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From: haitex@pnet01.cts.com (Wade Bickel)
Newsgroups: comp.sys.amiga
Subject: Re: Sonic Tomfoolery
Message-ID: <2606@crash.cts.com>
Date: 1 Mar 88 14:56:23 GMT
Sender: news@crash.cts.com
Organization: People-Net [pnet01], El Cajon CA
Lines: 29

dillon@CORY.BERKELEY.EDU (Matt Dillon) writes:
>>You're working too hard - the human ear has no mechanism for detection of
>>phase. Only for low frequencies does it matter, and there only because it
>>manifests as a slight time delay which neurons can measure.
>	
>	Huh, where did this come from?  I've played around with sound
>quite a bit, and if I generate two tones of slightly different frequencies,
>I can hear the phase quite fine thank you.  In fact, if I generate two
>tones of the same frequency that are out of phase, I can also tell the
>difference.  This effect is certainly not limited to low frequencies.
>
>				-Matt


        Seems to me that you should be able to recognize phase only above
a certain frequency.  That is, stereo phase, which is what the original
posting was refering to.

        If I'm not mistaken, at low frequencies, say those much below 2K,
the waves have a longer period than the distance between your ears.  Seems
to me that this would destroy phase recognition.  Of course, most tones
include harmonics, so a "low" note might still exihibit a shifting of phase.


                                                        Wade.


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