JPS60262188A - Performer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a performance device that reproduces a magnetic recording medium on which songs and accompaniment by professional singers are recorded, and allows a user to sing along with the songs and amplify them. It is something.

Conventional configurations and their problems As a field of audio equipment, accompaniment signals from musical instruments etc. recorded on magnetic recording media are played back and amplified, and when a user sings along with the accompaniment signals, the user's voice signal is added to the accompaniment signal. There is something commonly called a ``karaoke device'' that mixes and amplifies the sound, and is widely used for home or business use.

By singing using the above-mentioned "karaoke device," users can gain joy and satisfaction, but in recent years, an increasing number of people want to improve their own singing ability. Although some people receive instruction from a bad song teacher, there are also people who use an audio multiplex recording medium called ``audio multiplex tape'' as a way to study songs on their own.

This audio multiplexing type magnetic recording medium is, for example, a first track 11 on a magnetic tape 11 as shown in FIG.
1 is a professional singer's audio signal, and a second track 112 is an audio signal of a professional singer or the like.
The accompaniment signals of musical instruments, etc. are recorded respectively.

Note that since a magnetic sheet or a magnetic disk can be similarly configured with a plurality of tracks, the magnetic tape 11 will hereinafter be referred to as a magnetic recording medium 11.

When this magnetic recording medium 11 is used, an audio multiplexing type ``karaoke apparatus'' having a configuration as shown in FIG. 2 is used. The audio signal recorded on the first track 111 of the magnetic recording medium 11 is reproduced by the magnetic head 101 of the first reproduction means 1 and amplified by the amplifier 102. second track 1
12 accompaniment signals are transmitted to the magnetic head 201 of the second reproducing means 2.
The signal is reproduced by the amplifier 202 and amplified by the amplifier 202. The microphone 401 of the microphone amplification means 4 converts the user's voice into an electrical signal, and the amplifier 402 amplifies the signal.

The amplifying and amplifying means 9 mixes and amplifies the respective outputs of the first reproducing means 1 , the second reproducing means 2 and the microphone amplifying means 4 using an amplifier 901 and amplifies the sound from a speaker 902 .

It is said that by using the above device to play back and listen to the audio signals of professional singers recorded on a magnetic recording medium and actually practicing singing along with the audio signals, one can improve one's singing ability. However, no matter how much you practice, the user's singing style becomes a model and approaches the singing style of professional singers. In other words, the user himself or herself is unable to tell how much their own singing ability has improved. It had the disadvantage that it was impossible to judge, and it also had the disadvantage that even if you were singing in the wrong way, you wouldn't notice it, so you wouldn't be able to get a practice effect.

For example, there are many elements to evaluate singing ability, such as pitch, rhythm, and melody, but in addition to these, there are also other important elements in Japanese enka, such as fists, vibration, and intonation. Among these evaluation factors, the differences in pitch, rhythm, vibration, etc. can be easily understood by comparing a professional singer's song with a user's song, and can be improved through repeated practice.

On the other hand, intonation, fist movements, accents, etc., which are related to changes in the intensity of vocalizations, are very difficult to perform because they vary from singer to singer as they express emotions and emotions. Such evaluation factors have the drawback that even if the user practices with the above-mentioned ``karaoke device'', there is little practice effect, and on the contrary, the user gets into the habit of singing in his or her own way. In addition, the above-mentioned "karaoke machine" uses a magnetic recording medium, and due to the non-linear characteristics of the magnetic recording medium, when the singer's voice volume is high, the magnetic recording medium tends to become saturated, and the strength and weakness of the vocalization of the professional singer himself. It is often recorded that the rate of change is smaller than the change. Even if the user played and practiced using this as a model, the user would not be able to understand the changes in dynamics of the original song, and the user would naturally learn how to sing the song incorrectly.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and restores the rate of change of a professional singer's audio signal recorded on a magnetic recording medium to the original song (sung by a professional singer). It is an object of the present invention to provide a performance device that can contribute to the user's singing direction by comparing this with the user's song and displaying how much the changes in dynamics match.

Composition of the Invention The performance device of the present invention includes a first reproducing means for reproducing a singer's audio signal recorded on a first track of a magnetic recording medium, and a rate of change in the output of the first reproducing means based on the original music. An extension means that extends and enlarges the user's song to bring it closer to the user, a microphone amplification means that converts and amplifies the user's singing into an audio signal, and compares the output of the extension means with the output of the microphone amplification means to detect changes in the strength and ratio of the voice. Since it is equipped with a strength display means for displaying the degree of matching, the user can confirm whether there is a match or mismatch by singing the song while looking at the strength display means, which leads to the direction of the singing direction. In addition, it is possible to correctly recognize changes in the strength of a singer's original song.

