WO2023058800A1 - Système sonore comprenant des haut-parleurs sans fil multicanaux, et son procédé de gestion de puissance - Google Patents

Système sonore comprenant des haut-parleurs sans fil multicanaux, et son procédé de gestion de puissance Download PDF

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Publication number
WO2023058800A1
WO2023058800A1 PCT/KR2021/013942 KR2021013942W WO2023058800A1 WO 2023058800 A1 WO2023058800 A1 WO 2023058800A1 KR 2021013942 W KR2021013942 W KR 2021013942W WO 2023058800 A1 WO2023058800 A1 WO 2023058800A1
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WIPO (PCT)
Prior art keywords
sound
speaker
output device
power
sound output
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Application number
PCT/KR2021/013942
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English (en)
Korean (ko)
Inventor
윤석호
최창호
배진완
김희수
김선민
정한샘
박현수
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020247008697A priority Critical patent/KR20240090144A/ko
Priority to PCT/KR2021/013942 priority patent/WO2023058800A1/fr
Publication of WO2023058800A1 publication Critical patent/WO2023058800A1/fr

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    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers

Definitions

  • the present invention relates to a sound system including a multi-channel wireless speaker and a power management method thereof, and more particularly, to a sound system including a multi-channel wireless speaker that provides sound based on the remaining battery level of the wireless speaker and the same It is about the power management method of
  • the sound output device outputs sound in conjunction with various electronic devices. Recently, demand for and research on a portable sound output device that can freely change its location, that is, a wireless speaker, is increasing.
  • a plurality of these wireless speakers can be combined and arranged to form a sound system that supports stereophonic sound with a sense of space.
  • Prior Document 1 discloses a method of generating a three-dimensional sound space in a direction desired by a user by combining/separating a plurality of wireless speakers.
  • the sound output device of Prior Document 1 has limitations in maximizing the three-dimensional sound effect because the wireless speakers cannot distinguish whether the combination is vertical or horizontal.
  • the present invention provides a sound system including a multi-channel wireless speaker and a power management method thereof to solve the above problems.
  • one object of the present invention includes a multi-channel wireless speaker that can be expected to provide optimal sound effects even when the battery level of some wireless speakers is insufficient when configuring a sound system by combining and arranging multi-channel wireless speakers. It is to provide a sound system and its power management method.
  • another object of the present invention is to provide a sound system including multi-channel wireless speakers that can further improve the use time of a stereophonic sound configuration through sound compensation between multi-channel wireless speakers and a power management method thereof. .
  • another object of the present invention is a sound system including a multi-channel wireless speaker with a more improved lifespan and power management thereof by operating so that a part of the multi-channel wireless speaker is not completely discharged and maintains the remaining battery capacity at a similar level. is to provide a way
  • a sound system including a multi-channel wireless speaker includes a plurality of sound output devices disposed in a space, and at least one of the plurality of sound output devices includes the plurality of sound output devices.
  • a communication module for receiving a signal for monitoring the power state of each device; and a control module, wherein the control module monitors power states of the plurality of audio output devices based on the signals, and satisfies a predetermined state condition among the plurality of audio output devices based on a result of the monitoring.
  • Detects the position of the first audio output device selects a second audio output device to perform a sound compensation operation on the basis of the detected location, and uses the selected second audio output device to generate information about the first audio output unit. Acoustic compensation operation is performed.
  • the predetermined state condition corresponds to a state in which the capacity of power is less than a reference value.
  • At least some of the plurality of sound output devices may include a battery module; A remaining battery capacity display module for measuring and displaying stored battery capacity; and a communication module for transmitting information about the measured battery capacity to the plurality of sound output devices.
  • At least some of the plurality of sound output devices receive the information about the battery capacity, and based on the received information, charge the power of their own battery module or the power stored in their own battery module. It is determined whether to provide the audio output device to another audio output device, and a power sharing operation corresponding to the determination is performed through at least one electrical connection means.
  • each of the plurality of sound output devices includes a gyro sensor and at least one magnetic connector
  • the control module A gyro of one of the plurality of sound output devices using each gyro sensor. ), the location of the first and second audio output devices is determined, and whether or not the audio output device is coupled and the coupled audio output device is recognized through the at least one magnetic connector.
  • the magnetic connector is coupled to a plurality of pogo pins disposed on one of the plurality of audio output devices, and the plurality of pogo pins recognizes the audio output device coupled to the magnetic connector. It includes a multi-channel wireless speaker, characterized in that it includes a device ID pin for
  • the bass output of the first audio output device when the power capacity of the first audio output device satisfies a condition that is smaller than a reference value, the bass output of the first audio output device is gradually reduced, and the bass output of the second audio output device is reduced.
  • the (bass) output performs an equalizer (EQ) function that gradually increases.
  • the sound compensation operation increases the bass output of the second audio output device, or A sound output method of the second sound output device is changed.
  • whether to increase the bass output of the second audio output device or change the sound output method depends on the location of the first audio output device.
  • the number of second audio output devices for performing the sound compensation operation varies according to the position of the first audio output device.
  • a power management method performed by a processor of a sound system including a multi-channel wireless speaker includes monitoring the power state of each of a plurality of sound output devices disposed in a space; detecting a location of a first audio output device that satisfies a predetermined state condition among the plurality of audio output devices as a result of the monitoring; selecting a second audio output device to perform a sound compensation operation based on the detected position; and performing a sound compensation operation on the first sound output device by using the selected second sound output device.
