JP2722305B2 - Hall structure with multi-storey seats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a hall, such as a theater or a music hall, having seats on the second or third floor.

[0002]

2. Description of the Related Art Conventionally, halls accommodating more than 1,000 people are often provided with balcony seats such as the second and third floor seats, but the passenger seats below these balcony seats have poor acoustic characteristics. Not good. In such a situation, the acoustic characteristics of the audience seats are not structurally improved, and as a method of improving the acoustic characteristics, a speaker is set under a balcony to reinforce the sound generated on the stage. Things are going on.

[0003]

Listening to music reinforced by such speakers at a concert lacks a sense of realism, and is highly rejected, especially in the field of classical music. Rarely do concerts. The presence of a seat with poor acoustic characteristics is not preferable because both the performer and the fans remain dissatisfied.

[0004] It is an object of the present invention to structurally improve the acoustic characteristics under the balcony seats of a hall having multi-story seats on the second floor or higher, that is, a balcony seat.

[0005]

In the present invention, there is provided a means for solving] To achieve the above object, multi-storey seats also on audience seats provided seats
Of At a hall, behind the seats of the upper side floor, and to provide a sound opening communicating an upper space of said upper floor to the lower floor of the rear seats of the upper space. It is preferable that the acoustic opening be formed large except for a passage portion behind the passenger seat on the upper floor .

[0006]

[Function] The sound generated on the stage is reflected by the acoustic reflector on the ceiling, floor, side walls and back, and reaches the seats. The seats below the balcony seats are provided behind the balcony seats. As reflected sound from the upper floor enters through the opening,
The lack of sound arrival due to the presence of the balcony seats above is compensated for, and the acoustic characteristics are improved.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
In FIG. 1, reference numeral 1 denotes a hall having a stage 2 having an atrium, and a second-floor seat 4 is provided as a balcony seat above a first-floor seat 3, and an acoustic reflector 5 is provided on a ceiling. Reference numeral 6 denotes an acoustic reflector provided on the stage 2 during a concert.

Although such a configuration is not particularly different from the configuration of the conventional hall, in the present invention, the space 7 above the second-floor seat 4 is placed behind the second-floor seat 4 as the upper - floor seat. Acoustic opening 9 communicating with the upper space 8 of the passenger seat behind 3
The provided first floor poor acoustic characteristics become two Kaikyakuseki 4 below
Sound from the stage 2 is reflected by the rear wall 10 or the like through the acoustic opening 9 to the rear passenger seat, and the acoustic characteristics thereat are improved.

[0009] The improvement of the acoustic characteristics referred to herein means improvement of each element of reverberation time, sound pressure distribution, and acoustic evaluation index.
The acoustic evaluation index is an echo time pattern, a direct sound component to total energy ratio (D value), a Clarity C (C value), and a time center of gravity ts. When the sound opening 9 is not provided, the reverberation time of the rear part A of the passenger seat 3 on the first floor is about 3 seconds when the sound source of the stage 2 is 1 KHz. About 5 to 10%. Further, the sound pressure distribution is compared with the case without the acoustic opening 9 and the case with the acoustic opening 9.
As shown in FIG. 4, when there is the acoustic opening 9, the sound pressure increases, and the sound pressure of the 500 Hz sound increases more remarkably than the 1 kHz sound. The sound pressure did not change in the first-floor seat 3 near the stage 2. Further, the echo time pattern of the acoustic evaluation index has a long amplitude for a sound source of 1 KHz and one octave, and the echo effect is good. The D value is smaller as shown in FIG. 6 when the acoustic aperture 9 is provided than when it is not provided, and the C value indicating the clarity of the sound is also smaller as shown in FIG. The center of gravity ts increases as shown in FIG. 8, and it can be seen from these indices that the diffuse sound component increases. When the depth of the second-floor seat 4 is increased and the area of the first-floor seat 3 covered by the second-floor seat 4 is increased, the acoustic characteristics of the covered seat are further reduced. By providing them, the acoustic characteristics can be improved.
As shown in FIG. 3, the acoustic opening 9 is preferably formed large behind the second-floor passenger seat 4 except for the passage portion 11.

[0010]

According to the present invention as described above, according to the present invention, behind the seats of the upper floor of the hall, behind the space of the upper part of the lower floor
The acoustic opening that communicates with the upper space of the
After the audience stage sound lower floor rear through the acoustic aperture
Furnace shell become wrap around, architecturally can improve the audience of the acoustic characteristics of the rear, the effect of the equal favors concert.

[Brief description of the drawings]

FIG. 1 is a cutaway side view of an embodiment of the present invention.

FIG. 2 is a cut-away plan view of a first-floor passenger seat portion of FIG. 1;

FIG. 3 is a cut-away plan view of the second-floor passenger seat of FIG. 1;

FIG. 4 is a diagram of a measurement result of a sound pressure distribution.

FIG. 5 is a diagram of an echo time pattern.

FIG. 6 is a diagram of a measurement result of a D value.

FIG. 7 is a diagram of a measurement result of a C value.

FIG. 8 is a diagram of a measurement result of ts.

[Explanation of symbols]

1 hall 3 lower seat 4 upper seat 7, 8 space 9 sound opening 11
aisle

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takeshi Iwamoto 518-1, Komagaki, Nagareyama-shi, Chiba Mitsui Construction Co., Ltd. Technology Development Headquarters Technical Research Institute (56) References ) JP-A-55-57899 (JP, A)

Claims (2)

(57) [Claims] 1. A At a passenger seat multi-storey seats ho <br/> Lumpur also provided with seats on the seat, behind the seats of the upper side floor, the space above the said upper floors of the lower floor A hall structure with multi-storey seats, characterized by having an acoustic opening communicating with the upper space of the rear seats. 2. The structure of a hall having a multi-story passenger seat according to claim 1, wherein the acoustic opening is provided behind a passenger seat on the upper floor except for a passage portion.