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Is the human singing voice different from a linear, time-invariant (LTI) system?
Typically the human voice is modelled by a linear, time-invariant (LTI) system.
An LTI system cannot add any frequency components to an input signal. This is obvious from the input-output relation in ...
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Can human ear distinguish between sounds of different phase?
A noise cancelling headphone produces a sound that's out of phase with ambient noise, mixes them and hence cancels them.
But I wonder if we were to hear the 2 sounds which are out of phase to each ...
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