JPH0385096A - Speaker system for body sensing acoustic equipment - Google Patents

Abstract

PURPOSE:To listen to a body sensing vibration and an excellent reproduction sound by adopting the constitution such that sound radiating toward a rear space partitioned by a barrier radiates to a head rest front side through a resonance duct. CONSTITUTION:The inside of a head rest 10 is split in forward backward directions by a barrier 11 to form a front space 11A and a rear space 11B. A low frequency range reproduction speaker unit 12 is fitted to the barrier 11 and the unit 12 radiates reproduction sound into the rear space 11B. Resonance ducts 13A, 13B whose one end is opened to the space 11B are fitted to both sides of the unit 12 and the ducts 13A, 13B penetrate through the space 11A and the other end is opened in front of the head rest 10. Moreover, medium high frequency range reproduction speakers 14L, 14R are arranged to both sides of the head rest 10 and radiation direction of the reproduction sound is adjusted in the relation of a person taking a seat.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a speaker system for a sensory acoustic device, and more particularly to a speaker system for a sensory acoustic device that has improved audible low frequency reproduction.

[Conventional technology]

Conventionally known sensory acoustic devices are often sofa-shaped, with a transducer that is driven by the low frequency component of the reproduced sound built into the seat or backrest, and speakers placed on both the left and right sides of the headrest. The system reproduces the aurally reproduced sound along with the vibrations of the transducer.
It is designed so that it can be experienced sensually.

According to this sensory acoustic device, as shown in FIG. 3, the low-frequency components are extracted from the left and right reproduced signals, and the transducer I is driven by the low-frequency components, and the left and right reproduced signals are used to drive the transducer I. , so that acoustic signals are reproduced by speaker units 2L and 2H placed on the left and right sides of the headrest.

In this case, since the low frequency components of the reproduced sound tend to be insufficient, the woofer unit 4 is installed in the internal space 3A of the headrest 3 as shown in FIG. The duct 6 leads the low frequency components to the front of the headrest.

[Problem to be solved by the invention]

In the above-mentioned speaker system for a sensory acoustic device, the length of the resonant duct is determined by the volume of the space in front of the woofer unit, so the length is longer than the thickness of the headrest by ′-h). , and the resonant duct will protrude significantly from the front of the headrest.

As a result, the only place that does not interfere with the seated person's head is the upper part of the seated person's head.In addition to the problem that this product is unsightly, the reproduced sound There was a problem that only the low frequency components were separated, and the reproduced sound was not sufficient for auditory purposes.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a speaker system for a sensory audio device that allows the user to enjoy not only the sensory vibrations but also the aurally reproduced sound with high reproduction fidelity.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention provides a sensory acoustic device including at least a backrest and a headrest. A speaker unit is attached to the partition wall facing the human body side or the returning object side, and a resonance duct is led out from the space on the returning object side to the front surface of the headrest, and the resonance duct is located at least on the left and right sides of the front surface of the headrest, This system is characterized by a configuration in which low-range sound is mixed with sound reproduced by mid-high sound reproduction speakers placed on both sides of the headrest.

[Effect]

According to the speaker system of the present invention, the length of the resonant duct can be determined as calculated, and the resonant duct does not protrude in front of the headrest.

〔Example〕

Embodiments of the present invention will be described below with reference to FIG. 1 and FIG. 2 of the accompanying drawings. First, in these figures, the symbol IO indicates a headrest of a sofa-type sensory acoustic device, and the inside of this headrest is divided in the front and back direction by a partition wall 11 which is a baffle plate, and is divided into a front space 11A and a front space 11A.
It is divided into a rear space 11B. A speaker unit 12 for low frequency reproduction is attached to the center of the partition wall 11, and the speaker unit 12 has a driver 12A located in the front space 11A and a diaphragm located in the rear space 11B. ing. In other words, the speaker unit 12 faces in the opposite direction from the seated person and is configured to radiate reproduced sound into the rear space 11B.

A rear space 11 is provided on both sides of the speaker unit 12.
A resonant duct (13A113B) with one end open is attached to B, and these resonant ducts 13A, 13B
passes through the front space 11A, and the other end is open at the front of the spade dress 10. In other words, the resonance duct communicates the rear space 11B with the outside,
The open end portions are opened on both sides of the headrest just to the left and right ears of the seated person.

Further, speakers 14L and 14R for reproducing medium and high frequencies are arranged on both sides of the headrest 10, so that the direction of radiation of the reproduced sound can be adjusted in relation to the seated person.

Therefore, the reproduced sound reproduced by the subica unit [2] for low frequency reproduction is transmitted from the rear space 11B to the resonance duct 1.
It passes through 3A%13B and is emitted to the front of the headrest IO, near both ears of the seated person. In other words, a bass reflex type speaker system is configured for low frequency reproduction.

The low-frequency sound emitted from the resonant duct is mixed with left and right middle and high-frequency reproduced sounds near the ears of the seated person, and is transmitted to the auditory senses as a balanced reproduced sound. In other words, low-frequency sounds are reproduced aurally as well as low-frequency sounds of bodily sound, and it becomes possible to enjoy sound quality with a flat f characteristic.

〔Effect of the invention〕

As is clear from the above description, according to the speaker system for a sensory acoustic device of the present invention, the acoustic low frequency component that is balanced with the low frequency component that drives the sensory acoustic device is transmitted in a bass reflex format, that is, the space inside the headrest is The front space and the rear space are separated by a bulkhead, and the sound radiated toward the rear space is radiated from the rear space to the front side of the headrest by a resonant duct, so it is balanced with the mid-to-high frequency sound reproduction. It is possible to reproduce low-frequency sounds, and it can be an excellent reproduction device along with the bodily sensation of vibration.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the sensory acoustic device of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 3 is a circuit block diagram of the sensory acoustic device, and FIG. 4 is a conventional FIG. 2 is a plan cross-sectional view of the speaker system.

Claims (1)

[Claims] (1) In a sensory acoustic device that includes at least a backrest and a headrest, there is a partition wall that partitions the internal space of the headrest in the front-rear direction, and a partition wall that faces the human body side or the side away from the human body in the space partitioned by the partition wall. a speaker unit attached to the headrest, and a resonance duct led out from the space on the side opposite to the human body to the front of the headrest, the resonance duct being located at least on the front left and right sides of the headrest, and a middle and high frequency sound reproduction device disposed on both sides of the headrest. A speaker system characterized by being configured so that sound reproduced by the speaker and low-range sound are mixed.