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Sound reproducing device

一种再生装置、声音的技术，应用在声音输入/输出、扩音器、传声器等方向，能够解决不能充分达到广告注意等问题

Active Publication Date: 2013-04-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong directivity, sometimes the sound will not be transmitted to pedestrians other than the specific object, and the effect of attracting attention to the advertisement cannot be fully achieved.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] figure 1 It is a block diagram of the sound reproduction apparatus 1001 in Embodiment 1 of this invention.

[0016] exist figure 1 Among them, the display 11 is a self-luminous or backlit flat-panel display, which displays advertisement content statically or dynamically. Therefore, since the display 11 has the light source 11L, the visually noticeable effect is enhanced. The display 11 is installed, for example, in front of a store or on a wall of a passage in order to attract the attention of unspecified many passers-by.

[0017] A parametric speaker 13 is provided in the display 11 .

[0018] The parametric speaker 13 used in the sound reproduction device 1001 reproduces audible sound. The parametric speaker 13 has a characteristic that the sound pressure of audible sound has a peak at a predetermined distance from the position of the parametric speaker 13 in the direction of the sound axis, and uses ultrasonic waves as a carrier. Once the parametric speaker 13...

Embodiment approach 2

[0062] Since the configuration of the sound reproduction device 1001 in the second embodiment is figure 1 The sound reproduction device 1001 shown is the same, and therefore, a detailed description thereof will be omitted.

[0063] The above-mentioned basic operation is: according to the number of people in front of the display 11 obtained by the output of the human sensor 25, the control unit 19 changes the direction of the parameter speaker 13 through the drive unit 15 and reproduces the control of the sound information and the control of the reproduction speaker 27. The control of the voice message is toggled. Sound reproduction device 1001 in Embodiment 2 may also perform the following operations for this operation.

[0064] 5) When the number of people obtained from the output of the human detection sensor 25 is equal to or smaller than the number of the parametric speakers 13, the control unit 19 controls the drive unit 15 to follow the person and reproduces the audio ...

Embodiment approach 3

[0085] figure 2 It is a block diagram of the sound reproduction apparatus 1002 in Embodiment 3 of this invention. exist figure 2 in, right with figure 1 The same configurations of the illustrated sound reproduction device 1001 are denoted by the same reference numerals.

[0086] In the sound reproduction device 1002 in Embodiment 3, as figure 2 As shown, a plurality of parametric speaker units 17 each composed of a parametric speaker 13 and a drive unit 15 are provided on the display 11 . The sound reproduction device 1002 in Embodiment 3 has two parametric speaker units 17 .

[0087] Here, in Embodiment 3, each parametric speaker 13 is electrically connected to one parametric speaker drive circuit 23 . Therefore, the same sound information is reproduced from each parametric speaker 13 .

[0088] Next, the operation of the sound reproduction device 1002 will be described.

[0089] First, in the basic operation, Embodiment 3 is a configuration in which two drive unit...

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Abstract

A sound reproducing device includes parametric speakers disposed to a display, a loudspeaker, drivers, a human-body sensor, and a controller. The loudspeaker has a wider directivity than the parametric speakers. The drivers change directions of the parametric speakers, respectively. The parametric speakers and the drivers constitute at least two parametric speaker units each composed of respective one of the parametric speakers and respective one of the drivers. The controller reproduces sound information based the number of persons in front of the display detected from an output from the human-body senor. The sound reproducing device reduces the possibility for a number of persons to hear the sound nosily, and allows drawing more attention to the content, e.g. an advertisement.

Description

technical field [0001] The present invention relates to a sound reproduction device using a parametric loudspeaker. Background technique [0002] In recent years, display devices for advertising by displaying large-scale images have been developed. Such a display device is capable of advertising through moving images, thus increasing the degree of attention paid to advertisements. At this time, by reproducing audio information such as audio, music, and sound effects, the degree of interest in the advertisement can be further increased. However, reproducing this sound information can sometimes create a perception of noise for pedestrians. [0003] For this reason, the scheme of a kind of sound output control device is proposed in the prior art, and it is to use the super directivity loudspeaker (also called parametric loudspeaker) that has directivity in the sound information, and the sound information is only transmitted to the specific object. Sound reproduction device. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/16
CPCH04R1/323H04R5/02H04R27/00H04S7/303H04R2201/025H04R2217/03H04R2499/15
Inventor 今野文靖武田克
Owner PANASONIC CORP
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