WO2022176641A1 - Système acoustique, procédé de commande de système acoustique, appareil acoustique, haut-parleur et appareil de distribution - Google Patents

Système acoustique, procédé de commande de système acoustique, appareil acoustique, haut-parleur et appareil de distribution Download PDF

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Publication number
WO2022176641A1
WO2022176641A1 PCT/JP2022/004358 JP2022004358W WO2022176641A1 WO 2022176641 A1 WO2022176641 A1 WO 2022176641A1 JP 2022004358 W JP2022004358 W JP 2022004358W WO 2022176641 A1 WO2022176641 A1 WO 2022176641A1
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WIPO (PCT)
Prior art keywords
state
power
instruction
speaker
standby state
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PCT/JP2022/004358
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English (en)
Japanese (ja)
Inventor
孝紀 清水
祐希 末光
浩一 佐藤
聖道 佐藤
Original Assignee
ヤマハ株式会社
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Application filed by ヤマハ株式会社 filed Critical ヤマハ株式会社
Priority to JP2023500716A priority Critical patent/JPWO2022176641A1/ja
Publication of WO2022176641A1 publication Critical patent/WO2022176641A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control

Definitions

  • An embodiment of the present invention relates to an acoustic system, an acoustic system control method, an acoustic device, a speaker, and a distribution device.
  • Patent Document 1 discloses that when sound reproduced by a portable music player at hand of a user is also reproduced by a sound player at a remote location, the power supply of the sound player is turned on in conjunction with the portable music player.
  • a sound reproduction method capable of controlling on and off is disclosed.
  • Patent Literature 1 only controls the power of the sound reproduction device to be turned on and off in conjunction with the portable music reproduction device.
  • An object of an embodiment of the present invention is to provide an audio system that achieves appropriate interlocking according to the state of the power supply of audio equipment.
  • An audio system is an audio system to which a first audio device and a second audio device are connected, wherein the first audio device receives a power-on or standby operation.
  • a first control unit that transmits an instruction to transition to a power-on state or a standby state to the second audio device and transitions to the power-on state or the standby state when the second audio device is When receiving the instruction while receiving external power supply, transition to the power-on state or the standby state according to the instruction; and when receiving the instruction while not receiving the external power supply. has a second control that maintains the current state.
  • an audio system is an audio system to which a first audio device and a second audio device are connected, wherein the first audio device performs power-on or standby operation.
  • a first control unit that transmits an instruction to transition to a power-on state or a standby state to the second audio device and transitions to the power-on state or the standby state when the second audio device receives the instruction;
  • the device shifts to the power-on state or the standby state according to the instruction when the device receives the instruction when the remaining battery level is equal to or greater than the threshold, and returns to the current state when the remaining battery level is less than the threshold.
  • a second control unit for maintaining
  • FIG. 1 is a block diagram showing the configuration of an acoustic system 1;
  • FIG. 2 is a block diagram showing the configuration of a distribution device 10;
  • FIG. 2 is a block diagram showing the configuration of a speaker 11;
  • FIG. 4 is a flow chart showing operations of the speaker 11 and the distribution device 10.
  • FIG. 4 is a flow chart showing operations of the speaker 11 and the distribution device 10.
  • FIG. 4 is a flow chart showing operations of the speaker 11 and the distribution device 10.
  • FIG. 2 is a block diagram showing the configuration of a distribution device 10;
  • FIG. 4 is a flow chart showing operations of the speaker 11 and the distribution device 10.
  • FIG. 4 is a flowchart showing operations of the speaker 11 and the speaker 12; 4 is a flow chart showing operations of the speaker 11 and the distribution device 10.
  • FIG. 3 is a table of assignment of reproduction roles of speakers 11 to 14 stored in flash memory 114 of distribution device 10.
  • FIG. 4 is a flow chart showing operations of the speaker 11 and the distribution device 10 in multi-channel mode. 4 is a flow chart showing the operation when the distribution device 10 transitions from the standby state to the power-on state in the multi-channel mode.
  • 1 is a block diagram showing the configuration of an acoustic system 1;
  • FIG. 1 is a block diagram showing the configuration of an acoustic system 1;
  • FIG. 1 is a block diagram showing the configuration of an acoustic system 1;
  • FIG. 4 is a flow chart showing the operation of the speaker 11;
  • FIG. 1 is a block diagram showing the configuration of an acoustic system 1 according to one embodiment of the present invention.
