Now think of it the other way: if DSP allows phase to be constant whilst attenuating (or boosting) the amplitude, again you have uncorrelated phase. If this is corrected the irritation goes away. ![]() However, in analogue filter manipulation a steeper cut results in the same phase shift long before any attenuation occurs. In the real world, frequency specific attenuation or boost is accompanied by phase shift: -3dB for example is accompanied by a 45 degree phase shift at that frequency in a "natural" single pole filter. What puts the non-measurable harsh in digital is the uncorrelated phase shifts which occur at high frequencies, where the ear can still detect, but nobody will accept the phenomenon because it hasn't been proposed by some university professor and proliferated via the media. ![]() ![]() Now to lose everyone: the proviso is that DSP works naturally that is to say that phase also plays its part and not just amplitude, because in DSP anything's possible. Tone and balance controls can be a great asset especially when used to benefit the listener.
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