JP2002287774A - Music reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce music data with a tone quality preliminarily adjusted for every piece of music. SOLUTION: Not only music data of a lot of pieces of music but also tone quality data used to adjust the tone quality at the time of reproducing music data of each piece of music is recorded in a memory card 12 correspondingly to music data of each piece of music. When reproducing music data of an arbitrary piece of music, a CPU 22 takes in tone quality data corresponding to the music data and supplies them to a tone quality controller 24. The tone quality controller 24 performs tone quality adjustment processing of music data decoded by a DSP 22 in accordance with tone quality data supplied from the CPU 22 and inputs music data after adjustment to a D/A converter 24. A music sound converted by the D/A converter 24 is inputted to a headphone 32 through an audio amplifier 28 and an output terminal 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music reproducing apparatus, and more particularly, to a music reproducing apparatus for reproducing a plurality of music signals recorded on a recording medium.

[0002]

2. Description of the Related Art As a conventional music reproducing apparatus of this kind, there is an apparatus provided with a function capable of arbitrarily adjusting the sound quality of a music signal. According to such a music reproducing apparatus, the operator can listen to each music with his / her favorite sound quality by adjusting the sound quality in accordance with the genre and the melody of the music.

[0003]

However, in the conventional music reproducing apparatus, if the user tries to listen to each music with his / her favorite sound quality, the sound quality is manually adjusted every time the genre or melody of the music to be heard changes. There was a problem that it was very troublesome.

[0004] Therefore, the main object of the present invention is to provide:
It is an object of the present invention to provide a music reproducing apparatus that can listen to a song whose degree of sound quality has been adjusted with the same sound quality as that previously adjusted without having to adjust the sound quality again.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a music reproducing apparatus for reproducing a plurality of music signals recorded on a recording medium, wherein the adjusting means adjusts the sound quality of the music signals arbitrarily for each music. A music reproducing apparatus comprising: a recording unit that records an adjustment value on a recording medium in association with a music signal; and a reproduction unit that reproduces each music signal with sound quality according to the associated adjustment value.

[0006]

According to the present invention, a plurality of music signals are recorded on a recording medium. Each of these music signals is reproduced by reproducing means. The sound quality of the music signal can be arbitrarily adjusted for each music piece by the adjusting means. The adjustment value by the adjusting means is recorded on the recording medium by the recording means in association with each music signal. When reproducing each music signal, the reproducing means reproduces the music signal with a sound quality according to the adjustment value associated with the music signal to be reproduced. Therefore, for a song whose sound quality has been adjusted once,
Even if the sound quality is not adjusted again, the music signal is reproduced with the same sound quality as that previously adjusted.

In another embodiment of the invention, the adjusting means comprises:
Adjustment value storage means in which a plurality of different adjustment values are stored in advance, selection means for arbitrarily selecting one of the plurality of adjustment values stored in the adjustment value storage means, and a music signal according to the selected adjustment value. An adjustment executing means for adjusting sound quality is included.

In this case, it is desirable that each adjustment value is defined for each genre of music.

In still another embodiment of the present invention, the recording medium is made detachable.

In another embodiment of the present invention, there is further provided setting means for setting an adjustment value by the adjustment means as a default value. Then, when the adjustment value is not associated with the audio signal, the reproducing means reproduces the audio signal with the sound quality according to the default value.

[0011]

According to the present invention, a tune whose sound quality has been adjusted once can be heard with the same sound quality as that previously adjusted without having to adjust the sound quality again. Therefore, unlike the above-described conventional music reproducing apparatus, the troublesome work of manually adjusting the sound quality every time the genre or melody of the music to be listened changes can be omitted.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0013]

1 shows a music reproducing apparatus 10 according to this embodiment shown in FIG.
Is a portable type, for example, for reproducing music data of a plurality of songs recorded on the memory card 12. Further, the music reproducing apparatus 10 can arbitrarily select the sound quality when reproducing the music data of each song from three patterns of sound quality [A], sound quality [B] and sound quality [C]. ing. Here, sound quality [A] is sound quality suitable for playing jazz music, sound quality [B] is sound quality suitable for playing pop music, and sound quality [C] is sound quality.
Sound quality suitable for playing rock songs. further,
The music reproducing device 10 records sound quality data corresponding to the selected sound quality pattern (genre) on the memory card 12 in association with the music data of each song,
When reproducing the music data of each music, the music data of each music is reproduced with the sound quality according to the sound quality data associated with each music.

Referring to FIG. 2, memory card 12 includes:
A plurality of music files respectively corresponding to each song, here, song [1], song [2], song [3], and song [4]
Music files 120, 122, 124, and 12 for music pieces
6 are recorded. And each music file 120 ~
In 126, the music data of the corresponding song is
It is stored in a state of being compressed according to a predetermined compression format such as MP3 (MPEG-1 AUDIO Layer 3) or TwinVQ which is generally known. In addition, each of the music files 120 to 126 also stores decoding software (decoding program) for expanding compressed music data stored in each of the music files.

A music file 12 is stored in the memory card 12.
In addition to 0 to 126, another file called a playlist file 128 is also recorded. Referring to FIG. 3, the playlist file 128 includes, for each song, information indicating the order in which the music data is played back, the song title, the artist name, the genre, and the size (capacity) of the music data, as described above. And sound quality data. The figure shows an example in which the order in which music data is reproduced is set in the order of music [4] → music [1] → music [3] → music [2]. The order in which these music data are reproduced can be set arbitrarily. However, since the procedure for setting the data is not directly related to the gist of the present invention, a detailed description is omitted here.

The memory card 12 is a detachable recording medium, and the music reproducing apparatus 10 has a slot 14 for mounting the memory card 12. To play back music data of each song recorded on the memory card 12, first, the memory card 12 is inserted into the slot 14.
Attach to Thereby, the memory card 12 is connected to the CPU (Central Processes) via the memory interface 16.
sing unit) 18. At this time, C
The PU 18 takes in the playlist file 128 from the memory card 12 via the memory interface 16.
Thereby, the CPU 18 recognizes what kind of music data is recorded on the memory card 12 and what kind of music data should be reproduced in what order. And CPU1
Numeral 8 starts a music data reproducing operation in response to a reproduction start command from the operation key 20, specifically, in response to a pressing of a reproduction / stop key 20a described later, which constitutes the operation key 20.

That is, when the play / stop key 20a is pressed, the CPU 18 transfers the first music file, here the music file 126 of the music [4], via the memory interface 16 in accordance with the reproduction order in the reproduction list file 128. From the memory card 12. And the CPU 18
The compressed music data stored in the music file 126 and the decoding software
(Digital Signal Processor) 22. At the same time, the CPU 18 converts the music data of the song [4] into the sound quality [B] according to the sound quality data in the playlist file 128.
The sound quality adjustment command is sent to the sound quality controller
To supply.

The DSP 22 decompresses (decodes) the music data using the decoding software supplied from the CPU 18 and transmits the decompressed music data to the sound quality controller 24.
To enter. The sound quality controller 24 performs sound quality adjustment processing on the expanded music data input from the DSP 22 according to a sound quality adjustment command supplied from the CPU 18.
The music data after the sound quality adjustment is input to the D / A converter 26, where it is converted into an analog music signal. The converted music signal is amplified by the audio amplifier 28 and then input to the headphones 32 via the output terminal 30, whereby the music data of the song [4] is reproduced with the sound quality [B].

When the reproduction of the music data of the music [4] is completed, the CPU 18 transfers the music file 120 of the next music, here music [1], through the memory interface 16 in accordance with the reproduction order in the reproduction list file 128. From the memory card 12. Thereafter, the music data of the song [1] stored in the music file 120 is reproduced according to the same procedure as described above. When the reproduction of the music data of the music [1] is completed, the music data of the music [3] and the music [2] are reproduced according to the reproduction order in the reproduction list file 128 in the same manner as described above. In order to stop the reproduction operation, the reproduction / stop key 20a described above may be pressed again.

The CPU 18 includes a liquid crystal display 34.
Is connected, and the CPU 18 displays a screen as shown in FIG. 4 on the display 34 when the music data of each song is reproduced (or when the music data is reproduced). (A) of the figure is a diagram showing a state when music data of music [4] is being reproduced. As shown in this figure, the display 34 has a horizontally written character string 34a “TRACK 4” representing the music number (track number) of the music data currently being reproduced, and “A” representing the music title of the music data currently being reproduced.
AAAAAAAA ”, a horizontal character string“ SOUND: ”as a title of sound quality 3
4c and a horizontally written character string 34d of “Pops” representing the current sound quality pattern are displayed in order from the top.

In the state of FIG. 4A, the music [4]
When the reproduction of the music data of the music [1] is completed and the music data of the music [1] is reproduced next, the display of the display 34 becomes
The screen changes to a screen as shown in FIG. That is, each of the character strings 34a, 34b, and 34d except for the character string 34c as a title is switched to a description relating to the music data of the newly reproduced music [1] in accordance with the information in the playlist file 128. Specifically, the character string 34a representing the song number is switched to the notation “TRACK 1”, and the character string 34b representing the song title is replaced with “BBBBBBBB”.
B ". Then, the character string 34d representing the sound quality pattern is switched to the notation “Jazz”. When the music data of the other music [2] and music [3] is reproduced, similarly, the reproduction list file 1
According to the information on each of the music [2] and the music [3] in 28, the notation of each of the character strings 34a, 34b and 34d except the character string 34c is switched.

In FIG. 4A or FIG. 4B, six keys 20a to 20f constituting the operation keys 20 are arranged in two rows and three columns below the display 34. Among them, the play / stop key 20a described above
Are located in the center of the upper row. An FF (Fast-Forward: fast forward) key 20b and an R (Fast-Forward) key are provided at both ends of the upper row with the play / stop key 20a interposed therebetween.
An EW (Rewind: fast rewind) key 20c is arranged.

The FF key 20b and the REW key 20c are keys for arbitrarily specifying music data of a music to be reproduced irrespective of the reproduction order in the reproduction list file 128. is there. Specifically, when the FF key 20b is pressed, the CP
U18 sequentially switches, that is, locates the music data of the music to be reproduced in a direction according to the reproduction order in the reproduction list file 128. On the other hand, when the REW key 20c is pressed, the CPU 18 sequentially locates the music data of the music to be reproduced from now on in a direction opposite to the reproduction order in the reproduction list file 28. After locating the music data of the music to be reproduced in this way and pressing the play / stop key 20a, the CP
U18 reproduces the music data of the music in the same procedure as described above. Note that this FF key 20b or REW
When the cue is performed by operating the key 20c,
In response to these key operations, U18 displays each character string 3 on the display 34 in FIG. 4 (a) or FIG. 4 (b).
4a, 34b and 34d are switched to notations relating to the music data of the cueed music.

Each key 20 constituting the operation keys 20
Among the rows a to 20f, a volume up key 20d and a volume down key 20e for adjusting the volume when reproducing the music data are arranged at the center and the right end of the lower row, respectively. That is, when the volume up key 20d arranged at the center is pressed, the CPU 18 instructs the DSP 22 to increase the volume. According to this instruction
The DSP 22 performs a process for reproducing music data at a volume higher than the current volume. On the other hand, when the volume down key 20e arranged at the right end is pressed, the CPU 18
22 is instructed to lower the volume. In accordance with this instruction, the DSP 22 performs a process for reproducing music data at a volume lower than the current volume.

A key 20f arranged to the left of the volume down key 20d is a mode switching key for arbitrarily setting the sound quality for each music piece. That is, when the mode switching key 20f is pressed, the CPU 18 enters the sound quality setting mode. When entering the sound quality setting mode, C
The PU 18 displays a screen as shown in FIG. 4A is a diagram showing a state when the mode switching key 20f is pressed in the state of FIG. 4A, and the sound quality at the time of reproducing the music data of the song [4] is to be set. FIG.

As shown in the figure, in the sound quality setting mode,
The CPU 18 replaces the character string 34d on the display 34 shown in FIG. 4A or 4B with three character strings “Rock”, “Pops”, and “Jazz” representing all sound quality patterns, respectively. 34e, 34f and 34g are displayed side by side in a row. At the same time,
The CPU 18 generates a rectangular cursor 34h for arbitrarily setting a sound quality pattern represented by each of the character strings 34e to 34g.
Is also displayed on the display 34. FIG. 5 (a)
Indicates a state in which a sound quality pattern (sound quality [B]) suitable for reproducing “Pops” is selected by the cursor 34h.

Here, it is assumed that the mode switching key 20f is depressed once in the state shown in FIG. Then, although not shown, the CPU 18 moves the cursor 34h to “Rock”.
On the character string 34e. When the mode switching key 20f is pressed once more, the CPU 18
Sets the cursor 34h to the character string 34g "Jazz"
Move over Further, the mode switching key 20f is set to 1
When pressed twice, the CPU 18 moves the cursor 34h again onto the character string 34f of “Pops”. Thus, each time the mode switching key 20f is pressed once,
The CPU 18 executes “Pops” → “Rock” → “Jaz
The cursor 34h is sequentially and recursively moved on each of the character strings 34e, 34f and 34g in the order of "z" → "Pops".

After moving the cursor 34h to select one of the character strings 34e to 34g in this way, it is assumed that the play / stop key 20a is pressed. Then, CPU
Reference numeral 18 denotes a sound quality pattern corresponding to the character string 34e, 34f or 34g currently selected by the cursor 34h at the time of reproducing the music data of the music whose sound quality is to be set, in this case, music [4]. The sound quality pattern is set, that is, the corresponding sound quality data in the playlist file 128 is rewritten. At the same time, CP
U18 converts the sound quality data corresponding to the set sound quality pattern into an EEPROM as initial sound quality data to be described later.
36 is also stored. Further, the CPU 18 determines whether the CPU
Character strings 34e to 34g and the cursor 34h in
5B, a character string 34i representing the set sound quality pattern is displayed on the display 34. Note that FIG. 11 shows a state in which music data of music [4] is set to be reproduced in a sound quality pattern (sound quality [A]) suitable for reproducing “Jazz”. Then, after the screen shown in the same figure is displayed on the display 34, the CPU 18 exits the sound quality setting mode. Thus, the screen display of the display 34 is as shown in FIG. Thereafter, when the music data of the song [4] is reproduced, the music data is reproduced with the sound quality according to the rewritten sound quality data in the reproduction list file 128. That is, according to the state shown in FIG. 6, although the genre of the song [4] is pop, the music data of the song [4] is a sound quality pattern (sound quality [A]) suitable for playing jazz. Will be played back.

When setting (changing) the sound quality when reproducing music data for a song other than the song [4], the FF key 20b or the REW key 20c described above is used.
Operation to find the music data of the song whose sound quality is desired to be set. Then, after this cueing, the mode switching key 20f is depressed to enter the sound quality setting mode, and the sound quality may be arbitrarily set in the same procedure as described above.

Further, the music reproducing apparatus 10 of this embodiment
Has a function of downloading desired music data (music file) to the memory card 12 using the Internet. For this purpose, the music playback device 10
A USB (Univ.) For connecting a communication device such as a personal computer (not shown) connectable to the Internet.
ersal Serial Bus) terminal 38.

That is, music data fetched from the Internet via a communication device is input to the CPU 18 via the USB terminal 38 and the external interface 40. The CPU 18 records the fetched music data on the memory card 12 via the memory interface 16,
That is, download. At this time, the CPU 18
A music file is created in the memory card 12, and music data imported from the Internet is downloaded into the newly created music file. At the same time, C
The PU 18 adds information on the downloaded music data to the playlist file 128 in the memory card 12.

However, no sound quality data is added to the music data immediately after being downloaded from the Internet in this way. Therefore, when reproducing such music data, the CPU 18 controls the sound quality controller 24 so as to reproduce the music data with the sound quality according to the initial sound quality data recorded in the EEPROM 36 (strictly speaking, the initials). A sound quality adjustment command according to the sound quality data is supplied to the sound quality controller 24).

By the way, the music reproducing apparatus 10 of this embodiment
When the music data of each song recorded on the memory card 12 is being played back, the CPU 18 switches the sound quality of the music data for each song by processing the flowchart shown in FIG. Note that a so-called control program for controlling the operation of the CPU 18 based on this flowchart is stored in a program memory (not shown) in advance.

As shown in the figure, in step S1, the CPU 18 confirms whether or not the music data of a certain music is to be reproduced. Here, when it is confirmed that music data of a certain song is to be reproduced, C
The PU 18 proceeds to the next step S3. On the other hand, in step S1, if it is confirmed that the music data of any one of the songs is currently being reproduced, or that no music data is being reproduced and the music reproducing device 10 itself is in a stopped state. The CPU 18 terminates the flow of FIG. 7 and returns to the main routine (not shown).

In step S3, the CPU 18
Whether the sound quality data of the song to be played back is stored in the playlist file 128, in other words, for the song to be played back, the sound quality has been adjusted in the sound quality adjustment mode at least once in the past. Check if there is. Here, the sound quality data of the music to be reproduced is stored in the reproduction list file 128.
If it is confirmed that the value is within the range, the CPU 18 proceeds to step S5. Then, in this step S5, the CP
The U18 controls the sound quality controller 24 so as to reproduce the music data of the music with the sound quality according to the sound quality data in the play list file 128 (strictly speaking, a sound quality adjustment command according to the corresponding sound quality data in the play list file 128). Supplied to the sound quality controller 24). This step S
After processing 5, the CPU 18 ends the flow of FIG. 7, and actually reproduces the music data in another reproduction flow (not shown).

On the other hand, if it is confirmed in step S3 that the sound quality data of the music to be reproduced is not in the reproduction list file 128, the CPU 18
Proceeds to step S7. In this step S7,
The CPU 18 controls the sound quality controller 24 so that the music data of the music is reproduced with the sound quality according to the initial sound quality data recorded in the EEPROM 36 described above. After processing this step S7, the CPU 1
8 ends the flow of FIG. 7 in the same manner as when the processing of step S5 ends, and actually reproduces the music data in the above-described reproduction flow.

In the sound quality setting mode described above, the CPU 18 processes the flowchart shown in FIG. A control program for controlling the operation of the CPU 18 based on this flowchart is also stored in the program memory in advance.

As shown in the figure, the CPU 18 determines in step S11 whether or not a sound quality switching operation has been performed, specifically, a desired sound quality pattern using the mode switching key 20f (the cursor 34h has been moved). After that, it is confirmed whether or not a certain sound quality pattern is set by depressing the play / stop key 20a. Here, upon confirming that the sound quality switching operation has been performed, the CPU 18 proceeds to the next step S13. On the other hand, when it is confirmed in step S11 that the sound quality switching operation has not been performed,
The CPU 18 terminates the flow of FIG. 8 and returns to the main routine (not shown).

In step S13, the CPU 18
Writes the sound quality data set by the above-described sound quality switching operation into the EEPROM 36 as initial sound quality data. Then, the CPU 18 proceeds to step S15, where it checks whether or not the sound quality data of a certain music piece is designated as a sound quality setting target. This designation is made in advance by another flow (not shown). Then, step S1
When it is confirmed in step 5 that music data of a certain song is designated, the CPU 18 proceeds to step S17,
Here, the playlist file 1 corresponding to the designated song
The sound quality data in 28 is rewritten to data corresponding to the sound quality pattern newly set in step S11.
After rewriting the sound quality data, the CPU 18 proceeds to step S19, where the CPU 18 controls the sound quality controller 24 so as to reproduce the music data with the sound quality according to the newly set sound quality data. On the other hand, in step S15,
After confirming that none of the songs are specified, the CP
U18 skips step S17 and skips step S17.
Proceed to 19. Then, after processing the step S19, the CPU 18 exits the sound quality setting mode shown in the flowchart of FIG. 8 and returns to the main routine.

As described above, according to the music reproducing apparatus 10 of this embodiment, a tune whose sound quality has been adjusted once can be heard with the same sound quality as that previously adjusted without having to adjust the sound quality again. Therefore, unlike the above-described conventional music reproducing apparatus, the troublesome work of manually adjusting the sound quality every time the genre or melody of the music to be listened changes can be omitted.

The sound quality data for setting the sound quality for each music is stored in a memory card 12 common to the music data of each music.
Therefore, for example, even when the memory card 12 is reproduced by another music reproducing device having the same configuration as that of the present embodiment, each tune can be heard with the same sound quality as previously set.

In the present embodiment, three patterns of sound quality [A], sound quality [B] and sound quality [C] are prepared for each genre as sound quality patterns. However, even more patterns are prepared. Good. Instead of selecting any of these sound quality patterns, the sound quality can be adjusted freely and in detail by the operator, and the adjusted sound quality data is recorded on the memory card 12 (play list file 128). You may be able to.

Although the memory card 12 is used as a medium for recording music data, the present invention is not limited to this. For example, another recording medium such as a magneto-optical disk or a magnetic tape may be used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a diagram conceptually showing a structure inside a memory card in the embodiment of FIG. 1;

FIG. 3 is a diagram conceptually showing the contents of a playlist file in FIG. 2;

FIG. 4 is a diagram showing an operation procedure and a display screen when reproducing music data of each song in the embodiment of FIG. 1;

FIG. 5 is a diagram showing an operation procedure and a display screen when setting sound quality for each music piece in the embodiment of FIG. 1;

FIG. 6 is a diagram showing a state after sound quality has been set by the operation of FIG. 5;

FIG. 7 is a flowchart showing the operation of the CPU for switching the sound quality for each music piece when reproducing the music data of each music piece in the embodiment of FIG. 1;

FIG. 8 is a flowchart showing the operation of the CPU when setting the sound quality for each song in the embodiment of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 ... Memory card 18 ... CPU 20 ... Operation key 22 ... DSP 24 ... Sound quality controller 36 ... EEPROM

Claims (5)

[Claims] 1. A music reproducing apparatus for reproducing a plurality of music signals recorded on a recording medium, wherein said adjusting means arbitrarily adjusts the sound quality of said music signal for each music, and adjusts an adjustment value by said adjusting means to said music signal. A music reproducing apparatus, comprising: a recording unit that records the music signal on the recording medium in association with the music signal; and a reproducing unit that reproduces the music signals with a sound quality according to the associated adjustment value. 2. An adjustment value storage means for storing a plurality of different adjustment values in advance, and a selection means for arbitrarily selecting any one of the plurality of adjustment values stored in the adjustment value storage means. 2. The music reproducing apparatus according to claim 1, further comprising: an adjustment executing unit configured to adjust a sound quality of the music signal according to the selected adjustment value. 3. The music reproducing apparatus according to claim 2, wherein said plurality of adjustment values are defined for each genre of said music. 4. The recording medium according to claim 1, wherein said recording medium is removable.
4. The music playback device according to any one of claims 3 to 3. 5. The apparatus according to claim 1, further comprising setting means for setting an adjustment value by said adjusting means as a default value, wherein said reproducing means, when said adjustment value is not associated with said audio signal, said sound with a sound quality according to said default value. The music reproducing device according to claim 1, which reproduces a signal.