JPS5836B2 - Sound effect device for electric string instruments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blind motion device for electric pianos and other electric string instruments.

In a natural musical instrument, such as a piano, when you remove the damper from each string and hit the strings, the strings vibrate and the vibrations are transmitted to the other strings via the soundboard, which causes the soundboard to vibrate again. is repeated, creating a kind of reverberation effect.

However, electric stringed instruments do not have a soundboard, so even when the damper is released, there is no reverb effect.

In particular, in the case of a type in which each string is equipped with a separate pickup, since each string is independent, there is no reverb effect at all, resulting in a musical sound that is different from natural musical instrument sounds.

The present invention aims to generate such an effect electrically to obtain a sound closer to that of a natural stringed instrument, and includes a plurality of dampers connected to and separated from a plurality of strings by the operation of a damper operator. In a type in which a pickup that detects the vibration of each string is connected to a speaker via an amplifier, all dampers are separated from the strings when the damper operator is operated, and the output from the reverb unit is connected to the pickup. It is characterized in that it is added to a circuit that connects to a speaker.

Next, embodiments of the present invention will be described with reference to the attached drawings.

In Fig. 1, 1 indicates a string stretched on a frame 2;
A pickup 3 is interposed between the berth 1 and the frame 2.

Reference numeral 4 indicates a damper, and 5 indicates a damper pedal as a damper operator. The damper 4 and the damper pedal 5 are connected via a conventionally known damper mechanism 6.

A changeover switch 7 is provided at the bottom of the support rod 5a of the damper pedal 5, which is switched as the damper pedal is depressed.

FIG. 2 shows an electric circuit in which the pickup 3 is connected to one fixed contact 7a of the changeover switch 7 via a preamplifier 8, a filter 9, and two resistors 10 and 11 connected in series. The connection point 10.11 was connected to the other fixed contact 7b.

Then, the output terminal of the filter 9 is connected to the reverb unit 12.
, the other fixed contact 7b via series resistors 13 and 14.
The connection point between both resistors 13 and 14 was connected to the one fixed contact 7a.

Furthermore, both eye contact points 7a and 7b were grounded through resistors 15 and 16, respectively.

The movable contact 7C was connected to a speaker 18 via an amplifier 17.

Thus, in the illustrated state in which the damper pedal 5 is not depressed, the movable contact 7C of the changeover switch 7 is connected to the fixed contact 7b.

Now, when the string 1 is struck, some of the musical sound signal to which the reverb effect has been added is mixed with the musical sound signal that does not pass through the reverb unit 12, and a sound similar to the original piano sound produced by the damper 14 is obtained.

Next, when damper pedal 5 is depressed, all dampers have a cosine of 1
As the switch moves away from the switch 1, the movable contact 7C of the changeover switch 1 is switched to the fixed contact 7a, and a large amount of musical sound signal that has been struck by the string 1, passed through the reverb unit 12, and has been given a reverb effect is mixed into a music sound signal that has no reverb effect added. As a result, a musical sound that is very close to the original piano sound with a large reverb effect without the effect of the damper 4 can be obtained.

In the above, the signals passing through the reverb unit 12 and the signals not passing through the reverb unit 12 are simultaneously adjusted depending on whether the damper 4 acts or not. .22 may be set in advance, and only the mix amount of the signal that has passed through the reverb unit 12 may be switched to the signal that does not pass through the reverb unit 12.

Also, when the damper 4 is activated, some of the signal that passes through it is mixed with the signal that does not pass through the reverb unit 12, but this does not need to be added, but it is more effective if it is added. be.

It should be noted that the electric piano is not limited to one using strings as described above, but can of course also be applied to one using, for example, a rod-shaped tone piece in place of strings.

Further, the reverb unit 12 is not limited to an electric piano, but may be an electric stringed instrument such as a steel guitar, and the reverb unit 12 is not limited to a mechanical one, but may be an electronic one using a BBD, for example.

In this way, according to the present invention, when the damper operator is operated, the reverb unit is added to the circuit that connects the pickup to the speaker, so that when the damper is released on a natural stringed instrument, the reverb effect is added. This has the effect of obtaining a musical tone that is more similar to the musical tone of .

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is a circuit diagram, and FIG. 3 is a circuit diagram of another embodiment. 1...Strings, 3...Pickup, 4.
...damper, 5...damper operator,
12... Reverb unit, 17...
Amplifier, 18...Speaker.

Claims (1)

[Claims] 1. In a type that includes a plurality of dampers that are moved into and out of contact with a plurality of strings by operating a damper operator, and a pickup that detects the vibration of each of these strings is connected to a speaker via an amplifier, when the damper is operated, the 1. A blind dynamic device for an electric stringed instrument, characterized in that all dampers are separated from the strings, and an output from a reverb unit is added to a circuit connecting the pickup to a speaker.