  • a sound system 1 includes a distribution device 10 and a plurality of speakers 11-14.
  • the distribution device 10 and the plurality of speakers 11-14 are connected by wireless communication.
  • the distribution device 10 and the plurality of speakers 11 to 14 may be connected by wire using an audio cable or the like.
  • the distribution device 10 is an example of the first acoustic device of the present invention
  • the speakers 11-14 are examples of the second acoustic device of the present invention.
  • the distribution device 10 consists of, for example, a set-top box, a personal computer, an audio receiver, a wireless access point, or a speaker device.
  • the distribution device 10 receives content data from a content reproduction device such as a television or player. Also, the distribution device 10 may receive content data from a server or the like via the Internet.
  • the distribution device 10 decodes the received content data and extracts sound signals of multiple channels. However, the distribution device 10 may receive decoded multi-channel sound signals. A distribution device 10 distributes sound signals of a plurality of channels to speakers 11-14.
  • FIG. 2 is a block diagram showing the configuration of the distribution device 10.
  • FIG. 3 is a block diagram showing the configuration of the speaker 11. As shown in FIG. Since the speakers 11 to 14 all have the same configuration and functions, FIG. 3 shows the configuration of the speaker 11 as a representative.
  • the distribution device 10 includes a display 101 , a user interface (I/F) 102 , a CPU 103 , a flash memory 104 , a RAM 105 , a wireless communication section 106 and an HDMI (registered trademark) interface (I/F) 107 .
  • the display 101 consists of a plurality of LEDs and displays, for example, the standby state/power-on state.
  • the user I/F 102 consists of, for example, a power button.
  • a power button is an example of a user interface for accepting a power-on or standby operation.
  • the CPU 103 is an example of a first control unit, reads a program stored in a flash memory 104 as a storage medium to a RAM 105, and implements a predetermined function. For example, the CPU 103 decodes content data received from the HDMI (registered trademark) I/F 107 and extracts sound signals of multiple channels.
  • CPU 103 accepts a power-on or standby operation via the power button of user I/F 102 . For example, when the CPU 103 receives an operation of the power button when the current state is the power-on state, the CPU 103 shifts from the power-on state to the standby state. When the CPU 103 receives an operation of the power button when the current state is the standby state, the CPU 103 shifts from the standby state to the power-on state.
  • the wireless communication unit 106 is a wireless communication unit conforming to standards such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).
  • a wireless communication unit 106 communicates with the speakers 11 to 14 by wireless communication such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).
  • the CPU 103 distributes sound signals of multiple channels to the speakers 11 to 14 via the wireless communication unit 106 .
  • the speaker 11 includes a display 111, a user interface (I/F) 112, a CPU 113, a flash memory 114, a RAM 115, a wireless communication section 116, a DSP 117, a reproduction section 118, a power supply section 119, and a battery 120.
  • I/F user interface
  • the indicator 111 consists of a plurality of LEDs and displays, for example, the standby state/power-on state.
  • the display 111 may also display the current playback mode. Playback mode will be described later.
  • the user I/F 112 consists of, for example, a power button.
  • a power button is an example of a user interface for accepting a power-on or standby operation.
  • the user I/F 112 may have a mode change button for receiving a change in reproduction mode.
  • the CPU 113 is an example of a second control unit, reads a program stored in a flash memory 114 as a storage medium to a RAM 115, and implements a predetermined function. For example, the CPU 113 inputs sound signals received via the wireless communication unit 116 to the DSP 117 .
  • the DSP 117 performs various signal processing on the input sound signal.
  • the reproducing unit 118 has a DA converter, an amplifier, and a speaker unit (not shown). The reproduction unit 118 reproduces the sound signal after signal processing by the DSP 117 and emits sound.
  • the CPU 113 accepts a power-on or standby operation via the power button of the user I/F 112 .
  • the CPU 113 shifts from the power-on state to the standby state.
  • the CPU 113 shifts from the standby state to the power-on state.
  • the power supply unit 119 receives power supply from the outside or the battery 120 .
  • the power supply unit 119 has an AC/DC converter or a DC/DC converter, and supplies necessary power to each hardware configuration of the display unit 111 to the reproduction unit 118 .
  • the power supply unit 119 supplies necessary power to all hardware components in the power-on state. In the standby state, the power supply unit 119 mainly supplies power to the CPU 113 and the wireless communication unit 116, and stops power supply to components related to sound reproduction such as the reproduction unit 118.
