KR200198319Y1 - Apparatus for controlling a sound automatically - Google Patents

Abstract

The present invention relates to an automatic sound control device.

The present invention is applied to an acoustic device, the sound control device interlocked with the sound main unit, the ambient noise input unit for inputting and amplifying the surrounding noise signal; An ambient noise analyzer configured to receive the input and amplified ambient noise from the ambient noise input unit and measure the magnitude or magnitude / spectrum of the ambient noise to analyze current ambient noise; A control unit for generating a volume level control signal to set a volume level value corresponding to ambient noise measured from a volume level table set differently according to the noise level of the surrounding environment based on the ambient noise measurement result of the ambient noise analyzer; A volume control unit for adjusting a volume of a sound signal to be output by a corresponding volume level when a volume level control signal for selecting a specific volume is applied from the controller; And a sound signal output unit for outputting a sound signal of the sound main apparatus to be output at a volume level adjusted by the volume control unit.

The present invention, as well as being able to listen to the sound information provided by the sound equipment in an optimal state, as well as can be applied to the classroom of the office or school of the company can create a great effect.

Description

Acoustic automatic control device {APPARATUS FOR CONTROLLING A SOUND AUTOMATICALLY}

The present invention relates to an automatic sound control device, and more particularly, a sound that allows the volume of the sound signal output from audio equipment such as audio, TV, CD player, cassette, radio, mobile phone to be automatically adjusted according to the ambient noise It relates to an automatic control device.

In general, there are many sound devices (audio, TV, CD player, cassette, radio, mobile phone, etc.) that can listen to sound information such as voice and music in the living spaces around them, and all of them use sound information called sound. Will be heard.

The sound signal of such an acoustic device is an absolute that always outputs the same size sound signal when the volume is set once, but since the human hearing function is relative, even if the sound signal of the same level is output from the sound devices, There is a difference in the perceived size. That is, even if the sound signal of the same level is output from the sound equipment, it will feel small in the noisy space, and it will feel large in the quiet place. Accordingly, most of the sound equipment has its own volume control unit so that the user can manually adjust the volume according to the state of the surrounding environment.

For example, if you are listening to sound information from an audio device and it is difficult to hear due to ambient noise, turn up the volume. If the sound is too loud because the surroundings are too quiet, adjust the volume manually. Will be done. However, it is inconvenient for the user to adjust the volume according to the change of the surrounding environment, and even if the size of the acoustic signals output from the sound equipment is not suitable under the current surrounding environment, It could not be adjusted from the user by the situation where adjustment could not be made. The unacceptable acoustic signal may also stimulate stress and discomfort in human nerves.

In a sports stadium or a lecture hall, the audience and the audience enter the room while adjusting the sound level of the initial speaker, and when external noise is generated by the audience and the audience, the moderator outputs the voice in the corresponding tone. It is necessary to make the sound level or reset the sound level, but there is an inconvenience that the audience and the audience can hear the moderator's voice.

In addition, in a building of a school, apartment or company equipped with its own broadcasting room, the sound transmitted from the broadcasting room is output through the speaker of the room where the sound level is set to the same level. There is a problem that the message voice is not properly received.

In order to alleviate some of the problems of the sound equipment, a number of techniques for automatically adjusting the volume of the sound equipment have been proposed. For example, when the distance between the sound equipment and the listener is far, the volume is increased, and when the distance is close, the volume is decreased. As a result, a technology for automatically adjusting the volume according to the distance has been disclosed, but this is a problem of automatically adjusting the volume only by the distance between the audio device and the listener, which does not consider the noise level of the surrounding environment, which is an important factor for the human listening function. Will be.

In addition, there has been disclosed a technique of adjusting the volume at all times with the input value of the acoustic state normally set by the user regardless of the recorded state or the broadcast state received, but this does not take into account the noise level of the surrounding environment. There is a problem that the volume is adjusted only to the sound state set up. That is, the above-mentioned sound equipment is inconvenient to manually control the volume according to the noise level of the surrounding environment because the acoustic device cannot adjust the volume in consideration of the noise of the surrounding environment including the voice which greatly affects the human listening function. This will be.

