EP0744881A3 - Headphone reproducing apparatus - Google Patents

Headphone reproducing apparatus Download PDF

Info

Publication number
EP0744881A3
EP0744881A3 EP96303604A EP96303604A EP0744881A3 EP 0744881 A3 EP0744881 A3 EP 0744881A3 EP 96303604 A EP96303604 A EP 96303604A EP 96303604 A EP96303604 A EP 96303604A EP 0744881 A3 EP0744881 A3 EP 0744881A3
Authority
EP
European Patent Office
Prior art keywords
channel input
sound
multiplier
pass filter
low
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.)
Granted
Application number
EP96303604A
Other languages
German (de)
French (fr)
Other versions
EP0744881A2 (en
EP0744881B1 (en
Inventor
Toshikazu Okada
Takuma Suzuki
Mitsuo Matsumoto
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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
Priority claimed from JP7148323A external-priority patent/JP2900985B2/en
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of EP0744881A2 publication Critical patent/EP0744881A2/en
Publication of EP0744881A3 publication Critical patent/EP0744881A3/en
Application granted granted Critical
Publication of EP0744881B1 publication Critical patent/EP0744881B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • 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
    • H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
    • H04S7/303—Tracking of listener position or orientation
    • H04S7/304—For headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • 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]

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

A headphone reproducing apparatus creates a virtual sound. A listener feels as if a sound came from a virtual sound source that imaginarily exists in a space apart from the listener. A delay circuit delays a first-channel input audio signal and a second-channel input audio signal by predetermined delay times. A low-pass filter changes frequency characteristics of the first- and second-channel input signals to predetermined frequency characteristics. A multiplier changes sound levels of the first- and second-channel input audio signals to predetermined sound levels. The delay circuit, low-pass filter, and multiplier are connected in series to each other. A headphone reproduces the first- and second-channel input signals processed by the delay circuit, low-pass filter, and multiplier as the sound that comes from the virtual sound source.
EP96303604A 1995-05-22 1996-05-21 Headphone reproducing apparatus Expired - Lifetime EP0744881B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP14832395 1995-05-22
JP7148323A JP2900985B2 (en) 1994-05-31 1995-05-22 Headphone playback device
JP148323/95 1995-05-22

Publications (3)

Publication Number Publication Date
EP0744881A2 EP0744881A2 (en) 1996-11-27
EP0744881A3 true EP0744881A3 (en) 1999-06-09
EP0744881B1 EP0744881B1 (en) 2004-07-14

Family

ID=15450221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96303604A Expired - Lifetime EP0744881B1 (en) 1995-05-22 1996-05-21 Headphone reproducing apparatus

Country Status (5)

Country Link
EP (1) EP0744881B1 (en)
CN (1) CN1108083C (en)
DE (1) DE69632889T2 (en)
MY (1) MY124476A (en)
SG (1) SG89238A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW410527B (en) * 1998-01-08 2000-11-01 Sanyo Electric Co Stereo sound processing device
WO2006137400A1 (en) 2005-06-21 2006-12-28 Japan Science And Technology Agency Mixing device, method, and program
WO2013076534A1 (en) * 2011-11-21 2013-05-30 Sony Ericsson Mobile Communications Ab Determining direction of a display associated with an earphone set
TWI498014B (en) * 2012-07-11 2015-08-21 Univ Nat Cheng Kung Method for generating optimal sound field using speakers
CN106714017B (en) * 2015-07-17 2019-08-23 中兴通讯股份有限公司 A kind of method, apparatus, terminal and earphone adjusting earphone sound field
CN105307086A (en) * 2015-11-18 2016-02-03 王宋伟 Method and system for simulating surround sound for two-channel headset
CN105578355B (en) 2015-12-23 2019-02-26 惠州Tcl移动通信有限公司 A kind of method and system enhancing virtual reality glasses audio
CN110740415B (en) * 2018-07-20 2022-04-26 宏碁股份有限公司 Sound effect output device, arithmetic device and sound effect control method thereof
CN109640226A (en) * 2018-11-10 2019-04-16 东莞市华睿电子科技有限公司 A kind of earpiece audio is converted into the control method of Virtual Sound
CN112437385A (en) * 2020-11-19 2021-03-02 袁志钢 Earphone set

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296340A1 (en) * 1974-12-25 1976-07-23 Matsushita Electric Ind Co Ltd HEADPHONE LISTENING SYSTEM
JPS58198999A (en) * 1982-05-17 1983-11-19 Matsushita Electric Ind Co Ltd Sound image controller
GB2220818A (en) * 1988-07-15 1990-01-17 Gary Keith Henry Stereo systems
JPH02219400A (en) * 1989-02-20 1990-08-31 Sanyo Electric Co Ltd Stereophonic sound reproducing device
EP0464217A1 (en) * 1990-01-19 1992-01-08 Sony Corporation Apparatus for reproducing acoustic signals
JPH0682242A (en) * 1992-08-31 1994-03-22 Victor Co Of Japan Ltd Three-dimensional position/attitude detection method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8900330D0 (en) * 1989-01-07 1990-04-25 British Aerospace Binaural display apparatus
WO1993026085A1 (en) * 1992-06-05 1993-12-23 Noise Cancellation Technologies Active/passive headset with speech filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296340A1 (en) * 1974-12-25 1976-07-23 Matsushita Electric Ind Co Ltd HEADPHONE LISTENING SYSTEM
JPS58198999A (en) * 1982-05-17 1983-11-19 Matsushita Electric Ind Co Ltd Sound image controller
GB2220818A (en) * 1988-07-15 1990-01-17 Gary Keith Henry Stereo systems
JPH02219400A (en) * 1989-02-20 1990-08-31 Sanyo Electric Co Ltd Stereophonic sound reproducing device
EP0464217A1 (en) * 1990-01-19 1992-01-08 Sony Corporation Apparatus for reproducing acoustic signals
JPH0682242A (en) * 1992-08-31 1994-03-22 Victor Co Of Japan Ltd Three-dimensional position/attitude detection method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 520 (E - 1002) 14 November 1990 (1990-11-14) *
PATENT ABSTRACTS OF JAPAN vol. 18, no. 333 (P - 1759) 23 June 1994 (1994-06-23) *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 44 (E - 229) 25 February 1984 (1984-02-25) *

Also Published As

Publication number Publication date
EP0744881A2 (en) 1996-11-27
MY124476A (en) 2006-06-30
DE69632889D1 (en) 2004-08-19
CN1140968A (en) 1997-01-22
CN1108083C (en) 2003-05-07
DE69632889T2 (en) 2005-07-21
EP0744881B1 (en) 2004-07-14
SG89238A1 (en) 2002-06-18

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