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:
Oct. 18, 2011
Filed:
Aug. 13, 2007
Paris Smaragdis, Brookline, MA (US);
Bhiksha R. Ramakrishnan, Watertown, MA (US);
Paris Smaragdis, Brookline, MA (US);
Bhiksha R. Ramakrishnan, Watertown, MA (US);
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
A method expands a bandwidth of an audio signal by determining a magnitude time-frequency representation |G(ω, t) for example audio signals g(t). A set of frequency marginal probabilities P(ω|z)are estimated from |G(ω, t)|, and a magnitude time-frequency representation |X(ω, t)| is determined from an input signal audio signal x(t). Probabilities P(z), P(z) and P(t|z) are determined using P(ω|z)|X(ω, t)|. |Ŷ(ω, t)| is reconstructed according to PP(z)P(ω|z)P(t|z), and |Ŷ(ω, t)| is transformed to a time domain to obtain a high-quality output audio signal ŷ(t) corresponding to the input audio signal x(t).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile