JPH0636534A - Sound signal reproducing device - Google Patents

Abstract

PURPOSE:To distinctly make discrimination in plural display window parts corresponding to plural chapter selecting keys on the device by providing these display window parts with light emitting diodes, displaying a sound signal in utilizing the window parts and making light emitting color different between that for displaying the chapter number and that for displaying the level. CONSTITUTION:A system control circuit consisting of a microcomputer is connected with chapter selecting keys K01-K20 for selecting one of, for instance, 20 chapters of a disk Dc, and is also connected with cathodes of the same number of light emitting diodes D01-D20 for displaying the chapter numbers. Now, the diodes D01-D20 are positioned on the back side of their corresponding keys K01-K20, and are disposed opposite to the display window parts W01-W20. Thus, under control by a computer 30, a pickup 11 is moved in the radial direction of the disk Dc, and, for example, when the i-th chapter music is reproduced, the diode Di opposite to the window part Wi corresponding to the key Ki is emitted in yellow to display the meaning of the i-th under reproduction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal reproducing apparatus suitable as, for example, a so-called karaoke apparatus.

[0002]

2. Description of the Related Art Conventionally, a so-called karaoke device, which is a device for reproducing music for accompaniment of singing, has been widely used. As a recording medium for a karaoke device, an optical video disc or a digital audio disc has recently been favored. For example, in the case of a device using a video disc, when a singer selects a desired song, a selected song is selected. The accompaniment music is reproduced from the speaker, and the lyrics of the music are sequentially displayed on the screen of the receiver. Then, the singing voice picked up by the microphone is superimposed on the accompaniment music and reproduced from the speaker.

[0003]

By the way, in some audio signal reproducing apparatuses such as so-called system components,
A plurality of light emitting elements (LEDs, etc.) arranged in a straight line are driven based on the audio signal, and the number of light emitting sections is changed according to the change of the audio signal level to change the length of the bright line. In this way, there is a device in which the voice level is displayed so that the glitz at the time of use can be produced.

However, the player of the karaoke apparatus is provided with various operation sections and a display section over the entire area of the front panel having a small area. Even if you try to obtain such an effect,
There was a problem that there was no room left. An object of the present invention is to provide an audio signal reproducing device capable of displaying the level of a reproduced audio signal on a front panel having a small area.

[0005]

In order to solve the above-mentioned problems, the audio signal reproducing apparatus according to the present invention selects a recording area for each lump of audio signals on a medium by making reference numerals of the embodiments described later correspond to each other. And can be played back,
In the audio signal reproducing device, the plurality of light emitting units according to the number of selectable recording areas on the medium are provided, and the selection state is displayed by the light emitting units corresponding to the selected recording areas. Are arranged in a straight line, and a light emission control means for emitting a number of light emission units according to the level of the reproduced audio signal to display the level is provided.

[0006]

In the structure of the present invention described above, the light emitting portions for the selective display of the recording area, that is, the chapters are linearly arranged. The reproduced audio signal level is displayed using a plurality of light emitting portions for selective display of the recording areas arranged in a straight line. For example, among the light emitting units arranged linearly continuously, by making the number of light emitting units corresponding to the audio signal level emit from the end,
The level of the reproduced audio signal is displayed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an audio signal reproducing device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a front panel of a so-called multi-disc player having a karaoke function as an embodiment of the present invention.

This multi-disc player can reproduce optical video discs and digital audio discs. A plurality of recording areas called chapters (or tracks) are set on these discs. For example, in the case of a karaoke disc, one song accompaniment music and the lyrics of the song are displayed for each chapter. The atmosphere image and the image are recorded.

On the front panel of the multi-disc player, as shown in FIG. 1A, a plurality of chapter selection keys K01, K02, K03, ... The K20 is linearly arranged above the disc tray Ty, for example. Each of the plurality of chapter selection keys Ki (i = 0 to 20) is
As shown in the enlarged view of FIG. 1B, the pressing operation section Pi has a chapter number printed, for example, and the light emitting display window section Wi having a light emitting diode arranged on the back surface side. Figure 1
B is an enlarged view of the key K01.

