[OT] 3D Audio [was: Re: ReverbPreset]
[OT] 3D Audio [was: Re: ReverbPreset]
- Subject: [OT] 3D Audio [was: Re: ReverbPreset]
- From: tahome izwah <email@hidden>
- Date: Thu, 16 Apr 2009 08:09:56 +0200
Speaking of HRTF and binaural audio, has any of you tried this yet:
http://www.apple.com/downloads/macosx/audio/astoundstereoexpander.html
They seem to make some other high end stuff, too, which (to me) sounds
simply amazing.
http://www.genaudioinc.com/
Opinions?
--th
2009/4/16 Bob Lang <email@hidden>:
> Hi Russ
>
> Not sure what it is you want to know, nor whether you mean OS X or iPhone
> platform. My experience is with OS X only.
>
> For the OS X 3D mixer, each separate sound source should be put on a
> different input bus, and then each bus can be separately positioned in 3D
> space around the listener using polar co-ordinates. Azimuth is the
> horizontal angle to the listener's nose: 0 degrees is directly in front, -90
> is left, +90 is right and +/- 180 is behind; elevation is the vertical angle
> where -90 is below, 0 is level to the listener and +90 is above; distance is
> supposed to be distance from the listener in metres but I have my doubts on
> that one - to me it just sounds like another gain.
>
> If you switch an input bus to stereo passthrough mode then (afair) elevation
> does nothing, distance acts like another gain control, and azimuth (between
> -90 to +90) acts like a crude stereo balance control. I guess that if
> you're working in mono then it should act like a pan, but I've no idea what
> Pan law (if any!) it follows.
>
> The 3D mixer does have an on-or-off reverb control for each input bus, but
> I've never found any way to control the depth of reverb.
>
> One cool feature of the 3D mixer is the ability to generate HRTF audio which
> is output via stereo headphones. I find this can be more effective than a
> proper 5.1 speaker system, and it even works if you're using speakers rather
> than phones.
>
> Bob
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