US 2026/0197583 A1 · EQUALIZER CONTROL

Abstract

A method of controlling an audio equalizer, EQ, arranged to process an audio stream is presented. The method comprises obtaining a number of EQ control indicators (i1, . . . , in) for control of the audio EQ, each EQ control indicator (i1, . . . , in) comprising a frequency and a gain. The method further comprises curve fitting between the EQ control indicators (i1, . . . , in), thereby providing a polynomial EQ function (p) describing a preferred gain (G) versus frequency (f) behavior of the audio EQ, and determining a number of EQ control parameters (c1, . . . , cm) based on the polynomial EQ function (p). Each EQ control parameter (c1, . . . , cm) comprises a frequency and a gain, and wherein the number of EQ control indicators (i1, . . . , in) is at least two, and the number of EQ control parameters (c1, . . . , cm) is greater than the number of EQ control indicators (i1, . . . , in). The method further comprises providing the EQ control parameters (c1, . . . , cn) for control of the audio EQ.

Claims21

Dependent claims

A method of controlling an audio equalizer, EQ, arranged to process an audio stream, the method comprising:

obtaining a number (n) of EQ control indicators (i1, . . . , in) for control of the audio EQ, each EQ control indicator (i1, . . . , in) comprising a frequency (f) and a gain (G),
curve fitting between the EQ control indicators (i1, . . . , in), thereby providing a polynomial EQ function (p) describing a preferred gain (G) versus frequency (f) behavior of the audio EQ,
obtaining a tilt indicator (T) indicating an additional linear gain inclination across the polynomial EQ function (p), and applying the tilt indicator (T) to the polynomial EQ function (p),
determining a number (m) of EQ control parameters (c1, . . . , cm) based on the polynomial EQ function (p), wherein each EQ control parameter (c1, . . . , cm) comprises a frequency (f) and a gain (G), and wherein the number (n) of EQ control indicators (i1, . . . , in) is at least two, and the number (m) of EQ control parameters (c1, . . . , cm) is greater than the number (n) of EQ control indicators (i1, . . . , in),
providing the EQ control parameters (c1, . . . , cn) for control of the audio EQ.

2 more elements

A processor circuit operatively connected to an audio EQ arranged to process an audio stream, the processor circuit is configured to cause:

obtainment of a number (n) of EQ control indicators (i1, . . . , in) for control of the audio EQ, each EQ control indicator (i1, . . . , in) comprising a frequency (f) and a gain (G),
curve fitting between the EQ control indicators (i1, . . . , in), thereby causing provisioning of a polynomial EQ function (p) describing a preferred gain (G) versus frequency (f) behavior of the audio EQ,
obtainment of a tilt indicator (T) indicating an additional linear gain inclination across the polynomial EQ function (p), and application of the tilt indicator (T) to the polynomial EQ function (p),
determining of a number (m) of EQ control parameters (c1, . . . , cm) based on the polynomial EQ function (p), wherein each EQ control parameter (c1, . . . , cm) comprises a frequency (f) and a gain (G), the number (n) of EQ control indicators (i1, . . . , in) is at least two, and the number (m) of EQ control parameters (c1, . . . , cm) is greater than the number (n) of EQ control indicators (i1, . . . , in),
provisioning of the EQ control parameters (c1, . . . , cm) for control of the audio EQ.

2 more elements

Dependencies are inferred from the claim text.

Equalizer control

Life of this patent

Equalizer control

Life of this patent

Abstract

Claims21