# US 11,115,768 B2 · Binaural dialogue enhancement

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- Number: US 11,115,768 B2
- Document ID: US11115768B2
- Status: Granted
- Kind: B2
- Application number: 16/915,670
- Filed: 2020-06-29
- Published: 2020-10-15
- Granted: 2021-09-07
- Earliest claimed: 2016-01-29
- Assignees: Dolby Laboratories Licensing Corporation; Dolby International AB
- Applicants: Dolby Laboratories Licensing Corporation; Dolby International AB
- Inventors: Leif Jonas Samuelsson; Dirk Jeroen Breebaart; David Matthew Cooper; Jeroen Koppens
- Web page: https://patentgrep.com/patent/US11115768B2

## CPC

- H04S 1/002: {Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution (control circuits for electronic adaptation of the sound field H04S7/30)}
- H04R 5/04: Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)}
- H04S 3/00: Systems employing more than two channels, e.g. quadraphonic (H04S5/00, H04S7/00 take precedence)
- H04S 7/303: {Tracking of listener position or orientation}
- H04S 3/008: {in which the audio signals are in digital form, i.e. employing more than two discrete digital channels (data reduction aspects thereof based on psychoacoustics G10L19/02)}
- H04S 3/02: of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
- H04S 2420/01: Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
- H04S 2420/03: Application of parametric coding in stereophonic audio systems
- H04S: STEREOPHONIC 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)

## Abstract

Methods for dialogue enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation, applying said set of dialogue estimation parameters to said first audio signal presentation, to form a dialogue presentation of the dialogue components; and combining the dialogue presentation with said second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.

## Claims

### Claim 1

A method of dialogue enhancing audio content having one or more audio components, the method comprising:
receiving a first audio signal presentation of the audio components designated for reproduction on a first audio reproduction system;
receiving a set of presentation transform parameters configured to enable transformation of the first audio signal presentation into a second audio signal presentation suitable for reproduction on a second audio reproduction system;
receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation;
applying the set of presentation transform parameters to the first audio signal presentation to form the second audio signal presentation;
applying the set of dialogue estimation parameters to the first audio signal presentation to form a dialogue presentation of the dialogue components; and
combining the dialogue presentation with the second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system,
wherein only one of the first audio signal presentation and the second audio signal presentation is a binaural audio signal presentation.

### Claim 2 (depends on 1)

The method of claim 1, wherein each of the one or more audio components is associated with respective spatial information.

### Claim 3 (depends on 1)

The method of claim 1, wherein the dialogue estimation parameters are configured to also perform a presentation transform, so that the dialogue presentation corresponds to the second audio signal presentation.

### Claim 4

A system comprising:
one or more processors; and
a non-transitory computer readable medium storing instructions that, upon execution by the one or more processors, cause the one or more processors to perform operations of dialogue enhancing audio content having one or more audio components, the operations comprising:
receiving a first audio signal presentation of the audio components designated for reproduction on a first audio reproduction system;
receiving a set of presentation transform parameters configured to enable transformation of the first audio signal presentation into a second audio signal presentation suitable for reproduction on a second audio reproduction system;
receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation;
applying the set of presentation transform parameters to the first audio signal presentation to form the second audio signal presentation;
applying the set of dialogue estimation parameters to the first audio signal presentation to form a dialogue presentation of the dialogue components; and
combining the dialogue presentation with the second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system,
wherein only one of the first audio signal presentation and the second audio signal presentation is a binaural audio signal presentation.

### Claim 5 (depends on 4)

The system of claim 4, wherein each of the one or more audio components is associated with respective spatial information.

### Claim 6 (depends on 4)

The system of claim 4, wherein the dialogue estimation parameters are configured to also perform a presentation transform, so that the dialogue presentation corresponds to the second audio signal presentation.

### Claim 7

A non-transitory computer readable medium storing instructions that, upon execution by one or more processors, cause the one or more processors to perform operations of dialogue enhancing audio content having one or more audio components, the operations comprising:
receiving a first audio signal presentation of the audio components designated for reproduction on a first audio reproduction system;
receiving a set of presentation transform parameters configured to enable transformation of the first audio signal presentation into a second audio signal presentation suitable for reproduction on a second audio reproduction system;
receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation;
applying the set of presentation transform parameters to the first audio signal presentation to form the second audio signal presentation;
applying the set of dialogue estimation parameters to the first audio signal presentation to form a dialogue presentation of the dialogue components; and
combining the dialogue presentation with the second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system,
wherein only one of the first audio signal presentation and the second audio signal presentation is a binaural audio signal presentation.

### Claim 8 (depends on 7)

The non-transitory computer readable medium of claim 7, wherein each of the one or more audio components is associated with respective spatial information.

### Claim 9 (depends on 7)

The non-transitory computer readable medium of claim 7, wherein the dialogue estimation parameters are configured to also perform a presentation transform, so that the dialogue presentation corresponds to the second audio signal presentation.