US 10,721,564 Subband spatial and crosstalk cancellation for audio reporoduction
4 defendants · 6 suits · updated October 6, 2026
Also cited as U.S. Patent No. 10,721,564 · US10721564B2 · US 10,721,564 B2 · 10721564 · the '564 patent
BOOMCLOUD 360, INC. has filed 6 patent-infringement suits on US 10,721,564, "Subband spatial and crosstalk cancellation for audio reporoduction" since June 17, 2026, 3 of them in the E.D. Tex., against 4 distinct defendants including BEST BUY CO., INC., TARGET CORPORATION, INC and Walmart Inc. The patent was granted July 21, 2020 on a priority date of January 18, 2016. Its abstract opens: "Embodiments herein are primarily described in the context of a system, a method, and a non-transitory computer readable medium for producing a sound with enhanced spatial detectability and reduced crosstalk interference." The examiner cited 3 references during prosecution.
- Assignee
- Boomcloud 360 Inc
- Priority date
- January 18, 2016
- Granted
- July 21, 2020
- Expires
- January 18, 2036
- Status
- Active
- Claims
- 21 (3 independent)
- Inventors
- Zachary Seldess, James Tracey, Alan Kraemer
- Full text
- Google Patents
The suits
6 cases · E.D. Tex. (3) · N.D. Cal. (2) · S.D. Cal. (1)
| Filed | Defendant | Plaintiff | Court | Docket |
|---|---|---|---|---|
| 2026-06-17 | BEST BUY CO., INC. | BOOMCLOUD 360, INC. | E.D. Tex. | 2:26-cv-00488 |
| 2026-06-17 | TARGET CORPORATION, INC | BOOMCLOUD 360, INC. | E.D. Tex. | 2:26-cv-00489 |
| 2026-06-17 | Walmart Inc | Boomcloud 360 Inc | E.D. Tex. | 1:26-cv-00245 |
| 2026-08-05 | Boomcloud 360, Inc. | Apple Inc. | S.D. Cal. | 3:26-cv-04492 |
| 2026-08-18 | Boomcloud 360, Inc.DJ | Google LLC | N.D. Cal. | 3:26-cv-08573 |
| 2026-09-15 | Boomcloud 360, Inc.DJ | Motorola Mobility LLC | N.D. Cal. | 3:26-cv-10497 |
Docket links open the public record on CourtListener. Filing dates are the complaint's.
Independent claims
What is actually asserted, verbatim.
1. A method for crosstalk cancellation for an audio signal output by a first speaker and a second speaker, comprising: determining a speaker parameter for the first speaker and the second speaker, the speaker parameter comprising a listening angle between the first and second speakers; generating a compensation signal for a plurality of frequency bands of the audio signal, the compensation signal removing estimated spectral defects in each frequency band from crosstalk cancellation applied to the audio signal, wherein the crosstalk cancellation and the compensation signal are determined based on the speaker parameter; precompensating the audio signal for the crosstalk cancellation by adding the compensation signal to the audio signal to generate a precompensated signal; and performing the crosstalk cancellation on the precompensated signal based on the speaker parameter to generate a crosstalk cancelled audio signal.
6. A method for crosstalk processing for an audio signal output by a first speaker and a second speaker, comprising, by processing circuitry: determining one or more speaker parameters for the first speaker and the second speaker, the one or more speaker parameters comprising a listening angle between the first and second speakers; removing spectral defects of the crosstalk processing applied to the audio signal based on applying a filter to the audio signal, the filter including a configuration determined based on the one or more speaker parameters; and applying the crosstalk processing on the audio signal.
14. A non-transitory computer readable medium configured to store program code, the program code comprising instructions that when executed by a processor cause the processor to: determine one or more speaker parameters for a first speaker and a second speaker, the one or more speaker parameters comprising a listening angle between the first and second speakers; remove spectral defects of crosstalk processing applied to the audio signal based on applying a filter to the audio signal, the filter including a configuration determined based on the one or more speaker parameters; and apply the crosstalk processing on the audio signal.
Art before the examiner
49 references of record, 3 cited by the examiner.
Everything listed here was before the Office and is what a challenge must go beyond. Art the examiner never saw is where an invalidity search starts.
Examiner-cited
- US6614910B1 — Stereo sound expander (Central Research Laboratories Limited)
- US20050265558A1 — Method and circuit for enhancement of stereo audio reproduction (Waves Audio Ltd.)
- US9351073B1 — Enhanced stereo playback (Amazon Technologies, Inc.)
