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Old 12th December 2016
Originally Posted by Casey View Post
It is a can of worms but somehow the very slight smearing of a 384kHz filter is enough to alter the timing of the sound in a way that to me is quite damaging.
Others have found similar effects. Seems the transient signals above the human hearing range offer some location cues and depth perception that is not fully explored yet.

The January 2017 issue of The Absolute Sound has an interesting article tiltled: "Could This be Audio's Final Frontier"? The concept of "infinite bandwidth" is explored with discussions of Haas and "leading edge" effects.

A practical example using the EnigmAcoustics Sopranino super tweeter is explained. This $4995 horn loaded electrostatic super tweeter goes up to 80k hz. When run in parallel with ordinary speakers it adds a more accurate "leading edge" to the sound because the arrival time of musical information is faster. This adds to the sensory perceived "depth" and "location" of the sounds.

The Haas Precedent effect says if two similar sounds arrive at our ears at the same short period of time, they will be perceived as a single sound and the one that arrives first will be dominant in determining the perception of location to the sound's source.

Using wider bandwidth audio gear can help in preserving these location cues. That is one reason why I try to maintain a 2~200k hz bandwidth in analog gear, to preserve the location cues while avoiding phase shift in the audio band.