  • FIG. A configuration related to sound reproduction is a configuration that consumes a large amount of power, such as amplification.
  • the power supply unit 119 enters a power saving state by stopping the power supply to the configuration related to sound reproduction in the standby state. However, power supply unit 119 supplies power to CPU 113 and wireless communication unit 116 even in the standby state. Therefore, the speaker 11 can transmit and receive information via the network.
  • the power supply unit 119 supplies power supplied from the outside to each hardware configuration. Further, the power supply unit 119 charges the battery 120 when external power supply is provided. The power supply unit 119 supplies the power of the battery 120 to each hardware configuration when there is no external power supply.
  • the speakers 11 to 14 of the present embodiment transition to the power-on state or the standby state in conjunction with the transition of the distribution apparatus 10 to the power-on state or the standby state.
  • FIG. 4 is a flowchart showing operations of the speaker 11 and the distribution device 10.
  • FIG. 4 shows the operation of the speaker 11 as a representative, the other speakers 12 to 14 perform the same operation.
  • the distribution device 10 When the distribution device 10 receives a power operation via the user I/F 102 (S11), it transmits an instruction to switch to a power-on state or a standby state to all currently connected speakers (S12). After that, the distribution device 10 shifts to a power-on state or a standby state (S13). Note that the distribution device 10 can also transmit and receive information via the network in a standby state.
  • the distribution device 10 When the distribution device 10 receives a power operation when the current state is the power-on state, it transmits an instruction to shift to the standby state to all the speakers, and shifts to the standby state. Also, when receiving a power operation when the current state is the standby state, the distribution device 10 transmits an instruction to shift to the power-on state to all the speakers, and shifts to the standby state.
  • the speaker 11 receives an instruction to switch to the power-on state or the standby state from the distribution device 10 (S21).
  • the speaker 11 determines whether or not there is external power supply (S22).
  • the speaker 11 transitions to a power-on state or a standby state when it is determined that external power is supplied (S23).
  • the speaker 11 transitions to the power-on state when receiving an instruction to transition to the power-on state from the distribution device 10 .
  • the speaker 11 shifts to the standby state when receiving an instruction to shift to the standby state from the distribution device 10 .
  • the speaker 11 maintains the current state (S24).
  • the distribution device 10 may extract speakers with external power supply and transmit instructions to switch to the power-on state or the standby state only to the speakers with external power supply.
  • the speakers 11 to 14 periodically transmit information indicating whether or not there is external power supply to the distribution device 10 .
  • An instruction to shift to the power-on state or the standby state is sent only to speakers with external power supply. Therefore, when the speakers 11 to 14 receive an instruction to shift to the power-on state or the standby state, the speakers 11 to 14 shift to the power-on state or the standby state.
  • the speakers 11-14 maintain their current state when there is no external power supply.
  • the speakers 11 to 14 may be linked to the distribution device 10 only when the power-on state is shifted to the standby state. That is, the distribution apparatus 10 may not transmit an instruction when transitioning from the standby state to the power-on state, and may transmit an instruction only when transitioning from the power-on state to the standby state. Alternatively, even if the speakers 11 to 14 receive an instruction to transition to the power-on state, they may maintain the current state if there is no external power supply, and transition to the power-on state only if there is external power supply. good.
  • the standby state includes a network standby state in which power is mainly supplied to CPU 113 and wireless communication unit 116 and information can be transmitted and received via the network, and an eco state in which power supply to wireless communication unit 116 is also stopped. and a standby state.
  • the speakers 11-14 In the eco-standby state, the speakers 11-14 also stop transmitting and receiving information via the network.
  • the power supply unit 119 shifts to the network standby state when there is external power supply, and shifts to the eco standby state when there is no external power supply. Further, when the power supply unit 119 receives external power supply in the eco standby state, the power supply unit 119 shifts to the network standby state.
  • the speakers 11 to 14 maintain the current state (eco-standby state) even if the distribution apparatus 10 switches to the power-on state. Also, when external power is supplied, the speakers 11 to 14 are in a network standby state, and transmit and receive information via the network. Therefore, the speakers 11 to 14 are powered on in conjunction with the distribution apparatus 10 when the power is turned on by the distribution apparatus 10 when external power is supplied.
