From: Florian Faber <faber@faberman.de>
To: Rene Herman <rene.herman@keyaccess.nl>, alsa-devel@alsa-project.org
Subject: Re: What does 0dB refer to? (Logitech USB Speakers)
Date: Tue, 15 Apr 2008 06:09:00 +0200 [thread overview]
Message-ID: <200804150609.00533.faber@faberman.de> (raw)
In-Reply-To: <20080414235742.GB19108@tango.0pointer.de>
On Tuesday 15 April 2008 01:57:45 Lennart Poettering wrote:
> Dude, hush, hush, fix Wikipedia! It still says: "The decibel (dB) is
> a logarithmic unit of measurement that expresses the magnitude of a
> physical quantity _relative_ _to_ a specified or implied _reference_
> _level_".
The reference level is well defined (depending on the consumer/pro audio
context) and so is dBFS, dBu(RMS) and dBV(RMS). I don't see any problem
with that except that some people don't seem to know about this or
don't care. Especially crappy sound card manufacturers.
Oh boy, and we didn't even start bringing in head room into the debate..
Flo
--
Machines can do the work, so people have time to think.
public key 6C002249 x-hkp://wwwkeys.eu.pgp.net
next prev parent reply other threads:[~2008-04-15 4:09 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-11 20:46 What does 0dB refer to? (Logitech USB Speakers) Lennart Poettering
2008-04-12 0:09 ` Mark Brown
2008-04-12 7:27 ` John Rigg
2008-04-12 11:15 ` James Courtier-Dutton
2008-04-12 12:01 ` John Rigg
2008-04-12 13:16 ` Lennart Poettering
2008-04-12 13:35 ` Lennart Poettering
2008-04-12 18:14 ` James Courtier-Dutton
2008-04-12 18:25 ` Florian Faber
2008-04-12 19:26 ` James Courtier-Dutton
2008-04-12 19:34 ` James Courtier-Dutton
2008-04-12 19:37 ` Rene Herman
2008-04-14 16:48 ` Lennart Poettering
2008-04-14 17:00 ` Rene Herman
2008-04-14 17:24 ` Lennart Poettering
2008-04-14 22:47 ` Rene Herman
2008-04-14 23:57 ` Lennart Poettering
2008-04-15 1:04 ` Rene Herman
2008-04-15 4:09 ` Florian Faber [this message]
2008-04-15 17:02 ` Rene Herman
2008-04-12 21:41 ` John Rigg
2008-04-12 21:55 ` James Courtier-Dutton
2008-04-12 22:09 ` Rene Herman
2008-04-12 22:23 ` Rene Herman
2008-04-14 16:58 ` Lennart Poettering
2008-04-14 17:28 ` Rene Herman
2008-04-12 22:43 ` John Rigg
2008-04-13 12:36 ` Alexander E. Patrakov
2008-04-14 16:56 ` Lennart Poettering
2008-04-14 16:50 ` Lennart Poettering
2008-04-15 15:03 ` Wolfgang Woehl
2008-04-12 21:14 ` John Rigg
2008-04-12 21:54 ` stan
2008-04-12 23:00 ` John Rigg
2008-04-12 23:24 ` Lee Revell
2008-04-13 10:51 ` James Courtier-Dutton
2008-04-13 11:26 ` Florian Faber
2008-04-13 12:09 ` James Courtier-Dutton
2008-04-13 11:52 ` Rene Herman
2008-04-13 15:17 ` stan
2008-04-13 16:28 ` Rene Herman
2008-04-14 16:40 ` Lennart Poettering
2008-04-12 19:32 ` Rene Herman
2008-04-12 21:16 ` Rene Herman
2008-04-13 17:48 ` Mark Brown
2008-04-14 17:00 ` Lennart Poettering
2008-04-14 17:22 ` Rene Herman
2008-04-14 17:28 ` Lennart Poettering
2008-04-14 21:07 ` James Courtier-Dutton
2008-04-14 22:08 ` Aldrin Martoq
2008-04-14 23:43 ` Lennart Poettering
2008-04-14 23:54 ` Lee Revell
2008-04-15 2:18 ` Aldrin Martoq
2008-04-15 3:52 ` Florian Faber
2008-04-15 12:32 ` John Rigg
2008-04-15 13:12 ` John Rigg
2008-04-15 14:33 ` Rene Herman
2008-04-16 14:29 ` Rene Herman
2008-04-16 15:19 ` Rene Herman
2008-04-16 15:37 ` Rene Herman
2008-04-17 20:39 ` James Courtier-Dutton
2008-04-17 21:30 ` Rene Herman
2008-06-09 23:37 ` Rene Herman
2008-04-15 14:43 ` James Courtier-Dutton
2008-04-15 16:55 ` John Rigg
2008-04-15 15:42 ` Wolfgang Woehl
2008-04-15 15:51 ` Rene Herman
2008-04-15 16:41 ` John Rigg
2008-04-15 17:14 ` Wolfgang Woehl
2008-04-15 17:50 ` John Rigg
2008-04-20 1:01 ` Lennart Poettering
2008-04-20 15:23 ` stan
2008-04-21 3:20 ` Alexander E. Patrakov
2008-04-21 13:43 ` Takashi Iwai
2008-04-21 15:25 ` Rene Herman
2008-04-21 16:01 ` Jaroslav Kysela
2008-04-21 16:06 ` Takashi Iwai
2008-04-21 16:09 ` Jaroslav Kysela
2008-04-21 16:17 ` Takashi Iwai
2008-04-15 10:17 ` Takashi Iwai
2008-04-20 0:00 ` Lennart Poettering
2008-04-21 13:32 ` Takashi Iwai
2008-04-21 17:10 ` Rene Herman
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