JP2526033Y2 - Electronic musical instrument sampling sound tuning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sampling sound tuning apparatus for an electronic musical instrument.

[Prior Art and Problems] In a conventional sampling sound tuning apparatus, a key signal from a keyboard is processed as a sounding condition signal of a sampling sound and a reference sound (a sound generated as a reference in order to tune the sampling sound). Paired manual switches (up and down switches, commonly called value keys)
Is processed as a set frequency change signal of the sampled sound. Therefore, when any key on the keyboard is depressed, a sampling sound and a reference sound are generated. The user listens and compares the two sounds. If the sampled sound is lower, operate the up key to increase the frequency of the sampled sound, and if the sampled sound is higher, operate the down key to increase the frequency of the sampled sound. Try lowering. Finally, when the pitch (frequency) of the sampled sound matches the pitch (frequency) of the reference sound, the tuning operation is completed.

As described above, in the conventional sampling sound tuning device, it is necessary to raise and lower the pitch by pressing the tuning up and down value keys while playing the keyboard in order to perform tuning. However, there was a drawback that it took.

Furthermore, in an electronic musical instrument incorporating a conventional sampling sound tuning device, a volume control is provided for each of a sampling sound source and a reference sound source, and it is necessary to raise both of the volumes as preparation for tuning. .

[Purpose of the Invention] The present invention has been made in view of the above-described circumstances, and an object of the invention is to provide a sampling sound tuning apparatus for an electronic musical instrument that can perform sampling tuning with a simpler operation. is there.

According to the present invention, there is provided a sampling sound tuning device for an electronic musical instrument for tuning a reproduction frequency of a sampled sound (sampling sound) to a reproduction frequency of a sound (preset sound) preset in the electronic musical instrument. A performance operator that is operated to control sounding and mute when performing, a pair of switches that are operated without operating the performance operator, and a first switch for the pair of switches. Sounding control means for sounding both a sampling sound and a preset sound in response to a predetermined operation; and a sound response control means for responding to a second predetermined operation on the pair of switches during sounding of the sampling sound and the preset sound. Means for increasing a sampling pitch by a predetermined ratio to increase the reproduction frequency of the sampled sound; Means for lowering the reproduction frequency of the sampled sound by a predetermined ratio in response to a third predetermined operation on the pair of switches performed during the sounding of the sound. And a silencing control means for silencing a sampling sound and a preset sound in response to a fourth predetermined operation performed on the pair of switches. Is done.

In one configuration example, the first operation is an operation of pressing one of the pair of switches, the second operation is an operation of continuously pressing a first switch of the pair of switches, In response to this operation, the sampling pitch raising means increases the reproduction frequency of the sampling sound by a predetermined ratio at predetermined time intervals, and the third operation includes the first operation.
In response to this operation, the sampling pitch lowering means lowers the reproduction frequency of the sampling sound by a predetermined ratio every predetermined time, and Is an operation for opening the pair of switches to the off state. According to the present invention, it is possible to simultaneously listen to the sampling sound and the preset sound as the reference sound only by operating the switch (in the case of the above-described one configuration example, simply pressing any switch). Yes, there is no need to operate the keyboard or performance controls for tuning.
The user is freed from troublesome tuning operations.

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

FIG. 1 is an overall configuration diagram of an electronic musical instrument incorporating a sampling sound tuning apparatus of the present embodiment. The CPU 1 controls various input / output devices and memories by using programs in the program memory 2. The switch display unit 3 has various switch elements and display elements arranged on an operation panel (not shown) of the electronic musical instrument. The switch inputs are processed by the CPU 1, and various operation modes and musical sounds are displayed. The setting status and the like are displayed via the display element. In particular, as switches related to this embodiment, a value key 34 including an up key 31 and a down key 32 for tuning is included as shown in an enlarged manner in FIG. Reference numeral 4 denotes a keyboard (a keyboard which is a performance operator of an electronic keyboard instrument), and the CPU 1 controls a selected sound source to execute a key performance according to ON / OFF of a keyboard signal.

FIG. 1 shows a reference sound source 5 as a circuit for generating a reference sound signal at the time of tuning, and a sampling sound source 6 as a circuit for generating a sampled sound signal on the side to be tuned. In this example, the reference sound is RO
It is generated using one preset waveform data of the waveform data preset in M (not shown). On the other hand, the sampled sound is generated using waveform data sampled and recorded in a RAM (not shown). The sampling of the sampling sound is performed according to a known technique. In FIG. 1, a microphone 7, an amplifier 8 and an A / D
Digital waveform data of the sampled sound is obtained via the converter 9 and written into the RAM of the sampled sound source 6. The D / A converter 10, the amplifier 11, and the speaker 12 are musical tone output circuits, and perform D / A conversion, level conversion, and electric / acoustic conversion of tone signals given from the reference sound source 5 and the sampling sound source 6 during tuning. And make it sound outside.

