formant-analyzer

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There is an algorithm at https://www.mathworks.com/help/signal/ug/formant-estimation-with-lpc-coefficients.html Check it out and implement it quickly to see if any good!

fulldecent

Some original research to do. Make a model for vowel utterances which expects: - Three formants in 500 Hz - 3000 Hz range - Little change in formants for a...

fulldecent

Read Vallabha et al

1

Read http://www.rle.mit.edu/soundtosense/conference/pdfs/fulltext/Saturday%20Posters/SB-Vallabha-STS.pdf And implement their algorithm or summarize it and cite Also consider http://kom.aau.dk/group/04gr742/pdf/LPC_worksheet.pdf

fulldecent

https://developer.apple.com/documentation/Charts

fulldecent

The scale at the bottom skips from 2khz to 4khz

em3ry

Add Chinese vowel overlay option

1

http://en.wikipedia.org/wiki/Chinese_vowel_diagram

fulldecent

Redraw vowel plot using native graphics primitives

7

Currently the vowel plot is drawn using a rendered picture. This can be improved to use actual drawing primitives.

fulldecent

Hello Greg! Thanks for sharing. I'm glad to see your interest here and further research into this project. As for the tooling, I believe Formant Analyzer does what you are...

fulldecent

On the plot form, add "donate audio sample". It uploads to a server (where?) and then opens a google form to add information to that sample: - Speaker demographics -...

fulldecent

Switch App Store app to free app

1

Use this approach https://stackoverflow.com/a/19391432/300224 And have an in-app upgrade for some specific feature. - Choose that feature - Implement IAP - Make rest of app free

fulldecent