JP4037505B2 - Musical sound display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a musical tone display apparatus that displays information relating to stored musical tone waveform data.
[0002]
[Prior art]
In the so-called samplers that record music and perform various editing from the past, to help with editing, while playing the recorded music, the waveform of the music being played is displayed, and the current playback position is displayed there. To be done.
[0003]
[Problems to be solved by the invention]
As described above, it is considered that the recorded musical sounds are reproduced at a desired pitch or a desired reproduction speed.
However, as described above, even if the musical sound waveform is displayed while playing back the recorded musical sound, only the sensuous pitch heard by the ear can be known, and even if it is changed to the desired pitch, the pitch is only inaccurate. It cannot be changed.
[0004]
On the other hand, a technique for automatically detecting the pitch and pitch of a musical sound is also known. For example, it is conceivable to install the function in a sampler.
However, no effective proposal has been made as to how to transmit the pitch or pitch to the operator when the pitch or pitch is detected using the installed function.
[0005]
In view of the above circumstances, the present invention relates to a musical tone display apparatus that can effectively display the pitch and pitch of a musical tone.
[0006]
The first musical tone display device of the present invention that achieves the above object provides:
Storage means for storing waveform data representing a musical sound waveform;
Pitch detection means for detecting the pitch of each temporal portion of the musical sound waveform represented by the waveform data;
The musical sound waveform represented by the waveform data read from the storage means and the pitch detected by the pitch detection means are displayed on the same display screen in a display mode that indicates the correspondence between each part of the musical sound waveform and the pitch of each part. A musical sound display device comprising display means for displaying
A position specifying means for specifying a temporal position of the musical sound waveform displayed on the display means;
The display means displays the musical sound waveform and pitch, and a pitch name based on the pitch corresponding to the temporal position of the musical sound waveform designated by the position designation means;
The difference between the pitch and the standard pitch of the pitch name is displayed.
[0007]
Since the first musical tone display device of the present invention displays each part of the musical sound waveform in association with the pitch, the flow of the pitch can be grasped in association with the musical sound waveform.
[0008]
In this way, by specifying the position of the musical sound waveform and displaying the pitch at the specified position, even a beginner who is difficult to follow the pitch by hearing alone will track the change in the pitch of the musical sound. be able to.
Here, the first musical tone display device of the present invention is as follows.
The position specifying means allows to sequentially specify a plurality of temporal positions of a musical sound waveform displayed on the display means;
It is preferable that the display means displays the note name at the position designated last by the position designation means and the note name at the position designated this time in different display modes.
[0009]
This makes it easier to grasp the change in pitch.
In addition, automatic detection of pitch and pitch is not perfect, and is often erroneously detected by one octave. In such a case, it is easy to determine whether or not correct detection has been performed by comparing the auditory pitch with the displayed previous and current two pitches.
[0010]
The second musical tone display apparatus of the present invention is
Storage means for storing waveform data representing a musical sound waveform;
Pitch detection means for detecting the pitch of each temporal portion of the musical sound waveform represented by the waveform data;
A sound reproduction means for reading out waveform data from the storage means according to the passage of time and reproducing a music signal;
A pitch name based on the pitch of the tone waveform corresponding to the playback position of the tone playback means;
The display device further comprises display means for sequentially displaying a difference between the pitch and a standard pitch of the pitch names in accordance with the reproduction of the music sound reproduction means.
[0011]
Here, in the second musical sound display device, it is preferable that the display means displays the note name at the previous reproduction position and the note name at the current reproduction position in different display modes.
[0012]
Here, the “previous” during music playback may be, for example, the one at the time when the program for music playback or pitch display was last started, or at a certain time before the current time. Alternatively, when there is a change in pitch, the previous change may be set as the “previous”.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is an external configuration diagram of a computer system including elements of a musical tone display device of the present invention.
The computer system 10 includes a main body 11 incorporating a CPU, a RAM, a ROM, a memory such as a hard disk, a CRT display device 12 responsible for screen display, and a keyboard 13 for inputting operator instructions to the computer system 10. By designating an arbitrary position on the screen displayed on the display device 12, a mouse 14 for inputting an instruction corresponding to the position, a speaker 15 for reproducing a musical sound, and a recording of the musical sound A microphone 16 and the like are provided.
[0014]
FIG. 2 is an internal block diagram of the computer system 10 shown in FIG.
Here, a CPU 101, a ROM 102, a RAM 103, a hard disk 104, a D / A converter 105, an A / D converter 106, and a waveform memory (hard disk) 107 are provided connected to the bus 20. The waveform memory 107 may also serve as the hard disk 104, but is shown here as a separate block in order to clearly indicate the presence of the waveform memory. These are built in the main body 11 shown in FIG. In FIG. 2, the CRT display 12, the keyboard 13, and the mouse 14 shown in FIG. 1 are also shown as one block, and these are also connected to the bus 20. Furthermore, a speaker 15 is connected to the D / A converter 105 via an amplifier or the like (not shown), and a microphone 16 is connected to the A / D converter 106.