According to this embodiment, there is no need to perform a key operation from the keyboard 4 at the time of tuning, and the sampling sound can be tuned to the reference sound only by operating the value key 34. To realize this function, the CPU 1 checks the signal from the value key 34 and selects one of the keys 31, 32.
Is detected, a sounding instruction is given to the reference sound source 5 and the sampling sound source 6, whereby the D /
Both the reference sound and the sampling sound are output through the A converter 10, the amplifier 11, and the speaker 12. That is, the present embodiment is characterized in that the start of pressing of the up key 31 or the down key 32 is used as the sounding condition of the reference sound and the sampling sound.

FIGS. 3 and 4 show flowcharts of a tuning process executed by the CPU 1 in order to implement other features in addition to the above features. In this flowchart, ↑ indicates the up key 31 and ↓ indicates the down key 32.
Represents Further, once a sound generation command is given from the CPU 1 to each of the sound sources 5, 6, each of the sound sources 5, 6 loops through each waveform memory and reads repeatedly unless a mute command is given. The output frequency of the sampling sound source 6 is controlled by frequency index information from the CPU 1.

Before starting the detailed description of FIG. 3 and FIG. 4, the outline is as follows: (a) When any one of the up key 31 and the down key 32 is turned on from the state where neither key is pressed Then, the sampling sound and the reference sound begin to sound.

(B) When one of the up key 31 and the down key 32 is in the ON state, the frequency (pitch) of the sampled sound is increased or decreased according to the duration of the state.

(C) When both the up key 31 and the down key 32 are on, the frequency of the sampled sound is not changed. Therefore, the user can compare the sampled sound with the reference sound at a fixed pitch.

(D) When both the up key 31 and the down key 32 are turned off, the sampling sound and the reference sound are muted.

(E) In order to satisfy the above operation (b), when only one of the keys 31, 32 is changed to the ON state (when one of the keys 31 and 32 is released, one of the keys is pressed). At this time, or when one of the keys is released from a state in which both keys 31 and 32 are pressed), an interval timer for giving a timing for changing the sampling frequency is started.

In more detail, the one-sided press start indicated by 303 in FIG. 3 changes from a state in which the up key 31 is released to a pressed state (YES in 301), and at that time, the down key 32 is released. If the down key 32 is in the pressed state (NO in 302) or changes from the released state to the pressed state (YE in 305).
S) and the case where the up key 31 is in a separated state at that time (NO in 306). When this condition holds, C
As shown in FIG. 4, PU1 resets and starts the interval timer (401), generates a sampling sound (402), and generates a reference sound (403).

Simultaneous pressing start indicated by 304 in FIG. 3 starts when the up key 31 is pressed while the down key 32 is pressed (in this case, YES in 301 and YES in 302).
Or, the down key 32 is pressed while the up key 31 is being pressed (YES in 305 → YES in 306). CP
When U1 detects this condition, it does nothing as shown in FIG. As will be understood from the description below, this means that the frequency of the sampled sound is fixed from this point.

The one-side-pressing start after the simultaneous pressing indicated by 309 in FIG. 3 is started when the up key 31 is released from the state where both keys 31 and 32 are pressed (YES in 307 to YE in 308).
S) or when the down key 32 is released from the state where both keys 31 and 32 are pressed (YES at 310 → YES at 311).
When this condition is detected, the CPU 1 resets and starts the interval timer in preparation for changing the frequency of the sampling sound (404 in FIG. 4).

Both are turned off as indicated by 312 in FIG. 3 because the down key 32 has already been released when the up key 31 is changed from the pressed state to the released state (YES at 307).
This is the case where the up key 31 is already released when the down key 32 is changed from the pressed state to the released state (YES at 310 → NO at 311). If this condition is detected, CPU1 mutes the sampled sound (40
5) The reference sound is also silenced (406 in FIG. 4).

Simultaneous depressing indicated by 315 in FIG. 3 is continued when both the up key 31 and the down key 32 are depressed (YES at 313 → YES at 314). As long as this condition is detected, the CPU 1 does nothing. This creates a state in which the reference sound and the sampled sound are sounding without changing the frequency of the sampled sound. In this mode, the user can hear and compare the pitches of the two sounds.

