KR100268477B1 - Microphone output mode switching apparatus and its method - Google Patents

Abstract

PURPOSE: An apparatus for switching a microphone output mode is provided to allow a user to exactly hear two audio signals by controlling gains of the audio signals inputted via a small microphone and a large microphone that are simultaneously used in a video conference, etc. CONSTITUTION: An apparatus for switching a microphone output mode includes a controller(50) for outputting a control signal to control an audio signal gain depending on a key signal for selecting a microphone output mode inputted by a user. The first gain controller(30) controls gains of the audio signals inputted from a small microphone(10) depending on the control signal for controlling gains of the controller(50). The second gain controller(40) controls gains of the audio signals inputted from a large microphone(20) depending on the control signal for controlling gains of the controller(50). A mixer(60) mixes the audio signals the gains of which are controlled from the first and second gain controllers(30,40). An amplifier(70) amplifies the level of the audio signals inputted from the mixer(60) into a given level.

Description

Microphone output mode switching device and switching method

The present invention relates to a microphone output mode switching device and a switching method, and more particularly, by adjusting the gain of a voice signal input through a small microphone and a large microphone used together in a video conference, a user can hear two voice signals accurately. The present invention relates to a microphone output mode switching device and a switching method for allowing a user to save a file in a PC format.

1 is a schematic block diagram illustrating a configuration of a microphone output mode switching device according to the prior art.

As illustrated, the first amplifier 3 amplifies the voice signal input from the small microphone 1 by a predetermined level, and inputs from the large microphone 2 or the first amplifier 3 according to a user's selection. The switch SW is switched to selectively output the voice signal, and the second amplifier 4 amplifies the voice signal output through the switch SW by a predetermined level and outputs the voice signal to a PC or a speaker.

In the microphone output mode switching device having the above-described configuration, in a system in which a small microphone and a large microphone are used together, such as a video conference, the user switches the switch SW so that the small microphone 1 or the large microphone 2 is the second. The audio signal output from the small microphone 1 or the large microphone 2 is output to the second amplifier 4 to be amplified by a predetermined level so as to be connected to the amplifying unit 4, and is output to a PC and stored in a file form. To be heard or output to speakers for the user to

However, in the prior art, when the user wants to hear the voice signal output through the small microphone and the voice signal output through the large microphone at the same time, the user cannot hear the video microphone. This severe, and can not be recorded on the PC, there is a problem that the user can not use the PC to store the voice signal output from the two microphones in the form of a file at the same time.

Accordingly, an object of the present invention is to adjust the gain of the voice signal input through the small microphone and the large microphone used in video conferencing, etc. to solve the above-described problems, so that the user can accurately hear the two voice signals or to the PC The present invention provides a microphone output mode switching device and a switching method for storing in a file form.

1 is a schematic block diagram for explaining the configuration of a microphone output mode switching device according to the prior art;

Figure 2 is a schematic block diagram for explaining the configuration of the microphone output mode switching apparatus according to the present invention,

3 is an operation flowchart for explaining a microphone output mode switching method according to the present invention;

4 is a diagram illustrating an OSD screen displayed on a display device to enable a user to input data in order to execute the microphone output mode of the present invention.

* Explanation of Signs of Major Parts of Drawings *

10: small microphone 20: large microphone

30: first gain control unit 40: second gain control unit

50 control unit 60 mix unit

70: amplification unit

In order to achieve the above object, the present invention displays a screen using an OSD when a large microphone and a small microphone are used at the same time, and controls a microphone output mode switching data and a voice signal gain control signal that a user sets on the OSD screen. In the internal memory of the system, and use this data to execute the microphone output mode of the system, adjust the gain of the audio signal input from the large microphones and the small microphones, mix them by the mixing unit, and mix them by a predetermined level. After amplifying, it can be output to a speaker so that users can listen to it, or to a PC so that it can be stored in a file format on a PC. At this time, the data stored in the internal memory is reused when executing the next microphone output mode.

