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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Sample accurate real-time pitch shifting algorithm
I am trying to implement a phase vocoder overlap-add pitch shifting algorithm for part of a plugin I'm writing. I have done this kind of thing offline before and I understand the theory, but this is ...
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Quantifying the energy of a voiced frame
What should the energy, pitch frequency, and zero crossing rate of a voice/unvoiced/silence frame in signal be?
My professor said that it is experimental, but I do not have any idea what the factors ...
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Getting the average pitch of a wave in C#
I want to separate out the components that I need to evaluate the pronunciation of a user, so I am dealing with the energy/stress/volume and intonation or pitch.
Focusing first on the pitch, is ...
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recognizing frames as voiced/unvoiced/silence [duplicate]
i have to implement a function in matlab,for labeling silenced,voiced and unvoiced frames in signal.
I mean i want to specify each frame as a voiced or unvoiced or silenced frame by using
pitch ...
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Synthesizing harmonic tones with Karplus Strong
I'm building my own MIDI synth.
I have to create a decent sounding tone for every note on the piano keyboard (A-1 through C7, or MIDI 21 through 21+88=109)
I've been using a basic ring resonator, ...
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Polyphonic detection/Mulit-pitch detection/Chord recognition
I build application witch will be transform piano sound to musical notes. I found some pitch detection algorithms with implementations (mainly based on autocorrelation or fft), but chord recognition, ...
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How do you choose a size for a windowing function in FFT?
How does one choose the proper windowing function to apply in an FFT? What are the benefits of larger sizes and smaller ones? Which would be the best for pitch estimation? Also which window function ...
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Pitch detection when successive notes are the same
I want to program a microcontroller in C but I am asking about the theoretical aspect of it. I think I've got an idea what I am going to do but there is one thing I can't quite get. To begin with, I ...
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Advantages and disadvantages of Hilbert-Huang Transform versus Fast Fourier Transform? [closed]
Which one is better for frequency detection? In what circumstances? Advantages and disadvantages of both? Which would be better for a Voice Activation Detection algorithm? Which would be better for an ...
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What is the "pitch marker" in the LP-PSOLA algorithm?
The LP-PSOLAR algorithm uses a the Linear Prediciton Coding (LPC) to calculate an error vector from a signal. This error vector is used to calculate the pitch markers. What do these pitch markers ...
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In Search of Voice Activity Detection Algorithms - What happens to the frequency or pitch or speech features as speaker moves away from microphone
Actually i am in search of a Voice Activity Detection Algorithm which could distinguish between voice and non-voice
Roughly speaking it must not detect even a bullet sound,even a foot stepping and ...
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Why do envelope extraction before pitch detection?
I am referring to this report on pitch estimation.
The author does envelope extraction using Hilbert transform before applying AMDF.
What is the advantage of doing that?
Is speech a narrowband or ...
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Note Recognition Software
I'm wondering if anyone knows of any open source solutions to note recognition. I'm planning on building a program for online sheet music, which recognizes your notes, and tries to tell you what you ...
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how can I calculate pitch deviation in a large collection of audio files?
I am making a software model of an existing digital synthesiser and I have made audio recordings of single notes with particular parameter settings. I made a program in C++ which sends a MIDI sysex ...
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Two generated tones creates a side tone - how to avoid the side tone
I'm trying to create two tones at different frequencies. So I have one tone at 15000 Hz and one at 15400 Hz using Audacity. The problem i'm running into is there is a third tone created at a much ...
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chord recogination by multiple fundamental frequency estimation
I'm gonna implement multiple frequency estimation by summing harmonics amplitude!
I've read Anssi Klapuri paper but i can't understand him.
first of all he said spectral whitening i did it by i don't ...
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Measure of harmonicity in a time-series
I'm analyzing speech signal for identifying voiced and unvoiced regions. Voiced regions are supposed to have a "pitch", which can be estimated using auto-correlation function (ACF). Basically, one ...
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What is the uHz-rotator algorithm?
According to this page, the Baudline software tool implements
...the uHz-rotator algorithm that operates in the complex domain to
calculate an extremely accurate estimate of the frequency.
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generating ultrasonic sound in matlab
I am working for my class project on making animal repellent , I need to know how I could go about taking a normal audio file and shift its frequency/Pitch very high to make it an ultrasonic sound.
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Melodic or tonal pitch contour tracking?
What algorithms or methods can be used for the tracking of audio pitch contours? (Such as in musical vibrato and glissando, or for tonal vowels in languages such as Chinese?). Will a PLL work even ...
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How does Songify work?
Does anyone know how does the "Songify" app algorithm work?
There are 2 inputs:
speech (or amateur singing), and
underlying music.
Somehow the speech is altered and mixed into the music. Which DSP ...
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pitch vs playback rate
Let's say I have an audio sample, whose pitch is known to be C4 (don't wanna go in detail here, let's say I just sampled a tuned piano playing the C4 key).
The rules of the game are: I can only ...
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Piano pitch detection
I'm working on a piano tuning program and part of it requires real-time pitch detection. Here is the scheme I have so far which works to some degree but could probably use some refinement.
I'm ...
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Can you increase frequency resolution of FFT without increasing window size?
I'd like to use STFT for multipitch analysis.
I realise detecting the partials existing in the signal is just the beginning.
Still I have problem with it.
Let's say I have signal sampled with 'CD' ...
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Binary classifier for a small range of the audio spectrum
I am trying to detect a pitch in a narrow range of the audio spectrum with minimal samples. This corresponds to the rattling of certain mechanical systems. For example, the hum of an engine.
To do ...
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Pitch detection algorithm for minsample size
I am looking for a pitch detection algorithm that uses the least number of samples.
I don't care about the processing time.
I hope to use this on audio signals.
I have tried using the one at the ...
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differences in fundamental frequency/pitch between music and speech
I am developping a program, that extracts very expressive frames from a video (meaning: frames, which could summarize a video) for a university seminar. One of my ideas was, to analyze the audio data (...
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Extraction of non-sinusiodal repetition rates
I have an auto-correlation function that was generated from a signal, and I am trying to extract its 'repetition rate' in order to calculate the dominant frequency of the pulse, but I am not exactly ...
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Real-Time Human Pitch Detection
I'm trying to implement a singing game that will analise raw mic input and tell the player how good is he singing. That needs to be done in real-time.
I've come across a lot of threads asking the ...
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Converting a pitch bend (MIDI) value to a "normal" pitch value
I am trying an offline LPC analysis and synthesis using the rt_lpc (real-time LPC) implementation as given here. There are some functions within the program that can be used for an offline LPC ...
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Discrete Fourier transform - finding the fundamental quickly?
First, I appologize because I'm a software developper and it's been a very long time I didn't dive into pure mathematics, so my question might seem dumb. I hope not.
The context is pitch recognition ...
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Pitch Detection with the Histogram Frequencies Algorithm
i would like to ask...
is there such a thing such as "Pitch Detection with the Histogram Frequencies Algorithm" ?
Does such a thing exist or is it the harmonic product spectrum algorithm or cepstral ...
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Harmonic Product Spectrum limitations in pitch detection
I've made a pitch detection algorithm using HPS and I'm facing a problem. I'm a beginner with signal processing and this site helped me before, so I though I should ask.
For higher pitches ( ...
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Finding the pitch value of a note
I am trying to implement a karaoke scoring algorithm and, for a particular song, have the note information (done by a professional) that indicates what note occurs in which part of the lyric.
When ...
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Finding pitch from a wideband spectrogram
We can use the narrowband spectrogram for finding the pitch of an utterance. But is it possible to find the pitch using the wideband spectrogram? If so, how would that be done?
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