  • a computer program stored in a computer readable recording medium may execute any one of the methods described above on a computer.
  • sound imbalance due to unequal remaining battery power can be prevented by sharing power between a plurality of coupled/arranged wireless speakers, and some wireless speakers
  • sound loss occurs due to insufficient or discharged battery
  • the user when using multiple wireless speakers, the user can receive convenient and optimal sound effects without worrying about remaining battery power, so convenience and sound quality can be improved at the same time.
  • 1A to 1E are exemplary views of a combination example of a multi-channel wireless speaker applied to a sound system according to the present invention viewed from different directions.
  • FIGS. 2a and 2b are diagrams respectively illustrating a power transmission unit and a power reception unit related to multi-channel wireless speakers according to the present invention.
  • 3A to 3C are conceptual diagrams for explaining each configuration and operation of a transmission system and a reception system of sound signals transmitted and received between multi-channel wireless speakers according to the present invention.
  • Figure 4a is an exemplary flowchart for explaining a coupling logic of a satellite speaker and a woofer speaker capable of outputting noise-improved sound in a sound system according to the present invention
  • Figures 4b to 4d are exemplary conceptual diagrams related to Figure 4a.
  • 5A to 5D are conceptual diagrams for explaining a method of determining a combination and arrangement method of a satellite speaker and a woofer speaker in a sound system according to the present invention.
  • FIG. 6 is a flowchart illustrating a method of selecting a sound output mode based on a method of combining and arranging a satellite speaker and a woofer speaker in a sound system according to the present invention.
  • FIGS. 7A and 7C are exemplary conceptual diagrams and operational flowcharts for explaining a power management method for a multi-channel wireless speaker in a sound system. am.
  • 8a and 8b, 9a and 9b, 10a and 10b, and 11a and 11b are diagrams for describing a power management operation for each position when the battery level of the satellite speaker disposed in the sound system according to the present invention is low, respectively. are flow charts and conceptual diagrams.
  • 12A and 12B are graphs showing changes in sound output according to the remaining battery capacity in the sound system according to the present invention.
  • 13A to 13C are graphs showing EQ changes according to the remaining battery capacity in the sound system according to the present invention.
  • a sound system including a multi-channel wireless speaker and a power management method thereof according to the present invention will be described in detail.
  • a sound system according to the present invention may include at least one woofer speaker and a plurality of satellite speakers.
  • the 'satellite speaker' disclosed in this specification refers to a speaker capable of receiving and outputting sound wirelessly.
  • a satellite speaker may include a battery and receive power from a battery.
  • the battery of the satellite speaker may be charged through a cable connection or through another satellite speaker according to a power sharing method.
  • the 'woofer speaker' disclosed in this specification refers to a station that receives sound signals wirelessly and transmits them wirelessly to satellite speakers.
  • the woofer speaker may be configured as an integral system equipped with a plurality of satellite speakers.
  • the woofer speaker becomes a reference axis of a gyroscope (Gyro) for grasping the arrangement/combination position of a plurality of satellite speakers.
  • the woofer speaker operates by receiving wired power instead of a battery, and may include a contact terminal and a charging terminal to charge the combined satellite speaker.
  • the 'wireless speaker', 'sound output means', or 'sound output device' disclosed in this specification may mean only the above-described satellite speaker or woofer speaker, and may refer to a combination of the woofer speaker and a plurality of satellite speakers.
  • the 'wireless speaker' or 'sound output unit' disclosed below may be used as a woofer speaker, a satellite speaker, or a combination of a woofer and a satellite speaker.
  • the 'equalization function' disclosed in this specification refers to a function of processing, changing, or adjusting overall frequency characteristics of sound signals output from wireless speakers constituting a sound system.
  • the equalization function a specific frequency band of a sound signal output from a sound system can be boosted or reduced.
  • 1A to 1E are exemplary views of a combination example of a multi-channel wireless speaker applied to a sound system according to the present invention viewed from different directions.
  • a Chinese character form factor structure in which one woofer speaker and a plurality of satellite speakers are combined can be taken.
  • a plurality of satellite speakers may be combined on one woofer speaker 200 like a cake to form one form factor.
  • this form factor is a wireless speaker 100A or sound output means according to the above definition, looking more closely at the internal coupling structure shown in FIG.
  • a plurality of satellite speakers 100a, 100b, 100c,,,) are coupled so as to come into contact with each other in a 360 degree rotation direction, and a gyro sensor is provided inside each of the satellite speakers 100a, 100b, 100c,,,,, so that the relative coupling positions of each other can be determined.
  • . 1c is an example in which the maximum number of satellite speakers 100a, 100b, 100c, 100d, 100e, and 100f are combined with one woofer speaker 200
  • FIG. 1d is a view from above. As shown in FIGS. 1C and 1D, a hole is naturally formed inside due to the combination of the satellite speakers 100a, 100b, 100c, 100d, 100e, and 100f.
  • 1E shows only the woofer speaker 200 from which all of the mounted satellite speakers 100a, 100b, 100c, 100d, 100e, and 100f are removed.
