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2 votes

Scenarios where Phase Response is (non-)problematic

One audio example: The human ear is quite insensitive to monaural phase but quite very sensitive to interaural phase. Let's make a stereo signal by simply duplicating a mono signal. If you apply a (...
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2 votes

Scenarios where Phase Response is (non-)problematic

Divide the filter's frequency response in two parts: a passband (the portion of the input that should be present in the output), and a stopband (the portion of the input that should be rejected). In ...
  • 14.4k
2 votes
Accepted

Frequency components in Bin averaging

@MarcusMuller already answered in his comment, but I'll elaborate a little. In one approach, you're applying a moving average filter. That's perfectly fine. In your other approach, your decimating ...
  • 3,455
0 votes
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Output Precision for Filter

The log2 computation is really a consideration for the size of the (extended precision) accumulator for a fixed point FIR filter design: The sum of the absolute value of the coefficients is the ...
  • 43.4k
0 votes

Output Precision for Filter

You should look at the sum of the magnitude of the coefficients, if what you mean log2(sum(abs(LPF_COEFF))) = 17.87 then we know that $$\begin{eqnarray} \left|\sum ...
  • 1,901
0 votes

Subtract Lowpass from Wire to Get Allpass

Let APF $A(z)$ be $$ A(z) = \frac{z^{-N} + a_1z^{1-N} + ... + a_{N-1}z^{-1} + a_N}{1 + a_1z^{-1} + ... + a_{N-1}z^{1-N} + a_Nz^{-N}} $$ Then define your complementary filter as $$\begin{align} H(z) &...
2 votes
Accepted

Subtract Lowpass from Wire to Get Allpass

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