Questions tagged [pitch]
Pitch of an audio signal representing a musical note, measured in units of octave and relative to a pitch standard such as A440, is the base-2 logarithm of the frequency ratio of the fundamental frequency of the note to the frequency of the pitch standard.
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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 ...
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Implementation of CUSUM to segment stable parts in a pitch contour
I've got the pitch contour of a person singing several different frequencies after each other (octave errors cleaned up). I'd like to segment the stable parts from the transitionary ones (gliding up ...
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Problem using pitch shifting with TD-PSOLA and formant preservation
I tried out this implementation of TD-PSOLA (https://github.com/sannawag/TD-PSOLA) and even though I know how the algorithm works, I can't understand why I get NO audible differences in the output ...
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How to find the Pitch of a utterance using narrowband spectrogram
Can anyone tell me how to find the pitch of an utterance from it's narrow band spectrogram? I am pretty new to the speech processing domain so any help is appreciated.
P.S. I need methods to estimate ...
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Validating tapping and singing
I have a recording of someone tapping while singing and need to check that this someone is tapping the right rhythm and singing the right notes.
My intuition is to detect tapping through amplitude of ...
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Is it possible to restore audio that has been tonally modified by a phase vocoder?
My objective is to apply some process to the modified audio that allows me to obtain the original audio. I think it can be solved through machine learning techniques. I don't know if there is any ...
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1answer
58 views
How to compute key of a song?
I'm looking for a precise way to compute the key of a song. BPM would be cool too. Analog is ok. I tried to approach it from the DFT angle, but got stuck and can't really put a finger on what's the ...
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2answers
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Understanding Pitch Detection with Autocorrelation Methods
I've been reading through A Smarter Way to Find Pitch, describing its pitch detection algorithm using autocorrelation.
I've been having trouble understanding the accuracy claims. It says:
MPM runs ...
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158 views
Resampling and removing high frequency noise?
I am currently working on a simple sampler that will allow me to load in a wav file and use my MIDI keyboard to play the loaded wav sample at the frequency according to the note played.
Now I need ...
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3answers
101 views
How can I convert audio to a series of notes using pitch detection?
I have a good pitch detection system set up, and I would like to return a series of notes given an array of audio samples.
My current approach is as follows: I have a moving window across the audio ...
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Pitch detection, YIN, pYIN
So here is the "seminal" YIN paper:
Cheveigne A, Kawahara H. - YIN, a fundamental frequency estimator
for speech and music
and the new, improved probabilistic YIN:
Mauch M, Dixon S. - PYIN: A ...
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2answers
66 views
Technique to detect pitch after analysing only one pitch period?
does anyone know if there is a technic to estimate the pitch of a given signal by analysing only one pitch period.
I'm asking because I read about a program called AudioMotors.
https://lesound.io/...
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265 views
Note detection in an audio file.
I am trying to find the given note in an audio file. It has been specifically told that each file contains only one note. So i directly took fft and found the corresponding frequency and then mapped ...
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1answer
344 views
how to create a harmonic mask from fundamental frequency?
Using an algorithm that gives the fundamental frequency across time, example https://www.mathworks.com/help/audio/ref/pitch.html (or some other one?)
how would I then use that, to create a harmonic ...
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1answer
100 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://...
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1answer
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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/...
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1answer
184 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 ...
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3answers
135 views
Efficient calculation of exact frequency from a broad frequency range (1 Hz - 1000 Hz)
I have some input signal sampled at 1-10 MS/s. Let's assume that it contains one strong frequency component (with frequency anywhere in the range from 1 Hz to 1000 Hz or even higher, changing over ...
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1answer
859 views
Change pitch of a wav file without changing the Sample rate?
I'm creating a Python library I call PAL, (Python Audio Library) and I need some help. What ways are there to change the pitch of a wav file without changing the sampling rate? I have complete access ...
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1answer
231 views
Where to begin? - Multi source polyphonic pitch detection
I'm quite interested in real time pitch tracking. I have used mcleod pitch method, Yin and other methods to perform real time pitch tracking for a monophonic audio track.
I know that Polyphonic ...
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0answers
264 views
What are F0 counters in Speech signals? What is represented by F0?
I can't find any dedicated definition for Frequency F0 counters. Can anyone tell me what does F0 exactly mean, I am confused about that.
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1answer
188 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 ...
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2answers
56 views
What should I do with FFT result array from microphone input? [duplicate]
I currently want to create a small pitch detector and I have to say that I am very new in this topic of signal processing.
At the moment I implemented the FFt algorithm and I got an array of window ...
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2answers
186 views
Pitch perception - Why does our ear not directly detect the missing fundamental frequency?
My motivation for this question is related to biological phenomenon of our inner ear, so I initially posted in the biology community, but I suspect the answer has a DSP explanation, so I figured this ...
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2answers
137 views
Pitch detection of two following music notes (C0 and C0#)
Hi signal processing community,
currently I am working on a pitch detection tool which should work on audio input files (or later also instrumental or voice from microphone) to say which music note ...
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2answers
148 views
Pitch detection to find music notes (from voice)
Hi signal processing community,
currently I am searching a topic for my master thesis in computer science and since I am a very good singer I want to do something with music.