In the case of this example, each key K01,
K02, K03, ..., Display window portions W01, W02, W03 of K20,
,, on the back side of W20, as shown in FIG. 2, two light emitting diodes having different emission colors are arranged respectively, and one of the two light emitting diodes D01, D02,
, D20 are used for displaying chapter numbers which emit yellow (Y) light, for example. The other of the two light emitting diodes, the other light emitting diode D21, D22, ..., D40, is for displaying the audio signal level.

When the pressing operation portion Pi of any key Ki of the plurality of chapter selection keys is pressed, the multi-disc player causes the chapter number "i" corresponding to that key of the loaded disc. Play the song. Then, the yellow light emitting diode provided on the back side of the display window portion Wi of the pressed key Ki emits light, the display window portion Wi is illuminated in yellow, and the song of the chapter number “i” is selected. Is displayed, and it is displayed that it is being played back.

On the front panel of the multi-disc player of this example, as shown in FIG. 1A, level display marks are printed, for example, above the plurality of chapter selection keys K01 to K20. In the case of this example, it is possible to display the level over when displaying the audio signal level. In the example of FIG. 1A, stereo level display is performed, and ML
Is a left channel level display mark, MLOV is a left channel level over display mark, MR is a right channel level display mark, and MROV is a right channel level over display mark.

In order to easily notify the above-mentioned level-over display, the light-emitting diode D21 for displaying the audio signal level is displayed.
D40 to D40 use different emission colors for the in-reference level display and the level over display. That is, in the example of FIG. 2, the display marks ML, MLO
According to V, MR, and MROV, the keys K01 to K03 are used for the level over display of the left channel, and the keys K18 to K20 are used for the level over display of the right channel. These are LEDs that emit red (R) light. To be done. Also,
Keys K04 to K10 are for displaying the level within the reference of the left channel,
The keys K11 to K17 are used for displaying the level within the reference of the right channel, and these are light emitting diodes that emit green (G) light.

In this case, depending on the audio signal level of the left channel, the keys K10 to K01 on the left side of the key K10.
The number of light emission of the level display light emitting diodes D30 to D21 changes. That is, when the level is very small, for example, only the light emitting diode D30 emits light, and as the level increases, the number of adjacent light emitting diodes D29, D28, ... Keys K03, K02, K depending on the overlevel
01 sequentially emits red light. Similarly, for the right channel, when the number of the level display light emitting diodes D31 to D37 corresponding to the right channel audio signal level emits green light in the right direction of the front panel of FIG.
The light emitting diodes D38 to D40 sequentially emit light according to the level.

Next, one embodiment of the circuit configuration of the multi-disc player of this example will be described with reference to FIG.

In FIG. 3, reference numeral 10 generally shows the multi-disc player of this example, the video signal processing system is omitted, and only the audio signal processing system is shown. When the disc Dc is mounted on the multi-disc player 10, the output of the optical pickup 11 facing the mounted disc Dc is supplied to the reproduction signal processing circuit 12.
The music signal Sm is reproduced in stereo. The left and right channel music signals from the reproduction signal processing circuit 12 are supplied to the amplifiers 15L and R through the volume control circuit 13 and the adding circuits 14L and 14.

On the other hand, the singing signal Sv from the microphone 2
Is supplied to the adder circuits 14L and R through the preamplifier 21 and the volume control circuit 22, superposed on the left and right channel music signals, and supplied to the speakers 1L and 1R via the amplifiers 15L and 15R. . The microphone 2
May be cordless, for example, by infrared transmission.

A system control circuit (microcomputer) 30 includes, for example, 20 disks of the disk Dc.
Chapter selection key K to select any of the chapters
01 to K20 are connected, and the cathodes of the same number of chapter number display light emitting diodes D01 to D20 are connected.
The anodes of the diodes D01 to D20 are connected to the power supply Vcc via a current limiting resistor (not shown). Each light emitting diode D01 to D20 has a corresponding chapter selection key K01.
Display windows W01 to W20 indicated by chain lines in the figure on the back side of K20
Is arranged so as to face.

As described above, when any chapter selection key Ki is operated, the pickup 11 is controlled by the microcomputer 30 to move in the radial direction of the disc Dc, and the song of the i-th chapter is changed. The cathode of the light emitting diode Di, which is reproduced and faces the display window portion Wi corresponding to the operated key Ki, becomes “L”, the light emitting diode Di emits yellow light, and the song of the i-th chapter is changed. It is selected and it is displayed that it is playing.

In the continuous reproduction mode, i, j, k ...
The songs of the..th chapters are sequentially played back, and as the playback chapters progress, the corresponding diodes Di, D
j, Dk, ... sequentially emit yellow light.

Next, in this embodiment, based on the light emitting diode groups D21 to D30 and D31 to D40 for displaying the levels of the left and right channel audio signals SL and SR, and the audio signals SL and SR, each diode group D21 is obtained. Light emitting control circuits 41 and 42 for driving D30 to D31 to D31 to D40 are provided. The anodes of the diodes D21 to D40 are connected to the power supply Vcc via a current limiting resistor (not shown).

Light emitting diodes D21 to D40 for level display
Also, like the light emitting diodes D01 to D20 for displaying the chapter number, they are arranged to face the display window portions W01 to W20 corresponding to the chapter selection keys K01 to K20.

Further, in this embodiment, a mode changeover switch 43 is provided, and when watching a movie or the like, the switch 43 is connected to the N side, contrary to the illustration.
The player 10 is in the normal reproduction mode, and the preamplifier 21
And both control circuits 41 and 42 are in a non-operating state. In the normal reproduction mode, even if the audio signals SL and SR are present, the level display light emitting diodes D21 to D40 are not turned on at all, and as described above, the chapter number display light emitting diodes D01 to D20 are reproduced. As the chapter progresses, the lights are turned on one after the other, and there is no obstacle to watching movies.

Further, as shown in the figure, when the switch 43 is switched to the K side, the player 10 enters the karaoke mode and is controlled by the microcomputer 30 so that the preamplifier 21 and the light emission control circuits 41 and 42 are in the operating state. Becomes Light emitting diodes for level display D21 to D30, D31 to
D40 is driven by the light emission control circuits 41 and 42, and as described above, only the number corresponding to the levels of the audio signals SL and SR of the left and right channels is the light emitting diode D in the central portion.
It is turned on starting from 30, D31.

Thus, in the karaoke mode, when the levels of the audio signals SL and SR are within the reference, the length of the green bright line extending from the central portion of the key row to the left and right is displayed, and when exceeding the reference, the key row is displayed. A red bright line is displayed at both ends of the, so that the volume can be easily adjusted, and the length of the bright line can be changed according to the instantaneous level of the audio signal to produce a gorgeous use.

Further, since the display of the audio signal level is performed through the display window portions W01 to W20 of the chapter selection keys K01 to K20 as in the case of the chapter number display, the small area front panel of the conventional device can be used as it is. You can

In the above-mentioned embodiment, in the karaoke mode, in the display window of the key of the selected chapter number, the light emitting diode for displaying the yellow chapter number and the light emitting diode for displaying the green or red light level are It may be turned on at the same time. When these two colors are lit simultaneously, the light emission color of the display window of the key of the selected chapter number is yellowish green or yellowish red, and it is clear which chapter number is selected. You may not be able to know. This problem can be solved by turning on only the chapter number displaying light emitting diode in the display window portion of the selected chapter number position.

