09031834 is referenced by 13 patents and cites 14 patents.

The method provides a spectral speech description to be used for synthesis of a speech utterance, where at least one spectral envelope input representation is received. In one solution the improvement is made by manipulation an extremum, i.e. a peak or a valley, in the rapidly varying component of the spectral envelope representation. The rapidly varying component of the spectral envelope representation is manipulated to sharpen and/or accentuate extrema after which it is merged back with the slowly varying component or the spectral envelope input representation to create an enhanced spectral envelope final representation. In other solutions a complex spectrum envelope final representation is created with phase information derived from one of the group delay representation of a real spectral envelope input representation corresponding to a short-time speech signal and a transformed phase component of the discrete complex frequency domain input representation corresponding to the speech utterance.

Title
Speech enhancement techniques on the power spectrum
Application Number
13/393667
Publication Number
9031834 (B2)
Application Date
September 4, 2009
Publication Date
May 12, 2015
Inventor
Johan Wouters
Cham
CH
Geert Coorman
Kuurne
BE
Agent
Daly Crowley Mofford & Durkee
Assignee
Nuance Communications
MA, US
IPC
G10L 13/033
G10L 21/003
G10L 21/0232
G10L 21/02
G10L 21/00
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