The reason why the one-sided press indicated by 317 in FIG. 3 is continued is when the down key 32 is kept away while the up key 31 is kept pressed (YES at 313 → NO at 31). ,
When the down key 32 is kept pressed while the up key 31 is kept away (NO from 313 to YES from 316)
It is. As long as this condition is detected, the CPU 1 resets and restarts the interval timer every time the interval timer elapses a predetermined time (YES in 407) as shown in FIG. The frequency of the sampled sound is switched (409). Although not explicitly shown in the figure, in the process of 409, it is determined whether the one-side pressing by the up key 31 or the one-side pressing by the down key 32 is continued by checking the on / off state flag of the up key 31. For the up key 31, the pitch of the sampled sound is increased by a predetermined amount (for example, 1 / half a semitone).
6, up about 17 cents) and lower by a predetermined amount for the up key 31. Here, it is sufficient that the entire range (span) of controlling the frequency of the sampled sound is limited to about one octave (if it is too wide, the sampled sound exceeds the range on the keyboard). Therefore, in this mode, if only the up key 31 is continuously pressed, the sampling sound is, for example, 17 octaves above the initial pitch before tuning, for example, every half a octave above the initial pitch.
On the contrary, if the down key 32 is kept pressed, the pitch is lowered by about 17 cents every predetermined time, with the lower limit being a half octave below the initial pitch.

Both of them remain off as indicated by 318 in FIG. 3 when the up key 31 is kept away and the down key 32 is kept away (NO at 313 → NO at 316). In this case, ,
Of course nothing.

In the above embodiment, the condition for changing the frequency of the sampled sound while the frequency of the reference sound is fixed is given by the duration of keeping one of the keys 31 and 32 of the value key 34 pressed. , Value key 34-2
Another condition obtained from the three keys 31 and 32 may be a condition for changing the frequency of the sampling sound (for example, the number of times of pressing).

Similarly, the condition for sounding the sampling sound together with the reference sound while the frequency of the sampling sound is fixed is that the simultaneous pressing of the up key 31 and the down key 32 is continued.
Other conditions that can be obtained from both keys 31, 32 may be employed.

[Effects of the Invention] As described above in detail, according to the invention, the reference sound 1 (preset sound) and the sampling sound to be tuned can be obtained simply by operating a pair of switches for setting the pitch of the sampling sound. Since it sounds at the same time, there is an advantage that tuning can be performed without playing the keyboard as in the past. Furthermore, it is sufficient that sampling can be performed and tuning is required, and the invention is not limited to electronic keyboard instruments.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of one embodiment of the present invention, FIG. 2 is a diagram showing a pair of switches for tuning, and FIGS.
FIG. 5 is a flowchart showing the operation of the embodiment. 1 ... CPU, 2 ... Program memory, 5 ... Reference sound source, 6 ... Sampling sound source, 31 ... Up key, 32 ...
... down key.

Claims (2)

(57) [Scope of request for utility model registration] 1. A sampling sound tuning device for an electronic musical instrument for tuning a reproduction frequency of a sampled sound (sampling sound) to a reproduction frequency of a sound (preset sound) preset in the electronic musical instrument. A performance operator operated to control sounding and silencing; a pair of switches operated without operating the performance operator; and a response to a first predetermined operation on the pair of switches. Sounding control means for generating both the sampled sound and the preset sound; and reproducing the sampled sound in response to a second predetermined operation performed on the pair of switches while the sampled sound and the preset sound are being generated. Sampling pitch raising means that raises the frequency by a predetermined ratio, and is performed during sampling sound and preset sound. Means for lowering the reproduction frequency of the sampled sound by a predetermined ratio in response to a third predetermined operation on the pair of switches; and A silencing control means for silencing a sampling sound and a preset sound in response to a fourth predetermined operation on a pair of switches, the sampling sound tuning apparatus for an electronic musical instrument. 2. A sampling sound tuning apparatus for an electronic musical instrument according to claim 1, wherein said first operation is an operation of pressing one of said pair of switches. The operation is an operation of continuously pressing the first switch of the pair of switches. In response to this operation, the sampling pitch increasing means changes the reproduction frequency of the sampling sound by a predetermined ratio at predetermined intervals. The third operation is an operation of continuously pressing the second switch of the pair of switches, and in response to this operation, the sampling pitch lowering means operates at a predetermined rate every predetermined time. The sampling sound tuning apparatus for an electronic musical instrument, wherein the fourth operation is an operation of opening the pair of switches to an off state. .