  • the power supply unit 119 shifts to the network standby state if the remaining amount of the battery 120 is equal to or greater than the threshold, and shifts to the network standby state if the remaining amount of the battery 120 is less than the threshold. may shift to the eco-standby state.
  • the speakers 11 to 14 maintain the current state (eco-standby state) even if the distribution apparatus 10 switches to the power-on state when the remaining amount of the battery 120 is less than the threshold.
  • the speakers 11 to 14 enter a network standby state, and transmit and receive information via the network. Therefore, when the remaining amount of the battery 120 is equal to or higher than the threshold, the speakers 11 to 14 are switched to the power-on state in conjunction with the delivery apparatus 10 when the distribution apparatus 10 is switched to the power-on state.
  • the standby state may be only the network standby state.
  • the speakers 11 to 14 determine whether or not to interlock with the distribution device 10 according to the remaining battery level.
  • the operation of determining whether or not to interlock with the distribution apparatus 10 according to the remaining battery level will be described with reference to FIG.
  • FIG. 5 is a flow chart showing operations of the speaker 11 and the distribution device 10. As shown in FIG. Although FIG. 5 also shows the operation of the speaker 11 as a representative, the other speakers 12 to 14 perform the same operation. The same processing as in FIG. 4 is given the same reference numerals, and the description thereof is omitted.
  • the speaker 11 when the speaker 11 receives an instruction to shift to the power-on state or the standby state from the distribution device 10, it determines whether the remaining amount of the battery 120 is equal to or greater than the threshold (S202). When the speaker 11 determines that the remaining amount of the battery 120 is equal to or higher than the threshold, the speaker 11 shifts to the power-on state or the standby state (S23). On the other hand, when the speaker 11 determines that the remaining amount of the battery 120 is less than the threshold, it maintains the current state (S24).
  • the speaker 11 may determine whether or not there is external power supply even if the remaining amount of the battery 120 is less than the threshold (S204).
  • the speaker 11 shifts to a power-on state or a standby state when there is external power supply even if the remaining amount of the battery 120 is less than the threshold (S23).
  • the speaker 11 may determine whether or not there is external power supply even if the remaining amount of the battery 120 is equal to or greater than the threshold (S205). The speaker 11 maintains the current state when there is no external power supply even if the remaining amount of the battery 120 is equal to or higher than the threshold (S24).
  • the distribution device 10 periodically receives information related to the remaining battery level from the speakers 11 to 14, and instructs only the speakers whose remaining battery level is equal to or greater than the threshold to shift to the power-on state or the standby state. may be sent.
  • the distribution device 10 periodically receives information indicating whether or not there is external power supply from the speakers 11 to 14, and turns on only those speakers whose remaining battery level is equal to or greater than a threshold and for which external power supply is available. It may send an instruction to transition to a state or a standby state.
  • distribution device 10 always receives external power supply.
  • distribution device 10 may also include power supply unit 108 and battery 109 .
  • at least one of speakers 11 to 14 performs the same operation as distribution apparatus 10 shown in FIG. 4, and distribution apparatus 10 performs the same operation as speaker 11 shown in FIG. may
  • At least one of speakers 11 to 14 performs the same operation as distribution apparatus 10 shown in FIG. may perform the same operation as the speaker 11 shown in FIG.
  • either one of the distribution device 10 or the speakers 11 to 14 is assigned to the first audio equipment.
  • At least one of the speakers 11 to 14 may be the first acoustic device of the present invention, and the distribution device 10 may be the second acoustic device.
  • the user can operate the user I/F 102 of the distribution device 10 to assign the distribution device 10 to the first audio device.
  • the user can operate the user I/F 112 of the speakers 11 to 14 to assign the speakers 11 to 14 to the first audio device.
  • user I/F 102 or user I/F 112 includes a "master switch."
  • the distribution device 10 or the speakers 11 to 14 whose master switch is turned on is assigned to the first audio equipment.
  • the interlocking operation as shown in FIG. 10 may be performed between the paired speakers in the reproduction role.
  • the playback mode will be described below.
  • FIG. 11 is a flowchart showing the operation of the speaker 11 and the distribution device 10 when changing modes. Although FIG. 11 shows the operation of the speaker 11 as a representative, the other speakers 12 to 14 perform the same operation.
  • the speaker 11 accepts a change in reproduction mode via the user I/F 112 (S71).
  • the playback mode is set to one of multi-channel mode, synchronous playback mode, and solo mode.
  • the speaker 11 transmits mode change information corresponding to the received reproduction mode to the distribution device 10 (S72).
