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:
Jun. 02, 2015
Filed:
Aug. 28, 2012
VU Hoang CO Thuy, Paris, FR;
Benoit Pochon, Paris, FR;
Vu Hoang Co Thuy, Paris, FR;
Benoit Pochon, Paris, FR;
PARROT, Paris, FR;
Abstract
The method comprises the steps of: a) converting the digital audio signal (PCM) into a voltage signal (V); b) first lowshelf filtering of fixed gain (G); c) calculating a value of excursion (x) of the loudspeaker; d) comparing the excursion with a maximum value and calculating a first gain of possible attenuation (G); e) second lowshelf filtering of gain (G+G) taking into account the first gain of possible attenuation; g) comparing with the maximum saturation or clipping voltage (v) and calculating a second gain of possible attenuation (G); h) third lowshelf filtering gain (G+G+G) taking into account the first and/or second gains of possible attenuation; i) comparing with the maximum saturation or clipping voltage (v) and applying a gain of possible overall attenuation (G); j) optionally compensating for the nonlinearities of the loudspeaker response; and k) reversely converting the signal (V) into a digital audio signal (S) without dimension, for later amplification.