JP2004191693A - Multi-phone system for karaoke capable of line input to portable sound recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-phone system for karaoke with high added value that has superior noise prevention performance and is capable of line input to a portable sound recorder such as an MD player. <P>SOLUTION: The multi-phone system for karaoke that is capable of line input to the portable sound recorder is constituted of (1) a master power unit 1 having a function of inputting and outputting the output signal of a sound output source of a karaoke machine 10 and a power supply function, (2) a bus line 2 which is connected to the master power unit 1, (3) head amplifiers 3 which are connected to the bus line 2 in parallel as many as a desired number and output the output signal to headphones 4 and a sound-recording terminal 3b for line input to the portable sound recorder, and (4) headphones 4 and the portable sound recorder 5 which are connected to the desired number of head amplifiers 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a karaoke apparatus.
More specifically, the present invention relates to a karaoke device of high added value which can prevent noise of a karaoke device, monitor effects of a user, and furthermore, can record high-quality sound and contribute to improvement of a user's singing ability. It is.
[0002]
[Prior art]
In recent years, karaoke apparatuses that have become increasingly popular have become a major social problem due to an increase in noise complaints. On the other hand, karaoke enthusiasts have a demand for insufficient sound effects, for example, to make use of the stereo effect of accompaniment music to create a sense of reality.
[0003]
There is also a demand for improving singing ability through a karaoke device, but the accompaniment sound from the karaoke device is output as sound in a place where the karaoke device is set or by an indoor speaker (this is a cause of noise. Needless to say, it is not possible to monitor accompaniment sounds near the ears, so there is a limit to studio-like effects and improvement in singing ability.
[0004]
Furthermore, if karaoke enthusiasts record their singing voices and attempt to improve their singing skills based on this, existing MD players and cassette players (cassette tape players, tape recorders) will have accessory parts. However, in this case, since unnecessary noises (speech, applause, etc.) are recorded as a whole, there is a problem that high-quality sound recording is impossible.
[0005]
[Problems to be solved by the invention]
There are no karaoke apparatuses currently on the market or proposed which sufficiently meet the above-mentioned needs, and meeting these needs is significant from a social point of view such as noise prevention.
In recent years, the possession rate of portable recorders such as MD players and cassette players is high, and this is the same for karaoke enthusiasts (users). Karaoke enthusiasts are trying to improve their singing skills and the like. When recording their own voice in a karaoke hall with these devices, the solution is awaited in order to face the above-mentioned drawbacks.
[0006]
The present inventor has made intensive studies to solve the above-mentioned drawbacks of the conventional karaoke apparatus.
As a result, when the present inventor uses the karaoke apparatus, the user utters (sounds) via headphones, and outputs the utterance signal and the accompaniment music signal directly to the karaoke hall, and also controls the central control. When output is performed through a plurality of terminal headphones connected in parallel via a main bus line connected to the device, for example, when a user and other customers use only the terminal headphones, the noise prevention effect and the sound quality ( Stereo) effect and monitor effect, and when the input signal to the terminal headphone is line-input to a portable recorder such as an MD player, it is possible to record high-quality sound simultaneously with noise reduction. We found that a karaoke system with such characteristics can be obtained.
[0007]
The present invention has been completed based on the above knowledge, and the present invention provides a karaoke multiphone system capable of line input to a high-value-added portable recorder.
[0008]
In general, the present invention provides a karaoke multi-phone system capable of line input to a portable recorder.
1). A master power supply device (1) having a function of inputting / outputting an output signal from an audio output source of the karaoke device (10) and a power supply function;
2). A bus line (2) connected to the master power supply (1);
3). A desired number of terminals are connected in parallel to the bus line (2) and have a headphone terminal (3a) for outputting the output signal to a headphone (4) and a recording terminal (3b) for line input to a portable recorder. Head amplifier (3),
4). A headphone (4) and a portable recorder (5) connected to each of the desired number of head amplifiers (3);
The present invention relates to a karaoke multi-phone system capable of line input to a portable recorder.
[0009]
Hereinafter, technical configurations and embodiments of the present invention will be described in detail with reference to the drawings.