  • the satellite speakers 100a, 100b, 100c, 100d, 100e, and 100f may be disposed around the woofer speaker 200, and the woofer speaker 200 and the satellite speakers 100a, 100b,
  • the relative positions of the satellite speakers 100a, 100b, 100c, 100d, 100e, and 100f disposed with respect to the woofer speaker 200 may be determined through the gyro sensor built into each of the 100c, 100d, 100e, and 100f. .
  • At least one woofer speaker and a plurality of satellite speakers are combined/arranged in various ways, and by taking a structure in which mutual power can be conducted between the combined/arranged wireless speakers, You can keep the remaining battery power.
  • the side that sends power becomes the 'power transmitter' and the side that receives power becomes the 'power receiver' when power is the criterion.
  • FIGS. 2a and 2b are diagrams showing a power transmission unit and a power reception unit related to multi-channel wireless speakers according to the present invention.
  • the power transmission unit shown in FIG. 2A may include a magnet S pole 10, a device ID 11, a ground 12, a magnet N pole 13, and a power supply 14 in order from the outside of the circle. .
  • the power receiving unit shown in FIG. 2B sequentially connects the magnet N pole 20, the device ID 21, the ground 22, the magnet S pole 23, and the power supply 24 from the outside of the circle.
  • the magnet S pole 10 of the power transmitter is coupled to the magnet N pole 20 of the power receiver, and the magnet N pole 13 of the power transmitter is coupled to the magnet S pole 23 of the power receiver. Through the coupling of the polarities opposite to the grounds 12 and 22, the power transmitter and the power receiver are strongly coupled, and the power 14 of the power transmitter is supplied to the power 24 of the power receiver.
  • the power transmitter side can recognize the type of wireless speaker coupled through the device ID 21 of the power receiver, and the power receiver side can recognize the type of wireless speaker that is coupled and supplied power through the device ID 11 of the power transmitter. can recognize That is, in each of the power transmission unit and the power reception unit, it is possible to check whether other wireless speakers are coupled, the type of the wireless speaker coupled, and the coupling method (eg, L/R speaker, center speaker, etc.) through the device ID pin.
  • the coupling method eg, L/R speaker, center speaker, etc.
  • 3A to 3C are conceptual diagrams for explaining each configuration and operation of a transmission system and a reception system of sound signals transmitted and received between multi-channel wireless speakers according to the present invention.
  • the woofer speaker can be regarded as a "wireless transmission system” since it provides a sound signal to each satellite speaker.
  • each satellite speaker receives a sound signal from a woofer speaker, it can be regarded as a "wireless reception system”.
  • a wireless transmission system ('woofer speaker') 200 receives sound data through an HDMI or SPDIF terminal.
  • the wireless transmission system can receive wired power through a USB connection terminal and perform woofer AMP output through Wifi or BT communication.
  • the MCU of the wireless transmission system 200 can recognize the ID of the coupled satellite speaker by recognizing the Pogo pins 111a and 111b of the satellite speaker coupled to the port through JFAG, and the gyro sensor built into the satellite speaker The combination method can be recognized through (140).
  • FIG. 3B briefly illustrates an example of a satellite speaker, in which a TX Pogo pin 111a and an Rx Pogo pin 111b are disposed on the upper and lower sides of the main body 101, and a gyro sensor 140 is embedded therein. It is done. As described above with reference to FIGS. 2A and 2B, magnets are mounted between the power sources 14 and 25 and the grounds 12 and 22 of the power transmitter and power receiver, respectively, so that the TX Pogo pin 111a of the satellite speaker Even if the and Rx Pogo pins 11b come close to the woofer speaker, they are easily coupled by a pulling force. In addition, the circular structure of the power transmission unit and the power reception unit provides an advantage of preventing reverse voltage.
  • Pogo pins 111a and 111b are respectively positioned on the upper and lower sides, but are not limited thereto, and two or more Pogo pins 111a and 111b may be provided on the upper and lower sides.
  • a wireless reception system ('satellite speaker') 100 may wirelessly receive a sound signal from the wireless transmission system 200 and output the received sound.
  • the wireless reception system 100 operates using the power of the battery.
  • another wireless speaker is seated on the charging terminal, that is, the Pogo pin 111a at the top. You can use a charging method, a charging cable connection method, or a combination of the two methods.
  • the wireless reception system 100 measures the battery capacity stored in the battery (charger) through the battery remaining amount display module (Fuel Gauge) 132, and connects other speakers and batteries through a communication module 133 such as Bluetooth. Information about capacity can be shared.
  • the wireless speakers in order to maintain a similar level of battery remaining between the coupled/placed wireless speakers of the Bogood, the wireless speakers (or satellite speakers) check their battery capacities and combine them. By transmitting to other wireless speakers, it should be possible to share information on the remaining battery power with each other.
  • the wireless reception system 100 performs these functions using a fuel gauge 132 and a communication module 133.
  • the wireless reception system 100 may share power with other satellite speakers through the DC IN 131a and the DC OUT 131b to charge the power of the battery or supply the power stored in the battery. .
  • the DC IN 131a and DC OUT 131b may be made of magnetic connectors so that cable connection is easy.
  • the magnetic connector is coupled to another magnetic charging port, according to the structure of FIGS. 2A and 2B, whether wireless speakers are coupled, device ID, and coupling method (left/right) may be recognized.
  • Figure 4a is an exemplary flowchart for explaining a coupling logic of a satellite speaker and a woofer speaker capable of outputting noise-improved sound in a sound system according to the present invention
  • Figures 4b to 4d are exemplary conceptual diagrams related to Figure 4a.
  • a combination form of wireless speakers is identified (410).
  • a plurality of satellite speakers may have a form factor combination form in which a plurality of satellite speakers are seated on a single woofer speaker in a cake-like shape (1).
  • it is not limited to this, and in other embodiments, it may have a different type of combination (sound bar 6.1 channel, etc.) (2), and in this case, in any one of 6.1 channels, stereo, and mono methods suitable for the arrangement type A sound may be output, or a sound may be output in a combination of two or more.
  • the wireless speaker has a form factor that rotates 360 degrees
  • the format of the sound source is checked (420). Then, based on the confirmation result, a channel is set and a sound source is transmitted (430). Then, all six satellite speakers constituting the form factor are simultaneously reproduced (440). At this time, it is checked whether synchronization with the woofer speaker has been achieved (450). If synchronization is not achieved, simultaneous playback of satellite speakers is repeated again (444). If synchronization is achieved, a noise removal or echo improvement operation is performed (460).
  • the timing of air inflow into a hole inside the form factor can also be synchronized. Specifically, air can flow smoothly through the streamlined structure of the form factor, the slit-shaped hole formed in the satellite speaker shown in FIG. 1c and the vent hole of the woofer speaker shown in FIG. 1e. Accordingly, 360-degree surround reproduction is possible.
  • a wireless speaker covered with a cap has a noise problem due to increased internal pressure. Therefore, a hole is required to maintain an appropriate pressure of the wireless speaker, and efficient air input and output through the hole is required.
  • air is drawn in and out along the slit in the form of a grill at the rear of each combined satellite speaker and the curved mechanical part.
  • the input and output of air are all made in the same direction. Accordingly, air input and output is performed in the same direction through the vent hole disposed at the top of the woofer speaker, creating a more efficient air flow during the same period of time. Accordingly, sound vibration, reverberation and sound quality inside the woofer speaker are improved.
  • FIGS. 4B to 4D An efficient air input/output operation will be described with reference to FIGS. 4B to 4D.
  • Cd 1.28
  • the reflected sound can be further improved.
  • sound is output automatically according to the arrangement method of the satellite speakers, and sound output can be determined by distinguishing whether the satellite speakers are combined vertically, horizontally, or vertically and horizontally.
  • 5A to 5D are conceptual diagrams for explaining a method of determining a combination and arrangement method of a satellite speaker and a woofer speaker in a sound system according to the present invention.
  • 5c and 5d are examples in which a plurality of satellite speakers coupled in the horizontal direction are arranged on the left and right with respect to the woofer speaker.
  • the wireless transmission system 200 that is, the gyro of each satellite speaker 100A, 100B in which the gyro of the woofer speaker is arranged is a standard.
  • the wireless transmission system 200 that is, the woofer speaker 200 can not only recognize whether the satellite speakers 100A and 100B are on the left side or the right side as shown, but also can recognize whether they are on the left side of the back (not shown). or right.
  • the woofer speaker 200 may also recognize a coupling method of each of the satellite speakers 100A and 100B.
  • the woofer speaker 200 recognizes that each of the satellite speakers 100A and 100B disposed on the left and right with respect to the woofer speaker position P is coupled in the vertical direction, as shown in FIGS. 5A and 5B.
  • the woofer speaker 200 is that each of the satellite speakers 100C and 100D disposed on the left and right with respect to the woofer speaker position P, as shown in FIGS. 5C and 5D, are coupled side by side in the horizontal direction. Recognizable.
  • the present invention may operate to select the output mode of the speaker based on the position of the satellite speaker and the selected operation mode.
  • 6 is a flowchart illustrating a method of selecting a sound output mode based on a method of combining and arranging a satellite speaker and a woofer speaker in a sound system according to the present invention.
  • the sound system (or the control unit of the sound system) according to the present invention may determine the location of each of the plurality of satellite speakers arranged (610). And, the sound system can determine whether the selected operation mode is the user control mode 620 or the automatic control mode 630 . Next, the number of connected satellite speakers can be checked (640). Then, the output method of the speaker may be differently controlled based on the confirmed arrangement structure of the connected satellite speaker (650). Specifically, while the sound system operates in a user control mode, an output method of a speaker according to a connected satellite speaker may be determined as follows. For example, when the number of connected satellite speakers is one, the sound system operates in a mono output mode.
  • the number of connected satellite speakers when the number of connected satellite speakers is two, it operates in a mono output method if the channel is one, and operates in a stereo output method otherwise. In addition, when the number of connected satellite speakers is 3 or 4, if the channel is one, it operates in a mono output method, otherwise it can operate in parallel with one center speaker output and stereo output method. In addition, if the number of connected satellite speakers is 5, if the channel is one, it operates as a mono output method, otherwise it determines whether it is a stereo output method, and if it is a stereo output method, it operates in parallel with one center speaker output and stereo output method. You can control the output to configure a new 5.1 channel. On the other hand, if the number of connected satellite speakers is 6, if it is determined that the stereo output method is not the case when the number of connected satellite speakers is 5, the 5.1 channel configuration and two speaker outputs can be controlled to operate in parallel.
  • an output method of a speaker according to a connected satellite speaker may be determined as follows.
  • the output method of the speaker is determined differently by additionally considering the X-axis and Y-axis directions of the positions of the arranged satellite speakers.
  • the number of connected satellite speakers As a result of detecting the location of the placed satellite speakers, if the Y-axis direction is the same, if the number of connected satellite speakers is one, it operates in a mono output method. And, if the number of connected satellite speakers is 2, it checks whether the ID pin of the port is connected and performs stereo output when the ID pin is connected. Otherwise, it can operate as a mono output or stereo output depending on whether there is only one channel. there is.
  • the number of connected satellite speakers is 3, it is checked whether the ID pin of the port is connected, and when the ID pin is connected, the number of TX/RX open is checked, so that TX:RX is 1:1 + ID pin open (open ) If the ratio is determined, the stereo output and the first satellite speaker as the center speaker (Center #1) are selected, and if TX:RX is 1:1, the stereo output and the second satellite speaker as the center speaker (Center #2). Selects a parallel speaker output method, and if the ID pin is not connected, it can operate as a mono output or stereo output + one center speaker output depending on whether there is one channel.
  • the number of connected satellite speakers is 4, it is determined whether the ID pin is connected or not, and when the ID pin is connected, the number of TX/RX open is determined, and TX:RX is determined as 1:1 + ID pin open ratio If TX:RX is 2:2, stereo output + speaker output with the 4th satellite speaker as the center speaker (Center #4). The method is selected and the operation when the ID pin is not connected is the same as when the number of connected satellite speakers is 3.
  • the output method for the case where the number of connected satellite speakers is 1, 2, or 3 is the same as the case where the Y-axis direction of the placed satellite speakers is the same.
  • the stereo output + the fourth satellite speaker as the center speaker Center All are the same except that the output method of #4) is selected.
  • the sound system including the multi-channel wireless speaker according to the present disclosure not only provides 360-degree surround sound with improved sound quality, but also provides a coupling method between multiple wireless speakers without additional settings or inputs. By self-recognizing the arranged position, a more improved sound output method can be selectively performed.
  • a sound system when a sound system is configured by combining and arranging multi-channel wireless speakers according to the present disclosure, while sound is output, power is shared between the combined/placed wireless speakers to have a similar level of battery capacity, , it operates to provide a more optimal sound effect even when some wireless speakers are discharged.
  • an appropriate equalizer (EQ, Equalizer) function with low battery consumption is applied to the corresponding wireless speaker with low battery level, and the surrounding wireless speakers Speakers also compensate for sound with an equalizer function, so that the use time of wireless speakers in a stereoscopic sound system can be further improved.
  • the lifespan of the wireless speaker can be improved by properly distributing the remaining battery capacity of the coupled/arranged wireless speaker to prevent complete discharge of the wireless speaker in operation.
  • FIG. 7A is a block diagram showing an exemplary configuration of a multi-channel wireless speaker in a sound system according to the present invention.
  • the acoustic system according to the present invention may take the form of a multi-channel wireless speaker structure in which one woofer speaker and a plurality of satellite speakers are combined/arranged.
  • at least one of the multi-channel wireless speakers constituting the sound system according to the present invention includes a communication unit 710, an input unit 720, an output unit 730, and an interface unit 740 as shown in FIG. 7A. ), a power supply unit 750, and a control unit 780.
  • FIG. 710 The configuration of FIG.
  • the woofer speaker and/or the satellite speaker may not include at least some of the components shown in FIG. 7A or may additionally include other components.
  • the communication unit 710 may include at least one of a plurality of antenna modules, a Bluetooth module, a Wi-Fi module, and a Li-Fi module, and may be configured to wirelessly communicate with other wireless speakers or wirelessly communicate with external electronic devices.
  • the input unit 720 turns on/off the power, up/down the volume, or connects/disconnects communication with other wireless speakers and/or external electronic devices. or one or more input means (eg, a button, a touch panel, a microphone, a camera, etc.) for inputting various commands related to other sound outputs.
  • the input means may include, for example, one or more buttons assigned to a specific function related to sound output.
  • the output unit 730 may include a sound output unit, a display module (not shown) for displaying various information, and/or a plurality of LED lights for displaying an operating state or for an alarm such as a warning.
  • the interface unit 740 may include a device ID pin for checking the type of speaker (or type of other external device). there is. For example, when a woofer speaker and a satellite speaker are coupled, the woofer speaker is coupled to the satellite speaker through ID pins of pogo pins 111a, 111b, and FIG. 3a disposed at upper and lower ends of the connected satellite speaker. It can recognize not only whether or not, but also the type of satellite speaker that is combined.
  • the interface unit 740 may include HDMI and SPDIF terminals capable of receiving sound data, and may include a contact terminal for charging a combined satellite speaker, a charging cable connection terminal, and the like.
  • the power supply unit 750 may include a charging cable terminal for wired charging and/or a battery module for battery charging.
  • the woofer speaker may operate by receiving power through a wired charging cable terminal of the power supply unit 750 .
  • the satellite speaker may operate by receiving power charged from the battery module or supplied with power charged to the battery module of another coupled satellite speaker. To this end, the power charged in the battery module built into the satellite speaker may be shared with all other combined satellite speakers.
  • information on the charge amount of the battery measured using the battery remaining amount display module 132 is transmitted through the communication module 133 to the combined wireless speaker (woofer speaker and satellite speaker).
