@Wanderer

Great. I've been using Jammin / Jack under linux and that has three bands, which seams reasonable to me.

Parameter wise you've got everything there I'd expect ecpect 'knee'

I might prefer to see the rartion as 4:1 5;1 etc rather than a percentage, only becayse that's what I'm used to.

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BroadBlues On Blues BroadBlues On Amiga Walker Broad

@broadblues

Ratio as x:1 makes sense. I will go for 3 bands then.

Can you decribe "knee" more?

At the moment, it linear. But I have other things like Tan() or Log() in mind, which might sound better. E.g. the Tan() sounds awsome in the Guitar Distorsion.

Edit. Ok, I know now what knee means. At the moment the compressor has a knee of 0. I will tink how I can parameterize the knee.

Last edited by Wanderer on 30-Oct-2011 at 09:05 PM.

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Is it harder to write drivers for the mediocre ATI cards?

For example a 4850 ?

@Ancalimon

Harder than what?


@Thread
Here is the first alpha Version:

http://www.hd-rec.de/Archive/fx_ultraband.lha

Needs to be copied to HD-Rec/Effects/Libs

It has no visualization yet, but

1. 3 bands
2. knee parameter

Have fun and let me know if this works for you.

I found it quite hard to adjust all parameters.
That is why I have thought about more simple parameters, like removing gain, knee and ratio and just provide a "drive" or "compression" parameter that sets these.
I also found that compression with a Tan() threshold function gives really good compression with few undesired artefacts.

Last edited by Wanderer on 02-Nov-2011 at 02:00 PM.

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@Wanderer

cool. i'll give this a try tonight when i get home from work. thanks as always; i hope to have some useful feedback for you soon.

-- eliyahu

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@Wanderer

I think I posted in the wrong thread. :) Anyway we are going to have a 4650 driver (the r700 card is called 4650, isn't it?). Why no 4850? I mean it's a much better card. Why spend time on the 4650 instead of writing a driver for 4850 which is affordable and fast?

Nice too see a new plugin. I will try it out sometimes later when have more time. Sidechain is another interesting part, specially when doing electronic dance music.

Anyway for the folks that wants more info on compression (wikipedia)
http://en.wikipedia.org/wiki/Dynamic_range_compression

GUI is very important however not so much colourfull like on this page, a look like on hdrec mixer and other plugins are fine and less cpu. Im not that good in what every knob is doing but i like seeing what i change while i listen. I hope you fix something with in/out levelmeters, and too see the bands etc. Here is an example on a bigger and more complex.
Info and picture on multiband compression

The stack on icon i already know and i have tried before and will try highering more. For the plugins stack i didnt know we could change it. thanks, written down so i can read it whenever. My memory is not the best :)

For using 4 or 3 bands i dont know whats best, maybe there is docs googling too see what folks use it for. Why limit it to 3 if theres any use. But then i really dont know.

@exec try the apps before saying it lacks stuff. sure it lacks vst and such but not all you described.

Last edited by Kicko on 02-Nov-2011 at 06:42 PM.

@Kicko

Thanks for pointing out the links.

First of all, I decided to use 3 bands now because:

1. 3 band is enough for everybody!
Seriously: I have been playing around with 4 and 5, but I found it incredably hard to do something meaningful with the middle bands. There is no good reason why and where to split. With 3 bands, I feel more comfortable. I have a bass, mid and trebble band, and I know immediately what I want to do to them.

2. 3 bands is faster than 4 bands and faster than N bands.

3. You can still use 2 compressors in a sequence if you need some finer adjustments.

4. With 3 bands, I am already pretty busy setting all the parameters.
I am still thinking to make the compressor part simplier.

But I quite learned a bit from this:

1. My compression algo is pretty good now, I should revisit the other compressor effects.

2. I like the "db" messure now more than my % for amplitide. I should change all other effects too to use the standard messure, so people know what to do straight aways without feeling "alien" when using HD-Rec.

The GUI is not fancy because...

1. Making a fancy GUI costs multiple times the time it takes to write the compressor.
And if you can choose, you probably would prefere me to write an autotune, new reverb and vocoder effect instead of drawing some colorful skin graphics.