  • the distribution device 10 receives the mode change information (S81), and performs an operation according to the received mode change information (S82).
  • the multi-channel mode is a mode in which sound signals of different channels are reproduced in each of a plurality of speakers.
  • the distribution apparatus 10 distributes the sound signal to the plurality of speakers according to the allocation of the reproduction roles of the speakers set to the multi-channel mode and the allocation (S83).
  • Synchronous playback mode is a mode in which multiple speakers synchronously play back sound signals of the same channel of the same content.
  • the distribution device 10 receives the mode change information for the synchronous reproduction mode, the distribution device 10 distributes the same sound signal to all the connected speakers 11 to 14 (S84).
  • the distribution device 10 distributes L-channel and R-channel sound signals to the speakers 11-14.
  • Each speaker reproduces the received L-channel and R-channel sound signals.
  • the user can carry the speakers 11 to 14 to different rooms and listen to the same content that he/she listens to in one place (eg, living room) in another place (eg, bedroom).
  • Solo mode is a mode in which the sound signal of content different from that of other speakers is reproduced.
  • the distribution device 10 distributes the specified sound signal to the solo mode speakers.
  • the speaker receives a sound signal of arbitrary content from the distribution device 10 .
  • the solo mode speaker may receive a sound signal of arbitrary content from a host device other than the distribution device 10 and reproduce it.
  • the user sets at least one of the speakers 11 to 14 to solo mode, and designates content to be reproduced by the speaker set to solo mode.
  • the user uses an information processing device (not shown) such as a smartphone connected to the distribution device 10 and the speakers 11 to 14 via a network to specify content to be reproduced by the speakers set to the solo mode.
  • the distribution device 10 assigns playback roles to the speakers 11 to 14 in advance, and distributes sound signals to the speakers 11 to 14 according to the assignment.
  • FIG. 12 is a reproduction role assignment table for the speakers 11 to 14 stored in the flash memory 114 of the distribution device 10.
  • FIG. Distribution device 10 assigns a reproduction role to each of speakers 11-14.
  • the distribution device 10 assigns the L channel to the speaker 11, the R channel to the speaker 12, the SL channel to the speaker 13, and the SR channel to the speaker .
  • the distribution device 10 identifies the speakers 11-14 using IP addresses and MAC addresses.
  • a MAC address is an example of unique identification information for a speaker.
  • the IP address is a local IP address and given by a router (not shown). Note that when the distribution device 10 has a router function, the distribution device 10 assigns an IP address.
  • the distribution device 10 associates the IP address, MAC address, and playback role of each speaker and stores them in the flash memory 114 .
  • FIG. 13 is a flow chart showing operations of the speaker 11 and the distribution device 10 in the multi-channel mode. Although FIG. 13 shows the operation of the speaker 11 as a representative, the other speakers 12 to 14 perform the same operation.
  • the speaker 11 connects to the distribution device 10 via the network (S51).
  • distribution device 10 connects to speakers 11 to 14 via the network (S61).
  • the distribution device 10 assigns a reproduction role to each connected speaker (S62). For example, the user sets the playback role in advance by operating the distribution device 10 and the speakers 11 to 14 .
  • a user may set using an information processing device (not shown) such as a smartphone connected to the distribution device 10 via a network.
  • the distribution device 10 distributes the sound signals of the channels assigned to the speakers 11 to 14 (S63).
  • the speakers 11 to 14 receive the sound signal of each channel (S52) and reproduce the sound signal (S63).
  • FIG. 14 is a flowchart showing operations when the distribution device 10 transitions from the standby state to the power-on state in the multi-channel mode.
  • the distribution device 10 refers to the reproduction role assignment table stored in the flash memory 114 and determines whether or not the corresponding speaker is currently connected (S90).
  • the distribution device 10 performs a process of reproducing sound to each speaker according to the reproduction role (S91). That is, the distribution device 10 refers to the reproduction role assignment table and distributes the sound signal of the channel assigned to each speaker.
  • the distribution device 10 when determining that the speaker corresponding to the reproduction role assignment table is not connected, the distribution device 10 causes the paired speaker in the reproduction role of the insufficient speaker to reproduce the sound of the insufficient speaker. Processing is performed (S92).
  • a pair on the reproduction role is, for example, the L channel and the R channel. Also, like the L channel and SL channel, or the R channel and SR channel, the front channel and the surround channel are also paired on the reproduction role.
