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Speaker controller, signal supplying device, and speaker system

A control device and control signal technology, applied in the field of loudspeaker systems, can solve problems such as difficult removal and high cost

Inactive Publication Date: 2020-06-30
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a case, in order to utilize the above-mentioned technology, it is necessary to remove the existing speaker wiring and install a new speaker wiring connecting each power amplifier and each speaker, which costs a lot of money.
In addition, in the case of aging facilities, it may be difficult to remove existing speaker wiring and install new speaker wiring

Method used

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  • Speaker controller, signal supplying device, and speaker system
  • Speaker controller, signal supplying device, and speaker system
  • Speaker controller, signal supplying device, and speaker system

Examples

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Embodiment Construction

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0023] figure 1 It is a block diagram showing the configuration of a speaker system using a speaker control device according to an embodiment of the present invention. The speaker system is installed in various facilities such as supermarkets, hospitals, schools, libraries, induction devices, amusement parks, and haunted houses. In particular, a plurality of speakers are scattered and arranged in various places of the facility, and when various sound signals are supplied to the speakers, it is possible to select a speaker for sound emission.

[0024] exist figure 1 In the speaker system shown, one system of speaker wiring 2 composed of two signal lines is connected to the signal supply device 1 . Also, a plurality of speakers 4 are connected to the speaker wiring 2 in a row via the respective speaker control devices 3 . The signal supply device 1 outputs an audio si...

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PUM

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Abstract

A speaker controller (3) has a switch (380) inserted in the middle of a speaker wiring that supplies a sound signal to a speaker (4), a switch control circuit (300) for retrieving an ON / OFF control signal that indicates the ON / OFF of a switch from an alternating-current signal supplied via the speaker wiring and holding the retrieved signal and controlling the ON / OFF of the switch (380) by the ON / OFF control signal, and a power supply circuit (390) for generating a power supply voltage that actuates the switch control circuit (300) from the alternating-current signal supplied via the speaker wiring.

Description

technical field [0001] The present invention relates to a speaker control device, a signal supply device, and a speaker system that enable sound to be reproduced from any speaker among a plurality of speakers connected in a row on a speaker wiring. Background technique [0002] In various facilities such as supermarkets and hospitals, a plurality of loudspeakers are sometimes scattered and arranged in various places. For example, in an emergency such as a fire, it is necessary to make the speakers in these places play an emergency broadcast announcement (announce) simultaneously. On the other hand, for example, shopping information related to a specific store in a supermarket may be preferably reproduced only by a specific speaker. Therefore, a technique for selecting an arbitrary speaker among a plurality of speakers to play sound is required. As this technique, a case where a plurality of speakers are connected to each power amplifier and each speaker is individually dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R27/00H02J13/00H04R3/12
CPCH04R3/12H04R27/00H02J2310/22H02J13/00007Y04S40/121Y02B90/20G08B3/10H03F3/183H03F2200/03H04R1/403H04R3/04
Inventor 野吕正夫
Owner YAMAHA CORP
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