Accordingly, an object of the present invention is to provide a sound automatic control device that can automatically adjust to the volume level corresponding to the noise of the surrounding environment when the sound signal output from the sound equipment to solve the above problems.

Another object of the present invention is to provide an automatic sound control method applied to an audio device that can automatically adjust the volume level in response to the noise of the surrounding environment including the surrounding voice when the sound signal output from the sound device.

Another object of the present invention is to improve the listening level when receiving sound information from audio equipment such as an audio television CD player cassette radio and a mobile phone, as well as to relate to the sound level initially set in a sports stadium or a lecture place. It is to provide an automatic sound adjusting device so that the sound level can be automatically adjusted in response to external noise by the audience or the audience without.

1 is a block diagram of an automatic sound adjusting device according to the present invention,

2 is a block diagram of an automatic sound adjusting device according to another embodiment of the present invention;

3 is a control flow diagram illustrating an example of a method for automatically adjusting sound implemented through the apparatus for automatically adjusting sound of FIGS. 1 and 2;

4 is a control flowchart of a method for resetting to a volume level according to a surrounding environment determination and the surrounding environment of the acoustic apparatus of FIG. 3.

<Description of the symbols for the main parts of the drawings>

10: control unit 20: volume control unit

30: sound signal output unit 40: ambient noise analyzer

50: peripheral noise input unit 60: memory

70: sound host

The present invention for achieving the above object is based on the ambient noise input unit for inputting the ambient noise signal, the ambient noise analyzer for analyzing the ambient noise input from the ambient noise input unit, and based on the ambient noise measurement results of the ambient noise analyzer A control unit for generating a volume level control signal automatically set to a volume level value set in advance in the volume control table, and a sound signal to be output as much as a corresponding volume level when a volume level control signal for selecting a specific volume is applied from the control unit. Characterized in that consisting of a volume control unit for adjusting the volume of the sound signal output unit for outputting the sound signal.

According to the above feature, the present invention provides a first process of continuously receiving the ambient noise through the ambient noise input unit when an acoustic device is driven, and a second process of analyzing the magnitude of the ambient noise when the ambient noise is input; A third process of determining a volume level adjustment value corresponding to the magnitude of the analyzed ambient noise and the current ambient environment from the volume adjustment table; and resetting the volume of the volume level adjustment unit to the determined volume level adjustment value. And a fifth process of outputting a sound signal from the sound main apparatus at the reset volume level.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a block diagram of a sound control apparatus applied to an acoustic apparatus according to a first embodiment of the present invention. The sound control apparatus applied to the sound apparatus according to the first preferred embodiment of the present invention includes a control unit 10, a volume control unit 20, a sound signal output unit 30, a peripheral noise analyzer 40, a peripheral noise input unit ( 50, a memory 60, and an acoustic main device 70.

The ambient noise input unit 50 is configured as an example of a microphone to receive the ambient noise signal, amplify it, and output the amplified signal to the ambient noise analyzer 40. The ambient noise input unit 50 may receive the ambient noise for each of the peripheral noise check periods set by the control of the controller 10, or may continuously receive the ambient noise while the sound device is being driven. In addition, the ambient noise input unit 50 may use a sampling method for sampling the ambient noise inputted to the ambient noise analyzer.

The ambient noise analyzer 40 analyzes the ambient noise input from the ambient noise input unit 50 to measure the magnitude or magnitude / spectrum of the ambient noise, and then applies the measurement result of the ambient noise to the controller 10. The ambient noise input unit 50 and the ambient noise analyzer 40 may be configured as one module.

The controller 10 applies a volume level control signal corresponding to the volume level control unit 20 according to the noise level of the surrounding environment based on the measurement result of the ambient noise. At this time, the control unit 10 selects the volume level corresponding to the noise of the surrounding environment from the volume control table previously stored in the memory 60, the volume control table is, for example, as shown in Table 1 below Different volume level values are set according to the level of noise level.