  • the power supply unit 750 may be configured to include a magnetic connector so that the connection of the cable is easy, as shown in FIGS. 2A and 2B, and the pogo pin of the satellite speaker coupled to the magnetic connector, the device ID pin, and the gyro The type and combination/arrangement method of combined satellite speakers can be recognized using the sensor.
  • the controller 780 may be mounted on a Printed Circuit Board (PCB) (not shown) mounted inside the wireless speaker.
  • the controller 780 controls the overall operation of the wireless speaker.
  • the controller 780 determines the relative position of other wireless speakers coupled to the main body or disposed around, more specifically, the coupling method (vertical direction, horizontal direction) and the arrangement method (left / right / rear (rear) left / rear). (back) right) can be recognized, and the sound output mode and volume can be adjusted to provide optimal sound effects based on the recognized relative position.
  • the control unit 780 can determine the power state (on/off) and the amount of power (whether it is below a preset value) of a plurality of coupled/arranged wireless speakers, and some wireless speakers
  • a corresponding operation such as an equalizer (EQ) function may be performed.
  • the equalizer (EQ) function is used to further improve overall sound quality by boosting or reducing a specific frequency band of a sound signal output from a sound system. For example, a frequency band of 60 Hz creates a sense of space and fullness, and a frequency band of 600 Hz provides a sense of density and realism. Also, for example, a frequency band of 1K to 3KHz is suitable for providing clarity and clear sound (eg, voice), and a frequency band of 16KHz is suitable for high-pitched musical instruments.
  • 7b and 7c are exemplary conceptual diagrams and operational flowcharts for explaining a power management method of a multi-channel wireless speaker in a sound system.
  • a first wireless speaker 100A is located in the center with respect to the user, and second and third wireless speakers 100B and 100C are located on the left and right of the front with respect to the first wireless speaker 100A. ) is disposed, and fourth and fifth wireless speakers 100D and 100E are disposed on the left and right sides of the rear, respectively.
  • a subwoofer speaker 200' may be additionally disposed between the first wireless speaker 100A and the second wireless speaker 100B.
  • at least some or all of the first to fifth wireless speakers 100A to 100E have a structure in which at least one woofer speaker and a plurality of satellite speakers are combined (eg, horizontal/vertical directions). can take
  • the operation flow of the method for managing power of a multi-channel wireless speaker according to the present disclosure may be performed by a controller of the first wireless speaker 100A, that is, a center speaker or a processor of the entire sound system (hereinafter, , referred to as the "processor").
  • the power state of the combined/placed wireless speaker is monitored (701).
  • a position of a wireless speaker that meets a predetermined condition for example, a first sound output device is detected (702).
  • the predetermined condition may be whether or not the battery capacity satisfies a reference value or less.
  • the predetermined condition may be whether a wireless speaker disposed at a specific location satisfies a battery capacity of a standard value or less.
  • the detection location of the first audio output device may be the location of at least one of the first to fifth wireless speakers 100A to 100E.
  • the first sound output device may be one, or may mean a plurality of wireless speakers (groups) satisfying a predetermined condition among the first to fifth wireless speakers 100A to 100E.
  • a second audio output device to perform an audio compensation operation is selected, and an audio compensation operation for the first audio output device is performed using the selected second audio output device.
  • the second audio output device is determined differently according to the position of the first audio output device, and may be one or a plurality of wireless speakers excluding the first audio output device among the first to fifth wireless speakers 100A to 100E.
  • the sound compensation operation may be determined based on the location and number of selected second sound output devices.
  • the sound compensation operation may include equalizer (EQ) adjustment such as frequency band change, volume adjustment, sound synthesis, and the like.
  • the sound compensation operation may include performing the aforementioned power sharing function.
  • 8a and 8b, 9a and 9b, 10a and 10b, and 11a and 11b are diagrams for describing a power management operation for each position when the battery level of the satellite speaker disposed in the sound system according to the present invention is low, respectively.
  • FIGS. 8A and 8B are diagrams illustrating a power management method according to the present invention when the battery capacity of the first wireless speaker 100A, that is, the center speaker is low.
  • the power is on (801)
  • sound compensation is performed only with the wireless speakers located on the left and right of the center speaker (802). That is, the second wireless speaker 100B disposed on the front left and the third wireless speaker 100C disposed on the front right are selected as the second sound output device, and the sound of the center speaker is compensated for by 50%, respectively.
  • a bass means a level in a low frequency range, and is the opposite concept of a treble that changes a high frequency output. Changing the bass or treble can minimize the sense of heterogeneity caused by volume changes.
  • the first wireless speaker 100A when the first wireless speaker 100A is discharged, 50% of the bass output of the first wireless speaker 100A is combined with the second wireless speaker 100B and the third wireless speaker 100C, respectively. , slightly increasing the bass output of each wireless speaker.
  • the power of the first wireless speaker 100A if the power of the first wireless speaker 100A is on, it is determined whether the battery capacity (or the amount of charged power) is greater than or equal to a predetermined reference value (eg, about 20% battery capacity) ( 803). Otherwise, a sound compensation operation is performed on the wireless speakers located on the left and right of the first wireless speaker 100A and the center speaker (804). Specifically, the volume of the first wireless speaker 100A is reduced or the frequency bass is gradually reduced.
  • the bass output of the second wireless speaker 100B disposed on the front left side and the third wireless speaker 100C disposed on the front right side is gradually increased.
