Sine wave speech
[synth music Sine wave speech is a research technique in which a human voice is reduced to 3 or 4 time-varying sinusoids. It is unintelligble when heard without prompting, but with prompting it is clearly distinguishable. A nice explanation (with examples) can be found on Matt Davis (Cambridge), and Robert Remez (Barnard) has a very artistic example setting a Robert Frost poem to sine wave, with experiments on note duration and pitch quantization. Art project: You could take Johnny Cash reading the Bible and turn this into a four voice analog oscillator…
Notes
- I suspect one can use AudioLocalMeasurements to extract what is needed, but I don’t know the right terminology.
- This script for PRAAT gives some ideas about filtering and formants
- This page with matlab code says about LPC pole positions being an effective way to extract the parameters. I guess we can dig into the matlab to figure it out