KR101663987B1 - Apparatus for controlling of output of vertical type speaker set using target angle - Google Patents

Apparatus for controlling of output of vertical type speaker set using target angle Download PDF

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KR101663987B1
KR101663987B1 KR1020160054561A KR20160054561A KR101663987B1 KR 101663987 B1 KR101663987 B1 KR 101663987B1 KR 1020160054561 A KR1020160054561 A KR 1020160054561A KR 20160054561 A KR20160054561 A KR 20160054561A KR 101663987 B1 KR101663987 B1 KR 101663987B1
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speaker
information
delay time
speakers
distance
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KR1020160054561A
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Korean (ko)
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김형갑
오방현
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오방현
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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The present invention relates to a device for controlling output of a vertical speaker set using target angle information, and a device for controlling output of a vertical speaker set using target angle information according to an embodiment of the present invention, A distance information determination unit for determining the distance and the number of the speakers to determine the distance information between the neighboring speakers; a delay time determination unit for determining delay time of each speaker using the target angle information and the distance information, An output gain information generation unit for generating output gain information of each speaker using the vertical emission information of the sound outputted from the speaker set and the delay time information; And a control unit for controlling outputs of the respective speakers in accordance with the time information and the output gain information All.
Accordingly, it is possible to improve clarity of sound and understanding of words by adjusting the directivity angle in a narrow space by using a vertical speaker set.

Description

TECHNICAL FIELD [0001] The present invention relates to an output control device for a vertical speaker set using target angle information,

The present invention relates to a device for controlling output of a vertical speaker set using target angle information, and more particularly to a technique for setting a direction angle and a gain of individual speakers differently according to target angle information.

One characteristic that typically determines the performance of a loudspeaker is directivity. Adjusting the orientation angle of the loudspeaker is very difficult in an acoustic environment. Creating a highly intelligent orientation pattern in real architecture can be a crucial factor in creating desired sound results.

The directivity of the loudspeaker system is physically limited to the law of motion in the air. How the sound progresses in the air is as follows. It advances in a certain direction, reflects when there is an obstruction, diffracts when there is an obstruction, passes when there is an obstruction, and is absorbed when there is obstruction.

Because of this characteristic, existing speakers are very difficult to have directivity. However, the traditional way to control this property is to use a waveguide. This method is very useful for controlling short wavelengths. However, there are limitations in controlling the mid and low frequencies below 1 KHz. A large waveguide must be inevitably used and there is a problem that it can not be used for indoor construction with a limited size.

Korean Patent Registration No. 10-1086398 (published on Nov. 25, 2011) discloses a directivity-controllable speaker system using a plurality of microphones and a method thereof. The speaker system is provided with an impulse- And outputs the read compensator filter coefficient to the input audio signal to output the compensated filter coefficient to the speaker. In this way, And adjusting the directivity of the antenna.

However, the above-described conventional technique is merely for controlling the directivity, and there is a limit in that it is difficult to control according to the directivity pattern.

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a vertical speaker set capable of improving clarity of sound and understanding of words by controlling a steering angle in a narrow space, The present invention provides a device for controlling output of a vertical speaker set using target angle information that can overcome a limitation of a physical position and obtain a different sound effect by controlling an output gain by changing a position of a sound image.

The apparatus for controlling the output of the vertical speaker set using the target angle information according to the embodiment of the present invention may be configured to determine the length and the number of the speaker sets arranged in the vertical direction, A delay time information generator for generating delay time information of each of the speakers using target angle information of the sound outputted from the speaker set and the distance information; An output gain information generator for generating output gain information of each speaker using the emission information and the delay time information; and a control unit for controlling output of each speaker according to the delay time information and the output gain information .

The delay time information generation unit may calculate the delay time according to the following equation:

Figure 112016042657364-pat00001

Here, tn represents the delay time of the nth speaker among the speaker sets, c represents the speed of light, d represents the distance between the speakers, and? Represents the target angle information of the sound from the horizontal plane of the speaker set.

Also, the output gain information generator may calculate the delay time using the following equation when the vertical radiation information is a convergent type.

Figure 112016042657364-pat00002

Where t i n is the convergent delay time of the nth speaker of the set of speakers, c is the speed of light, L 0 is the distance between the origin of the sound from the center speaker of the set of speakers, θ n is the center speaker, And the angle between the n-th speaker and the n-th speaker, Hn represents a distance between the n-th speaker and the center speaker.

Further, when the vertical radiation information is of a divergence type, the delay time can be calculated using the following equation:

Figure 112016042657364-pat00003

Here, t o n is the divergent delay time of the nth speaker of the set of speakers, c is the speed of light, L i is the distance between the inner origin of the sound from the center speaker of the set of speakers, θ n is the center speaker, An angle between the origin and the nth speaker, and Hn represents a distance between the center speaker and the nth speaker.