DESCRIPTION OF EMBODIMENTS FIG. 3 shows an embodiment of the present invention. 1 is a first reproducing means for reproducing the first track of the magnetic recording medium, 101 is a reproducing head, and 102 is an amplifier. 2 is a second reproducing means for reproducing the second track of the magnetic recording medium;
is a playback head, and 202 is an amplifier. Reference numeral 301 denotes an extension means for extending and enlarging the rate of change in the strength of the output when the output level of the first reproduction means exceeds a certain value;
is an operational amplifier, 303 is a transistor, 305 is a smoothing capacitor, 306 is a diode, and 302 and 304 are feedback resistors. 4 is a microphone amplification means for converting and amplifying the user's singing voice into an electrical signal; 401 is a microphone; and 402 is an amplifier. Reference numeral 8 indicates a strength display means for comparing the output of the expansion means and the output of the microphone amplification means and displays whether the change in the strength or weakness of the voice, the ratio, etc. matches or mismatches, 801 indicates the output level of the expansion means, and 802 the output of the microphone amplification means. Show level. Reference numeral 9 denotes an amplification and amplification means that mixes and amplifies the outputs of the expansion means, the second reproduction means, and the microphone amplification means at arbitrary ratios, and amplifies the sound, 901 is an amplifier, and 902 is a speaker.

FIG. 4 is a magnetization time 1: sexual diagram for understanding the device of the present invention. 6 and 6 show the characteristics of the device of the invention.

Next, the operation of the present invention will be explained. The output of the first reproduction means 1 is expanded and expanded by the expansion means 3 to increase the rate of change. First, the reason why the decompression means 3 is necessary will be explained. FIG. 4 shows a magnetization characteristic curve of the magnetic recording medium 11. When the magnetic field H is increased, the magnetic flux B also increases, but the magnetic recording medium 1
The magnetic flux does not increase beyond the maximum magnetic flux Bm determined by the material of the first material.

Then, when the magnetic field H is removed, the residual magnetic flux Br changes to the magnetic medium 1.
1, and the maximum value of this BrO value is determined by the material. Therefore, even if a strong magnetic field H is applied, there is a limit to the level that can be recorded on the magnetic recording medium 11, and the magnetic recording medium 11 has saturation characteristics. This state will be explained using FIG. 5. The output voltage vo during reproduction with respect to the input voltage Vi during recording is saturated in the region of V12 or higher, as shown in A of the figure. This corresponds to the saturation characteristic.

In order to reduce the influence of this saturation region, the standard recording level is generally set lower than V 12 as shown in (11) in Figure 6, but if it is set too low, it will be affected by noise and the signal level to noise level ratio will decrease. becomes worse and produces an unpleasant sound.

Therefore, in general, the signal level to noise level ratio is 40.
Standard recording level ■11 to ensure decibels or more
is set. In this case, the difference between V l 2 and V l 1 is currently about 4 to 6 decibels, although it varies depending on the type of magnetic recording medium 11.

On the other hand, the dynamic range of audio is about 60 to 80 decibels, and the level is often about 20 decibels higher than the standard recording level v11. As a result, the signal enters the saturation region, and the recorded voice is distorted or recorded with little change in intonation or intensity.

Therefore, the song is recorded with fewer changes in the strength of the song sung by the singer, and this magnetic recording medium 1
Even if the user plays 1 and repeats it, he or she will not be able to recognize it correctly, and will learn the wrong changes in dynamics.

In order to improve this problem, the apparatus of the present invention has a structure in which a stretching means 3 shown in FIG. 3 is provided.

The professional singer's voice recorded on the first track of the magnetic recording medium 11 is reproduced and amplified by the first reproduction means 1. Then, this audio signal is expanded and expanded by the expansion means 3.

For example, if the level of the audio signal is the reference recording level V in FIG.
Feedback resistors 302 and 304 are set so that transistor 303 becomes non-conductive when L 1 or less. In this state, the input signal and output signal of the operational amplifier 301 are proportional. Standard recording level V x 1 in Figure 5
In the above input signal level region, the diode 306 is conductive and the transistor 303 is also conductive. Then, the impedance of the transistor 303 becomes low, and its value changes depending on the signal level driven from the operational amplifier 301 via the diode 306.

As a result, the negative feedback voltage is divided to a small value by feedback resistors 304 and 302 and transistor 303 and fed back to operational amplifier 301, increasing the gain of operational amplifier 301. Then, the characteristics are as shown in FIG. 6C.

In other words, the output of the decompression means 3 becomes characteristic B, which is a combination of the characteristics A and C in FIG. 5, and the audio signal of the song sung by a professional singer at the time of recording is faithfully reproduced.

For example, even if a professional singer sings in a loud voice and with changes in intonation and intensity, this state will be reproduced by the expansion means 3.

Note that the capacitor 306 functions as a rectifier and smoother, and also functions to determine the transient response characteristics of the expansion means 3.

