some ups and downs with levels, especially
during the part where the records get mixed/play together.
These parts will probably be the loudest
of this, say 1 hour recording. Now I define these
hot parts as 0db. This is where I want the agc to
bring the other parts up to match. I can do this
manually but that is quite time consuming.

This is where I would like to put in the agc, bounce
offline, and import this into the broadcasting system.
Would be like 5 minutes of work.

Yes I could just make our final on air processing do
the job, but I like the control. And if we were to
sell this show, burned on a cd, I would prefer to
deliver something that has a consistant level. Matter
of taste, maybe, but still I'm amased that no one has
ever done a PURE agc as a plugin. Seems very simple
compared to the plugs out there these days.

Compander, according to http://www.recordingeq.com/GlosPubAE.htm
Nope

MP3 - not considered broadcast quility here

The steinberg thing - its part of plug that does something else,
am i right in guessing it just a on/oof thing ?

Jan Holm wrote:

I want a consistastant level without reducing the dynamic range of the individual song. Well thats not quite possible automated, but AGC is the thing that gets somewhat near.

I'm sorry, but you can not alter the volume (bring it up when the track has a low amplitude, bring it down when the track has a high amplitude) and _keep_ the dynamic range.

And I still don't understand why a compressor with short attack and slow release does not do what you want to do.

no, the stein dynamics consist of gate, agc (level), compressor, softsat/limiter and, to my knowledge, just about everybody would try *not* to use it's compressor. BUT, agc thingie can do what it say's on the tin. Infact, it may be what you're after.

However, it only works within stein apps ...

Jan Holm wrote:

Say you have a dj with 2 turntables recording into the DAW. After this has been recorded there will for sure be some ups and downs with levels, especially during the part where the records get mixed/play together.

Scuse me for buttin in - isn't this a crossfade/mix issue that could/should be solved during the performance by the dj ?

broadcast processor PRO

Designed specially for the DRS 2006 radio automation system, this is a high end audio processor for Internet and FM broadcasting.

Closely simulating the signal chain of a traditional FM broadcast station, this plugin offers auto gain control, multiband EQ and volume control, and brickwall limiting.

Whether you want to create your own unique "signature sound" for your station, or simply control the various volume levels of your mp3 collection, this plugin will let you do it with ease.

We have borrowed much from our popular range of pro DirectX plugins to bring you this

click for bigger image (44k)

processor. The algorithms operate with full 64 bit internal resolution, the limiters use our proprietary intelligent look-ahead algorithms to boost volume without increasing distortion, and the usability of our realtime graphical display is second to none.

This plugin was designed in collaboration with our partner DRS Systemtechnik, authors of the DRS 2006 radio automation system.

See www.drs2006.com for full details on this leading PC based radio automation package.

http://www.tcelectronic.com/media/DBMAX_US_290.pdf

Goto page 22, this is what I want as a plugin. If you can't see the beauty or use of this, thats ok. But I
can and would very much like to have this as a plug.

Now, it seems as though this does not exist. Anyone
know how to get in contact with developers who might
be interested in doing an AGC plugin ?

Seems to work very similar to a compressor.

I DO understand that you want AGC, the only thing I don't understand is why a compressor does not work as an AGC for you. Could you please explain?

How about that?

@stefancrs - my compressors don't have the attack,
hold or release time required to act as a AGC.

@Jackle&Hyde - where do I sign in as a
beta tester, hell I'm willing to do alpha if required

btw devilswhisper, seens very interesting..

Just saw this one: http://www.kvr-vst.com/news/2326.html

Will it help if you tie this to a Gain control?

Jan Holm wrote:

@Jackle&Hyde - where do I sign in as a beta tester, hell I'm willing to do alpha if required

J&H "Individual Series" aren't public distributed.
I dunno, whether this tool will help you, but I'll send it to you if the GUI is ready.

We developed this code some time ago to have a simple sound burst limiter which has even not the overhead of a full featured compander/limiter...

We find, that it also is usable as the tool you want (up to a certain level).

But there were'nt a GUI yet. So we have to implement it now.

A question: How big is the amount of loudness difference usually with your compilations? 6db difference seems to be a acceptable working range for our plug, else there may be some "dynamics pumping" audible...

Please PM me your e-mail.
.

Here it is:

Jackle&Hyde AGC

Please note, that it is still in beta state.

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