KR940001812Y1 - Test tone circuit - Google Patents

Abstract

No content.

Description

Test tone circuit

1 is a circuit diagram of the present invention.

2 is a control flowchart according to FIG.

The present invention relates to a TV system in which a digital audio processor or pro-logic is built in to create a spaciousness, and in particular, a test that can efficiently adjust the effect of a sound field (jEffect). It relates to a test tone circuit.

In general, when using the test tone mode (MODE) to properly adjust the effect of the sound field in the conventional set, the white noise is continuously generated regardless of the position of the portion to be adjusted. do. Therefore, you must wait until the position you want to adjust is returned before adjusting the level of noise at that position.

Therefore, in the related art, since an accurate sound level cannot be set using a general audio signal, there is a problem that an appropriate sound field effect cannot be obtained.

Accordingly, an object of the present invention is to provide a test tone circuit that can efficiently adjust the effect of a sound field by setting an accurate sound level in view of the above problems.

The present invention for achieving the above object is characterized in that when you want to adjust the volume of the noise of a specific position, only the noise of the position is continuously coming out, and if the adjustment is not made for a certain period of time, the noise is output again while rotating.

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

1 is a circuit diagram of the present invention, which consists of a tact switch and has various function keys for performing a test tone, and scans a key input of a key input unit 50 to control various signals necessary for performing the test tone. A control unit 100 for outputting the control unit, a driving unit 30 for driving the display output of the front unit 40 by inputting a level control signal of the control unit 100, and a plurality of switches incorporating the fisherman 100. According to the logic control signal of the control unit 100 by inputting the noise generator and signal switching unit 10 and the noise generator and the signal switching unit 10 for generating a predetermined level of noise in the test tone mode A level adjustment unit 20 for up / down adjustment of the signal level in accordance with the level adjustment signal of < RTI ID = 0.0 >), < / RTI >

2 is a control flow diagram different from that of FIG. 2, and steps (101) to (110) are performed to perform a test tone mode according to the present invention.

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

First, in FIG. 1, a general audio signal is input to the input terminals A and B and output to the output terminals C and D.

Here, the sound signal of the speaker outputting the front effect and the rear end signal of the output terminal D by viewing the signal of the output terminal C of the sound signal from the positional perspective of the sound field forming speaker SPEAEER. Speaking of the source SOURCE, the signal bell adjusting unit 20 is adjusted according to a listener who listens to the sound to adjust each effect level to the optimal volume level.

However, it is impossible to adjust the correct sound level because the change is severe with a normal voice signal. Therefore, as a supplement to this, a test tone function is provided to set an accurate sound level, and the present invention focuses on improving an effective control technology in this case.

In normal operation, the front and rear sound sources input from the input terminals A and B are passed through the noise generator and the signal switching unit 10 and input to the level adjusting unit 20, and are input from the input terminal M. The signal is passed through the variable resistor VR1 and the signal input from the output terminal M is passed through the variable resistor VR1 and output to the output terminal N, but the fourth switch SW4 of the key input section 50 When the key is touched to enter the test tone mode, the noise generator and the signal switch unit 10 open the voice signals of the input terminals A, B, and M that have been passed so far, and make their own noise. Since the signal is output through the output lines (O, P, Q), noise of a certain level is output from the output terminals (C, D, N), which is a good condition for adjusting the volume.

Here, the second switch SW2 is a key for adjusting the effect level. When the second switch SW2 is pressed, the second switch SW2 is switched to the effect control mode, and the current signal level position is displayed on the front part 10. Next, when the first switch SW1 is pressed, the level is up, and when the third switch SW3 is pressed, it is down.

This operation is the same in the test tone mode and thus controlled.

Therefore, when the test tone switch is pressed, the noise signals generated by the noise generator and the signal switch 10 are sequentially transferred to the output terminals C, D, and N by logic control signals generated at the output terminal e of the controller 100. It prints out with a certain time. This makes it easy for the user to know the current main, front and rear output levels.

In this case, when the key of the second switch SW2 is touched, the control unit 100 enters the front and rear adjustment mode. For example, it is preferable to press the front button once, and to set the rear adjustment mode once. .

