MX2023006964A - Sincronizacion del reloj de muestreo de audio. - Google Patents

Sincronizacion del reloj de muestreo de audio.

Info

Publication number
MX2023006964A
MX2023006964A MX2023006964A MX2023006964A MX2023006964A MX 2023006964 A MX2023006964 A MX 2023006964A MX 2023006964 A MX2023006964 A MX 2023006964A MX 2023006964 A MX2023006964 A MX 2023006964A MX 2023006964 A MX2023006964 A MX 2023006964A
Authority
MX
Mexico
Prior art keywords
sequence
signal
clock synchronization
mls
pseudorandom
Prior art date
Application number
MX2023006964A
Other languages
English (en)
Inventor
Matthew Easley
Matthew S Barnhill
Roger R Darr
Original Assignee
That Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by That Corp filed Critical That Corp
Publication of MX2023006964A publication Critical patent/MX2023006964A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/439—Processing of audio elementary streams
    • H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/485—End-user interface for client configuration
    • H04N21/4852—End-user interface for client configuration for modifying audio parameters, e.g. switching between mono and stereo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N2017/006—Diagnosis, testing or measuring for television systems or their details for television sound
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

Se describen sistemas, métodos y algoritmos para estimar la diferencia de reloj de muestreo entre un dispositivo de reproducción y grabación de audio. La diferencia de reloj de muestreo puede determinarse mediante la reproducción de forma secuencial de la misma señal pseudoaleatoria y aprovechamiento de las propiedades estadísticas de dicha señal en la grabación. Una modalidad ejemplar utiliza una secuencia de longitud máxima (MLS) para la señal pseudoaleatoria. Aunque una secuencia MLS es una buena elección para la sincronización del reloj, es posible utilizar otras secuencias pseudoaleatorias. Es preferible que la secuencia tenga un pico de correlación agudo que sea fácilmente discernible incluso con un solo desplazamiento de la muestra y que tenga una longitud suficiente para soportar la deriva del reloj prevista.
MX2023006964A 2020-12-17 2021-12-16 Sincronizacion del reloj de muestreo de audio. MX2023006964A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063126563P 2020-12-17 2020-12-17
PCT/US2021/063767 WO2022133067A1 (en) 2020-12-17 2021-12-16 Audio sampling clock synchronization

Publications (1)

Publication Number Publication Date
MX2023006964A true MX2023006964A (es) 2023-06-23

Family

ID=82021834

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2023006964A MX2023006964A (es) 2020-12-17 2021-12-16 Sincronizacion del reloj de muestreo de audio.

Country Status (8)

Country Link
US (1) US11997330B2 (es)
CN (1) CN116349170A (es)
AR (1) AR124415A1 (es)
AU (1) AU2021401747A1 (es)
GB (1) GB2613748A (es)
MX (1) MX2023006964A (es)
TW (1) TWI792779B (es)
WO (1) WO2022133067A1 (es)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0301093D0 (en) 2003-01-17 2003-02-19 1 Ltd Set-up method for array-type sound systems
US7702941B2 (en) * 2003-08-13 2010-04-20 Intel Corporation Universal adaptive synchronization scheme for distributed audio-video capture on heterogeneous computing platforms
US20110311065A1 (en) * 2006-03-14 2011-12-22 Harman International Industries, Incorporated Extraction of channels from multichannel signals utilizing stimulus
US8301790B2 (en) * 2007-05-30 2012-10-30 Randy Morrison Synchronization of audio and video signals from remote sources over the internet
US9749750B2 (en) * 2014-07-01 2017-08-29 Corning Incorporated Cross-cancellation of audio signals in a stereo flat panel speaker
CN107710770B (zh) * 2015-09-28 2021-02-09 谷歌有限责任公司 用于时间同步的多区域媒体流式传输的系统和方法
US9798515B1 (en) * 2016-03-31 2017-10-24 Bose Corporation Clock synchronization for audio playback devices

Also Published As

Publication number Publication date
TWI792779B (zh) 2023-02-11
US11997330B2 (en) 2024-05-28
AU2021401747A1 (en) 2023-05-04
GB2613748A (en) 2023-06-14
CN116349170A (zh) 2023-06-27
WO2022133067A1 (en) 2022-06-23
AR124415A1 (es) 2023-03-29
TW202232305A (zh) 2022-08-16
US20220201349A1 (en) 2022-06-23

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