The apparatus may further include an output gain information modifying unit for modifying each of the output gain information according to target spot information among the speaker sets.

Therefore, it is possible to increase the clarity of the sound and the understanding of the word by adjusting the directivity angle in a narrow space by using the vertical speaker set. By controlling the radiation pattern of the sound output from the vertical speaker set, And it is possible to obtain a different sound effect by controlling the output gain by changing the position of the sound image.

1 is a configuration diagram of a device for controlling output of a vertical speaker set using target angle information according to an embodiment of the present invention;
FIG. 2 is a flowchart of an output control method of an output control apparatus for a vertical speaker set using target angle information according to FIG. 1;
FIG. 3 is a diagram for explaining generation of delay time information among output control devices of a vertical speaker set using target angle information according to FIG. 1;
4 is an exemplary diagram for explaining generation of delay time information when the vertical emission information is converged among the output control devices of the vertical speaker set using the target angle information according to FIG.
FIG. 5 is an exemplary diagram for explaining generation of delay time information when vertical emission information is of a divergence type among output control devices of a vertical speaker set using target angle information according to FIG. 1;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of the functions in the embodiments, and the meaning of the terms may vary depending on the user, the intention or the precedent of the operator, and the like. Therefore, the meaning of the terms used in the following embodiments is defined according to the definition when specifically defined in this specification, and unless otherwise defined, it should be interpreted in a sense generally recognized by those skilled in the art.

FIG. 1 is a block diagram of an apparatus for controlling output of a vertical speaker set using target angle information according to an embodiment of the present invention. FIG. 2 is a block diagram of an output control apparatus of a vertical speaker set, Fig.

1 and 2, an apparatus 100 for controlling output of a vertical speaker set using target angle information according to an embodiment of the present invention includes a distance information determiner 110, a delay time information generator 120, An output gain information generation unit 130, and a control unit 140.

First, the separation distance information determination unit 110 determines the length and the number of the speaker sets 10 arranged vertically and determines the distance information between adjacent speakers (S110). In this case, the number of speakers may be changed according to the setting of the user, and the distance information between the speakers may be a predetermined value. The separation distance information determination unit 110 may output error information when the measured separation distance information between neighboring speakers is out of the error range with the preset separation distance information. This is to judge whether the distance between the speakers is within the error range in order to accurately calculate the delay time of each speaker to be described later.

Next, the delay time information generating unit 120 generates delay time information of each speaker using the target angle information and the distance information of the sound outputted from the speaker set 10 (S120). The delay time information is calculated separately from each other depending on the position of each speaker. The delay time information can set the delay time of each speaker differently from the horizontal plane of the plurality of speaker sets 10 according to target target angle information. As the delay time of the sound output from each speaker is set to be different, the sound output from the speaker located on the horizontal plane leads to a phenomenon in which the sound is outputted in an inclined form by the preset target angle information.

Specifically, the delay time information generating unit 120 can generate delay time information of each speaker using Equation (1).

Figure 112016042657364-pat00004

In Equation (1), tn represents the delay time of the nth speaker in the speaker set 10, c represents the speed of light, d represents the separation distance between the speakers, and? Represents the target angle information of the sound from the horizontal plane of the speaker set 10 .

Next, the output gain information generation unit 130 generates output gain information of each speaker using the vertical radiation information and the delay time information of the sound output from the speaker set 10 (S130). The output gain information generation unit 130 may reset the delay time information using the vertical emission information radiated from the speaker set 10 in the vertical direction. For example, vertical radiation information can be divided into divergent, convergent, and restrictive types. The divergent vertical radiation information indicates a form in which the sound of each speaker starts from the center point on the rear side of the speaker set 10 and diverges. The convergent vertical radiation information represents a form in which the sound of each speaker converges while converging toward the front of the speaker set 10. [ The limited vertical radiation information indicates a form in which the sound of each speaker is not collected at one point and the sound is outputted by being tilted at a predetermined angle from the speaker set 10. [

For example, the output gain information generation unit 130 may calculate the delay time using the following Equation (2) when the vertical radiation information is a convergent type.

Figure 112016042657364-pat00005

In Equation (2), t i n is the convergent delay time of the nth speaker of the set of speakers 10, c is the speed of light, L 0 is the distance between the center of the sound source of the sound from the center speaker of the set of speakers 10, Hn represents the distance between the center speaker and the n-th speaker, and Hn represents the distance between the center speaker and the n-th speaker. Here, when the angle between the outermost loudspeaker from the outermost loudspeaker set of the speaker set 10 is 30 degrees,? N has a value between +15 degrees and -15 degrees.

