Excerpts from Paul Davis's message of 2010-07-21 19:26:40 +0200: > On Wed, Jul 21, 2010 at 11:52 AM, JohnLM <[email protected]> wrote: > > > - If I muliply float by 2.0, do I get twice the sound pressure or twice the > > sound intensity, or something else? > > you get samples that are twice as loud. this doesn't have a linear > relationship with sound pressure or intensity or perceived volume > other than "its louder"
I think the word loudness is a problem here. Afaik it usually refers to how it is perceived, and twice the amplitude doesn't mean twice the perceived loudness. It may mean twice the sound pressure level, energy, or intensity (if we ignore analogue anomalies, as you wrote in some other answer). It may be nitpicking, but I found it important to differentiate between the physical phenomenon and the perception. I like Musimathics by Gareth Loy for the good explanations and clear use of terms. It actually succeeds in explaining everything in clear and easily understandable terms, I can recommend it for the writing style alone. -- Regards, Philipp -- "Wir stehen selbst enttäuscht und sehn betroffen / Den Vorhang zu und alle Fragen offen." Bertolt Brecht, Der gute Mensch von Sezuan _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