Further, even if the output signal level of the operational amplifier 301 becomes large, the impedance of the transistor 303 becomes extremely small, and in order to prevent the entire extension means 3 from oscillating or the gain to change significantly, the diode 306 and the capacitor 305 are connected.
, ) The stability of the entire system is achieved by selectively setting transistors 303 and the like.

On the other hand, the accompaniment and bank chorus sounds recorded on the second track 112 of the magnetic recording medium 11 are reproduced and amplified by the reproduction means 2 of 2.1:'. Further, the user's singing voice is amplified by converting the voice into an electrical signal by the microphone amplifying means 4.

The amplifying and amplifying means 9 includes the expanding means 3. The outputs of the second reproduction means and the microphone amplification means 4 are mixed at an arbitrary ratio desired by the user, amplified by an amplifier 901, and amplified by a speaker 902.

As a result, the user can practice while listening to the correct song in the same state as when it was recorded on the magnetic recording medium 11 by a professional singer, in other words, the subtle dynamics, intonation, fist movements, etc. are reproduced.

Further, the strength display means 8 receives the output of the expansion means 3 and the output of the microphone amplification means 4, displays the output level of the expansion means 3 on the first display section 801, and displays the output level of the expansion means 3 on the second display section 802. The time at which the output level of microphone amplifier 3 and the output level of microphone amplifying means 4 are almost the same is displayed. In this way, the user can visually confirm changes in the strength of the professional singer's voice, further increasing the effectiveness of singing practice.

In addition to the above-described embodiment, the second display section 802 can also be configured to display the output level of the microphone amplification means 4 and display the user's voice. It is also possible to compare the change in strength of a professional singer's song with that of the user and display the match/mismatch as a score, but these examples will be omitted.

Next, how faithfully the singing voice of a professional singer is improved by the device of the present invention will be explained with reference to FIG. Dotted line G
represents the reproduction output of the first reproduction means 1, and the solid line E represents the output of the expansion means 3. Although the dotted line G shows little change in strength due to the non-linearity and saturation characteristics of the magnetic recording medium 11, the output of the expansion means 3 has a large change in strength. If the response characteristics of the decompression means 3 are set, the intensity changes will be the same as when a professional singer's singing voice is recorded on the magnetic recording medium 11, and the amount of change will be larger than the amount indicated by the dotted line G.

In other words, the changes in dynamics have been restored to their original state, and the enka fists, sharpness, accent, intonation, etc. that are influenced and affected by this have been faithfully reproduced to their original state. The user can listen to the sound almost restored to the original song by the professional singer using the amplifying loudspeaker means 9, and can visually check the change in intensity using the intensity display means 8, so that he can practice correctly and further improve his singing ability.

Effects of the Invention As described above, the present invention reproduces the singer's audio signal recorded on the first track of a magnetic recording medium using the first reproducing means, and uses the decompressing means to change the intensity of the signal back to the original original song. Since it can be heard using amplified loudspeaker means, it is possible to hear the singer's vocal volume as if it were coming closer, making the singer's voice louder, sharper, and louder.
accent.

It has the excellent effect of allowing you to correctly recognize intonation, and improving your singing ability through practice.

In addition, since the output of the expansion means and the output of the microphone amplification means are displayed by the strength display means, it is possible to visually confirm the differences in the strength of the singer and the user, which has the excellent effect of further increasing the practice effect. .

This means that people who practice singing using magnetic recording media can use the singer's singing as a teacher to check whether the user's singing ability is good or not.
It also provides an objective means of determining whether or not you are singing correctly.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a recording track of a magnetic recording medium, Fig. 2 is a block diagram of a conventional performance device, Fig. 3 is a block diagram of a main part of an embodiment of the present invention, and Fig. 4 is a block diagram of a magnetic recording medium. FIG. 5 is an input/output characteristic diagram of the stretching means of this embodiment, and FIG. 6 is a response characteristic diagram. DESCRIPTION OF SYMBOLS 1...First reproduction means, 2-...Second reproduction means, 3...Extension means, 4...Microphone amplification means, 8...Strength display means, 9 ...Amplification and public address means. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 5 Figure 1 Thick back XJ γ! Figure 6 time! j1-

Claims (1)

[Claims] a first reproducing means for reproducing an audio signal recorded on a first track of a magnetic recording medium; an expanding means for expanding a rate of change when the output level of the first reproducing means exceeds a set level; and a magnetic recording medium. a second reproduction means for reproducing the accompaniment signal recorded on the second track of the audio signal; a microphone amplification means for amplifying the microphone signal; An amplifying and amplifying means for mixing and amplifying each output at an arbitrary ratio to amplify the sound; and a strength display means for comparing the outputs of the expanding means and the microphone/microphone amplifying means and displaying whether the strength changes and ratios of the voices match or do not match. A performance device characterized by: