From martin wood Sent Wed, Feb 17th 1999, 15:52
william ratke wrote: > > > >me too...but neither you nor i can actually hear them...what we do hear is > the > >effect of the ultrasonic sensors heterodyning the air and creating > harmonics > >below the actual tone...i.e. a 30khz tone might give off some low volume > 15khz > >harmonics, which you can hear if you have good ears...to see if you can > >actually hear 20+ k tones, you really need to listen to them on good > >headphones in one of those listening test type environments...(i.e. you > can't > >see when someone is or isn't playing a tone) > > im entirely into the theory of sound and how the human intakes it but > really i find textures that rest on the lo-fidelity end of the audio > spectrum have a much more profound effect upon me at all levels, (via > mego, the haters, gbv, vvm nd third eye found. amidst others, in quite a few > ways i prefer reel to reel/four track composition to digital, whenever i > play with digital i allways end up degrading the sound quality so much it > sounds like it was produced on a defunct gramaphone, really all a matter of > preference i suppose_ will horses for courses.... an answer to most questions. ;-)