[0015]
In this embodiment, a musical sound waveform and various information related thereto are displayed on the CRT display device 12. Prior to the display, musical sounds are recorded by the microphone 16, and the recorded musical sounds are converted into A / D converters. It is converted into digital waveform data at 106 and stored in the waveform memory 107 via the bus 20. The process of recording a musical tone is well known and is not the subject of the present invention, so a detailed description of the process of recording a musical tone will be omitted. In the following, the display of the musical sound waveform, its associated pitch, pitch, etc. will be mainly described. explain.
[0016]
FIG. 3 is a diagram showing an example of a display screen displayed on the CRT display device 12 shown in FIGS. 1 and 2, and FIG. 4 is a diagram showing a memory area in the RAM 103 related to the processing flow described below. It is.
Hereinafter, the processing flow in the present embodiment will be described with reference to these drawings.
[0017]
FIG. 5 is a flowchart of a main routine related to display executed by the CPU 101.
First, an initial screen is displayed in step A_1. This initial screen is a screen excluding the musical sound waveform 31, pitch line 32, pitch mark 33, pitch and pitch display area 34 in the display screen shown in FIG.
[0018]
Next, in step A_2, a waveform data reading routine is executed, and the waveform data in the waveform memory 107 is stored in the waveform data area (see FIG. 4) in the RAM 103.
Next, a waveform data display routine is executed in step A_3, and the musical sound waveform 31 is displayed on the display screen as shown in FIG.
[0019]
In step A_4, a pitch detection routine is executed.
FIG. 6 is a flowchart of the pitch detection routine.
Here, first, the pitch of the musical sound waveform represented by the waveform data is detected from the waveform data (step B_1). In this pitch detection, the musical sound waveform is divided into a number of parts in the time axis direction (left and right direction in FIG. 3), and the pitch for each part is detected.
[0020]
The detected pitch of each part of the musical sound waveform is stored in the pitch data area (see FIG. 4) of the RAM 103 (step B_2).
In step A_5 of the main routine shown in FIG. 5, a pitch data display routine is executed.
FIG. 7 is a flowchart of the pitch data display routine.
[0021]
Here, the pitch of each part of the musical sound waveform detected as described above and stored in the pitch data area of the RAM is read (step C_1), and the read pitch data is displayed so as to overlap the musical sound waveform. (Step C_2), each part of the musical sound waveform is associated with the pitch of each part. In the case of the display mode shown in FIG. 3, the pitch data is displayed as pitch lines 32. The pitch line 32 has the same time axis as the musical sound waveform 31 and represents the pitch of each part of the musical sound waveform by the height in the vertical direction.
[0022]
Next, in step A_6 of the main routine shown in FIG. 5, a pitch name conversion table for converting pitches into pitch names, which represents the standard pitch of each pitch name and the range of pitches associated with each pitch name, is created. Are stored in the RAM 103 (see FIG. 4).
Next, in step A_7, it is monitored whether or not the mouse 14 is clicked. If there is a mouse click, the position of the mouse cursor when the mouse click is input is input (step A_8).
[0023]
A large number of icons are shown on the display screen shown in FIG. 3. Here, only items related to the characteristic part of the embodiment of the present invention will be described. Here, the mouse cursor displays a musical sound waveform. A case where the mouse is clicked while in the region 30 and a case where the play button 36 is clicked will be described.
In Step A_9, it is determined whether or not the play button 36 has been operated (clicked). Here, as described above, the play button 36 is clicked, or it is a click designating the position in the musical sound waveform display area 30, and when the play button 36 is not clicked, that is, in the musical sound waveform display area 30. If the position is designated, the process proceeds to step A_10.
[0024]
The position designation in the musical sound waveform display area 30 is valid only in the position in the time axis direction. In step A_10, a mark 35 is displayed at the designated position, and the designated position from the pitch data area shown in FIG. The pitch of the musical sound waveform portion is obtained, and the pitch data is passed to the pitch name display routine executed in step A_11.
FIG. 8 is a flowchart of the pitch name display routine.
[0025]
Here, first, in step D_1, the pitch mark 33a when the musical sound waveform display area 30 is clicked is changed from red to green as in the previous time, and then in step D_2, the pitch name conversion table (see FIG. 4) is changed. The pitch name is obtained from the pitch data corresponding to the musical tone waveform portion designated this time by reference, and in step D_3, the pitch mark 33b is added to the key corresponding to the pitch name on the keyboard in the display screen shown in FIG. Is displayed in red.
[0026]
Further, in step D_4, the difference between the pitch represented by the pitch data corresponding to the click position of the mouse and the standard pitch of the pitch name converted from the pitch is obtained. In step D_5, the pitch and pitch shown in FIG. In the difference display area 34, a pitch difference (here, -8.8 cent) between the pitch (here, C4) and the standard pitch of the pitch is displayed.
[0027]
If it is determined in step A_9 of the main routine shown in FIG. 5 that the play button 36 (see FIG. 3) has been clicked, the process proceeds to step A_12 and a performance state processing routine is executed.
FIG. 9 is a flowchart of the performance state processing routine.
Here, first, in step E_1, performance start processing is performed. In this performance start process, a timer interrupt is permitted to a performance routine (not shown) that is repeatedly activated by a timer interrupt. Then, the performance routine sequentially reads out the waveform data from the waveform data area shown in FIG. 4 in the RAM and sends it to the D / A converter 105. The D / A converter 105 converts the received waveform data into an analog waveform signal, and the waveform signal is sent to the speaker 15 via an amplifier (not shown) and the musical sound is output from the speaker 15 to the space.
[0028]
After the performance start process (E_1) shown in FIG. 9 is performed, the performance routine repeatedly operates until the musical sound waveform is output as a musical sound.
In step E_2 of the performance state processing routine shown in FIG. 9, a reproduction position pointer indicating the current musical sound reproduction position on the musical sound waveform is obtained from the performance routine. In step E_3, the obtained reproduction position pointer indicates the end of the waveform data. It is determined whether or not it is instructed, and if it is not the end of the waveform data, pitch data corresponding to the playback position pointer is obtained from the pitch data area shown in FIG. 3 (step E_4), and in step E_5, FIG. The pitch name display routine described with reference to this is executed.
[0029]
That is, in the performance state processing routine shown in FIG. 9, the display of the pitch mark 33 shown in FIG. 3 and the display contents in the pitch and pitch difference display area 34 shown in FIG.
Here, in the above embodiment, the pitch detected from the waveform data is displayed in the display format of the pitch line 32. However, the display format is not limited to this, and may be displayed in, for example, a bar graph display format. Even in other display formats, the pitch may be displayed in association with each part of the musical sound waveform.
[0030]
In the above embodiment, the pitch mark 33a representing the previous pitch and the pitch mark 33b representing the current pitch are distinguished from each other in green and red, but it is not necessary to distinguish between the colors. The format itself may be changed.
[0031]
【The invention's effect】
As described above, according to the present invention, a musical tone display apparatus that can easily grasp the pitch and pitch is realized.
[Brief description of the drawings]
FIG. 1 is an external configuration diagram of a computer system including elements of a musical tone display device of the present invention.
2 is an internal configuration diagram of the computer system shown in FIG. 1. FIG.
3 is a diagram showing an example of a display screen displayed on the CRT display device shown in FIGS. 1 and 2. FIG.
FIG. 4 is a diagram showing a memory area in a RAM.
FIG. 5 is a flowchart of a main routine.
FIG. 6 is a flowchart of a pitch detection routine.
FIG. 7 is a flowchart of a pitch data display routine.
FIG. 8 is a flowchart of a pitch name display routine.
FIG. 9 is a flowchart of a performance state processing routine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Computer system 11 Main-body part 12 'CRT display apparatus 13 Keyboard 14 Mouse 15 Speaker 16 Microphone 30 Musical sound form display area 31 Musical sound form 32 Pitch line 33 Pitch mark 34 Pitch and pitch display area 35 Mark 36 Play button 101 CPU
102 ROM
103 RAM
104 Hard disk 105 D / A converter 106 A / D converter 107 Waveform memory

Claims (2)

Storage means for storing waveform data representing a musical sound waveform;
Pitch detection means for detecting the pitch of each temporal portion of the musical sound waveform represented by the waveform data;
The musical sound waveform represented by the waveform data read from the storage means and the pitch detected by the pitch detection means are displayed on the same display screen in a display mode that indicates the correspondence between each part of the musical sound waveform and the pitch of each part. A musical sound display device comprising display means for displaying
A position specifying means for specifying a temporal position of the musical sound waveform displayed on the display means;
The display means displays the musical sound waveform and pitch, and a pitch name based on the pitch corresponding to the temporal position of the musical sound waveform designated by the position designation means;
Display the difference between the pitch and the standard pitch of the pitch name,
Further, the position specifying means allows to sequentially specify a plurality of temporal positions of the musical sound waveform displayed on the display means,
The musical tone display device, wherein the display means displays the note name at the position designated last by the position designation means and the note name at the position designated this time in different display modes. Storage means for storing waveform data representing a musical sound waveform;
Pitch detection means for detecting the pitch of each temporal portion of the musical sound waveform represented by the waveform data;
A musical tone display device comprising musical tone reproduction means for reading out waveform data from the storage means according to the passage of time and reproducing musical tone signals,
Display means for sequentially displaying a pitch name based on the pitch of the musical sound waveform corresponding to the playback position of the musical sound playback means and a difference between the pitch and a standard pitch of the pitch names according to playback of the musical sound playback means; Prepared,
A musical tone display device, wherein the display means displays a note name at the previous reproduction position and a note name at the current reproduction position in different display modes.

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