  • the sense of difference felt by the user is more minimized compared to simple volume control.
  • 9A and 9B are diagrams illustrating a power management method according to the present invention when the battery capacity of the third wireless speaker 100C located on the right side of the center speaker 100A is low.
  • the power of the first wireless speaker 100A that is, the third wireless speaker 100C disposed on the right side of the center speaker is turned on (901), and if it is discharged, the power of the center speaker and the center speaker is checked.
  • Sound compensation is performed using only the wireless speaker located on the left (902).
  • the second wireless speaker 100B and the center speaker 100A disposed on the front left are selected as the second sound output device, the center speaker synthesizes the sound shared by the third wireless speaker 100C, and the second The wireless speaker 100B each finely reduces the frequency bass output to further compensate for the sound of the 50% share of the center speaker.
  • the power of the third wireless speaker 100C is on, it is further determined whether the battery capacity (or the amount of charged power) is equal to or greater than a preset reference value (eg, about 20% battery capacity) ( 903). Otherwise, when the battery capacity of the third wireless speaker 100C is insufficient, the third wireless speaker 100C and the first wireless speaker 100A located in the center perform a sound compensation operation (904). In this case, the second wireless speaker 100B is not selected as a second sound output device for sound compensation. Specifically, first, the volume of the third wireless speaker 100C is reduced or the frequency bass is gradually reduced. Then, the sound of the third wireless speaker 100C is compensated by gradually increasing the bass output of the first wireless speaker 100A located in the center.
  • a preset reference value eg, about 20% battery capacity
  • 10A and 10B are diagrams illustrating a power management method according to the present invention when the battery capacity of the second wireless speaker 100B located on the left side of the center speaker 100A is insufficient.
  • the power of the first wireless speaker 100A that is, the second wireless speaker 100B disposed on the right side of the center speaker is turned on (1001), and if it is discharged, the power of the center speaker and the center speaker is checked.
  • Sound compensation is performed only with the wireless speaker located on the right side (1002).
  • the center speaker 100A and the third wireless speaker 100C disposed on the front right are selected as the second sound output device in FIG. is synthesized, and the frequency bass outputs are each finely reduced so that the third wireless speaker 100C additionally compensates for a 50% share of the center speaker's sound.
  • the power of the second wireless speaker 100B is on, it is determined whether the battery capacity (or the amount of charged power) is greater than or equal to a predetermined reference value (eg, about 20% battery capacity) (1003). . Otherwise, when the battery capacity of the second wireless speaker 100B is insufficient, the second wireless speaker 100B and the center speaker 100A perform a sound compensation operation (1004). In this case, the third wireless speaker 100C is not selected as the second sound output device for sound compensation. Specifically, the volume of the second wireless speaker 100B is reduced or the frequency bass is gradually reduced. And, by gradually increasing the bass output of the center speaker 100A, the sound of the second wireless speaker 100B is compensated.
  • a predetermined reference value eg, about 20% battery capacity
  • 11A and 11B are diagrams illustrating a power management method according to the present invention when the battery capacity of at least some of the fourth and fifth wireless speakers 100D and 100E located on the left and right rear of the center speaker 100A is insufficient. .
  • the power of the fourth wireless speaker 100D that is, the fourth wireless speaker 100D disposed on the left side of the rear with respect to the center speaker is on (1101), and if it is discharged, the rear (Rear)
  • a fifth wireless speaker 100E disposed on the right performs sound compensation (1102). Specifically, the sound output method of the fifth wireless speaker 100E disposed on the right side of the rear is changed to a mono method.
  • the power of the fifth wireless speaker 100E that is, the fourth wireless speaker 100D disposed on the right side of the rear with respect to the center speaker is turned on (1103), and if it is discharged, the rear (Rear)
  • the fourth wireless speaker 100D disposed on the left performs sound compensation (1104). Specifically, the sound output method of the fourth wireless speaker 100D disposed on the left side of the rear is changed to a mono method.
  • the present invention by sharing power between a plurality of coupled/arranged wireless speakers, it is possible to prevent sound imbalance due to unequal remaining battery power, and to prevent insufficient or discharged batteries of some wireless speakers.
  • a sound loss occurs due to a loss of sound, it is possible to provide more optimal sound effects without damaging the sense of space by performing sound compensation operations such as an EQ function through other satellite speakers in the vicinity.
  • the user can receive convenient and optimal sound effects without worrying about remaining battery power, so convenience and sound quality can be improved at the same time.
  • sharing power among a plurality of wireless speakers it is possible to reduce the case of complete discharge and improve the quality of life of the wireless speaker battery.
  • 12A and 12B are exemplary graphs illustrating a change in sound output according to the remaining amount of battery (or remaining amount of power) in the sound system according to the present invention.
  • FIG. 12A shows a volume change 1202 corresponding to a sound compensation operation according to a decrease in the reference battery capacity of the center speaker 100A ( FIG. 7B ).
  • the synthesized volume change 1202 corresponding to the sound compensation operation of the surrounding wireless speakers is shown in proportion to the decrease in the volume change 1202d.
  • the initial value of the battery capacity is set to 20% in consideration of setting the reference value of the battery capacity to about 20%, and the case of complete discharge is excluded and the minimum value of the battery capacity is set to 3%.
  • the degree of the volume change 1202 of the center speaker and the degree of the synthesized volume change 1202 of the surrounding wireless speakers do not match, and the synthesized volume change 1202 increases more gently.
