EP0451991A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Speaker system and TV with the same
Assignee: Panasonic Holdings Corp
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Filing: 1991-03-27
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Granted: —
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Expires: 2011-03-27
Abstract
Abstract In the speaker system, an acoustic pipe for conducting a sound wave is arranged in front of a speaker for reproducing a middle and low frequency sound. The acoustic pipe has a rectangular open end portion. A speaker for reproducing a high frequency sound is disposed within the acoustic pipe coaxially with and in front of the speaker for reproducing the middle and low frequency. With this construction, attenuation of middle and high frequency components of sound signals which are produced from the middle and low frequency sound reproducing speaker is suppressed. Moreover, it is possible to conduct the high and middle frequency components and a high frequency component, which is reproduced by the high frequency sound reproducing speaker, as naturally composed sound signals to the open end portion of the acoustic pipe. The speaker system thus exhibits excellent characteristics in sound image localization and articulation of sound, thereby providing a high tone quality to the TV. The TV may be miniaturized with the speaker system.
Inventors
- 👤 Hideaki Inoue
- 👤 Kiyoshi Ohashi
- 👤 Asahiko Okada
- 👤 Hiroshi Koshiishi
- 👤 Toshiharu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 12:51
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/342; G; G10; G10K; G10K11/00; G10K11/02; G10K11/025; H04N; H04N5/00; H04N5/64; H04N5/642; H04R1/22; H04R1/26; H04R5/00; H04R5/02; H04R1/28; H04R1/2807; H04R1/2811
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
205 words
A speaker system characterized in that an acoustic pipe for conducting a sound wave is arranged in front of a speaker for reproducing a middle and low frequency sound, said acoustic pipe having a substantially rectangular open end portion, a speaker for reproducing a high frequency sound is disposed within said acoustic pipe coaxially with and in front of said speaker for reproducing the middle and low frequency sound, a sound absorbing material is disposed on opposite sides of said speaker for reproducing the high frequency sound so as to interpose a cavity therebetween, said cavity conducting the sound wave from the speaker for reproducing the middle and low frequency sound, an area of an opening portion of the front of said speaker for reproducing the middle and low frequency sound is made smaller as an acoustic equalizer by 20 to 50% than an effective radiation area of said speaker for reproducing the middle and low frequency sound by using a magnetic circuit portion of said speaker for reproducing the high frequency sound, and said opening end portion of said acoustic pipe is larger in area of a sound conductor than the front portion of said speaker for reproducing the middle and low frequency sound.
Claim 2
Dependent Claim
273 words
A speaker system characterized in that an acoustic pipe for conducting a sound wave is arranged in front of a speaker for reproducing a middle and low frequency sound, said acoustic pipe having a rectangular open end portion, a speaker for reproducing a high frequency sound is disposed within said acoustic pipe coaxially with and in front of said speaker for reproducing the middle and low frequency sound, a sound absorbing material is disposed on opposite sides of said speaker for reproducing the high frequency sound so as to interpose a cavity therebetween, said cavity conducting the sound wave from the speaker for reproducing the middle and low frequency sound, an area of an opening portion of the front of said speaker for reproducing the middle and low frequency sound is made smaller as an acoustic equalizer by 20 to 50% than an effective radiation area of said speaker for reproducing the middle and low frequency sound by using a magnetic circuit portion of said speaker for reproducing the high frequency sound as an acoustic lens, said opening end portion of said acoustic pipe is larger in area of sound conductor than the front portion of said speaker for reproducing the middle and low frequency sound, and a distance from a surface on which said speaker for reproducing the middle and low frequency sound is mounted to a surface on which said speaker for reproducing the high frequency sound is mounted is 1/3 and below a distance from said surface on which said speaker for reproducing the middle and low frequency sound is mounted to said opening end portion of said acoustic pipe.
Claim 3
Dependent Claim
104 words
A speaker system as claimed in Claim 1 or 2, wherein first reflection plates are disposed on opposite sides of a front portion of said speaker for reproducing the middle and low frequency sound, said first reflection plates constituting a sound conductor for conducting a sound wave emitted from said speaker for reproducing the middle and low frequency sound, and second reflection plates are disposed on opposite sides of a front portion of said speaker for reproducing the high frequency sound, said second reflection plates constituting a sound conductor for conducting a sound wave emitted from said speaker for reproducing the high frequency sound.
Claim 4
Dependent Claim
51 words
A speaker system is claimed in Claim 1 or 2, wherein said acoustic pipe is provided with a pair of covers for covering openings formed therethrough, said openings being adapted for inserting the sound absorbing material into said acoustic pipe therethrough, and said acoustic pipe without said covers is integrally molded.
Claim 5
Dependent Claim
131 words
A TV characterized in that a speaker system is incorporated therein, said speaker system including an acoustic pipe for conducting a sound wave arranged in the front of a speaker for reproducing a middle and low frequency sound, said acoustic pipe having a rectangular open end portion, and a speaker for reproducing a high frequency sound disposed within said acoustic pipe closely and coaxially with and in front of said speaker for reproducing the middle and low frequency sound, said speaker system is arranged along a cathode tube so that said open end portion of said acoustic pipe is placed at a front portion of the TV, and a TV cabinet of the TV is formed to be arranged along an outside of said acoustic pipe placed along the cathode tube.
References Cited (Backward Citations)
No citation records indexed.
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