JP3290722B2 - Parameter setting device for delay device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parameter setting device for a delay device, and more particularly to a parameter setting device for a delay device capable of obtaining a plurality of delay signals having a relatively long delay time for one input. About.

[0002]

2. Description of the Related Art Hitherto, as an effect device for obtaining a delay signal of an input musical tone signal, a delay device called a so-called delay machine has been known, and is widely and generally used as a kind of effect device. .

Some of these delay machines can set a relatively long delay time in addition to those that set a short delay time such as early reflection in reverberation.

[0004] Among these delay machines,
As a delay machine that can set a relatively long delay time, a delay machine with a single output from the delay line of the delay machine (single delay)
And a delay machine having a tap output capable of outputting a plurality of delay signals having different delay times from a delay line, as disclosed in Japanese Patent Application Laid-Open No. 4-128896.

In a tap delay, when a delay signal is repeatedly output from a plurality of taps, a musical tone generated based on each delay signal is converted into a rhythm sound having a rhythm pattern determined by the delay time. And it will be possible to perform effectively.

FIG. 2 is a functional block diagram showing a known tap delay algorithm as described above. In FIG. 2, three tap outputs (tap 0, tap 1, and tap 2) shown as tap outputs are shown. Is shown with a tap delay 102. Tap 0 outputs a delay signal of delay time Dt0, and tap 1 outputs delay signal Dt.
The tap 2 outputs a delay signal of a delay time Dt2.

[0007] An input tone signal input from an input terminal 104 is input to a tap delay 102 via an amplifier 106, and from each tap (tap 0, tap 1 and tap 2), an input tone signal is delayed by a predetermined delay. Time (Dt0,
Dt1 and Dt2) are output. Among the tap outputs of the tap delay 102, the delayed signals output from the taps 1 and 2 are added to the adder 11 via the multipliers 108 and 110.
2 and is added to the delay signal output from the tap 0, and the output terminal 11
6 is output.

The delay signal output from the tap 0 is fed back via the amplifier 118, and is added to the input tone signal by the adder 120.

In such a conventionally known tap delay 102, at least three types of delay times Dt0, Dt1 and Dt2 are set as parameters for operating the tap delay 102, and the delay time desired by the setter is set. It can be set to time. For this reason, the tap delay 102 is provided with a parameter setting operator constituted by an up / down switch or the like in order to set the delay time of the tap delay as a parameter. By operating the operator and numerically inputting the delay time, three types of delay times Dt0, Dt1 and Dt2 are set as parameters.

Therefore, based on the numerical input operation of the parameter setting operator by the setter, the time intervals of Dt0, Dt1, and Dt2 set as the delay times of the three tap outputs, tap 0, tap 1, and tap 2, respectively. The musical tone is repeatedly generated with the rhythm pattern according to the above, and the musical tone is heard like a rhythm tone.

[0011]

However, the delay time as a parameter that is numerically input by the parameter setting operator is not a short delay time such as the initial reflection in reverberation, but is "one thousandth of a second". (Mse
c) The time is a unit of time, and is a short time that is extremely difficult to be intuitively grasped as a general life-level time interval. For this reason, it is extremely difficult to set the time interval of each delay time imaged by the setter by numerical input, and the parameter setting operation and the parameter setting until the time interval set by the setter can be set. It was necessary to repeat the test performance to confirm the setting state. Therefore, there is a problem that it takes a long time to set the delay time as a parameter.

That is, in general, the numerical value in the unit of “one thousandth of a second (msec)” has a low perception of the sense of how long the time interval is. Delay time as a parameter having
Setting by numerical input was an extremely difficult task. For this reason, there is a problem that a person who is not accustomed to handling the delay time correlation and the delay time unit (“one thousandth of a second (msec)”) cannot actually input a numerical value of the delay time. Was.

In the conventional tap delay, even if the delay time of each delay signal is once set as a parameter, when the tempo of the musical piece is changed, the delay time of all the delay times is once again set. There is a problem that the parameter setting operation is complicated because the parameter setting is required.

The present invention has been made in view of such various problems of the prior art, and an object of the present invention is to allow a setter to easily set a delay time according to an image. To provide a delay device parameter setting device that simplifies the operation of setting the delay time parameter and that does not require changing all the preset delay time parameters even when the tempo of the music piece is changed. What you want to do.

In order to achieve the above object, a parameter setting device for a delay device according to the present invention includes a reference delay time setting device, a periodic signal generating device, a timing input device, and a control device. A parameter setting device for setting a reference delay time and at least one delay time for a delay device capable of obtaining a delay signal of a reference delay time and a delay signal of at least one delay time, wherein the reference time delay setting means includes: The operator can set a desired reference delay time, the periodic signal generating means generates a periodic signal for notifying the operator, the timing input means can specify the timing by the operator, The means is based on associating the period with the reference delay time,
This is to determine the delay time corresponding to the timing position in the cycle. Further, the cycle of the periodic signal may be a reference delay time.

[0016]

The delay time as a parameter in the delay device is determined by specifying an arbitrary timing during the period of the periodic signal generated by the periodic signal generating means serving as a reference of the delay time by the timing input means. Will be able to do it.

Therefore, the setting of the parameter of the delay time is
Since the rhythm pattern can be set as a rhythm pattern during the period of the periodic signal, it is possible to make an extremely intuitive setting. Second (msec) ")
The parameter setting can be performed very easily even for a person who is not accustomed to handling.

Further, since the specification of the timing by the timing input means is specified in a series during the period of the periodic signal, the setting operation can be performed much more easily and quickly compared with the case where the parameters are input numerically one by one. Will be able to do it.

On the other hand, since the parameter of the delay time is set as the timing during the period of the periodic signal which is the reference of the delay time, even if the tempo of the music piece is changed, the delay time is adjusted in accordance with the change. As long as the reference delay time serving as the reference is changed, the rhythm pattern is not changed by designating the timing during the cycle. For this reason, even if the tempo of the music is changed,
There is no need to set all delay time parameters again.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a delay setting device according to the present invention;

FIG. 1 is a block diagram of a delay device provided with a delay device parameter setting device according to an embodiment of the present invention.

The delay device 10 controls the operation of the entire system and performs information processing in a timing setting mode, a reference delay time setting mode, and an operation mode, which will be described later.
It is configured to be controlled using a central processing unit (CPU) 12. This CPU 12 has a C
A read-only memory (ROM) 14 storing a predetermined program for controlling the operation of the PU 12,
A random access memory (RAM) 16 as a working area in which various registers required for execution of a program by the CPU 12 are set;
A digital signal processor (DSP) 18 for executing a function as a tap delay for obtaining a plurality of delay signals with different delay times for one input musical tone signal in accordance with parameters given by A mode selection switch 20 for switching between a reference delay time setting mode and an operation mode, and a timing input for operating a delay time parameter when the mode selection switch 20 is set to the timing setting mode. A delay time setting switch including a tapping switch 22 and an up / down switch for inputting a reference delay time when setting parameters when the mode selection switch 20 is set to the reference delay time setting mode. 24 and the delay time setting switch 24 A display unit 26 for displaying the delay time
And a timing setting metronome sound generator 28 for generating a metronome sound at a parameter setting basic cycle time serving as a reference when setting a delay time parameter by the timing input tapping switch 22. This timing setting metronome sound generator 2
A speaker 29 is connected to 8, and the metronome sound generated by the timing setting metronome sound generator 28 is emitted to the space via the speaker 29.

In this embodiment, the DSP 18 executes the function as the tap delay shown based on FIG. 2, and includes a tap 0 for outputting a delay signal of the delay time Dt0, and a delay of the delay time Dt1. A tap delay having three tap outputs of a tap 1 for outputting a signal and a tap 2 for outputting a delay signal with a delay time Dt2 is realized.