2. We still talk about an Amiga. So we want to safe memory and CPU, and we want to run without 3D acceleration from 50MHz to 2GHz, from 640x480 to 1920x1600, from 16MB to 2GB of RAM.

3. I dont need to sell it to noobs who buy it only if it has a fancy GUI and dont know what to do with it afterwards anyway. I bet you can use it without colorful knobs.

BTW, I still think that knobs are made for fingers, but not for a mouse. I prefer sliders, even if they take more space.

Of course, visualization is very helpful and will be done.
I plan to display the theshold curve with the underlying signal so you can see how deep you drive the signal into the compression. It is very hard to judge with the ears sometimes, especially if the compressor works well and does not produce to much artefacts, you tend to compress too hard.

Last edited by Wanderer on 02-Nov-2011 at 07:32 PM.

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@Wanderer

BTW, I find the multi-band compressor really useful. I dont know how I could live without before... Thanks for motivating me to write one.

Anything else on the whishlist?

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@Wanderer

I hope you didnt think i wanted knobs or fancy gui. I like the minimal look of hd-rec. Its just the visual part i wanted to show you about levelmeters, band etc in a multiband plugin for ideas etc. I rather see you implement new stuff then paint :)

@Wanderer

Hate to be a little off topic but, where is version 1.0 of HD-Rec?. It's still version .09 on your web site. I had heard 1.0 came out a while back.

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@Thread

Now there is a visualisation aout what happens in the compressors.
Its a bit tricky since there is a lot of information to be displayed at once.

Ideally, you would see: The spectrum of the input signal and where the
compressor bands are, plugs how strong they exceed the threshold and
how strong the compression is, and last but not least the resulting signal.

At the moment its just this:
http://www.hd-rec.de/Archive/fx_ultraband.lha

Last edited by Wanderer on 03-Nov-2011 at 12:50 PM.

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@Wanderer

Looks great and look forward to testing it out.

_________________
BroadBlues On Blues BroadBlues On Amiga Walker Broad

Nice with visualisation :)

HD-Rec crashes on the sourceforge version with DSI in this way:

Holding RMB wherever on the screen and release it. (popupmenu under mouse)
Holding RMB on the titlebar menu and not choose anything like "project" and release the RMB.

What works is choosing from titlebar menu like load project, preferences etc.

However with old version v09z Beta (2010-01-14) i dont get this problems. Works ok.

I tried replacing the config file with old one, i tried old bins files, disabled audio/midi etc. Nothing helps.

You can check the grimreaper log here if you can see any important info.

heres my crashlog

@Broad or anyone else running os4

Can you please try out the version on sourceforge
Sourceforge HD-REC download

Last edited by Kicko on 03-Nov-2011 at 08:58 PM.
Last edited by Kicko on 03-Nov-2011 at 08:51 PM.
Last edited by Kicko on 03-Nov-2011 at 08:45 PM.
Last edited by Kicko on 03-Nov-2011 at 08:27 PM.
Last edited by Kicko on 03-Nov-2011 at 06:36 PM.

@Kicko

I haven't time at the moment, got to get to a gig, but I have the version that was in SVN and it doesn't crash for me, if that the same evrsion I'm not sure.

_________________
BroadBlues On Blues BroadBlues On Amiga Walker Broad

@Kicko

Hm.. it crashes on "RTS". That is highly likely that the stack was corrupted. Can you verify the stack size in the icons from both versions?

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@Wanderer

HD-Rec_OS4.info

The v0.9z says 24576 stack
Sourceforge i tried upto 10x times the old one like 245760 still crash

@broadblues
I'm not a musician but just curious. Years ago DBX used a form of compression (& expansion during playback) to overcome media noise (tape hiss) but why would you use compression for digital recording??

_________________
X1000 with 2GB memory & OS4.1FE

@Kicko

I can confirm that HD-Rec crashes when using RMB with sourceforge version of HD-Rec like described on #54. I have an uAone with the latest OS updates that is stable as it should..

@Beeblebrox

I remember something about Menus beeing blocking vs. non-blocking. It should be non-blocking, IIRC.
But of course, still shouldnt crash if in blocking mode, just block the graphical output.

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