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2 votes
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Audio EQ Cookbook Stability

Do I need to be concerned about stability? Yes, but not for the reasons you think (we'll get to this). Or are the coefficients that come out guaranteed to keep all poles inside the unit circle? Yes,...
Hilmar's user avatar
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3 votes
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low shelving filter frequency response diagnosis

Your filter coefficients and your difference equation are wrong. You assumed that the output signal $y[n]$ is fed back to the input, but what is actually fed back is the signal before the multiplier $...
Matt L.'s user avatar
  • 88.9k
1 vote

Sound having lower rms values but higher loudness.What are the possible reasons?

It looks like you are normalizing all files to and RMS of -25 dBFS, which is a reasonable thing to do. After normalizing the audio remain still low rms values. After the normalization the RMS should ...
Hilmar's user avatar
  • 42.6k
3 votes

What kind of distortion effect is this?

If a sine wave was going in, because of the asymmetric waveshape coming out, it can't be a straight memoryless waveshaper. The half wave coming out looks the impulse response of an overdamped or ...
robert bristow-johnson's user avatar
3 votes

Why do we choose 44.1 kHz as recording sampling rate?

The detailed historical reason for the choice of 44.1 khz vs basic Nyquist 40K, etc is given in The Art of Digital Audio by John Watkinson. The excerpt is shown at: http://www1.cs.columbia.edu/~hgs/...
JDiddy's user avatar
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