JPS6350971A - Sound signal reproducing device - Google Patents

Abstract

PURPOSE:To permit a repeated drill to be performed until coincidence in the beginning of singing of a song can be obtained, by detecting a reproduced signal from which position it is reproduced, and detecting the beginning position of singing of the song. CONSTITUTION:The reproduced position of a signal reproduced by a reproducing means 2 is always detected by a first position detecting means 4, and it is managed by a judging means 6 which position is reproduced at present. When the fact is detected that the position of the signal reproduced by the means 2 goes to the same position as the beginning position of singing of the song, that is the output of a second position detecting means 5, the output of a signal presence detecting means 3 is set at an L level, if no signal is inputted from a microphone input means 1. In this way, the means 6 outputs the signal judging it as the absence of a microphone input signal, to a control means 7, and controls a system so as to start reproduction from the beginning of a music by controlling the traveling of the means 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a two-page apparatus for reproducing audio signals from compact discs and the like.

Conventional technology As a field of audio equipment, music signals played by musical instruments recorded on recording media such as magnetic tapes are played back and amplified, and when a user sings along with the signals, the signals are mixed with the music signals played. There is an audio signal reproducing device that amplifies the sound. It's commonly said, ``
It is called a ``karaoke machine'' and is widely used for home or business use.

A conventional karaoke device will be explained below.

FIG. 4 is a configuration diagram of a conventional karaoke apparatus, in which 201 is a magnetic tape, 202 is a magnetic head, 203 is an amplifier that amplifies the signal from the magnetic head 202, 101 is a microphone,
102 is an amplifier that amplifies the signal from the microphone 101;
is a mixing amplifier that mixes and amplifies the signals from the amplifiers 102 and 203, 1o is a power amplifier that amplifies the power of the signal from the mixing amplifier 9, and 11 is a speaker that outputs the signal from the power amplifier 1o as an acoustic signal. .

The operation of the karaoke apparatus configured as described above will be explained on the following three pages.

First, the magnetic head 202 reproduces a music signal played from the magnetic tape 201. Next, the performance music signal reproduced by the magnetic head 202 is amplified by the amplifier 203, the mixing amplifier 9, and the power amplifier 10, and output as an acoustic signal to the speaker 11.

When a person sings a song using the microphone 101 while listening to the acoustic signal output by the speaker 11, the audio signal input from the microphone 101 is amplified by the amplifier 102 and then by the amplifier 203. The signal is mixed with the performance music signal, amplified by the mixing amplifier 9 and the power amplifier 1o, and outputted to the speaker 11 as an acoustic signal in which the performance music signal and the voice signal of the person singing the song are mixed.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, the singer judges the beginning of the song while listening to the performance music signal and starts singing. beginning 9
However, when singing a song that one does not understand well, the beginning of the song often shifts and the song often sounds unsatisfactory.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide an audio signal reproducing device that allows a user to practice over and over again with the right start of a song.

Means for Solving the Problems In order to achieve this object, the audio signal reproducing apparatus of the present invention comprises: a signal presence/absence detecting means for detecting the presence or absence of a signal from a microphone; a signal reproducing means for reproducing a music signal; first position detection means for detecting from which position on the recording medium the signal reproduced by the signal reproduction means is reproduced;
a second position detecting means for detecting the starting position of the song from the signal reproducing means, and when the song starting position information by the second position detecting means and the reproduction position information by the first position detecting means match; The apparatus includes a determining means for determining whether the output of the signal presence/absence detecting means is in a state where a microphone signal is present, and a control means for controlling the signal reproducing means based on the output of the determining means.

6 Page Operation The present invention, with the above-described configuration, allows the singer to practice repeatedly until the beginning of the song matches, and it is possible to improve the singing ability of the singer.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram of an audio signal reproducing device according to an embodiment of the present invention. 1 is a microphone input means for converting the user's singing voice into an electrical signal and amplifying it; 101 is a microphone; and 102 is an amplifier.

2 is a signal reproducing means for reproducing and amplifying a signal from a recording medium; 201 is a recording medium on which the singing start position is recorded in advance; 202 is a magnetic head for detecting the position signal from the recording medium; 203 is an amplifier. . 204 is a magnetic head that detects a music signal from the recording medium 201, and 206 is an amplifier. 3 is a signal presence/absence detection means for detecting whether or not audio is input to the microphone input means 1, and 301 is a comparator. 4 is a first detecting means for detecting which six page position the signal reproducing means 2 is currently reproducing. Reference numeral 5 denotes a second position detecting means, which detects in advance the singing start position of the signal reproduced by the signal reproducing means 2 before the singing start position is reproduced. The first position detecting means 4 and the second position detecting means 5 can be realized by detecting subcodes when the recording medium is a compact disc. Reference numeral 6 denotes a determining means that compares the signal detected by the second position detecting means 5 and the signal detected by the signal presence/absence detecting means 3 and makes a decision. Reference numeral 7 denotes a control means for controlling the reproducing means 2 in response to a signal from the determining means 6.

The operation of the audio signal reproducing apparatus of this embodiment configured as described above will be explained below.

First, the magnetic tape 201 on which the starting position of the song is recorded in advance is played back by the magnetic head 2o2 and the amplifier 203. The signal reproduced by the reproduction means 2 is 8
, 9.10, and the speaker 1
1, it is output as an acoustic signal. Further, the reproduction position of the signal reproduced for seven pages by the reproduction means 2 is constantly detected by the first position detection means 4, and the determination means 6 manages the position currently being reproduced.

