Linked Questions

10
votes
2answers
2k views

How to deal with low fundamental when using AMDF for pitch extraction?

I am using the Average Magnitude Difference Function to estimate the fundamental frequency of a quasi-periodic audio signal. The AMDF is defined as $$ D_n = \frac{1}{N-n}\sum_{k=n}^{N-1}|S_k - S_{k-n}...
0
votes
1answer
1k views

YIN pitch estimation algoritm-simplified explanation [closed]

can someone please explain the steps of YIN pitch detection algorithm in a simple way "especially the last 3 steps". here is the research paper of YIN algorithm http://audition.ens.fr/adc/pdf/...
0
votes
1answer
678 views

What's wrong with this Average Magnitude Difference algorithm?

I implemented this Average Magnitude Difference algorithm in Javascript ...
2
votes
1answer
242 views

Distinguish harmonic sounds from non-harmonic

I am trying to distinguish harmonic sounds in the range from $100\rm \ Hz$ to $1000\rm \ Hz$ in my audio recording. I attach the spectrogram ($y$-axis is freqeuncy and $x$-axis is time) of a typical ...
0
votes
1answer
336 views

Why can Sum of Squared Differences (SSD) seen as cross-correlation?

In this slides, on page 4, the SSD can be seen as cross-correlation: http://www.lira.dist.unige.it/teaching/SINA/slides-current/pyramids.pdf http://www.cse.yorku.ca/~kosta/CompVis_Notes/ssd_cross-...
0
votes
1answer
241 views

Note segmentation from pitch values

My goal is to extract a melodic respresentation for monophonic signal like voice. I have used YIN algorithm to find the pitch of the signal. Now I want to detect notes from the pitch values (like ...
3
votes
1answer
195 views

How to prevent Octave Jumping in ACF of Speech Signal?

I'm working with speech signals and my aim is to estimate the fundamental frequency $\ F_0$ of this signal often called as "pitch". The main idea is taking small blocks of the speech signal such ...
0
votes
1answer
192 views

Pitch detection algorithms “give up” after very little

I'm sorry if pitch detection has become a stale topic here, but I'm really interested if anyone has any advice on this topic. I'm looking for the best pitch detection algorithm for stringed ...
0
votes
1answer
120 views

Implementing an offline guitar monophonic pitch detector

I am implementing an offline guitar monophonic pitch detector. I was wondering about the trade-off of the standard methods: Autocorrelation, HPS, Cepstrum, picking the peak from an STFT, the YIN ...
-1
votes
1answer
103 views

Pitch Calculation Error via Autocorrelation Method

Aim : Pitch Calculation Issue : The calculated pitch does not match the expected one. For instance, the output is approx. 'D3', however the expected output is 'C5'. Source Sound : https://...
1
vote
1answer
67 views

Finding where signal is showing some (unknown) periodicity

I have readings of the vertical displacement of someone over time, as in the picture below: At some points in time, the person will be exercising or jumping up & down, creating more or less ...
0
votes
0answers
35 views

What algorithm to use to detect musical notes of a flute?

I am trying to figure out how I can detect the pitch of 20 musical notes from a flute signal. I used the YIN algorithm, CEPSTRUM, SWIPE but they don't seem to detect but one note. Then I tried to ...