Applicant-cited and other (46)
- US3920904A — Method and apparatus for imparting to headphones the sound-reproducing characteristics of loudspeakers
- US4910778A — Signal enhancement processor for stereo system
- JP2000050399A — Acoustic signal processing circuit and method
- EP1194007A2 — Method and signal processing device for converting stereo signals for headphone listening
- WO2004049759A1 — Equalisation of the output in a stereo widening network
- GB2419265A — Processing of stereo audio signals
- US20070213990A1 — Binaural decoder to output spatial stereo sound and a decoding method thereof
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- CN101346895A — Echo suppressing method and device
- WO2009022463A1 — Audio device
- US20090086982A1 — Crosstalk cancellation for closely spaced speakers
- CN100481722C — System and method for enhancing delivered sound in acoustical virtual reality
- EP2099238A1 — Sound signal outputting device, sound signal outputting method, and computer-readable recording medium
- WO2009127515A1 — Apparatus and method for producing 3d audio in systems with closely spaced speakers
- US20090304189A1 — Rendering Center Channel Audio
- CN1941073B — Apparatus and method for removing human voice components in audio signals
- CN101884065A — Spatial audio analysis and synthesis for binaural reproduction and format conversion
- US20110152601A1 — Optically Coupled Bone Conduction Systems and Methods
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- WO2011151771A1 — System and method for sound processing
- WO2012036912A1 — Spectrally uncolored optimal croostalk cancellation for audio through loudspeakers
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- US8213648B2 — Audio signal processing apparatus, audio signal processing method, and audio signal processing program
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- CN102737647A — Encoding and decoding method and encoding and decoding device for enhancing dual-track voice frequency and tone quality
- JP2013013042A — Three-dimensional sound apparatus
- CN102893331A — Methods, apparatus, and computer - readable media for processing of speech signals using head -mounted microphone pair
- EP2560161A1 — Optimal mixing matrices and usage of decorrelators in spatial audio processing
- WO2013181172A1 — Stereo widening over arbitrarily-configured loudspeakers
- CN103928030A — Gradable audio coding system and method based on sub-band space attention measure
- US20150036826A1 — Stereo expander method
- CN104519444A — Audio signal processing circuit and audio system
- TWI484484B — Signal processing apparatus and method, coding apparatus and method, decoding apparatus and method, and signal processing program
- TW201532035A — Prediction-based FM stereo radio noise reduction
- JP5772356B2 — Acoustic characteristic control device and electronic musical instrument
- US20160249151A1 — Method and mobile device for processing an audio signal
- US20170208411A1 — Subband spatial and crosstalk cancellation for audio reproduction
- US20170230777A1 — Audio enhancement for head-mounted speakers
Classification
- H04R5/04primary — 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
- G10L2021/02087 — Noise filtering the noise being separate speech, e.g. cocktail party
- G10L21/0232 — Processing in the frequency domain
- H04R2430/03 — Synergistic effects of band splitting and sub-band processing
- H04R3/14 — Cross-over networks
- H04S1/002 — Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
- H04S2420/01 — 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]
- H04S2420/07 — Synergistic effects of band splitting and sub-band processing
Family
- US10721564B2 — B2 (2020)
- US10225657B2 — B2 (2019)
- US20190090061A1 — A1 (2019)
- US20170208411A1 — A1 (2017)
Abstract
Embodiments herein are primarily described in the context of a system, a method, and a non-transitory computer readable medium for producing a sound with enhanced spatial detectability and reduced crosstalk interference. The audio processing system receives an input audio signal, and performs an audio processing on the input audio signal to generate an output audio signal. In one aspect of the disclosed embodiments, the audio processing system divides the input audio signal into different frequency bands, and enhances a spatial component of the input audio signal with respect to a nonspatial component of the input audio signal for each frequency band.
Also asserted by BOOMCLOUD 360, INC.
- US 10,313,820 — Sub-band spatial audio enhancement (4 defendants)
- US 10,757,527 — Crosstalk cancellation b-chain (4 defendants)
- US 10,524,078 — Crosstalk cancellation b-chain (3 defendants)
- US 11,051,121 — Spectral defect compensation for crosstalk processing of spatial audio signals (3 defendants)
- US 11,533,560 — Dynamic rendering device metadata-informed audio enhancement system (3 defendants)
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This page is assembled from public records — federal court dockets and the patent's own file — and is updated as the case list changes. It states what the record shows and is not an opinion on the validity or infringement of any claim. Patent data via Google Patents; docket data via CourtListener.