The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2003
Filed:
Jan. 07, 2000
Antti Vähätalo, Tampere, FI;
Erkki Paajanen, Tampere, FI;
Nokia Mobile Phones Ltd., Espoo, FI;
Abstract
A method which comprises forming a first noise reduction frame ( ) containing speech samples; which is windowed by a first window function. For the windowed frame, noise reduction is performed for producing a second noise reduction frame ( ). A speech coding frame ( ) to be formed comprises noise-reduced samples of at least two successive second noise reduction frames ( ), partly summed with one another. On the basis of said speech coding frame ( ), a set of speech coding parameters p are determined. A lookahead part ( ) of the speech coding frame is at least partly formed of a first slope ( ), the first slope ( ) comprising a set of most recent noise-reduced samples of the second noise reduction frame, not summed with the samples of any other second noise reduction frame. The method reduces the delay caused by speech coding and noise reduction.