Ambient noise level (dB) Surrounding condition Volume level adjustment a to b Quietness Down-regulation b to c normal Invariant (Keep Existing Values) c to d noise Up-regulation

Here, the a, b, c, d refers to the size measured in decibels (dB) of the ambient noise, the volume level control value according to the ambient noise degree can be modified in various ways, the volume control After setting the threshold value of the ambient noise in the table, the volume control table may be configured to adjust the volume value upward by a predetermined level only when the threshold value of the ambient noise is greater than or equal to the threshold value. The volume control table may be stored in a separate memory 60 or in a storage area of the controller 10. In addition, when the peripheral noise check period is set, the control unit 10 applies a control signal for commanding the peripheral noise input to the peripheral noise input unit 50 when the peripheral noise check period is reached.

The volume control unit 20 manually selects a volume level or, when a volume level control signal is applied from the control unit 10, outputs the sound signal through the sound signal output unit 30 by a corresponding volume level. Adjust the volume. The volume control of the volume control unit 20 is performed by controlling the sound amplification gain by a value controlled by the user or the control unit 10 by the output size of the sound signal received from the sound host device 70.

The sound signal output unit 30 outputs the sound signal of the sound main apparatus 70 to be output at a volume level adjusted by the volume control unit 20.

The sound main apparatus 70 means a component that performs an original function of the sound apparatus, and may be, for example, audio, television, CD player, cassette, radio, mobile phone, or the like. The sound host device 70 outputs a sound signal to be output from the volume control unit 20 through the sound signal output unit 30.

2 is a block diagram of a sound control device applied to an acoustic device according to a second embodiment of the present invention, the sound control device according to a second embodiment of the present invention is a control unit 100, the sound main device 110 ), The display unit 120, the ambient noise analyzer 130, the ambient noise input unit 140, the volume control unit 150, the sound signal output unit 160, and the key input unit 170. The functions and operations of the components of the second embodiment of the present invention are the same as those of the components of the first embodiment of the present invention, except for the controller 100, the key input unit 170, and the display unit 120. Do. In addition, the second embodiment of the present invention shows that the memory 101 is provided in the control unit 100. The key input unit 170 is provided with a plurality of keys such as a volume control key to apply a key signal to the control unit 100 based on the user's key presses. The display unit 120 displays the noise level of the surrounding environment and the currently set volume level value, and displays various information according to the sound device under the control of the controller 100.

According to the present invention, a method for automatically adjusting the sound according to the noise level of the surrounding environment includes: receiving ambient noise when the acoustic device is driven; analyzing ambient noise when the ambient noise is input; The method includes determining a surrounding environment based on a surrounding noise, resetting to a volume level corresponding to the determined surrounding environment, and outputting a sound signal at the reset volume level.

3 and 4 illustrate a preferred embodiment of a method for automatically adjusting sound according to the noise level of the surrounding environment according to the present invention through the configuration of the sound control device of FIG. 1, which is the first embodiment of the present invention. Explain through. FIG. 3 is a control flow diagram illustrating an example of a method for automatically adjusting the sound of an acoustic device implemented through the sound control device of FIG. 1, and FIG. 4 is a view illustrating a surrounding environment of the sound device of FIG. 3 and a volume according to the surrounding environment. A control flow diagram showing an example of a method for resetting to a level.

