CA2446645A1 - Parametric virtual speaker and surround-sound system - Google Patents

Parametric virtual speaker and surround-sound system Download PDF

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Publication number
CA2446645A1
CA2446645A1 CA002446645A CA2446645A CA2446645A1 CA 2446645 A1 CA2446645 A1 CA 2446645A1 CA 002446645 A CA002446645 A CA 002446645A CA 2446645 A CA2446645 A CA 2446645A CA 2446645 A1 CA2446645 A1 CA 2446645A1
Authority
CA
Canada
Prior art keywords
sound
audio
parametric
ultrasonic
speaker
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002446645A
Other languages
English (en)
French (fr)
Inventor
Elwood G. Norris
James J. Croft, Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Genasys Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2446645A1 publication Critical patent/CA2446645A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0091—Means for obtaining special acoustic effects
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing ultrasonic, sonic or infrasonic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/265—Acoustic effect simulation, i.e. volume, spatial, resonance or reverberation effects added to a musical sound, usually by appropriate filtering or delays
    • G10H2210/295—Spatial effects, musical uses of multiple audio channels, e.g. stereo
    • G10H2210/301—Soundscape or sound field simulation, reproduction or control for musical purposes, e.g. surround or 3D sound; Granular synthesis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
    • H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Stereophonic System (AREA)
CA002446645A 2001-05-07 2002-05-07 Parametric virtual speaker and surround-sound system Abandoned CA2446645A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/850,523 US6577738B2 (en) 1996-07-17 2001-05-07 Parametric virtual speaker and surround-sound system
US09/850,523 2001-05-07
PCT/US2002/014486 WO2002093773A1 (en) 2001-05-07 2002-05-07 Parametric virtual speaker and surround-sound system

Publications (1)

Publication Number Publication Date
CA2446645A1 true CA2446645A1 (en) 2002-11-21

Family

ID=25308368

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002446645A Abandoned CA2446645A1 (en) 2001-05-07 2002-05-07 Parametric virtual speaker and surround-sound system

Country Status (6)

Country Link
US (2) US6577738B2 (https=)
EP (1) EP1386415A4 (https=)
JP (1) JP2004527968A (https=)
CN (1) CN1237732C (https=)
CA (1) CA2446645A1 (https=)
WO (1) WO2002093773A1 (https=)

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Also Published As

Publication number Publication date
US20010055397A1 (en) 2001-12-27
EP1386415A1 (en) 2004-02-04
CN1237732C (zh) 2006-01-18
EP1386415A4 (en) 2008-11-05
US7298853B2 (en) 2007-11-20
US6577738B2 (en) 2003-06-10
JP2004527968A (ja) 2004-09-09
WO2002093773A1 (en) 2002-11-21
CN1507701A (zh) 2004-06-23
US20040247140A1 (en) 2004-12-09

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