KR0172479B1 - Automatic sound control method by audiometry and apparatus therefor - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice processing apparatus of a TV receiver, and more particularly, to an apparatus and a method for automatically adjusting volume by a hearing test to improve the need to readjust the volume in response to sudden volume fluctuations during TV channel changes and viewing distance shifts.

The received video and audio signals have different input strengths for each channel depending on the distance between the transmitter and the repeater. In particular, satellite broadcasting has a much higher input strength than general signals, and at that time, it is also affected by the climatic environment and the viewing distance of the viewer, so that the viewer feels the necessity of adjusting the volume every time the channel is changed. You must adjust the volume as needed.

In order to solve the conventional problems, the present invention enables the viewer's listening ability test to store the listening level of the viewer in the microcomputer, and then detects the level of the audio signal output to the speaker and outputs the user's listening power. By comparing the level of the appropriate audio signal according to the test and setting distance, the volume can be automatically adjusted to reduce the inconvenience for viewers to readjust the optimal volume changed by the internal and external conditions of the TV. In this condition, viewers will be able to watch TV.

Description

Automatic volume control device and method by listening test

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice processing apparatus of a TV receiver, and more particularly, to an apparatus and a method for automatically adjusting volume by a hearing test to improve the need to readjust the volume in response to sudden volume fluctuations during TV channel changes and viewing distance shifts.

As shown in FIG. 1, the conventional TV audio processing apparatus includes a tuner unit 22 for converting a TV signal received from the antenna 21 into an intermediate frequency, and amplifying the TV signal converted to an intermediate frequency. And an intermediate frequency processor 23 for separating the video signal and the audio signal, a detector 24 for detecting the audio signal output from the intermediate frequency processor 23, and a viewer for inputting data to adjust the audio. The remote controller 25, the microcomputer 26 which controls the voice amplifier 27 by adjusting the volume of the viewer input through the remote controller 25, and the detector 24 under the control of the microcomputer 26. And a speaker 28 which adjusts the volume and tone of the voice signal outputted from the voice amplifier 27 to amplify and output the voice signal amplified and output from the voice amplifier 27 to the outside. .

In the conventional TV voice processing apparatus configured as described above, the TV signal received through the antenna 21 is converted into an intermediate frequency in the tuner unit 22, and the TV signal converted into an intermediate frequency in the tuner unit 22 is intermediate. The frequency processor 23 separates the video signal and the audio signal.

Thereafter, the voice signal separated and output from the intermediate frequency processor 23 is detected by the detector 24 and applied to the voice amplifier 27, and the voice amplifier 27 is applied from the detector 24. The audio signal is amplified and output to the outside for the viewer to hear through the speaker 28.

At this time, the microcomputer 26 outputs a control signal according to the volume adjustment data inputted by the viewer through the remote controller 25, and the audio amplifier 27 outputs the control signal output from the microcomputer 26. It receives the input and adjusts the volume and tone is output to the speaker 28.

However, the received video and audio signals have different input strengths for each channel depending on the distance between the transmitter and the repeater. In particular, satellite broadcasting has a much higher input strength than general signals, and at that time, the viewer may feel the necessity of adjusting the volume every time the channel is changed because it is also affected by the climatic environment and the viewing distance of the viewer.

As described above, the conventional TV audio processing apparatus requires the viewer to adjust the volume as needed.

In order to solve the conventional problem, the present invention performs a hearing test of the viewer and then determines the hearing level of the viewer and stores it in the microcomputer and detects the level of the audio signal output to the speaker using the reference level as the voice. The sound level is automatically adjusted by comparing the level with the appropriate audio signal level according to the user's listening test and setting distance.

1 is a block diagram of a conventional TV audio processing apparatus.

2 is a block diagram of an automatic volume control device according to the present invention listening power test.

Figure 3 is a flow chart showing the process of listening test in the automatic volume adjustment method according to the listening test of the present invention.

4 is a sound level determination application according to the listening level and the viewing distance in the automatic volume adjustment method according to the listening test of the present invention.

Figure 5 is a flow chart showing the process of the automatic volume control method according to the test of the present invention.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

Figure 2 is a block diagram of the automatic volume control apparatus according to the present invention listening power test, the configuration and operation of the automatic volume control device according to the present invention listening power test with reference to Figure 2 as follows.

A tuner unit 2 for converting a TV signal received from the antenna 1 into an intermediate frequency, an intermediate frequency processing unit 3 for amplifying the TV signal converted to an intermediate frequency, and separating the video signal and an audio signal; A detector 4 for detecting a voice signal output from the intermediate frequency processor 3, a remote controller 5 for inputting data by the viewer to control the voice, and data input through the remote controller 5 After controlling each part to determine the hearing test and hearing level, the microcomputer 6 automatically adjusts the volume, and the volume and tone of the audio signal output from the detector 4 under the control of the microcomputer 6 are adjusted. The amplification output by the voice amplifier 7, the speaker 8 which outputs the voice signal amplified by the voice amplifier 7 to the outside, and the microcomputer 6 under the control of the listening power test. In order to switch Is a switch unit 9, an oscillator 10 for outputting an oscillation frequency for listening power test, a level detector 11 for detecting the level of the audio signal output from the voice amplifier 7, and a level detector And a level comparison section 12 for comparing the level detected in (11) with the reference level of the hearing grade by the listening test determined by the microcomputer (6).

FIG. 3 is a flowchart showing a process of performing a method of performing a hearing test in the microcomputer 6 of the present invention. Referring to FIG. 3, the process of the listening test is as follows.

When the listening power test is set, the first process of switching the switching unit 9 to output the oscillation sound for the test, the second process of setting the viewing distance, and the oscillation sound are output. The third process of determining whether the volume control key is determined, and if the volume variable key is not inputted, the test is terminated, and if the volume variable key is inputted, the process is repeated by varying the volume by one step and repeating the third process. Is done.

FIG. 5 is a flowchart illustrating a process of the automatic volume adjusting method of the present invention by the listening power test, and the process of the automatic volume adjusting method will be described with reference to FIG.

If the automatic volume control is set, the first process of determining whether to set the distance, the second process of determining the distance if the first process is determined, and the second process of setting distance if the distance is required, A third process of detecting the level of the audio signal, a fourth process of comparing the level detected in the third process with a sound level obtained by the grade and distance setting obtained by the listening test, and a fourth process comparing the sound If the level is not the same, it is made up of the fifth step of adjusting the volume and repeating the third step.

The automatic volume control device and method according to the present invention made in the hearing test according to the present invention after the hearing test as necessary to determine the hearing grade of the viewer through this by the viewer's listening power rating and set the viewing distance As shown in the figure, the listening level is set to the 'Y' axis and the viewing distance is set to the 'X' axis, and the sound level corresponding to the viewer's listening level and the set viewing distance is recognized as an appropriate level. When the automatic volume adjustment is performed in comparison with the level of the sound, the TV signal received through the antenna 1 is converted into the intermediate frequency in the tuner unit 2 and the intermediate frequency in the tuner unit 2. The converted TV signal is separated into an image signal and an audio signal by the intermediate frequency processor 3, and the separated output audio signal is detected by the detector 4. The voice amplifier 7 is applied to the voice amplifier 7, and under the control of the loudness 6, the voice amplifier 7 amplifies the voice signal applied from the detector 24 to be heard by the viewer through the speaker 8. The voice is output to the outside.

In this case, when the viewer sets the listening power test through the remote controller 5, the microcomputer 6 outputs a control signal to the switch unit 9 and the oscillator 10, and the switch unit 9 moves to the oscillator 10. Switching is switched.