The RAM 16 stores a CPU based on the operation of a mode selection switch 20, a timing input tapping switch 22, and a delay time setting switch 24.
12 stores various coefficients for setting the delay time to be read out by the RAM 12.
The various coefficients read by the PU 12 are supplied to the DSP 18 and used to control the DSP 18.

A delay memory 30 is connected to the DSP 18, and a read address corresponding to a desired delay time is given to obtain a delayed musical tone signal. The DSP 18 is supplied with an analog / digital (A / D) converter 32. Input terminal 34
, An input tone signal is input. And DSP18
Executes a predetermined program on the input tone signal converted into a digital signal by the A / D converter 32 using the RAM 16 storing various coefficients for setting a delay time and the delay memory 30. Thus, a delay signal with a delay time Dt0 is output as tap 0, a delay signal with a delay time Dt1 is output as tap 1, and a delay signal with a delay time Dt2 is output as tap 2. The delay signal thus output is D / A converted by a digital / analog (D / A) converter 36 connected to the output side of the DSP 18, and is output from an output terminal 38.

Since the detailed configuration and operation of the tap delay executed by the DSP 18 are already known, the above description relating to FIG.
The detailed description will be omitted by citing 128896.

Next, the setting of the delay time as a parameter of the delay device 10 according to the present invention will be described.
In this delay device 10, the setter adjusts the rhythm pattern of the tap output imaged by the setter to the metronome sound having the basic cycle for parameter setting generated from the metronome sound generator 28 for timing setting. Tapping switch 22 for timing input by hand or foot
The time from when the metronome sound starts to when the timing input tapping switch 22 is tapped is set to the CPU 1 for each tapping.
2 measures and sets a delay time as a parameter based on the measurement result. Accordingly, if the tapping switch 22 for timing input is tapped with a rhythm pattern as set by the user without inputting a delay time as a parameter, a delay time for forming a rhythm pattern of tap output can be set. It will be able to do.

The above measurement result is stored as a parameter of a ratio of the metronome sound to the parameter setting basic period, so that the rhythm pattern of the tap output at the timing when the tapping switch 22 for timing input is tapped is stored. Can be reproduced at an arbitrary delay time.

That is, once the tap output rhythm pattern is set by tapping the timing input tapping switch 22, even when the tempo of the music to be played is changed, a plurality of delays for each tap are repeated. The rhythm pattern of the tap output set in advance at an arbitrary delay time can be reproduced only by changing the parameter of one reference delay time without setting the time parameter.

Therefore, parameters of n delay times required for tap delay of n (“n” is a positive integer) tap output can be set by setting one delay time. The change of the delay time parameter can be performed very quickly.

Hereinafter, referring to FIGS. 3 and 4,
The setting of the delay time as a parameter of the delay device 10 will be described in detail. FIG. 3 is a flowchart showing the operation of setting the delay time as a parameter of the delay device 10, and FIG. 4 is a timing chart of setting the delay time as a parameter.

First, in step S302, the mode is switched to the timing setting mode by operating the mode selection switch 20. When the process in step S302 ends, the process proceeds to step S304.

In step S304, the metronome sound generator 28 generates a metronome sound at the basic cycle time Mt0 for parameter setting, which is a reference when setting the parameter of the delay time by the tapping switch 22 for timing input. Will be.

Next, the process proceeds to step S306, where the timing input tapping operation is performed by hand or foot at the output timing of the imaged tap 1 and tap 2 rhythm patterns in accordance with the basic cycle time Mt0 for parameter setting of the metronome sound. Tap the switch 22 and input the timing. At this time, the tapping of the timing input tapping switch 22 is performed three times in succession in accordance with the basic cycle time Mt0 for parameter setting. The input of the timing according to 22 is ended.

The CPU 12 sets the time Dt1 [0] from the start time of the metronome sound generation at the basic cycle time Mt0 for each parameter setting to the timing designated by the tapping of the timing input tapping switch 22.
To Dt1 [2] and Dt2 [0] to Dt2 [2]
Are respectively measured and stored in the RAM 16.

Further, the CPU 12 sets Dt1 [0] to Dt1 [2] and Dt2
With respect to [0] to Dt2 [2], the average time for each of three times is calculated, and the calculation result and the ratio to the parameter setting basic cycle time Mt0 are calculated as ratio parameters Rdt1 and Rdt2 based on the following calculation formula. The value is stored in the RAM 16.

An arithmetic expression for calculating the ratio parameter is as follows: Rdt1 = {(Dt1 [0] + Dt1 [1] + Dt1 [2]) / 3} / Mt0 Rdt2 = {(Dt2 [0] + Dt2 [1] + Dt2 [2] ]) / 3｝ / Mt0.

The tapping of the timing input tapping switch 22 is performed three times in succession in accordance with the basic cycle time Mt0 for parameter setting, and the purpose of obtaining the average is to reduce the error in the tapping timing by the setter. This is to obtain parameters close to the image of the setter.

Upon completion of the process in step S306, the process proceeds to step S308.

In step S308, the mode selection switch 20 is operated to switch to the reference delay time setting mode. When the processing of step S308 is completed, step S308
Proceed to 310.

In step S310, the reference delay time setting switch 24 is operated to set an arbitrary delay time D for tap 0.
Enter t0. This delay time Dt0 is displayed on the display unit 26.

Based on the input of the delay time Dt0, the CPU 12 calculates the delay time parameters Dt1 and Dt2 of the taps 1 and 2, which are the tap outputs, based on an arithmetic expression Dt1 = Rdt1 × Dt0 Dt2 = Rdt2 × Dt0, The calculation result is stored in the RAM 16.

When the processing in step S310 ends, the flow advances to step S312.

In step S312, the mode selection switch 20 is switched to the operation mode, and the setting of the delay time as a parameter is completed.

In the operation mode, delay signals are output from tap 0, tap 1 and tap 2 according to the delay time caused by parameters Dt0, Dt1 and Dt2 stored in RAM 16.

Therefore, a delay signal is output according to the rhythm pattern at the timing designated by the tapping of the timing input tapping switch 22.

Also, once the parameters Dt1 and Dt2 are set, in the second and subsequent settings, step S3
By operating the reference delay time setting switch 24 at 10 and inputting an arbitrary delay time Dt0 of the tap 0, the ratio parameters Rtd1 and Rt
The ratio of the parameters Dt1 and Dt2 to the constant delay time Dt0 can be always realized by d2.

The above-described embodiment has the following modifications.

(1) In step S304, a parameter setting basic cycle time Mt0, which is generated by the timing setting metronome sound generator 28 and serves as a reference when setting the delay time parameter by the timing input tapping switch 22. Is set to the same value as the delay time Dt0, it is possible to input the timing by tapping of the timing input tapping switch 22 in real time.

For example, the parameter setting basic cycle time M
An arithmetic expression for calculating the ratio parameters Rdt1 and Rdt2 when t0 is the same value as the delay time Dt0 is as follows: Rdt1 = {(Dt1 [0] + Dt1 [1] + Dt1 [2]) / 3} / Dt0 Rdt2 = ｄ (Dt2 [0] + Dt2 [1] + Dt2 [2]) / 3 / Dt0.

(2) In step S306, the tapping of the timing input tapping switch 22 is performed three times in succession in accordance with the parameter setting basic cycle time Mt0. However, the present invention is not limited to this. Tapping may be performed, or tapping may be continuously performed four times or more, and an average thereof may be obtained.

(3) In the above embodiment, the delay
Although the output of the line has been described as monaural, the output may be stereo. For example, two timing input tapping switches 22 may be provided so as to correspond to the left channel and the right channel, respectively.

(4) By configuring the timing input tapping switch 22 so as to detect the striking strength, for example, as in the case of an electronic percussion instrument, the operation of the timing input tapping switch 22 causes a delay. The delay time of the signal can be set, and the coefficient for determining the output level of the delay signal can be set. That is, the tapping switch 22 for timing input
The RAM 16 storing the coefficients for determining the output level is read out according to the tapping strength, and the read coefficients for determining the output level are the tap outputs tap 1 and tap 2
, And output levels are set.

[0054]

Since the present invention is configured as described above, it has the following effects.

In a parameter setting device of a delay device having at least two delay output means capable of obtaining a delay signal of a first delay time and a delay signal of a second delay time for one tone input, Delay time setting means for setting a first delay time as a parameter; periodic signal generating means for generating a periodic signal at a cycle of the first delay time set in the delay time setting means; Timing input means for designating any timing during the period of the generated periodic signal;
Based on the measurement result obtained by measuring the timing specified by the timing input means in relation to the cycle of the periodic signal generated by the periodic signal generating means, a second delay time shorter than the first delay time is used as a parameter. Control means for setting the delay time as a parameter in the delay device, the timing input means to set an arbitrary timing during the period of the periodic signal generated by the periodic signal generation means as a reference of the delay time. By specifying, it can be determined.

For this reason, the parameter setting of the delay time can be set as a rhythm pattern during the period of the periodic signal, so that an extremely intuitive setting is possible. And the unit of delay time (“one thousandth of a second (mse
c) Even for a person who is not accustomed to handling ")", the parameter setting can be performed very easily.

Since the specification of the timing by the timing input means is specified in series during the period of the periodic signal, the setting operation can be performed much more easily and quickly compared with the case where the parameters are input numerically one by one. Will be able to do it.

Further, since the parameter of the delay time is set as the timing during the period of the periodic signal as a reference of the delay time, even if the tempo of the music piece is changed, the delay time is adjusted in accordance with the change. As long as the reference delay time serving as the reference is changed, the rhythm pattern is not changed by designating the timing during the cycle. For this reason, even if the tempo of the music is changed,
There is no need to set all delay time parameters again.

Therefore, according to the present invention, it is possible to easily set the delay time as imagined, simplify the operation of setting the parameter of the delay time, and even if the tempo of the musical composition is changed, This eliminates the need to change all the parameters of the set delay time.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a delay device including a parameter setting device of the delay device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of a tap delay.

FIG. 3 is a flowchart showing an operation of setting a delay time as a parameter of the delay device.

FIG. 4 is a timing chart showing a timing of setting a delay time as a parameter of the delay device.

[Explanation of symbols]

 Reference Signs List 10 delay device 12 CPU 14 ROM 16 RAM 18 DSP 20 mode selection switch 22 tapping switch for timing input 24 reference delay time setting switch 26 display unit 28 timing setting metronome sound generator 28 30 delay memory 32 A / D converter 34 input terminal 36 D / A converter 38 output terminal 102 tap delay 108 multiplier 110 multiplier

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G10K 15/12 G10H 1/00 G10H 1/10 G10H 1/40

Claims (2)

(57) [Claims] A reference delay time setting unit, a periodic signal generation unit, a timing input unit, and a control unit;
A parameter setting device for setting a reference delay time and at least one delay time for a delay device capable of obtaining a delay signal of a reference delay time and a delay signal of at least one delay time for one tone input. The reference time delay setting means allows the operator to set a desired reference delay time, the periodic signal generating means generates a periodic signal for notifying the operator, and the timing input means sets the timing by the operator. The parameter setting device determines the delay time corresponding to the timing position in the cycle based on associating the cycle with the reference delay time. 2. The parameter setting device according to claim 1, wherein the period of the periodic signal is a reference delay time.