For example, the output gain information generator 130 may calculate the delay time using the following Equation (3) when the vertical emission information is a divergence type.

Figure 112016042657364-pat00006

In Equation 3, t o n is the divergent delay time of the nth speaker of the set of speakers 10, c is the speed of light, L i is the distance between the inner origin of sound from the center speaker of the speaker set 10, Hn is the distance between the center speaker and the nth speaker.

The output gain information generation unit 130 may adjust the output gain of each speaker included in the speaker set 10 according to the vertical emission information. For example, the gain of the reference speaker located at the center may be set to 0 dB, and the gain of the speaker located above and below the reference speaker may be set differently according to the angle information that is vertically radiated.

Gain (dB) 0 ° 30 ° 60 ° 90 ° Speaker 1 0 2 3 5 Speaker 2 0 One 2 4 Speaker 3 0 0 One 3 Speaker 4 0 0 0 One Speaker 5 0 0 0 -One Speaker 6 0 0 0 -One Speaker 7 0 0 0 One Speaker 8 0 0 One 3 Speaker 9 0 One 2 4 Speaker 10 0 2 3 5

In Table 1, it can be seen that the gain (dB) of each speaker varies according to the angle of the vertical radiation information. For example, in the case of having vertical radiation information of 30 degrees, the gain of the reference speakers 5 and 6 is set to 0 dB, and the gain can be increased toward the outermost one of neighboring speakers. In this manner, the gain between the reference speaker and the outermost speaker can be set up to -3 dB.

The control unit 140 controls the output of each speaker according to the delay time information and the output gain information. The delay time information and the output gain information may be controlled differently depending on the position of the speaker set 10, the target angle, and the like. In addition, the controller 140 may filter the frequencies to output only a certain range of frequency sounds. The control unit 140 can newly control the output as the target angle information is changed or the number or position of the speakers is changed.

Meanwhile, the apparatus 100 for controlling the output of the vertical speaker set using the target angle information according to the embodiment of the present invention may further include an output gain information correcting unit 150. The output gain information correcting unit 150 modifies and outputs the respective output gain information according to the target spot information among the speaker sets 10. [ The output gain of each speaker can be changed depending on which position the sound image of the sound source is set to as a line sound source such as the vertical speaker set 10.

Spot Speaker 5 Speaker 1 Speaker 10 Speaker 3 Speaker 1 0 6 -3 3 Speaker 2 0 5 -2 3 Speaker 3 0 4 -One 3 Speaker 4 0 3 0 3 Speaker 5 0 2 One 3 Speaker 6 0 One 2 0 Speaker 7 0 0 3 0 Speaker 8 0 -One 4 -One Speaker 9 0 -2 5 -2 Speaker 10 0 -3 6 -3

In Table 2, the output gain of the neighboring speakers is modified depending on which one of the vertical speaker sets 10 is set as the spot speaker by positioning the sound image. For example, if the speaker is positioned at the center of the speaker 5 or 6, the output gain is not corrected. However, if the spot is located at a specific position such as speaker 1, speaker 3, or speaker 10, .

3 is an exemplary diagram for explaining generation of delay time information among output control devices of a vertical speaker set using target angle information according to FIG.

Referring to FIG. 3, Xn represents the wavelength of sound output from the n-th speaker of the speaker set 10. d 1 represents the separation distance from the lowest speaker to the n-th speaker. d 2 represents the separation distance from the ground to the minimum speaker. represents the target angle information of the sound from the horizontal plane of the speaker set 10. S 1 represents the effective distance at which the sound output from the speaker set 10 affects the bottom surface. S 2 represents the ineffective distance that does not affect the ground from the vertical point of the speaker set 10. In this manner, the wavelength of the output sound of each speaker can be calculated according to the target angle information?, And the delay time can be set by dividing the wavelength of the output sound. In this case, the target angle information? Can be set differently according to the setting of the effective distance S 1 , which can be expressed by Equation (4).

Figure 112016042657364-pat00007

In Equation (4), the values of d 1 and d 2 are preset values, and S 1 and S 2 can be changed by changing the effective distance desired by the user. Thus, the target angle information? According to the setting of the effective distance S 1 can be obtained.

4 is an exemplary diagram for explaining generation of delay time information when the vertical emission information is converged among the output control devices of the vertical speaker set using the target angle information according to FIG.