It is needless to say that the present invention is not limited to the illustrated one.
[0010]
FIG. 1 is a block diagram of a karaoke multi-phone system capable of inputting a line to a portable recorder according to the present invention.
The internal structure of the karaoke apparatus (10) is of a known structure, for example, a music selection and screen (CRT) display function, a user's voice input by a microphone, an accompaniment sound and a user's voice output by an amplifier and a speaker, It has a known structure having functions such as the following. The microphone may be provided in a head amplifier (3) described later.
[0011]
The master power supply device (1) is for inputting the power supply of the whole system and the karaoke output device (L / R) from the karaoke device (10) main body and outputting it to a bus line (2) described later.
In the present invention, the master power supply device (1) may be incorporated in the karaoke device (10) body.
[0012]
The output signal from the karaoke device (10) is an output signal relating to the accompaniment sound and the voice of the singer, and is input to the master power supply device (1).
A function of transmitting the received signal to a desired number of head amplifiers (3, 31,... 3n) connected in parallel to the master power supply via the main bus line (2); As shown, it has a function of supplying power for driving a head amplifier (3, 31,... 3n) by converting an alternating current into a direct current by a TR (transformer), a three-terminal regulator IC, or the like. . Note that the master power supply device (1) may have a buffer effect by impedance conversion of input / output signals.
[0013]
A head amplifier (HA) (3) connected by a desired number in parallel with the bus line (2) includes:
1). A connection for receiving an input signal from the bus line (2);
2). A function of adjusting the volume of an input signal from the bus line (2) using a variable resistor (VR), for example, 20K (VR);
3). An amplifier for activating the head amplifier (HA),
4). A headphone terminal (3a) for outputting an audio signal to a headphone (4) described later,
5). A recording terminal (3b) for outputting an audio signal to a portable recorder such as an MD player described below,
It is composed of
[0014]
In the head amplifier (HA) (3), the connection to the bus line (2) can be made by, for example, a 5 PINDIN code, specifically, an L channel / + 15V Vcc / R channel / R channel / GND (earth) / L channel. Just fine.
Further, in the head amplifier (HA) (3), the amplifier includes, for example, a power IC (for example, a Morisic IC, LA4170 manufactured by Sanyo Corporation), and each of the head amplifiers (3, 31, 32,...). 3n) is configured to have characteristics of, for example, a power supply voltage of 15 V, a frequency characteristic of 50 to 100 KHz (-3 dB), a distortion factor of 0.5%, an input resistance of 30 KΩ, an input voltage of 300 mV, and a channel separation (stereo characteristic) of -70 dB. do it.
[0015]
In the present invention, a headphone (4) is connected via a headphone terminal (3a) to correspond to a desired number of head amplifiers (HA) (3, 31,..., 3n) connected in parallel to the bus line (2). , 41... 4n) are connected.
A commercially available headphone (4) may be used. Needless to say, in order to obtain a stereo effect, headphones having excellent stereo characteristics may be used.
As shown in FIG. 1, two or more headphones (4) may be connected to one head amplifier (3).
[0016]
In the present invention, an MD player or the like is connected via a recording terminal (3b) to a head amplifier (HA) (3, 31,..., 3n) connected in a desired number in parallel to the bus line (2). Portable recorder (5) is connected.
The connection between each head amplifier (HA) (3) and the portable recorder (5)
1). In the case of an MD player, a recording terminal (3b) of the headphone (3) and a line input terminal of the MD player are connected by a desired lead wire.
2). In the case of a cassette player, a recording terminal (3b) on the headphone (3) side and a microphone input terminal on the cassette player side are connected by a desired lead wire.
It can be done by doing.
In order to cut noises in a karaoke hall and to record high-quality sound, the above-mentioned connection mode is important. In the case of recording from an external microphone dedicated to voice input provided in an MD player or the like, the initial purpose is set. Cannot be achieved.
As shown in FIG. 1, two or more portable recorders may be connected to one head amplifier (3).
[0017]
【The invention's effect】
The karaoke multi-phone system of the present invention that allows line input of the portable recorder has the following excellent operational effects.
(1) In the present invention, a karaoke user can use a headphone to sing with a microphone while listening to accompaniment sound of sufficient sound quality and sound generated by the user with sufficient stereo effect. At this time, the karaoke apparatus may be used so that the accompaniment sound or the voice input from the singer's microphone can be played in a room or room where the karaoke apparatus is installed if the noise regulation is not satisfied. The output may be completely squeezed so as not to flow into the hall or room, and all karaoke users may enjoy karaoke with headphones. In this case, a remarkable effect can be obtained in noise prevention. In addition, when the karaoke accompaniment sound and the user's utterance sound can be heard within the noise regulation, the use of headphones is not particularly required, but the accompaniment sound with sufficient sound quality due to the stereo effect by the headphones cannot be enjoyed.
[0018]
(2) In the present invention, a method is used in which an input signal from an audio output source such as a karaoke device is input to one master power supply device, and signals are transmitted to a plurality of terminal headphones in a parent-child manner via a main bus line. Therefore, a desired number of headphones can be connected to one line. Therefore, a karaoke company can provide not only a noise prevention effect but also a high value-added service by simply adding the system of the present invention without any modification of the existing karaoke apparatus main body.
[0019]
(3) In the present invention, when using the karaoke apparatus, the singer can sing while listening to the accompaniment music through the headphones, so that the singing performance can be as good as a studio and the singing ability can be improved. That is, in a normal karaoke apparatus usage mode, a user sings while monitoring a sound source using a speaker, but since the sound reverberates through a wide space, it is not very useful for himself. In this respect, in the present invention, since the speaker output is directly monitored via the headphones, the above-described effects can be obtained, and there is an effect that a large number of people can use the outputs at the same time.
[0020]
(4) In the present invention, a great advantage is provided when a karaoke user (enthusiast) performs recording using a portable recorder such as a commercially available MD player for improving singing ability and the like.
Karaoke users (enthusiasts) record their own singing voices in a karaoke shop using a commercially available MD player or cassette player to improve their singing skills and practice. There is no choice but to record with a dedicated input microphone (external microphone). In this case, there is a major drawback that unnecessary noise (speech, applause, etc.) is entirely recorded.
On the other hand, the recording method of the karaoke multi-phone system of the present invention uses an audio output signal transmitted to a head amplifier connected in parallel to a main bus line through a recording terminal of each head amplifier. Recording with a line input to a portable recorder, which enables high-quality recording at the same time as noise reduction.
If a microphone having better directivity is used as a microphone for voice input, the recording characteristics are significantly improved, but even a commercially available microphone of a normal level can sufficiently achieve the initial purpose. .
[Brief description of the drawings]
FIG. 1 is a block diagram showing a karaoke multiphone system capable of inputting a line to a portable recorder of the present invention.
[Explanation of symbols]
10 Karaoke device 1 Master power supply device 2 Bus line 3 Head amplifier (HA)
3a ……… Headphone terminal 3b ……… Recording terminal 4 ……… Headphones 5 ……… Portable recorder

Claims (4)

A multi-phone system for karaoke that allows line input to a portable recorder,
1). A master power supply device (1) having a function of inputting / outputting an output signal from an audio output source of the karaoke device (10) and a power supply function;
2). A bus line (2) connected to the master power supply (1);
3). A desired number of terminals are connected in parallel to the bus line (2) and have a headphone terminal (3a) for outputting the output signal to a headphone (4) and a recording terminal (3b) for line input to a portable recorder. Head amplifier (3),
4). A headphone (4) and a portable recorder (5) connected to each of the desired number of head amplifiers (3);
And a karaoke multi-phone system capable of line input to a portable recorder. The karaoke multi-phone system according to claim 1, wherein the portable recorder (5) is an MD player or a cassette player. The karaoke multiphone system according to claim 1, wherein when the portable recorder (5) is an MD player, a line input terminal of the MD player and a recording terminal (3b) of the head amplifier (3) are connected. The karaoke multi-phone system according to claim 1, wherein when the portable recorder (5) is a cassette player, a microphone input terminal of the cassette player and a recording terminal (3b) of the head amplifier (3) are connected.

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