6 votes

Why were the formants of high and back vowels difficult to obtain? And why not anymore?

Is point 2 above still true? Not any more, thankfully! If not, why was it so difficult? Back when this paper was written, spectrograms of sound were right on the cutting edge of technology. They ...
Draconis's user avatar
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6 votes
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Where can I find a vowel analyzer app or program?

A late answer but. Here is a real time viewer for vowels. The VowelWorm can plot vowel features on a canvas in real-time. It is based on the work done at the Department of Computational Perception ...
Skins I's user avatar
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5 votes
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Will the pitch of a vowel influence its formant values?

F0 does not affect formant frequency, for a slightly obscure reason. When you look at a spectral cross section, you see the amplitudes of individual harmonics (determined via a Fourier transform). The ...
user6726's user avatar
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3 votes
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What is the maximum possible number of formants?

The theoretical answer is that there is no absolute upper limit, and the non-theoretical impractical answer is 10. The practical answer is 5-6, depending on why you really care. You describe your ...
user6726's user avatar
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3 votes
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What is the difference between a formant and resonant frequency?

Formant is a term used in speech research, and was coined 125 years ago by Ludimar Hermann (see this account), whereas resonance in the field of physics dates back to Pythagoras (the Latin term is a ...
user6726's user avatar
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3 votes

Will the pitch of a vowel influence its formant values?

I'm the OP and after four years I'm sure I have enough knowledge to answer the question in terms of acoustics as well as signal processing. My original question is a misunderstanding of the formant ...
C.K.'s user avatar
  • 301
3 votes

Perceptual salience of two consecutive syllables

We hear proportions of frequencies, not absolute differences. In the first case, the proportion 300Hz/200Hz = 1.5; in the second case the proportion 400Hz/300Hz = 1.33. In musical terms, the first ...
Sir Cornflakes's user avatar
3 votes

What is the first formant (F1) dependent on in reference to the vocal tract?

Johnson in Acoustic and auditory phonetics addresses this; the nomogram here on slide 7 graphs the problem. essentially, the answer is "it's complicated". You compute the resonance of each tube based ...
user6726's user avatar
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2 votes
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Why is the second formant plotted as F2-F1 in vowel space plots?

It's done to make the plot resemble the traditional articulatory plot of vowels by height and backness of the tongue.
Greg Lee's user avatar
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2 votes

Formants - beyond F2

I refer you to this answer about a similar question for F1, i..e "it's complicated". F3 is not well understood, although it plays a role in distinguishing American English r. F4 is an engineering ...
user6726's user avatar
  • 83k
2 votes

Possible to get approximation of formants by "subtracting" harmonic overtones (assuming an expected ideal amplitude decrease of harmonics)?

Simple models like sawtooth or triangle are reasonable first stabs at the glottal wave function, but aren't exactly right for human speech. You may (eventually) want to look at distinctive phonation ...
user6726's user avatar
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2 votes
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Possible to get approximation of formants by "subtracting" harmonic overtones (assuming an expected ideal amplitude decrease of harmonics)?

Are you talking about something like this? The blue line here is the Fourier transform of the signal, showing the harmonics, and the red line is the factor by which it differs from a plain sawtooth ...
Draconis's user avatar
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2 votes
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Unmoving F1 / formant below F1?

This is H0, or, the fundamental. Looking at a spectral slice (at various positions) and comparing the computed F0, you can see that this happens at about 230 Hz. The prominence of the fundamental is a ...
user6726's user avatar
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1 vote

All vocal formants in order of frequency?

Virtually any speech acoustics program is able to measure frequency. Formants are a specific kind of frequency measure – any sound can have a number of computable formants. When speaking of vowels, we ...
user6726's user avatar
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1 vote

Is there good software for measuring vowel formants?

I don't know if this actually works, but it is reported that on some devices, you just have to "turn Linux on" since it is already installed. With that, you can install Praat.
user6726's user avatar
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1 vote

How to find F0, F1, F2,

In the LPC spectrum in C you are looking for the first 3 peaks, which look to be about at 750, 1800 and 3000. The corresponding DFT spectrum in D gives you those same peaks (though the computed ...
user6726's user avatar
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1 vote

Displaying formants in real time

Late to the party, but I just found some tools that can do this. VowelWorm: https://github.com/BYU-ODH/apeworm demo: https://byu-odh.github.io/apeworm/examples/sources.html (need an older browser to ...
Betty's user avatar
  • 111
1 vote
Accepted

Displaying formants in real time

Praat can do the exact job. Dotted red lines represent formants, but they are not in real time. Here is the link if you want to download it: http://www.fon.hum.uva.nl/praat/
Dallak's user avatar
  • 64
1 vote
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Interpreting formant intensity

One factor influencing intensity is subglottal pressure, which is immaterial at the segmental level (you can say a word or phrase loudly that way, but you can't limit the increased loudness to a ...
user6726's user avatar
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1 vote
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Learning control over formants and sounds energy distributions

I suggest the summary in this Q&A as a starting point. One thing to pay attention to is that formants are also influenced by what you do with your lips, larynx (if you lower vs. raise it) and ...
user6726's user avatar
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