Referring to FIG. 4, Xn represents the wavelength of the sound output from the nth speaker Sn of the speaker set 10. L 0 represents the distance between the center of the sound center of interest (P 0 ) from the center speaker of the speaker set 10. represents the angle between the center speaker So, the outer center origin P 0 and the nth speaker Sn, and Hn represents the distance between the center speaker So and the nth speaker Sn. Here, when the angle between the outermost loudspeaker and the center of eccentricity of the speaker set 10 is 30 degrees, the value of? May have a value between +15 degrees and -15 degrees. If Xn is obtained and divided by the speed of light, the delay time of the speaker is determined. This can be calculated through Equation (2) described above.

FIG. 5 is an exemplary diagram for explaining generation of delay time information when vertical emission information is of a divergence type among output control devices of a vertical speaker set using target angle information according to FIG. 1;

Referring to FIG. 5, Xn represents the distance between the n-th speaker Sn and the inward center point P i of the speaker set 10. L i is the distance between the inward origin (P i ) of the sound from the center speaker So of the speaker set 10 and θ is the angle between the center speaker So, the inside center point P i , , And Hn represents the distance between the center speaker (So) and the nth speaker (Sn). If Xn is obtained and divided by the speed of light, the delay time of the speaker is determined. This can be calculated through Equation (3) described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, Therefore, the present invention should be construed as a description of the claims which are intended to cover obvious variations that can be derived from the described embodiments.

10: Speaker set
100: Output control device
110: separation distance information determination unit
120: delay time information generating unit
130: output gain information generating unit
140:
150: Output gain information correction unit

Claims (5)

A separation distance information determination unit for determining length and number of speaker sets arranged in a vertical direction and determining separation distance information between neighboring speakers;
A delay time information generating unit for generating delay time information of each speaker using target angle information of the sound outputted from the speaker set and the distance information;
An output gain information generation unit for generating output gain information of each speaker using the vertical emission information of sound outputted from the speaker set and the delay time information; And
And a control unit for controlling outputs of the respective speakers according to the delay time information and the output gain information,
Wherein the delay time information generator is a vertical speaker set output controller using target angle information for calculating the delay time according to the following equation:
Figure 112016087756363-pat00016

Here, tn represents the delay time of the nth speaker among the speaker sets, c represents the speed of light, d represents the distance between the speakers, and? Represents the target angle information of the sound from the horizontal plane of the speaker set. delete The method according to claim 1,
Wherein the output gain information generation unit comprises:
Wherein the vertical emission information is convergent, and the target angle information for calculating the delay time using the following equation is used:
Figure 112016087756363-pat00009

Where t i n is the convergent delay time of the nth speaker of the set of speakers, c is the speed of light, L 0 is the distance between the origin of the sound from the center speaker of the set of speakers, θ n is the center speaker, And the angle between the n-th speaker and the n-th speaker, Hn represents a distance between the n-th speaker and the center speaker. The method according to claim 1,
Wherein the output gain information generation unit comprises:
And outputting the vertical angle information when the vertical radiation information is of a divergence type, using the target angle information for calculating the delay time using the following equation:
Figure 112016087756363-pat00010

Here, t o n is the divergent delay time of the nth speaker of the set of speakers, c is the speed of light, L i is the distance between the inner origin of the sound from the center speaker of the set of speakers, θ n is the center speaker, An angle between the origin and the nth speaker, and Hn represents a distance between the center speaker and the nth speaker. The method according to any one of claims 1, 3, and 4,
And an output gain information modifying unit for modifying each of the output gain information according to target spot information among the set of speakers.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101770092B1 (en) * 2017-01-12 2017-08-30 강기수 Smart lantern apparatus
KR101857390B1 (en) * 2017-06-26 2018-05-11 김옥경 Apparatus for controlling of directivity pattern of column speaker
KR101859951B1 (en) * 2017-07-03 2018-05-21 김옥경 Apparatus for controlling of vertical directivity pattern of speaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090058223A (en) * 2007-12-04 2009-06-09 삼성전자주식회사 Method and apparatus for focusing the sound through the array speaker
JP2013098824A (en) * 2011-11-02 2013-05-20 Mitsubishi Electric Corp Sound reproducer, sound reproduction system, sound reproduction method and video display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090058223A (en) * 2007-12-04 2009-06-09 삼성전자주식회사 Method and apparatus for focusing the sound through the array speaker
JP2013098824A (en) * 2011-11-02 2013-05-20 Mitsubishi Electric Corp Sound reproducer, sound reproduction system, sound reproduction method and video display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101770092B1 (en) * 2017-01-12 2017-08-30 강기수 Smart lantern apparatus
KR101857390B1 (en) * 2017-06-26 2018-05-11 김옥경 Apparatus for controlling of directivity pattern of column speaker
KR101859951B1 (en) * 2017-07-03 2018-05-21 김옥경 Apparatus for controlling of vertical directivity pattern of speaker

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