First, in step 301 of the flowchart shown in FIG. 3, the controller 10 checks whether an acoustic apparatus including the acoustic main apparatus 70 is being driven, and proceeds to step 303 if the acoustic apparatus is being driven. In step 303, the control unit 10 outputs the sound signal from the sound main apparatus 70 through the sound signal output unit 30 at the last set volume level. After that, the control unit 10 proceeds to step 305 to check whether the ambient noise is input through the peripheral noise input unit 50 and proceeds to step 307 if the ambient noise is input, and if the ambient noise is not input, step 313. Proceed. In this case, the input of the ambient noise may be continuously input while the sound device is being driven, and after setting the peripheral noise check period, when the peripheral noise check period is reached, the controller 10 to the peripheral noise input unit 50. You can also enter the ambient noise input command. When the controller 10 detects the input of the ambient noise in step 305, the controller 10 proceeds to step 307 and analyzes the ambient noise input through the ambient noise analyzer 40. The input method for analyzing the ambient noise may, for example, analyze magnitude (dB) or magnitude (dB) and spectrum of the ambient noise input through a microphone (MIC). The method for analyzing the magnitude of the ambient noise (dB) is a method of measuring the total size of the mixed sound information such as the mixed voice, the music sound, and the mechanical sound of a person input through the microphone, which is the ambient noise input unit 50, and thus is already known. Detailed description will be omitted. In addition, the method of analyzing the spectrum together with the magnitude (dB) analysis is a method for determining the surrounding environment when the sound control device according to the present invention is applied to a mobile phone or a portable cassette. By analyzing this, we can determine what environment the current place is under. For example, in the case of a concert, most of the frequency spectrum of the sound information from the instruments has a specific level of high frequency properties, so when the spectrum of this level is detected, it may be determined that the concert is held. Based on the ambient noise analysis method, the controller 10 determines the surrounding environment through the ambient noise analyzed in step 309 and the volume adjustment table set in advance as shown in Table 1 above. The control signal for resetting to the corresponding volume level is applied to the volume adjusting unit 20 to reset the volume. Then, in step 311, the control unit 10 outputs the sound signal from the sound main device 70 at the volume level reset in response to the surrounding environment through the sound signal output unit 30. In step 313, the controller 10 ends when the driving of the sound device is selected, and returns to step 305 when the sound device continues to be driven. Continuously adjusts the volume level.

Meanwhile, a specific example of the method for resetting the surrounding environment and resetting the volume level corresponding to the determined surrounding environment in step 309 will be described with reference to the flowchart of FIG. 4. 4 is a method of implementing a method of designating a reference level of ambient noise and determining whether it is in a quiet state, a normal state, or a noise state, and adjusting the volume level to a specified volume level according to the state of the surrounding environment.

In FIG. 3, when the peripheral noise analysis of step 307 is completed, the controller 10 sets a reference level preset in the memory 60 or the external memory 60 provided in the controller 10 in advance. If the analyzed ambient noise corresponds to the reference level, the controller proceeds to step 403 and controls to maintain the volume level set by the user. If the ambient noise does not correspond to the reference level, the controller proceeds to step 405. do. In step 405, the controller 10 determines whether the analyzed ambient noise is greater than or equal to the reference level. If the ambient noise is greater than or equal to the reference level, the controller 10 proceeds to step 407. The controller 10 increases to the volume level set to the ambient noise greater than or equal to the reference level. If it is not above the reference level, go to step 409. In step 409, if the analyzed ambient noise is less than or equal to the reference level, the controller 10 proceeds to step 411; otherwise, returns to step 401. In step 411, the control unit 10 controls to adjust downward to the volume level set in the ambient noise below the reference level. After the steps 403, 407, and 411 are performed, the controller 10 proceeds to step 311 of FIG. 3. The method for setting the volume level according to the ambient noise according to the flowchart of FIG. 4 has been described by the example of Table 1, for example, the analyzed ambient noise is included in the reference levels b to c (dB) of Table 1 above. If the ambient noise condition is normal, the volume level is maintained at the existing value. If the ambient noise is a level of b ~ c (dB) below the reference level b ~ c (dB), the ambient level is determined to be quiet and the volume level is determined. If the ambient noise is at the level of b ~ c (dB) or more than the c ~ d (dB) level of the reference level, the ambient noise is determined to be a noise state and controls to adjust the volume level adjustment upward. In this case, the degree of ambient noise / main transition state and the volume level adjustment value can be arbitrarily adjusted, and the classification level can be modified as necessary.