Referring to the above-described operation according to the control flowchart of FIG. 2, step 101 is a step of determining whether the first and third switches SW1 and SW3 of the key input unit 50 have been touched.

If it is touched in step 101, step 102 is performed to determine whether an effect mode is an effect mode, and step 103 is an effect mode.

Step 103 is a step of outputting corresponding control data to the level adjusting unit 20 of FIG. 2 and setting a reset term.

In step 101, if it is not a touch (104), it is determined whether the fourth switch SW4 is a touch.

If it is touched in step 104, step 105 is performed to determine whether the second switch SW2 is touched.

If it is touched in step 105, step 106 is performed to determine whether an effect mode is applied to the front or the rear.

In step 106, the front side 107 is performed to generate a noise signal to the output terminal C and to set the reset team.

If it is rear in step 106, step 108 is performed to generate a noise signal to the output terminal D and set a reset team.

In step 105, if it is not the touch, step 109 is performed to determine whether a predetermined predetermined team has elapsed.

If a predetermined team has elapsed in step 109, a noise signal is generated to the output terminals C, D, and N, and the effect mode is reset.

Here, the effect mode refers to a mode for effectively forming a sound field.

In addition, the control unit 100 according to the embodiment described in the present invention is preferable to use a microcomputer, but when it is not available, it may be configured using a logic gate and latch means.

The resistors R1-R3, which are not described in FIG. 1, are input resistors and the variable resistor VR1 is a resistor for variably adjusting the level of the output line Q.

Here, the level adjusting unit 20 preferably uses an electronic interlocking volume controlled as a digital signal, and the amplifiers OP1 to OP3 use operational amplifiers.

As can be seen from the above operation description, when the key of the key input unit 50 is set in the front and rear adjustment modes, the output of the noise signal is stopped in order, and the noise signal fixed at the current mode position is stopped. It is generated continuously. After a certain time, that is, if there is no operation of the level adjustment, the team outputs a noise signal to the output terminals C, D, and N while returning with the original fixed time team.

To escape the test tone mode, press the fourth switch SW4 or press the function switch of the guitar set.

As described above, the present invention has an advantage that the effect of the sound field can be efficiently adjusted by setting the correct sound level, thereby providing an improved listening feeling to the user.

Claims (6)

A digital audio processor for forming a sound field, comprising: a key input unit 50 consisting of a tact switch and having various function keys necessary for performing a test tone, and scanning a key input of the key input unit 50 to perform the test tone. The control unit 100 for outputting various control signals, the drive unit 30 for driving the display output of the front unit 40 by inputting the level control signal of the control unit 100, and the control unit by embedding a plurality of switches The noise generator and the signal switching unit 10 and the outputs of the noise generator and the signal switching unit 10 for generating a predetermined level of noise in the test tone mode according to the logic control signal of 100 are inputted to the And a level adjusting unit (20) for adjusting the signal level up / down according to the level adjusting signal of the control unit (100). The test tone circuit according to claim 1, wherein the level adjusting unit (20) is composed of an electronic interlocking volume adjusted by a digital control signal. The test tone circuit according to claim 1, wherein the control unit (100) comprises a micom that outputs a control signal for performing a test tone by a predetermined logic. In a TV system having a built-in pro-logic to form a sound field, a key input unit 50 having various function keys necessary for performing a test tone by a tact switch and a key input of the key input unit 50 are scanned and the A control unit 100 for outputting various control signals required to perform a test tone, a drive unit 30 for driving the display output of the front unit 40 by inputting a level control signal of the control unit 100, and a plurality of switches A noise generator and signal switching unit 10 for generating a predetermined level of noise in a test tone mode according to a logic control signal of the controller 100, and the noise generator and signal switching unit 10 of And a level adjustment unit (20) for inputting an output to adjust the signal level up / down according to the level adjustment signal of the control unit (100). 5. The test tone amplifier according to claim 4, wherein the level adjuster (30) further comprises amplifiers (OP1-OP3) for amplifying the output of the level adjuster (20) to a predetermined level. 5. The test tone circuit according to claim 4, wherein the level adjuster (20) is constituted by an electronic interlocking volume adjusted by a digital control signal.