# US 12,192,716 B2 · Method and associated device for transforming characteristics of an audio signal

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- Number: US 12,192,716 B2
- Document ID: US12192716B2
- Status: Granted
- Kind: B2
- Application number: 17/791,192
- Filed: 2021-01-05
- Published: 2023-03-02
- Granted: 2025-01-07
- Earliest claimed: 2020-01-06
- Assignees: Innovation Electro Acoustique
- Applicants: Innovation Electro Acoustique
- Inventors: Jefferson Williams Torno; Julien Pierre Michel Santini
- Web page: https://patentgrep.com/patent/US12192716B2

## CPC

- H04R 3/04: for correcting frequency response
- H04R 1/28: Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means {(combinations of transducers with horns, i.e. front-loaded horns H04R1/30)}
- H04S 7/301: {Automatic calibration of stereophonic sound system, e.g. with test microphone}
- H04S 2400/09: Electronic reduction of distortion of stereophonic sound systems
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- H04S: STEREOPHONIC SYSTEMS

## Abstract

A method and an associated device for the combined conversion of multiple characteristics of an audio signal are disclosed. The changes allow the signal to be typed on the basis of a profile selected by a control unit. The method and the device are particularly intended for the field of loudspeakers.

## Claims

### Claim 1

A method for transforming an audio signal for an electro-acoustic transducer, comprising: wherein said audio signal is modified in a combined manner using a plurality of audio signal characteristics as a function of a typical profile selected by a control module, to provide specific characteristics to the audio signal, said audio signal characteristics being selected from the list including: gain, phase, time, distortion, bandwidth, bandwidth distribution per speaker, dynamics compression/expansion, directivity, sampling, absolute phase corresponding to the electrical polarity of a group of loudspeakers at the impulse response, displacement of the reference point where all frequencies are in phase, and wherein the control module automatically adapts the selection of a typical profile as a function of the information of the determined musical style of a music track, the selected typical profile comprising settings of the electro-acoustic transducer relative to the audio signal characteristics.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the transformation of the signal is carried out in one or more steps consisting of at least one corrective action to linearize the signal in order to match the recording data, and a modification action to type the signal as a function of the selected type profile.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the transformation of the signal is carried out according to a digital method using a processor.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the transformation of the signal is carried out according to an analog method using electrical and/or electronic components.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the transformation of the signal is carried out according to one or more mechanical means using tuned structures, acoustic lenses and/or a transformation of the geometric characteristics of the device.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the control module is manually operated by the user.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the control module automatically adapts as a function of information contained on a remote service for recognizing the signal and identifying a typical profile.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the control module automatically adapts as a function of user preferences identified by the device.

### Claim 9

A device for transforming an audio signal for an acoustic transducer, comprising: wherein the device is configured to modify said signal in a combined manner using a plurality of signal characteristics as a function of a typical profile selected by a control module, to give specific characteristics to the audio signal, said audio signal characteristics being chosen from the list comprising: gain, phase, time, distortion, bandwidth, bandwidth distribution per speaker, dynamics compression/expansion, directivity, sampling, absolute phase corresponding to the electrical polarity of a group of speakers at the impulse response, displacement of the reference point where all frequencies are in phase, and wherein the control module automatically adapts the selection of a typical profile as a function of the information of the determined musical style of a music track, the selected typical profile comprising settings of the electro-acoustic transducer relative to the audio signal characteristics.