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11 votes

Fast pitch recognition

"Is there a way to measure frequency (detect pitch) better than FFT, that is, with better resolution in less acquisition time?" yes there is. or are. there are multiple better ways to do musical pit …
robert bristow-johnson's user avatar
4 votes

Extract Sine Phase and Amplitude - accurate and robust method

This is the problem we have in sinusoidal modeling. There are lots of issues, and your window function might be one of them. This paper by me is a little more general in that it not only are the ampli …
robert bristow-johnson's user avatar
4 votes

Estimate Sine Frequency under White Noise — simple and effective method

I wasn't going to answer this, since the question is stale. But I'm a little bit dissatisfied with Royi's answer and with the Kay algorithm as presented. The Kay method is, at first glance, simply us …
robert bristow-johnson's user avatar
2 votes
Accepted

Power estimation

changing the notation to something better, i think the summations have to go in both the numerator and denominator: $$ \hat{m} = \frac{\sum_n b[n]a^*[n]}{\sum_n a[n]a^*[n] - \sum_n \sigma^2_{N_a} } …
robert bristow-johnson's user avatar
1 vote

Least Squares Fitting to Inverse Exponential Function

i actually had this as a problem for my master's thesis 4 decades ago. it was before i was doing anything in audio. the application was predicting the equilibrium pressure of a very slow osmosis exp …
robert bristow-johnson's user avatar