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. 11, 2016
Filed:
Jun. 29, 2012
Andrew Dow Turner, Los Angeles, CA (US);
Tomlinson Holman, Yucca Valley, CA (US);
Andrew Dow Turner, Los Angeles, CA (US);
Tomlinson Holman, Yucca Valley, CA (US);
Audyssey Laboratories, Los Angeles, CA (US);
Abstract
A spectral response shifting method allows a listener to shift a system response to match their preferences. The method includes a lookup table of coefficients for a number of Infinite Impulse Response (IIR) filter or Finite Impulse Response (FIR) filter which are selected by the listener to shift the response either toward bass or towards treble. In one embodiment, 5order IIR biquads filters are used at ½ dB increments from −6 dB to +6 dB. For example, when a listener selects the 'more treble by 1 dB' setting, a set of coefficients is loaded providing −1 dB in bass cut at the lowest frequency of the audible spectrum (20 Hz) and +1 dB of treble boost at the highest frequency of the audible spectrum (20 kHz). The frequency response at all other points is defined by interpolating between the highest frequency (20 kHz) and the lowest frequency (20 Hz).