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

Figure 2 is a schematic block diagram for explaining the configuration of the microphone output mode switching apparatus according to the present invention.

As shown, the control unit 50 for outputting a control signal for adjusting the audio signal gain according to the key signal for selecting the microphone output mode input by the user, and the control signal for controlling the gain of the control unit 50 Accordingly, the first gain control unit 30 adjusts the gain of the voice signal input from the small microphone 10, and the voice signal input from the large microphone 20 according to the control signal for gain control of the control unit 50. A second gain control unit 40 for adjusting gain, a mixing unit 60 for mixing a voice signal whose gains are input from the first and second gain control units 30 and 40, and a mixing unit ( And an amplifier 70 for amplifying and outputting the level of the audio signal input from the predetermined level.

The operation of the microphone output mode switching device according to the present invention configured as described above will be described in more detail with reference to the accompanying drawings.

3 is a flowchart illustrating a method of switching a microphone output mode according to the present invention.

As shown in the drawing, it is determined whether or not to use the previously stored microphone output mode switching data for the key signal input by the user (S100), and as a result of using the previously stored microphone output mode switching data internal memory Reading the data stored in the microphone output mode is executed (S110).

In addition, as a result of the determination in step S100, when not using the previously stored microphone output mode switching data, the current microphone input state is detected (S120) and displayed on the OSD screen (S130), and the microphone is selected by the user. It is determined whether there is a signal for (S140).

As a result of the determination in step S140, when a signal for microphone selection exists, the microphone output mode is set according to the input signal (S150), and input from the microphones 10 and 20 according to the input gain control signal. The gain of the voice signal is adjusted by the first and second gain adjusting units 30 and 40 (S160).

After performing step S160, it is determined whether a signal for storing is input (S170). When a signal for storing a result of the determination is input, the user stores the signal input by the user, and according to the stored signal, outputs a microphone output mode. Execution (S180).

At this time, when the determination result of the step (S140) does not exist the microphone selection signal and the signal for gain adjustment by the user, or as a result of the determination of the step (S170), when the signal for storage is not input to the data stored in the internal memory In step S110, the microphone output mode is executed by reading.

4 is a diagram illustrating an OSD screen displayed on a display device to enable a user to input data in order to execute the microphone output mode of the present invention.

Therefore, as described above, when the large microphone and the small microphone are used together, the present invention enables the audio signal output from the two microphones to be accurately output and also provides the effect of removing the howling phenomenon.

Claims (2)

A controller for outputting a control signal for adjusting a voice signal gain according to a key signal for selecting a microphone output mode input by a user; A first gain adjusting unit adjusting a gain of an audio signal input from the small microphone according to a control signal for adjusting the gain of the controller; A second gain adjuster adjusting a gain of an audio signal input from the large microphone according to a control signal for adjusting the gain of the controller; A mixing unit for mixing a voice signal whose gain is input from the first and second gain adjusting units; And And amplifying unit configured to amplify and output a level of the voice signal input from the mixing unit to a predetermined level. A first step of determining whether to use previously stored microphone output mode switching data for a key signal input by a user; A second step of reading the data stored in the internal memory and executing the microphone output mode when using the previously stored microphone output mode switching data as a result of the determination of the first step; A third step of detecting a current microphone input state and displaying it on an OSD screen when not using previously stored microphone output mode switching data as a result of the determination of the first step; A fourth step of determining whether a signal for microphone selection is present by the user after performing the third step; A fifth step of setting the microphone output mode according to the input signal and adjusting the gain of the audio signal input from the microphone according to the input gain control signal when there is a signal for microphone selection as a result of the fourth step. step; A sixth step of determining whether a signal for storage is input after performing the fifth step; And And a seventh step of storing a signal input by a user and executing a microphone output mode according to the stored signal when a signal for storage is input as a result of the determination of the sixth step.