[directmusic] Re: Volume progression
- From: "Todor Fay" <todor@xxxxxxxxxxxxx>
- To: <directmusic@xxxxxxxxxxxxx>
- Date: Tue, 5 Nov 2002 10:27:35 -0800
The scaling is correct. DLS specifies it in percentage of dB. That's why
you see most of the action in the top 10%. Now, that's not to say that
DLS Designer shouldn't make it easier...
Also, you would find linear control of volume equally unsatisfying. For
that, every halving in sound would equal 6dB, which would mean
everything would be clustered at the bottom.
That's why MIDI volume and velocity have this really funky curve that is
optimized to get the best out of 127 levels, and it does indeed feel
about the right fit (for example, when you drag volume in the band
window.) I forget the equation, but if somebody wants it I can look it
up. It's also part of the DLS spec.
Todor
-----Original Message-----
From: directmusic-bounce@xxxxxxxxxxxxx
[mailto:directmusic-bounce@xxxxxxxxxxxxx] On Behalf Of Scott Morgan
Sent: Tuesday, November 05, 2002 7:33 AM
To: directmusic@xxxxxxxxxxxxx
Subject: [directmusic] Re: Volume progression
hehe, you should see the DLS bugs I reported at MS. Very broken. Some
of
the stuff should be fixed in DX9. The scaling is the same though.
Changing
that would kill people's existing content.
-Scott Morgan
http://Morganstudios.com
----- Original Message -----
From: "Ciaran Walsh" <ciaran@xxxxxxxxxxxxxx>
To: <directmusic@xxxxxxxxxxxxx>
Sent: Tuesday, November 05, 2002 10:05 AM
Subject: [directmusic] Re: Volume progression
>
> yeah, pretty annoying, but then DLS is pretty hit and miss at the best
of
> times... I find a fair amount of trial and error is usually required
;)
>
> -----Original Message-----
> From: directmusic-bounce@xxxxxxxxxxxxx
> [mailto:directmusic-bounce@xxxxxxxxxxxxx]On Behalf Of Bjorn Lynne
> Sent: 05 November 2002 15:59
> To: directmusic@xxxxxxxxxxxxx
> Subject: [directmusic] Re: Volume progression
>
>
>
> > If I remember correctly, it's using "hundredths of a decibel" as
> units,
> > so "-9600L" is really -96db.
> > Since -6db (-600L) means "half the volume", you'll need to use
an
> > exponential curve that increases twice as much during each time
period
to
> > give a linear-sounding fade.
>
>
> Actually, this got me thinking about the odd volume scaling on the
ADSR
> envelope in the instrument designer. If you set the Sustain of an
instrument
> to 100%, it's at max volume, but if you put it down to 90%, it seems
to
drop
> a LOT more than 10% of the volume - in fact, it goes nearly silent. It
seems
> that the entire range of volume is covered in the 90-100% and if you
want
to
> tweak the level, you've got to try things like "98%", "97%" etc. which
seem
> to be a lot different just within that one percent. And anything under
90%
> is just quiet. Well almost.
>
> Anybody else find this a bit odd?
>
> --
> Bjorn Lynne - Composer, Producer, Sound Designer
> Main music site: www.lynnemusic.com
>
>
>
Other related posts:
