JPH05188980A - Electronic musical sound reproduction device - Google Patents

Abstract

PURPOSE:To prevent the amount of stored information from increasing by setting the terms of validity for image, music, and voice information stored on a storage medium respectively and erasing the information which has passed its term from the recording medium. CONSTITUTION:When the code of music to be reproduced is inputted through an input device 1 having plural keys operated to start and stop reproduction and select music to be reproduced, a control part 2 consisting of a CPU which controls the total operation of an orchestral accompaniment device 20 reads image, music, and voice information on the specified music out of the hard disk drive(HDD) 4 where the music, voice, and image information on plural pieces of music can be recorded additionally and erased. The image information is converted by an image reproduction device 11 into an image signal, which is displayed on a monitor 12. Then the musical sound signal is passed through a MIDI interface circuit 5 and converted by a MIDI sound source part 6 into a musical sound signal, which is passed through an ADPCM interface circuit 9 and converted into a voice signal by an ADPCM reproducing device 10; and the voice signal is mixed with the input voice from a microphone 14 by a mixing amplifier 7 and the composite voice is outputted from a speaker 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic music player.

[0002]

2. Description of the Related Art Normally, when digitizing music information and storing it in a storage medium such as a hard disk, a so-called MI is used.
DI (Musical Instrument Digital Interface) (MI
If DI is stored as registered trademark) information, many songs can be stored with a small capacity. For example, if there is a storage capacity of about 500 Mbytes, about 5000 songs can be recorded. Therefore, many songs can be stored with a small capacity, and it is known to be effective when applied to a karaoke device.

[0003]

However, when digitizing audio information such as back chorus and singing voice,
DPCM (Adaptive Differential Pulse Code Modula)
4 minutes per song (240
Seconds), the musical tone information occupies a capacity of 50 to 70 Kbytes per song, while the voice information of the back chorus and singing voice has a level C of ADPCM (level C is a sound quality equivalent to AM broadcasting and of the ADPCM system). It requires a capacity of 10 Kbytes per second for monaural sound of the poorest sound quality), and actually requires 2400 Kbytes for audio information per song. Therefore, in order to practice karaoke while listening to a singing voice in a karaoke device that reproduces music by MIDI, a huge amount of storage medium is required to maintain a certain number of songs.

For this reason, it is unreasonable to store voice information such as a back chorus or singing voice when a storage medium is used to store a song in a karaoke machine.
As a result, when a new song is stored in a storage medium and when practicing the song, it is not possible to meet the demand of the person who wants to practice while listening to the singing voice.

The present invention has been made to solve the above-mentioned problems, and provides an electronic music reproducing apparatus capable of effectively storing musical tone information and voice information even with a storage medium having a small capacity. The purpose is to provide.

[0006]

In order to achieve this object, an electronic music player of the present invention has a storage medium in which image information, musical tone information and voice information are stored, and a display means for reading the image information. An electronic music reproducing device having image reproducing means for displaying on the screen, and music reproducing means for reading out the musical tone information and voice information and outputting from a speaker, wherein new image information, musical tone information and voice information are stored in the storage medium. And a setting means for setting the expiration date of each information when storing the respective information, and the expiration date when it is determined that the expiration date has passed for each information. And erasing means for erasing the excess information from the storage medium.

[0007]

In the electronic music reproducing apparatus of the present invention having the above structure, the musical tone information and the voice information stored in the storage medium are output from the speaker by the music reproducing means and the image information is displayed by the image reproducing means. Displayed in.
Further, when the storage means stores new image information, musical sound information, and audio information in the storage medium, the setting means sets an expiration date for each piece of information, and when the expiration date has passed for each piece of information. The erasing means erases the expired information from the storage medium.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, an example in which the electronic music reproducing device of the present invention is embodied as a karaoke device is shown, and FIG. 1 is a block diagram showing its configuration.

The control unit 2 including a CPU for controlling the operation of the karaoke apparatus 20 as a whole includes an input device 1 including a plurality of keys for operating the start and stop of reproduction and selection of a music piece to be reproduced. A hard disk drive (hereinafter, referred to as HDD) 4 as a storage medium that stores music tone information of a song, voice information, and image information is connected. The HDD 4 can newly add and store musical tone information, voice information, and image information within the range of its capacity, or can erase such information. Also,
An operation program for operating the control unit 2 is stored in the program memory 3.

Further, the control section 2 is connected to a MIDI interface circuit 5 and a MIDI sound source section 6 as music reproducing means for converting the musical tone information read from the HDD 4 into a musical tone signal. A mixing amplifier 7 is connected to the MIDI sound source section 6, and a musical tone signal output from the MIDI sound source section 6 is amplified by the mixing amplifier 7.
The speaker 8 is configured to output.

Further, the control unit 2 has an ADPCM interface circuit 9 and an ADPC as a voice reproducing means for converting the voice information read from the HDD 4 into a voice signal.
The M playback device 10 is connected. The mixing amplifier 7 is connected to the ADPCM reproducing device 10,
The mixing amplifier 7 mixes and amplifies the musical tone signal from the MIDI sound source unit 6, the audio signal output from the ADPCM reproducing device 10 and the audio input from the microphone 14 connected to the mixing amplifier 7. Output from the speaker 8.

Further, the control unit 2 is connected to an image reproducing device 11 as an image reproducing means for converting the image information read from the HDD 4 into a video signal, and further,
A monitor 12 is connected to the image reproduction device 11, and a video output from the image reproduction device 11 is displayed on the monitor 12. Further, the control unit 2 is connected with a time measuring device 13 including a counter or the like for performing time management.

When using the karaoke device 20 having such a structure, first, the music code of the music to be reproduced is input from the input device 1, and a reproduction start command is given. Then, the control unit 2
Reads out the image information, the musical sound information and the voice information of the music designated by the input device 1 among the music stored in the HDD 4. Of these, the image information is converted into an image signal by the image reproducing device 11 and displayed on the monitor 12. The musical tone information is transmitted via the MIDI interface circuit 5 to MI.
The sound source signal is converted into a tone signal by the DI sound source unit 6, and the voice information is converted to an ADPC signal through the ADPCM interface circuit 9.
The M reproduction device 10 converts the voice signal into a voice signal, and the tone signal and the voice signal are combined with the voice input from the microphone 14 and amplified by the mixing amplifier 7 and output from the speaker 8.

Next, the storage form of each of the above information stored in the HDD 4 will be described with reference to FIG.

FIG. 2 shows the specific data types of the image information, tone information, and audio information stored in the HDD 4, the average data capacity per song, and the presence / absence of data expiration date setting. Show.

H is the musical tone information as the MIDI data described above.
When stored in the DD 4, it is generally known that a song of about 4 minutes requires a capacity of about 60 Kbytes to store the musical tone information of the song. Also,
Since the karaoke device 20 is used by an unspecified number of people, it is desired to constantly increase the tone information. Therefore, when the musical tone information is newly stored in the optical disc, the expiration date is not usually set.

Image information is stored in the HDD 4 as image data.
It is stored in. This image information is displayed as a background image on the monitor 12 in accordance with the reproduction (performance) of the musical tone information. Since one image is sufficiently reproduced to a photographic image, if it is an image of tens of thousands of colors, it becomes one song. Assuming that three attached images are to be played back, the image information is 100 per song.
A capacity of K bytes is required. Since this image information may be updated at any time, it is not necessary to set an expiration date.

Regarding the voice information, if the time required for the back chorus is 1/10 of a song whose playing time is 4 minutes (= 240 seconds), the ADPCM data is 10 Kbytes per second as described above. Since it is necessary, a capacity of 240 Kbytes is required for the back chorus ADPCM data. 1 in 10 songs need back chorus
If there are songs, AD of back chorus per song
An average capacity of 24 Kbytes is required for PCM data. Since this back chorus is indispensable in the karaoke apparatus 20 like the musical tone information, an expiration date is not usually set when storing it in the HDD 4, like the musical tone information.

Regarding the ADPCM data of the song of the voice information, if the ADPCM data of the song is stored in the HDD 4, there is an advantage that it is possible to practice while listening to the song when practicing karaoke. It is desirable to store the song ADPCM data for all songs in the HDD 4. However, since there is a singing section for about 80% of the playing time of one song (192 seconds), a capacity of 1920 Kbytes is required for each song as ADPCM data. On the other hand, it is effective for the karaoke device 20 to store a large amount of musical sound information. Therefore, regarding the ADPCM data of a song, if two months have passed since the song was stored, it can be deleted from the HDD 4. , ADPCM data can be prevented from increasing.

That is, as shown in FIG.
When storing a song in D4, the image information, tone information and voice information of the song are stored in the HDD 4 (S1),
The expiration dates of the image information, tone information, and audio information are input by the input device 1 (S2). Then, the control unit 2 constantly compares the expiration date of each piece of information with the date and time of the clock device 13 to drive the HDD 4 for the information that has passed the expiration date (S3, YES), and stores the information. It is erased from the HDD 4 (S4).

Further, in the case of the karaoke device 20 which displays advertisement or message information between songs on the monitor 12, the advertisement or message information is code data like the lyrics information used for karaoke, and per song Then, a capacity of about 1 Kbyte is sufficient. Although the lyrics information is not erased forever, some advertisements and message information may be dated, so that the expiration date is set by the input device 1 when storing in the HDD 4. Then, the control unit 2 constantly compares the expiration date of each of the information with the date and time of the clock device 13,
For the information whose expiration date has passed, the HDD 4 is driven to erase the information from the HDD 4.

In this way, the expiration date is set for each information,
The data for 2000 songs is initially stored in the HDD 4,
FIG. 3 shows a change in capacity of various information stored in the HDD 4 when new song data for 20 songs is added every month. At this time, for the ADPCM data of the song, the input device 1 sets the expiration date to two months later. Initial 2
If no song ADPCM data is added to the data for 000 songs, and the capacity occupied by image information, tone information, and back chorus ADPCM data per song is as described above, it is necessary to initially store 2000 songs. The total capacity is 370 Mbytes. After that, when I add 20 new songs every month, regarding the new songs, the song ADPCM
When the data is also stored in the HDD 4, one month after the initial 2000 songs are stored, the ADPCM data of the song is added by 38.4 Mbytes for 20 songs, and image information other than the song, musical sound information, and ADPCM of the back chorus are added. Only 3.7 Mbytes are added as data such as data, for a total of 412.1 Mbytes. Similarly, one month later,
38.4 Mbytes of song ADPCM data and 3.7 Mbytes of other data are added to make a total of 454.2 Mbytes.

[0024] Further, one month later, the AD
PCM data 38.4 Mbytes and other data 3.7
M bytes are added, but when the date and time of the clock device 13 and the expiration date are compared, the control device 2 deletes the ADPCM data of the song stored two months ago.
Since the HDD 4 is driven, only 3.7 MB is added in the end, resulting in a total of 457.9 MB. After that, even if 20 new songs are additionally stored each month, the amount of data increases by 3.7 Mbytes each month, so that it is possible to prevent a sudden increase in the amount of data.

The present invention is not limited to the embodiments described in detail above, and modifications can be made without departing from the spirit of the invention.

For example, initially 2000 songs may be stored in the CD-ROM and only the additional songs may be added to the HDD 4. Also,
In addition to the ADPCM data regarding the song, the expiration date may be set for the ADPCM data regarding the back chorus and the tone information. Although the HDD 4 is used as the storage medium, a magneto-optical disk or the like may be used. Further, if it is desired to extend the expiration date once set to two months, the data in the HDD 4 may be directly corrected at the store where the karaoke device 20 is installed, or the data is connected online. In this case, the correction operation may be performed from the host computer side.

[0027]

As is clear from the above description, according to the electronic music reproducing apparatus of the present invention, the expiration date is set for each of the image information, the musical tone information and the voice information stored in the storage medium, Since the expired information can be erased from the storage medium, it is possible to prevent an increase in the amount of information stored in the storage medium.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a karaoke device which embodies an electronic music reproducing device of the present invention.

FIG. 2 is an explanatory view showing the capacity of various information stored in the HDD and the presence / absence of setting of an expiration date in the karaoke apparatus of the present embodiment.

FIG. 3 is an explanatory diagram showing a change in capacity of various information stored in the HDD in the karaoke apparatus of the present embodiment.

FIG. 4 is a flowchart showing a subroutine for storing and erasing various pieces of information about a song in the karaoke apparatus of this embodiment.

[Explanation of symbols]

 1 Input Device 2 Control Unit 4 Hard Disk Drive (HDD) 6 MIDI Sound Source Unit 7 Mixing Amplifier 8 Speaker 10 ADPCM Playback Device 11 Video Playback Device 12 Monitor 13 Timing Device

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Claims (1)

[Claims] 1. A storage medium in which image information, musical tone information and voice information are stored, image reproducing means for reading the image information and displaying it on a display means, and the musical tone information and voice information for reading out from a speaker. In an electronic music reproducing device having a music reproducing means for storing, a storage means for storing new image information, musical sound information and voice information in the storage medium, and an expiration date of each information when storing each of the information. And setting means for setting, and erasing means for erasing the expired information from the storage medium when it is determined that the expiration date has passed for each of the information. Electronic music player.