All Questions
Tagged with signal-processing biophysics
4
questions
1
vote
2
answers
163
views
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 ...
- 111
1
vote
3
answers
157
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How does a spectrum analyzer works. Example with particular case: eyes [closed]
[edit]: I reformulated my question to first talk about general spectrum analyzer and then ask about how vision works (which is a particular case of spectrum analyzer as I explain below).
Let's assume ...
- 1,450
1
vote
1
answer
758
views
Phase Locking vs. Synchrony
Consider two cosinusoidal signals given by \begin{gather*} z_1(t) = A_1\cos\phi_1(t)\\ z_2(t) = A_2\cos\phi_2(t) \end{gather*}
with
\begin{gather*} \phi_1(t) = (\omega_1 t + \theta_1)\\\phi_2(t) = (...
- 359
2
votes
7
answers
4k
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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 ...
- 131