FIG. 4 shows an embodiment in that case. In this example, the light emitting diodes D01 to D20 for displaying the chapter numbers are shown.
, And the anodes of the light emitting diodes D21 to D40 for signal level display are connected to the power source Vcc through the current limiting resistors, respectively, and face the display window of any one key. Each cathode of the chapter number display light-emitting diode Di (i = 0 to 20) and the anode of the level display diode D (i + 20) are directly connected. Other configurations are the same as those in FIG.

In the embodiment of FIG. 4, when any chapter selection key Ki is operated in the karaoke mode, the cathode potential of the corresponding chapter number displaying light emitting diode Di becomes "L", and this light emitting diode Di Is turned on, but the pair of level display light emitting diode D (i +
Since the anode potential of 20) also becomes "L", this level display light emitting diode D (i + 20) does not light.

As a result, in the embodiment of FIG. 4, the green bright line at the center of the key row and the red bright lines at both ends of the key row, which indicate the levels of the audio signals SL and SR, correspond to the yellow bright points of the chapter number display. The chapter number of the song being selected and being played is displayed clearly except for the part to be played.

In each of the above-mentioned embodiments, a plurality of light emitting diodes of different colors are used for the display of the selected chapter number and the signal level. However, even a single element emits light of two colors depending on the driving condition. Possible two-color light emitting diodes may be used.

[0033]

As described above, according to the present invention, in the audio signal reproducing device in which the light emitting diodes are arranged so as to face the plurality of display window portions corresponding to the plurality of chapter selection keys, respectively, Since the display window parts are arranged in a straight line and the audio signal level is displayed using the plurality of display window parts, it is possible to display the level of the reproduced audio signal on the front panel having a small area. An audio signal reproducing device capable of performing the above is obtained.

Further, since the light emission color of the light emitting diode is made different for displaying the chapter number and for displaying the level, the user can clearly distinguish between the two displays.

[Brief description of drawings]

FIG. 1 is a diagram showing a front panel of an audio signal reproducing device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a part of the example of FIG. 1 in more detail.

FIG. 3 is a block diagram showing the configuration of an embodiment of an audio signal reproducing device according to the present invention.

FIG. 4 is a block diagram showing a configuration of a main part of another embodiment of the present invention.

[Explanation of symbols]

10 multi-disc player 11 optical pickup 30 system control circuit (microprocessor) 41, 42 light emission control circuit 43 mode selection switch D01 to D40 light emitting diode K01 to K20 chapter selection key W01 to W20 display window section

Claims (4)

[Claims] 1. A recording area for each block of audio signals on a medium can be selected and reproduced, and a plurality of light emitting units are provided according to the number of selectable recording areas on the medium. In the audio signal reproducing device for displaying the selected state by the light emitting unit corresponding to the selected recording area, the plurality of light emitting units are linearly arranged, and An audio signal reproducing device provided with a light emission control means for displaying a level by causing a number of light emitting units to emit light according to the level of a reproduced audio signal. 2. A recording area can be selected and reproduced for each block of audio signals on a medium, and a plurality of light emitting units corresponding to the number of selectable recording areas on the medium are provided. In the audio signal reproducing device for displaying the selection state by the light emitting units corresponding to the selected recording area, the plurality of light emitting units are linearly arranged and each light emitting unit has two colors. The light emitting device is formed to include a light emitting device, and a light emission control device is provided for displaying a level by emitting light from a number of light emitting devices of the plurality of light emitting devices according to the level of the reproduced audio signal. An audio signal reproducing device in which the emission color of the light emitting section corresponding to the recording area and the emission color of the light emitting section for displaying the level of the reproduced audio signal are made different. 3. The audio signal reproduction according to claim 1 or 2, wherein the plurality of light emitting units are divided into a plurality of groups and are turned on in different colors according to the level of the audio signal. apparatus. 4. The audio signal reproducing apparatus according to claim 1, wherein the plurality of light emitting units perform level display of the audio signal only in a specific audio reproducing mode.