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:
Nov. 05, 2019
Filed:
Nov. 16, 2017
Voiceage Corporation, Town of Mount Royal, CA;
Redwan Salami, Saint-Laurent, CA;
Vaclav Eksler, Sherbrooke, CA;
VoiceAge EVS LLC, Newport Beach, CA (US);
Abstract
Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate Sto a sampling rate S. A power spectrum of a LP synthesis filter is computed, at the sampling rate S, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate Sto the sampling rate S. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S. The autocorrelations are used to compute the LP filter parameters at the sampling rate S