  • the speaker 11 reproduces the L channel
  • the speaker 12 reproduces the R channel
  • the speaker 13 reproduces the SR channel
  • the speaker 14 reproduces the SL channel.
  • the speaker 11 is insufficient as shown in FIG. It distributes L-channel and R-channel sound signals.
  • the speaker 12 reproduces L-channel and R-channel sound signals.
  • the distribution device 10 distributes the sound signals of the L channel and the SL channel to the speakers 11 that are paired with the speakers 14 in the reproduction role.
  • the speaker 11 reproduces L-channel and SL-channel sound signals.
  • the distribution device 10 when the distribution device 10 transitions from the standby state to the power-on state, it refers to the allocation table and determines whether or not the corresponding speaker is connected.
  • the distribution device 10 performs processing for reproducing the sound of the reduced speakers with respect to the speakers that are paired with the lacking speakers in the reproduction role. Therefore, even if the number of speakers is insufficient when the standby state is shifted to the power-on state, the sound system 1 uses the paired speakers in the reproduction role to reproduce the channels of the insufficient speakers, thereby reducing the number of speakers. You will not miss a channel of the speaker that is connected. Therefore, it is possible to maintain a multi-channel mode that is comfortable for the user.
  • the distribution device 10 may execute virtual sound image localization processing for virtually localizing the channel to be reproduced by the missing speaker at the position where it should originally be localized.
  • Virtual sound image localization uses a head-related transfer function (hereinafter referred to as HRTF) that indicates the transfer function between the position of the sound source and the ear of the listener.
  • HRTF head-related transfer function
  • the HRTF is an impulse response that expresses the volume, arrival time, frequency characteristics, and the like of sound reaching the left and right ears from a virtual speaker installed at a certain position.
  • the distribution device 10 adds the audio signals of the SR channel and the SL channel to the audio signals of the FR channel and the FL channel, and adds the audio signals of the SR channel and the SL channel, HRTFs are applied from each sound source position to the left and right ears.
  • the sounds of the SL channel and the SR channel can be virtually localized at the positions of the speakers 13 and 14 .
  • the distribution device 10 may increase the volume of the speaker paired with the insufficient speaker in the reproduction role. For example, when the speaker 11 is insufficient, the distribution device 10 transmits instruction information to the speaker 12 to increase the volume by 6 dB. The speaker 12 increases the volume of the reproduced sound by 6 dB based on the instruction information. As a result, the acoustic system of the present embodiment can compensate for the reduction in sound volume due to the reduction in the number of speakers.
  • the speakers 11 to 14 received an instruction to switch to the power-on state or the standby state from the distribution device 10 (S21). However, as shown in FIG. 18, the speakers 11 to 14 are in a standby state when they have not been connected to the distribution device 10 for a predetermined period of time or longer (S500: Yes) and when external power is supplied (S22: Yes). (S23).

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un système acoustique qui réalise une coordination appropriée en fonction de l'état d'alimentation électrique d'appareils acoustiques.　L'invention concerne un système acoustique dans lequel un premier appareil acoustique et un second appareil acoustique sont connectés. Le premier appareil acoustique comprend une première unité de commande qui, en réponse à une opération de mise sous tension ou de veille, transmet une instruction de transition vers un état d'alimentation électrique ou un état de veille au second appareil acoustique, et passe à l'état d'alimentation électrique ou à l'état de veille. Le second appareil acoustique comprend une seconde unité de commande qui, lors de la réception de l'instruction à l'occasion de la réception d'une alimentation externe de puissance, passe à l'état de mise sous tension ou à l'état de veille conformément à l'instruction, et qui, lorsqu'il ne reçoit pas l'alimentation externe de puissance, maintient un état courant.
PCT/JP2022/004358 2021-02-16 2022-02-04 Système acoustique, procédé de commande de système acoustique, appareil acoustique, haut-parleur et appareil de distribution WO2022176641A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001359200A (ja) * 2000-06-12 2001-12-26 Yamaha Corp 無線オーディオ機器
JP2013062580A (ja) * 2011-09-12 2013-04-04 Sony Corp 音響再生装置および音響再生方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001359200A (ja) * 2000-06-12 2001-12-26 Yamaha Corp 無線オーディオ機器
JP2013062580A (ja) * 2011-09-12 2013-04-04 Sony Corp 音響再生装置および音響再生方法

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