The oscillator 10 outputs an oscillation frequency of about 1 kHz, and the oscillation frequency output from the oscillator 10 is output to the voice amplifier 7 through the switch 9 and the voice amplifier 7 Is amplified in and outputs the oscillation sound through the speaker (8).

The viewer sets the viewing distance while watching the OSD of the TV screen, and then increases the volume step by step until the oscillation sound is heard while listening to the oscillation sound output to the speaker 8.

When the oscillation sound is heard during the above process, the viewer stops changing the volume, and when the viewer stops changing the volume, the microcomputer 6 recognizes the end of the test and determines the viewer's listening level. .

Subsequently, when the viewer sets the automatic volume adjustment, and the viewer needs to adjust the volume according to various other conditions such as changing the channel while watching TV, the level comparison unit 12 detects the level detection unit 11. The level of the audio signal output from the voice amplifier 7 is compared with the level of the listening power described above (shown in FIG. 4) and the sound level corresponding to the distance set by the viewer.

That is, the level comparison unit 12 determines the level of the audio signal detected by the level detection unit 11 and the sound corresponding to the viewer's listening power rating stored in the microcomputer 6 and the distance set by the viewer. When the levels are compared, the microcomputer 6 automatically adjusts the volume until the levels are the same unless the levels are the same.

In this case, if the viewer does not set the distance, the viewer determines the viewing distance set at the time of the hearing test.

On the other hand, as another embodiment of the automatic volume control device and method according to the present invention, by configuring a sensor that can detect the distance to the viewer on the outside of the TV, it may eliminate the inconvenience that the viewer must set the distance have.

As described above, the sound level and the sound level determined at the viewing distance are determined based on the audience's hearing level determined after the test of the sound level and the hearing ability, which are outputted based on the optimum sound volume changed by the internal and external conditions of the TV. By adjusting the volume automatically by comparison, it will reduce the inconvenience of the viewer, it is effective for the viewer to watch the TV in the optimal conditions.

Claims (4)

A tuner unit for converting a TV signal received from an antenna into an intermediate frequency, an intermediate frequency processor for amplifying the TV signal converted to an intermediate frequency, separating the video signal and an audio signal, and an audio signal output from the intermediate frequency processor A detection unit for detecting, a remote controller for inputting data to adjust the voice by the viewer, a microcomputer that automatically adjusts the volume after determining the listening ability test and hearing level by controlling each unit by receiving the input data through the remote controller, A voice amplifier for amplifying and outputting the amplified output by adjusting the volume and tone of the voice signal output from the detector under the control of the microcomputer, and a speaker for externally outputting the voice signal amplified and output from the multiplier amplifier. Switching unit for switching the listening power test under the control of the microcomputer, Achievement test An oscillator for outputting an oscillation frequency for the test, a level detector for detecting the level of the audio signal output from the voice amplifier, a level detected by the level detector, and a reference level of a hearing grade by a listening test determined by the microcomputer Automatic volume control device by a hearing test, characterized in that consisting of a level comparison unit for comparing. When the listening power test is set, a first process of switching to output an oscillation sound for a test, a second process of setting a viewing distance, and a third process of determining whether a volume variable key is input by outputting an oscillation sound And a fourth process of repeating the third process by varying the volume by one step if the volume variable key is not input. Automatic volume adjustment method by the listening power test, characterized in that it comprises a. If the automatic volume adjustment is set, the first process of determining whether to set the distance, the second process of determining the distance if the first process is determined, and the second process of setting the distance if the distance is necessary, A third process of detecting the level of the audio signal, a fourth process of comparing the level detected in the third process with a sound level obtained by the grade and distance setting obtained by the listening test, and a fourth process comparing the sound If the level is not equal to the automatic volume adjustment method according to the listening power test, characterized in that the fifth step of adjusting the volume and repeating the third process. The method of claim 3, wherein if the distance is not set as the result of the first process determination in the third process, the distance is set to the viewing distance input during the listening power test.