I thought about a topic ...
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152 views
How do I deepen my voice (I'm a female) to sound like a man in a video for a school project? [closed]
Some extra info. that I think might help or make things clearer:
The video has several other people in it also talking (I don't want
to change their voices).
I have some experience in editing ...
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2answers
66 views
Pitch fluctuates unexpectedly in simple sine function
I wrote a very basic C program to play a sine of a user-specified frequency. In the interest of portability, I have it spit values directly to stdout, so hopefully you can reproduce my problem on your ...
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3answers
362 views
Why is pitch detection necessary in pitch correction?
I am trying to understand the process of changing the pitch of a signal. After performing the FFT on a windowed signal, we have the frequency information for the signal. Why can we not simply change ...
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3answers
5k views
How to change speed of audio samples without changing pitch? [duplicate]
This question may be more appropriate on music stack exchange but since sound is a branch of physics and this is more of a technical question relating to sound waves than a musical question I asked it ...
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1answer
1k views
Phase vocoder, pitch shift in MATLAB and C
I'm trying to make a Phase Vocoder in MATLAB. But I'm stuck with the calculations on changing the pitch. I browsed loads of website and I simply do not understand what to do.
Currently I have in my ...
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1answer
235 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 ...
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651 views
Real-time FFT Pitch shifting in c# [closed]
I'm using Math.net and Bass.Net to write FX effects for guitars. I'm currently stuck on the the pitch shifter. I have to implement a custom DSP callback function which provides the guitar PCM data and ...
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1answer
427 views
Harmonic Product Spectrum algorithm. I dont understand one step
I was looking some Harmonic Product Spectrum algorithm examples and I came up with this:
...
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2answers
194 views
How can I start learning about pitch detection?
readers.
I'm working on a project where my goal is to implement a pitch-detection algorithm (PDA) in a piece of open-source software.
I have very little knowledge of pitch detection at the moment ...
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1answer
46 views
Algorithm to identify pitch-shifted recordings?
new to this whole DSP thing. Two related questions:
Does there exist an algorithm or classifier that, when given two sound files, would be able to tell me if one is a pitch-shifted version of the ...
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1answer
152 views
Using NMF for guitar pitch detection using fixed pitch template
I've seen this guide showing a basic NMF of a spectrogram.
My aim is detect guitar pitch from the decomposition. I want to do this by explicitly create a fixed template of pitches and construct the W ...
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1answer
1k views
Are there any signal processing libraries that implement TD-PSOLA?
For such a popular and old algorithm, I've had surprisingly little luck finding implementations. I've got it working in MATLAB, but am curious if any other languages have libraries containing it (...
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1answer
58 views
Calculation of the salience function (Klapuri 2006)
I am reading this paper here and I wanted to check my understanding regarding the salience function:
$$
\hat{s}(\tau)=\sum_{m=1}^M g(\tau, m) \max_{k\in \kappa_{\tau, m}}\lvert Y(k)\rvert
$$
Where ...
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2answers
170 views
What Is the Meaning of the Term "Frequency Response'' When We Design a Pitch Detector
This is from Klapuri 2003. What is the "frequency response" and why do we model is as multiplied with the vibrating system we want to get the frequency from?
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2answers
865 views
Pitch salience definition/references
What is the pitch salience? I see it a lot when looking for papers about multiple pitch detection but haven't found a proper definition of it.
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1answer
265 views
Half of fundamental frequency in Fourier transform
I understand why there are peaks in integer multiples of the fundamental in the Fourier transform. But why is there often a peak in half the fundamental?
I am testing for the guitar specifically. I ...
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1answer
119 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 ...
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1answer
2k views
How to extract prosodic cues from a wav file using Python
How do I extract the following features as from wav files in Python -
Voicing rate (Voice rate) - frequency of phonemes while speaking, and represents the pace of a conversation
Number of ...
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3answers
568 views
Guitar fundamental frequency vs pitch
When a note is played on the guitar, is the fundamental frequency always the strongest one or could a harmonic be the strongest one (in terms of amplitude). When could that happen? Also, when playing ...
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3answers
1k views
Guitar pitch detection with autocorrelation
This link provides code for an autocorrelation-based pitch detection algorithm but says:
Cons: Not as accurate, doesn't work for inharmonic things like musical instruments, this implementation has ...
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2answers
179 views
Is the STFT a good solution to guitar monophonic pitch detection?
Let’s assume that the audio input will be:
Guitar audio
Monophonic audio
Is the STFT overkill? Is it enough to produce a time-frequency plot and from there find the notes played at each instance? ...
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1answer
422 views
frequency translation or pitch shifting through linear interpolation in frequency domain
I want to perform pitch shifting with the method described in NEW PHASE-VOCODER TECHNIQUES FOR PITCH-SHIFTING, HARMONIZING AND OTHER EXOTIC EFFECTS. Basically, it involves:
Locate the spectral peaks ...
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Another pitch detection problem
I'm a french student and I have to make a scientific project in group, so we decided to work on how automatically turn sheets music when a musician reaches the end of the page. For that I'm working on ...