  • the synthesized volume change 1202 is changed more minutely than the volume change 1202 to minimize a sense of heterogeneity. Accordingly, the user can receive optimal sound effects without feeling a sense of heterogeneity according to the change in synthesized volume.
  • the sound compensation operation is not performed until the battery capacity of the center speaker is equal to or greater than the reference value (about 20%)
  • the change in power consumption 1203 of the center speaker will proportionally decrease along with the decrease in battery capacity.
  • FIG. 12B when the battery capacity becomes smaller than the reference value (about 20%), a sound compensation operation is performed according to the present disclosure to gradually reduce the volume. At this time, the rate of decrease in the change in power consumption 1203 according to the decrease in battery capacity gradually decreases as the battery capacity decreases. That is, the power consumption of the center speaker is further reduced and controlled so as not to be discharged.
  • 13A to 13C are graphs showing an equalizer (EQ) change according to the remaining battery power in the sound system according to the present invention. This shows the change of EQ when the battery of the center speaker 100A described above with reference to FIGS. 8A and 8B is insufficient.
  • EQ equalizer
  • sound output change 1301, frequency bass output change 1302, and peripheral wireless speakers shows a bass output change 1303 according to the sound compensation.
  • the sound output change 1301 gradually decreases.
  • the frequency bass output change 1302 has the same value as the sound output at the reference value (20%) of the battery capacity, but gradually decreases as the battery capacity decreases.
  • the decrease rate of the bass output change 1302 is greater than the decrease rate of the sound output change 1301 .
  • the bass output change 1303 of the surrounding wireless speakers eg, 100B, 100C is gradually increased by this difference.
  • the bass output of the center speaker 100A gradually decreases, and in proportion to this, the bass output of the peripheral wireless speakers 100B and 100C gradually decreases, so that the bass ( Bass)
  • the bass output decreases from the first range 1310a to the second range 1310b.
  • the frequency bass output was reduced by about 71.5% to about -6db level.
  • the second audio output device that is, the second and third wireless speakers 100B and 100C, which perform an acoustic compensation operation against the change in power consumption of the center speaker when the battery is low, has a bass output. Since there is only a slight increase, it can be confirmed that the increase rate of power consumption is not large.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

La présente invention concerne un système sonore comprenant des haut-parleurs sans fil multicanaux qui, au moyen d'un processeur : surveille l'état de l'alimentation électrique de chacun d'une pluralité de dispositifs de sortie sonore agencés dans un espace ; détecte, en résultat de la surveillance, la position d'un premier dispositif de sortie sonore satisfaisant une condition d'état prédéfinie parmi la pluralité de dispositifs de sortie sonore ; sélectionne, sur la base de la position détectée, un deuxième dispositif de sortie sonore avec lequel effectuer une opération de compensation sonore ; et effectue une opération de compensation sonore pour le premier dispositif de sortie sonore à l'aide du deuxième dispositif de sortie sonore sélectionné. Par conséquent, une acoustique plus optimale peut être fournie en continu même lorsque l'alimentation électrique d'une portion des haut-parleurs sans fil combinés/agencés est insuffisante.
PCT/KR2021/013942 2021-10-08 2021-10-08 Système sonore comprenant des haut-parleurs sans fil multicanaux, et son procédé de gestion de puissance WO2023058800A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020247008697A KR20240090144A (ko) 2021-10-08 2021-10-08 다채널 무선 스피커를 포함하는 음향 시스템 및 그것의 전원 관리 방법
PCT/KR2021/013942 WO2023058800A1 (fr) 2021-10-08 2021-10-08 Système sonore comprenant des haut-parleurs sans fil multicanaux, et son procédé de gestion de puissance

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PCT/KR2021/013942 WO2023058800A1 (fr) 2021-10-08 2021-10-08 Système sonore comprenant des haut-parleurs sans fil multicanaux, et son procédé de gestion de puissance

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050088700A (ko) * 2004-03-02 2005-09-07 엘지전자 주식회사 홈 씨어터의 음성출력 제어 장치 및 방법
KR20130044494A (ko) * 2011-10-24 2013-05-03 삼성전자주식회사 무선 전력 전송을 이용한 사운드 시스템
KR20180002124A (ko) * 2016-06-28 2018-01-08 삼성디스플레이 주식회사 표시 장치
JP2018007191A (ja) * 2016-07-08 2018-01-11 オンキヨー株式会社 音声再生システム、音声再生装置、及び、スピーカー
US20180367893A1 (en) * 2017-06-15 2018-12-20 Htc Corporation Audio processing device, audio processing method, and computer program product

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050088700A (ko) * 2004-03-02 2005-09-07 엘지전자 주식회사 홈 씨어터의 음성출력 제어 장치 및 방법
KR20130044494A (ko) * 2011-10-24 2013-05-03 삼성전자주식회사 무선 전력 전송을 이용한 사운드 시스템
KR20180002124A (ko) * 2016-06-28 2018-01-08 삼성디스플레이 주식회사 표시 장치
JP2018007191A (ja) * 2016-07-08 2018-01-11 オンキヨー株式会社 音声再生システム、音声再生装置、及び、スピーカー
US20180367893A1 (en) * 2017-06-15 2018-12-20 Htc Corporation Audio processing device, audio processing method, and computer program product

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