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:
Aug. 25, 2026
Filed:
Jan. 27, 2023
Voiceage Corporation, Town of Mount Royal, CA;
Vladimir Malenovsky, Brno, CZ;
Milan Jelinek, Sherbrooke, CA;
VOICEAGE CORPORATION, Town of Mount Royal, CA;
Abstract
A method for time-domain bandwidth expansion of an excitation signal during decoding of a cross-talk sound signal, comprises decoding a high-band mixing factor received in a bitstream, and mixing a low-band excitation signal and a random noise excitation signal using the high-band mixing factor to produce the time-domain expanded excitation signal. A method for time-domain bandwidth expansion of an excitation signal during encoding of a cross-talk sound signal, comprises calculating a high-band residual signal using the sound signal and a temporal envelope of the high-band residual signal, calculating a high-band voicing factor based on the temporal envelope of the high-band residual signal, calculating a high-band mixing factor usable for mixing a low-band excitation signal and a random noise excitation signal to produce the time-domain expanded excitation signal, and estimating gain/shape parameters using the high-band voicing factor.