Next, a preferred embodiment of the automatic sound adjustment method automatically adjusted according to the noise level of the surrounding environment according to the present invention through the configuration of the sound control device of FIG. Based on the first embodiment of FIG. 3 and FIG. 4, the same process as in the method of FIG. 3 and FIG. 4 may be performed. However, a few steps may be added through the sound control device according to the second embodiment of the present invention, which is set by the sound auto adjustment mode and release key on the key input unit 170 of the sound control device. Only when the mode is set, the automatic adjustment of the sound as shown in the flowcharts of FIGS. 3 and 4 can be performed, and when the automatic adjustment mode of the sound is released, a method of adjusting the volume of the sound by the conventional method is provided. It is to be used. In addition, a process for displaying various types of information on the display unit 120 according to the setting and release of the automatic sound adjustment mode is added.

In addition, if a situation in which the volume level needs to be adjusted by analyzing the ambient noise occurs, a process of asking the user whether to adjust the volume may be added, which is a case in which the user deliberately increases or decreases the volume.

In addition, when a situation that needs to adjust the volume level according to the ambient noise occurs, it is possible to display the situation to inform the user and to adjust the volume level arbitrarily by the user. That is, the user recognizes the current volume level adjustment situation according to the ambient noise so that the user can directly adjust the volume level to an arbitrary level value.

If a situation arises in which a volume level needs to be adjusted, but the user arbitrarily adjusts the volume level value, the user may arbitrarily set the reference level of the ambient noise so as to change the reference level value of the ambient noise according to the volume level. It may be.

In addition, it is possible to install the automatic sound control device according to the present invention to a speaker through a microphone or a microphone, such as sports stadiums, lecture venues to automatically adjust the volume of the speaker to a value corresponding to the external noise when the external noise occurs, In addition, this automatic sound control device will not need to be attached to the installation site.

The present invention implements an audio automatic control device and method that automatically adjusts to a volume level corresponding to the noise of the surrounding environment when the sound signal is output from an audio device such as audio, CD player, cassette, mobile phone, etc. There is an effect that can listen to the provided sound information.

In addition, it is possible to automatically adjust the output volume level of the sound information according to the ambient noise, so that it can maintain smooth call quality when applied to the communication terminal, and can produce a great effect even when applied to various language practice and test equipment. Will be.

In addition, when the automatic sound control device of the present invention is installed in a sound field such as an athletic stadium or a lecture place, the sound level of the speaker is automatically adjusted in response to external noise, so that the presenter can control the start of the game or performance. It will be effective enough to receive them.

In addition, if a sound automatic control device is installed in a classroom of a school equipped with its own broadcasting room, each furniture of an apartment, or each office of a company, even if a noise occurs in the corresponding room, the sound of the broadcasting room corresponding to the sound is transmitted through the speaker. Since the output is effective, the listener can hear the message of the broadcasting room accurately.

As described above, in the detailed description of the present invention has been described with reference to specific embodiments, various modifications will be possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be determined by the equivalents of the utility model registration claims as well as the scope of the utility model registration claims described below.

Claims (4)

In the sound control device applied to the sound equipment and interlocked with the sound main device, A peripheral noise input unit for inputting and amplifying a peripheral noise signal; An ambient noise analyzer configured to receive the input and amplified ambient noise from the ambient noise input unit and measure the magnitude or magnitude / spectrum of the ambient noise to analyze current ambient noise; A control unit for generating a volume level control signal to set the volume level value corresponding to the ambient noise measured from the volume level table set differently according to the noise level of the surrounding environment based on the ambient noise measurement result of the ambient noise analyzer Wow; A volume control unit for adjusting a volume of a sound signal to be output by a corresponding volume level when a volume level control signal for selecting a specific volume is applied from the controller; And And a sound signal output unit for outputting a sound signal of the sound main unit to be output at a volume level adjusted by the volume control unit. The method of claim 1, And a memory in which the volume control table is stored. According to claim 1, wherein the sound automatic control device, Sound auto-adjustment mode key and the sound auto-adjustment release key is provided, the sound auto-adjusting device further comprises a key input unit for setting or releasing the sound auto-adjustment mode. The method of claim 3, And a display unit for displaying the setting and release state of the automatic sound control mode, the noise level of the surrounding environment, the currently set volume level, and the like.