[ddots-l] Re: VU meters in DD
- From: "Studio Montebello" <studiomontebello@xxxxxxxxxxxx>
- To: <ddots-l@xxxxxxxxxxxxx>
- Date: Wed, 21 Oct 2009 19:10:45 -0400
From the Sound Forge help:
The peak meters display instantaneous levels during playback to help you
determine the loudest level in your audio signal and whether the signal is
clipping.
Volume unit (VU) and peak program (PPM) meters help you determine the perceived
loudness of your audio signal (peak program meters provide faster response
times to volume increases than VU meters). VU/PPM meters are especially helpful
when you're mastering: comparing two audio files' VU/PPM readings will help
take the guesswork out of matching levels.
Jean
Visitez mon site / Visit my site at http://www.studiomontebello.com
----- Original Message -----
From: Bryan Smart
To: ddots-l@xxxxxxxxxxxxx
Sent: Wednesday, October 21, 2009 6:14 PM
Subject: [ddots-l] Re: VU meters in DD
Maybe I misunderstood what he wants, or maybe you misunderstood. Anyway...
If you release the lock and hold, then you have a mostly instantaneous report
of the current signal strength. You are right that this isn't the traditional
definition of a VU meter, but you are wrong that a VU meter measures "loudness".
The difference between the instantaneous report and a traditional VU meter is
that a VU meter is designed with a lag to eliminate abrupt changes. Roughly
speaking, a VU meter will trend toward the average input over the last 300Ms or
so. Sonar's meters don't respond in this way by default, but you can easily
make them respond with any curves that you'd like by using the Audio Meter
options dialog in the options menu.
As to "loudness", the concept of loudness is very vague when we're talking
about a recording, since we could be listening to that recording on tiny
headphones or a huge PA. The only factors that matter in gauging the level of a
recording is its relative strength when compared to another signal of fixed
strength, and the dynamic range of the material (difference between the most
quiet and most loud parts of the recording). In digital audio, the maximum
signal strength is 0DB, so the peak of your recording matters, and you'd use a
peak meter for that. However, more important is the dynamic range of the
recording. A narrow dynamic range makes the recording seem louder, and you'd
measure that with an RMS meter. You can switch between these meter modes in the
meter's context menu.
CakeTalking is not able to report separate meters for the left and right
channel of a stereo track. Instead, you hear a single meter that represents the
summed signal. In most situations, that is what most people care about, since,
if you're establishing level for a stereo signal, you rarely, if ever, wish to
distort the stereo image by independently adjusting gain on the individual
channels.
Bryan
------------------------------------------------------------------------------
From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Studio Montebello
Sent: Wednesday, October 21, 2009 5:17 PM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: VU meters in DD
Unlocking the peak meter hold doesn't make a peak meter a VU meter!
A peak meter is what it says it measures the peak signal whereas a VU meter
measures the loudness, two different things.
Jean
Visitez mon site / Visit my site at http://www.studiomontebello.com
----- Original Message -----
From: Bryan Smart
To: ddots-l@xxxxxxxxxxxxx
Sent: Wednesday, October 21, 2009 3:34 PM
Subject: [ddots-l] Re: VU meters in DD
But it can. If you open the meter context menu and deselect hold and lock
peeks, then you'll have a continuously fluctuating, and mostly useless, vu
meter.
Not sure why people want a non-peek meter when it isn't possible for any
screen reader to report every value that appears without driving you crazy with
non-stop speech, but this method will let you have the experience of trying.
Bryan
----------------------------------------------------------------------------
From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Phil Muir
Sent: Wednesday, October 21, 2009 2:39 PM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: VU meters in DD
No it doesn't.
Regards, Phil Muir
Accessibility Training
Telephone: US (615) 713-2021
UK+44-1747-821-794
Mobile: UK +44-7968-136-246
E-mail:
info@xxxxxxxxxxxxxxxxxxxxxxxxxxx
URL:
www.accessibilitytraining.co.uk/
-----Original Message-----
From: ddots-l-bounce@xxxxxxxxxxxxx
[mailto:ddots-l-bounce@xxxxxxxxxxxxx]On Behalf Of Christopher Bartlett
Sent: 21 October 2009 18:37
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] VU meters in DD
Previous iterations of Dancing Dots would report peak meters but not the
running VU meters. Since Jsonar can do this, does Cake Talking do it now?
Chris Bartlett
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