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:
Jan. 16, 2018
Filed:
Jun. 20, 2016
Voiceage Corporation, Town of Mount Royal, CA;
Tommy Vaillancourt, Sherbrooke, CA;
Milan Jelinek, Sherbrooke, CA;
VOICEAGE CORPORATION, Town of Mount-Royal, Quebec, CA;
Abstract
The present disclosure relates to a device and method for reducing quantization noise in a sound signal contained in a time-domain excitation decoded by a time-domain decoder. A future frame time-domain excitation is evaluated based on the decoded time-domain excitation. A concatenated time-domain excitation is produced from the decoded time-domain excitation of the time-domain excitation of the future frame and is converted into a frequency-domain excitation. A weighting mask is produced for retrieving spectral information lost in the quantization noise. The frequency-domain excitation is modified to increase spectral dynamics by application of the weighting mask. The modified frequency-domain excitation is converted into a modified time-domain excitation. The latter conversion is delay-less. In an embodiment, the weighting mask may be produced using time averaging or frequency averaging or a combination of time and frequency averaging of the frequency-domain excitation. The method and device can be used for improving music content rendering of linear-prediction (LP) based codecs.