Super Filter = No filter

[Ethan Duni]

At 03:32 PM 3/5/99 -0500, you wrote:
>There have been some studies that indicate that phase is important (and some
>that say that its not) To get a particular waveshape i.e. square it is
>important to sum the right phase of harmonics. But could you hear the
>difference... I guess you could if the fundamental was at a reasonably low
>audio frequency. A scope would definatly show the wave as distorted. In the
>case of the square wave, if harmonics were shifted in phase, the rise time
>would be affected (maybe trashed). As far as the perception to human hearing
>???  :-) 

-it may not make a big difference so far as the sound of a static wave, but
if the phases of various harmonics were to change over time, then that would
probably make a difference.. remember that phase modulation and frequency
modulation are related by differntiation, so changes in the phases would
correspond to changes in their frequencies, no? 

Ethan