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. 20, 2020
Filed:
Dec. 22, 2016
Applicant:
Malcolm Law, West Sussex, GB;
Inventor:
Malcolm Law, West Sussex, GB;
Assignee:
MQA Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/018 (2013.01); G10L 19/00 (2013.01); G10L 19/032 (2013.01);
U.S. Cl.
CPC ...
G10L 19/018 (2013.01); G10L 19/0017 (2013.01); G10L 19/032 (2013.01);
Abstract
Methods and devices are described for losslessly watermarking an audio signal by performing a noise shaped quantisation and clipping the output from the noise shaped quantisation to bounds computed by a pair of quantised linear functions with gradient 0.5 of the input to the noise shaped quantisation. Corresponding methods and devices are also described for inverting the process to recover an exact replica of the original audio signal.