US 2019/0378532 A1 · METHOD AND APPARATUS FOR DYNAMIC MODIFYING OF THE TIMBRE OF THE VOICE BY FREQUENCY SHIFT OF THE FORMANTS OF A SPECTRAL ENVELOPE

Abstract

A method for modifying a sound signal, the method comprising: a step of obtaining time frames of the sound signal, in the frequency domain; for at least one time frame, applying a first transformation of the sound signal in the frequency domain, comprising: a step of extracting a spectral envelope of the sound signal for the at least one time frame; a step of calculating frequencies of formants of the spectral envelope; a step of modifying the spectral envelope of the sound signal, the modification comprising application of an increasing continuous transformation function of frequencies of the spectral envelope, parameterized by at least two frequencies of formants of the spectral envelope.

Claims15

Dependent claims

A method for modifying a sound signal, said method comprising:

a step of obtaining (310) time frames of the sound signal, in the frequency domain;
for at least one time frame, applying a first transformation (320a) of the sound signal in the frequency domain, comprising:
a step of extracting (330) a spectral envelope of the sound signal for said at least one time frame;
a step of calculating (340) frequencies of formants of said spectral envelope;
a step of modifying (350) the spectral envelope of the sound signal, said modification comprising application (351) of an increasing continuous transformation function of frequencies of the spectral envelope, parameterized by at least two frequencies of formants of the spectral envelope.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/485,275Filed 12 Feb 2018

Priority

FR 17 5116313 Feb 2017

Published

12 Dec 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

G10L 21/003
Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its…:…
G10L 21/0332
Details of processing therefor: involving modification of waveforms
G10L 25/18
Characterised by the type of extracted parameters: the extracted parameters being spectral information of each sub-band
G10L 25/51
Specially adapted for particular use: for comparison or discrimination

Method and apparatus for dynamic modifying of the timbre of the voice by frequency shift of the formants of a spectral envelope

Life of this patent

Method and apparatus for dynamic modifying of the timbre of the voice by frequency shift of the formants of a spectral envelope

Life of this patent

Abstract

Claims15