Re: [LAD] Attenuation of sounds in 3D space

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To: <linux-audio-dev@...>
Date: Thursday, July 29, 2010 - 1:59 pm

On 2010.07.29. 15:20, Gene Heskett wrote:

I am fairly sure 'doppler' *is* what I meant. I work on spatialization
project where sound sources can and will move around on arbitary
trajectories in virtual space.

Well as for 'distance law'. Microphone receives and registers sound
pressure instead of sound intensity.

intensity != pressure
intensity ~ pressure^2

While true that energy at 2x distance is 1/4, the pressure excerted is
1/2 neverheless (pressure value is independent of area - i.e. it uses
constant nominal area).
So you end up with a linear correlation instead of square one.

pressure ~ 1/distance
intensity ~ 1/distance^2

There is also the thing with acoustic impendance. For simplicity I
didn't include it into "equations" and that's the reason they're not
equalities, but are proportionalities.

>>> I failed to find anything discussing mixing in AMB. Can I just sum the

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Re: [LAD] Floating point processing and high dynamic range a..., Philipp Überbacher, (Wed Jul 21, 11:05 pm)
Re: [LAD] Floating point processing and high dynamic range a..., Philipp Überbacher, (Thu Jul 22, 1:16 am)
Re: [LAD] Floating point processing and high dynamic range a..., Philipp Überbacher, (Thu Jul 22, 10:32 am)
Re: [LAD] Floating point processing and high dynamic range a..., Jörn Nettingsmeier, (Wed Jul 21, 6:21 pm)
[LAD] Attenuation of sounds in 3D space, JohnLM, (Wed Jul 21, 7:06 pm)
Re: [LAD] Attenuation of sounds in 3D space, JohnLM, (Thu Jul 22, 10:20 am)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Wed Jul 21, 7:21 pm)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Wed Jul 21, 8:36 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Wed Jul 21, 8:58 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Wed Jul 21, 9:28 pm)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Wed Jul 21, 11:08 pm)
Re: [LAD] Attenuation of sounds in 3D space, Fernando Lopez-Lezcano, (Thu Jul 22, 2:58 am)
Re: [LAD] Attenuation of sounds in 3D space, Patrick Shirkey, (Thu Jul 22, 3:38 am)
Re: [LAD] Attenuation of sounds in 3D space, Paul Davis, (Thu Jul 22, 12:11 pm)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Thu Jul 22, 6:30 am)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Wed Jul 21, 9:18 pm)
Re: [LAD] Attenuation of sounds in 3D space, James Morris, (Thu Jul 22, 8:53 am)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Wed Jul 21, 11:04 pm)
Re: [LAD] Attenuation of sounds in 3D space, Florian Faber, (Fri Jul 23, 10:52 am)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 22, 12:01 pm)
Re: [LAD] Attenuation of sounds in 3D space, Fernando Lopez-Lezcano, (Thu Jul 22, 5:52 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 22, 6:23 pm)
Re: [LAD] Attenuation of sounds in 3D space, Fernando Lopez-Lezcano, (Thu Jul 22, 6:51 pm)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Thu Jul 22, 12:51 pm)
Re: [LAD] Attenuation of sounds in 3D space, Paul Davis, (Wed Jul 21, 9:10 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Wed Jul 21, 9:24 pm)
Re: [LAD] Attenuation of sounds in 3D space, Paul Davis, (Wed Jul 21, 9:45 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 22, 11:45 am)
Re: [LAD] Attenuation of sounds in 3D space, Paul Davis, (Thu Jul 22, 11:48 am)
Re: [LAD] Attenuation of sounds in 3D space, Chris Cannam, (Thu Jul 22, 2:29 pm)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Thu Jul 22, 2:45 pm)
Re: [LAD] Attenuation of sounds in 3D space, JohnLM, (Wed Jul 28, 7:46 pm)
Re: [LAD] Attenuation of sounds in 3D space, Arnold Krille, (Thu Jul 29, 1:58 am)
Re: [LAD] Attenuation of sounds in 3D space, JohnLM, (Thu Jul 29, 11:34 am)
Re: [LAD] Attenuation of sounds in 3D space, Jörn Nettingsmeier, (Thu Jul 29, 12:41 pm)
Re: [LAD] Attenuation of sounds in 3D space, Gene Heskett, (Thu Jul 29, 1:21 pm)
Re: [LAD] Attenuation of sounds in 3D space, JohnLM, (Thu Jul 29, 1:59 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 29, 2:25 pm)
Re: [LAD] Attenuation of sounds in 3D space, Gene Heskett, (Thu Jul 29, 3:06 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 29, 3:21 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 29, 2:14 pm)
Re: [LAD] Attenuation of sounds in 3D space, Fernando Lopez-Lezcano, (Thu Jul 29, 5:00 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 29, 5:32 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 29, 5:43 pm)
Re: [LAD] Attenuation of sounds in 3D space, Philipp Überbacher, (Thu Jul 29, 5:58 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 29, 5:28 pm)
Re: [LAD] Attenuation of sounds in 3D space, Lorenzo, (Thu Jul 29, 6:50 am)
Re: [LAD] Attenuation of sounds in 3D space, Paul Davis, (Thu Jul 22, 2:35 pm)
Re: [LAD] Attenuation of sounds in 3D space, Jörn Nettingsmeier, (Thu Jul 22, 10:40 pm)
Re: [LAD] Attenuation of sounds in 3D space, Gene Heskett, (Thu Jul 22, 6:15 pm)
Re: [LAD] Attenuation of sounds in 3D space, Jörn Nettingsmeier, (Thu Jul 22, 11:00 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Thu Jul 22, 6:43 pm)
Re: [LAD] Attenuation of sounds in 3D space, Jörn Nettingsmeier, (Thu Jul 22, 11:11 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Fri Jul 23, 6:51 am)
Re: [LAD] Attenuation of sounds in 3D space, Fernando Lopez-Lezcano, (Fri Jul 23, 5:03 pm)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Sat Jul 24, 8:45 am)
Re: [LAD] Attenuation of sounds in 3D space, Jörn Nettingsmeier, (Sat Jul 24, 9:20 am)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Fri Jul 23, 6:57 am)
Re: [LAD] Attenuation of sounds in 3D space, Folderol, (Wed Jul 21, 9:23 pm)
Re: [LAD] Attenuation of sounds in 3D space, Patrick Shirkey, (Thu Jul 22, 2:23 am)
Re: [LAD] Attenuation of sounds in 3D space, Ralf Mardorf, (Wed Jul 21, 9:30 pm)
Re: [LAD] Attenuation of sounds in 3D space, JohnLM, (Wed Jul 21, 8:35 pm)