When it is detected that the position of the signal reproduced by the reproduction means 2 is the same as the starting position of the song, which is the output of the second position detection means 5, the signal from the microphone input means 1 exceeds a certain level. If not, the output of the signal presence/absence detecting means 3 becomes "L" level, and the determining means 6 outputs a signal determining that there is no microphone input signal to the controlling means 7, and controls the running of the reproducing means 2. control so that playback starts repeatedly from the beginning of the song. When it is detected that the position of the signal reproduced by the reproduction means 2 is the same as the starting position of the song, which is the output of the second position detection means 6, the signal from the microphone input means 1 is detected to be at a certain level or higher. If it is at the signal level, the output of the signal presence/absence detecting means 3 becomes "H" level, so the determining means 6 outputs a signal determining that there is a microphone input signal to the controlling means 7, and the controlling means determines that =1. Since the playback state of the song is maintained, the user can continue singing along with the playback music signal.

Further, when an audio signal is inputted to the microphone input means 1 at a level higher than a certain level at a position before the starting position of the song obtained from the output of the second position detection means 5, the second position detection means 5 The determining means 6 calculates the difference between the position information output of the first position detecting means 4 and the position information output of the first position detecting means 4, outputs a signal to the control means 7, controls the reproducing means 2, and advances the song to the starting position 9. A person can sing in synchronization with the beginning of his or her own singing and the beginning of the song.

The output signals of the three detection means are input to the microcomputer 601 to perform the above-mentioned judgment processing. The following describes operations related to playback position detection and microphone input signal presence/absence detection.

First, in step 61, the second position detecting means 6 detects the position information of the beginning of singing on the recording medium 201 and stores it in the microcomputer 601. Next, the first position detecting means 4 detects the current playback 1 position, and in step 63 on page 9, it is determined whether the current playback position is the starting position of the song. At this time, if it is determined that the song is at the starting position, it is determined in step 64 whether or not there is a microphone input signal based on the output of the comparator 301. At this time, if the output of the comparator 301 is at H" level and it is determined that there is a microphone input signal, the playback operation continues, but the comparator 301
When the output of 01 is "L" level and it is determined that there is no microphone input signal, a signal is outputted to the control means 7 in step 66 to control the signal reproduction means 2 to return to the beginning of the song and start reproduction again. do. Further, in step 63, it is determined based on the output of the first detection means 5 that the position of the currently reproduced signal is not the position where the song begins, that is, the current reproduction position is a position closer to the position where the song begins. If it is determined that there is, step 6
In step 6, it is determined whether there is a microphone input signal based on the output of the comparator 601, and when it is determined that there is no microphone input signal, the process returns to step 62.The above processing operation is repeated and it is determined that the microphone input signal is present. When this happens, a signal is output to the control means 7 in step 67 to control the signal reproduction means 2, and the reproduction position of the recording medium 201 is moved to the position stored in step 61 on page 10, and the reproduction starts from the position where the song starts. Start.

As described above, according to this embodiment, position information such as the starting position of a song is recorded on the recording medium 201, and the first position detecting means 4 and the second position detecting means 5 detect the signal reproduction position. By doing so, the reproducing means 2 can be controlled according to the state of the microphone input signal.

In this embodiment, the playback means 2 is a tape recorder, but the playback means 2 may also be a magnetic playback device such as a video tape recorder, an optical playback device such as a compact disc player, or an electrostatic playback device. . If a disk-shaped recording medium is used for reproduction, the distance the reproduction position must be moved can be shortened, and the time required for the movement can be shortened.

Furthermore, in the case of a digital signal recording medium such as a compact disc player, a large amount of information can be recorded, and it is easy to return to a preset position in a short time. This can be said to be convenient.

Effects of the Invention The present invention provides a signal detection means for detecting the presence or absence of a signal from a microphone, a signal reproduction means for reproducing a music signal, and a position on a recording medium at which the signal reproduced by the signal reproduction means is reproduced. a first position detecting means for detecting whether the signal is a signal; a second position detecting means for detecting the starting position of the song from the signal reproducing means; and song starting position information from the second position detecting means. determining means for determining whether or not the output of the signal presence/absence detecting means is in a state where a microphone signal is present when the reproduction position information obtained by the first position detecting means matches; By providing a control means for controlling the upper signal reproduction means, when the user sings along with the reproduction signal, the user can practice repeatedly until the beginning of the song matches the beginning of the singing, thereby improving the singing ability. It is possible to realize an excellent audio signal reproducing device that can improve the sense of rhythm by practicing intensively over and over again.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an audio signal reproducing device according to an embodiment of the present invention, FIG. 2 is a specific block diagram of main parts of the device,
FIG. 3 is a flowchart showing the main processing operations of the device;
FIG. 4 is a block diagram of a conventional audio signal reproducing device. 1...Microphone input means, 2...Signal reproducing means, 3...Signal presence/absence detection stage, 4...
. . . first position detection means, 5 . . . second position detection means, 6 . . . determination means, 7 . . . control means. Name of agent: Patent attorney Toshio Nakao and one other person L-
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Claims (1)

[Claims] a signal presence/absence detection means for detecting the presence or absence of a signal from a microphone; a signal reproduction means for reproducing a music signal; and a signal reproduction means for detecting from which position on a recording medium the signal reproduced by the signal reproduction means is a signal reproduced. a second position detecting means for detecting the starting position of a song from the signal reproducing means; and song starting position information from the second position detecting means and reproduction by the first position detecting means. determining means for determining whether the output of the signal presence/absence detecting means is in a state where a microphone signal is present when the position information matches; and a control means for controlling the signal reproducing means in accordance with the output of the determining means. An audio signal reproducing device comprising: