JPS6022400Y2 - electric guitar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circuit arrangement for clarifying melody and bass sounds in an electric guitar.

In an electric guitar that produces a damped sound, if the electrical signal converted from the string vibration caused by plucked strings is always given priority to be output from the string vibration of the string that is plucked later, melody sounds and bass sounds can be reproduced. becomes clear, and a favorable effect on performance can be obtained.

The present invention provides an electric guitar in which the above-mentioned clear melody tone and bass tone can be obtained arbitrarily.

The present invention will be described in detail below with reference to the drawings.

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

P1 to P6 are signal converters that convert string vibrations caused by plucked strings into electrical signals, and they correspond in the order of P1 to P6 from high-pitched strings to low-pitched strings.

The electric signals S1 to S6, which have been sequentially converted from the string vibrations by the signal converters P1 to P6 due to the string being plucked, are respectively input to the respective gate circuits 61 to G6 of the first gate circuit group GA, and are also input to the plucked string detectors. Each detection signal that is also input to each of the detectors DTl to DT6 of the group and sequentially output from each of the detectors DTl to DT6 is sent to the first signal priority selection circuit pA, and is prioritized in the signal priority selection circuit &SSA. The selected detection signal is applied to the first gate circuit group GA as a gate signal of the gate circuit group.

Now, regarding the signal priority selection circuit, a specific embodiment of the first signal priority selection circuit A will be described with reference to the circuit diagram of FIG.

゛An electric signal S1 converted by a signal converter P1 due to string vibration caused by plucked strings is input to a plucked string detector DTl, and a detection signal obtained from the output side of the detector DT1 is sent to flip-flop circuits F, F. is input.

In this case, the state of the output side points at by ct dt et f of the flip-flop circuits F and F is as follows if you look at the column ■ in the truth value diagram of Figure 3, and the three points d and e are 1 and 1, respectively. Therefore, 3
It is only in the NAND circuit NAl that all of the input signals become 1, and only the output signal of this circuit NAl becomes 0, turning on the transistor Q1 and applying a positive voltage to the collector of the transistor Q1.

Therefore, the diode D1 is reversely biased and turned off, and the FET gate circuit G1 is opened, and only the signal S1 applied to the drain of the gate circuit G1 is gated and output from the output terminal 01.

Next, for example, when the electric signal S4 converted by the signal converter P4 is input to the plucked string detector DT4, and the detection signal obtained from the output side of the detector TD4 is input to the flip-flop circuits F, F, a previously determined by signal S1
” The state of each point f changes to the state in column ■ in Figure 3, and a
, ci.

Each of the three points of f becomes ■, and as above, a NAND circuit N
Only the output signal of A4 becomes 0, and the FET gate circuit G
4 is opened and only signal S4 is gated to output terminal 01.
It is output from

In this manner, the signal priority selection circuit SA always selects only the electrical signal converted from the string vibrations plucked later and outputs it from the output terminal 01.

A specific example of the plucked string detector will be explained using the circuit diagram shown in FIG.
Point a on the output side of inverter 2 is at low level, and point b on the output side of inverter 2 is at bilevel.
and capacitor C, the input terminal 3-2 of the NOR circuit 3 becomes bi-level with a moment delay from the other input terminals 3-1. Input terminals 3-1 and 3-2 are both at low level, point C on the output side of NOR circuit 3 is at bi-level, and output terminal O outputs a plucked string detection signal.

Thus, the electrical signals 81 to S6 are gated by the first gate circuit group GA in the order in which the strings are played, and are sequentially output from the output terminal 01.

Therefore, for example, when a melody is played, the signal converters PI, P5, P3... P2. P4. In the order of P6, the string vibrations are electrical signals Sl, S5. S3. S2. S4. When converted to S6, the first gate circuit group GA includes a plucked string detector DTl.
, DT5. DT3. DT2. DT4. Each detection signal of the DT5 is sequentially applied as a gate signal to the gate circuit Gl,
G5. G3. G2. G4. The gate opens in G6's order,
Sl from output terminal 01.

S5. S3. S2. S4. An electrical signal that clearly expresses the melody is output in the order of S6.

Also, plucked string detector DT4. DT5. Since each detection signal of DT6 is sent to the first signal priority selection circuit SA and simultaneously sent to the second signal priority selection circuit βB, the detection signals of each of the detectors DT4. DT5
．． A signal that is input later than each detection signal of DT6 is always selected with priority, and the gate is sent to the second gate circuit group CB connected to the signal converter corresponding to the detector that outputs the selected detection signal. Applied as a group gate signal.

As a result, the second gate circuit G'4°G'5. G'6
Each input signal S4. S5. The signals S6 are gated in the order in which the strings are played, are sequentially input to the branch divider DV, and are sequentially outputted from the output terminal 02 after being frequency-downgraded.

Therefore, signal converter P4. When the three strings corresponding to P5 and P6 are used for bass performance, an electrical signal that clearly expresses the bass sound is output from the output terminal 02 in the order in which the strings are plucked.

As mentioned above, the melody can be clearly expressed from the output terminal 01, and the bass sound can be clearly expressed from the output terminal 02. Therefore, if both electrical signals are amplified and emitted from the speakers, the melody can be heard. This is an electric guitar that can be used to play bass as well as bass.

Another embodiment of the present invention is shown in a circuit block diagram in FIG. 5 and will be described. Each output terminal of DT5 and DT6 is connected to a changeover switch sw4. sw5. s
Connected to each movable contact S4c, S5c, S6c of w6,
Each fixed contact of each of the above changeover switches S4 at S5 a
tS6a is connected to the first signal priority selection circuit SA, and each fixed contact S4b.

S5b and S6b are connected to a second signal priority selection circuit B.

Now, the movable contact of each changeover switch is connected to each fixed contact S.
4a, S5a, and S6a, all the plucked string detection signals of the plucked string detectors DTi to DT6 are connected to the gate signals of the first gate circuit group GA through the first signal priority selection circuit SA. Therefore, the electrical signals converted by the signal converters P1 to P6 are obtained from the output terminal 01 in the order in which the strings are plucked.

That is, only electrical signals that clearly express the melody of the six strings corresponding to the signal converters P1 to P6 are obtained.

Next, the movable contact of each changeover switch is connected to each fixed contact S.
4b, S5b, and S6b, the plucked string detector DT4. DT5. Since the plucked string detection signal of DT5 becomes the gate signal of the second gate circuit group GB through only the second signal priority selection circuit SB, each signal converter PI, P2 . The electrical signal converted by P3 is sent from the output terminal 01 to each signal converter P4. The electrical signals converted at P5 and P6 are frequency-downgraded through the divider DV and then obtained from the output terminal 02 in the order in which the strings are plucked.

Therefore, the electric signals Sl, S2 . S3, and electric signals S4, S5 . Since the frequency-downgraded version of S6 is obtained independently in the plucking order, the melody performance using the high-pitched strings and the bass performance using the low-pitched strings can be performed separately and simultaneously.

In the above example, the number of changeover switches is three, but by limiting the switch to two, SW5 and SW6, the melody can be played on the 4 strings of the treble section, and the bass can be played on the 2 strings of the bass section.

Note that the first gate circuit group G obtained from the output terminal 01
The output electrical signal of A and the output electrical signal of the second gate circuit group GB obtained from the output terminal 02 without passing through the frequency divider DV are frequency-downgraded or frequency-voltage converted, respectively, and then the pressure-controlled oscillator is controlled. Needless to say, it is possible to convert this into an electrical signal that provides a wider variety of melodic tones and bass tones.

As described above, when playing the electric guitar according to the present invention, an electric signal is always obtained from the vibration of the strings plucked afterwards, so it is possible to obtain clear scale tones, and also to play the melody.
It is an electric guitar that can be played in a new way that has never been seen before, as it can be played by selectively using the strings for bass and guitar.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing one embodiment of the present invention. P1~P6...Signal converter, DT1~DT6・
... String plucked detector, SA, SB ... Signal priority selection circuit, GA, GB ... Gate circuit group, 61 to G6. G'4 to G'6... Gate circuit, DV... Frequency divider, 01,02... Output terminal, S1 to S6... Electric signal . Fig. 2 is a circuit diagram showing a specific example of the signal priority selection circuit 1 pA, Fig. 3 is a truth value chart for explaining the circuit operation of Fig. 2, and Fig. 4 is a concrete example of the plucked string detector. FIG. 5 is a circuit block diagram showing another embodiment of the present invention. P1 to P6. Sl-S6. DTI~DT6゜SA, S
B, GA, GB, Gl~G6. G'4~G'6
゜DV, 01.02. ...Same as Figure 1. F, F,...Flip-flop circuit, a~f・
... Points on the output side of F, F, NA1 to NA6...
...NAND circuit, Q1-Q6...transistor, D1-D6...diode. ■・・・Input terminal, 0・・・Output terminal, 1
, 2... Inverter, a, b, c...
Point in the circuit, R...Resistor, D...Diode, C...Capacitor, 3...Nor circuit, 3-1.3-2. ...Input terminal, sw4
．． sw5. sw6......Choice switch, 54at
S5a* S6a, S4b, 55bt S6b"
”...Fixed contacts, S4c, S5c, S6c...
・Movable contact.

Claims (2)

[Scope of utility model registration request] (1) A first gate circuit group comprising a signal converter that independently converts the vibration of each string into an electric signal for each string, and the signal output terminal of each signal converter is composed of an independent gate circuit. and each input terminal of a group of plucked string detectors which are also connected to each input terminal of a group of plucked string detectors that are also independent of each other,
Each output terminal of the plucked string detector group is connected to each signal converter corresponding to each plucked string detector via a first signal priority selection circuit common to the plucked string detection lid group. are connected to the gate signal input terminals of each gate circuit of the gate circuit group, and each output terminal of a specific plurality of plucked string detectors in the plucked string detector group is common to the specific plurality of plucked string detection lid groups. also connected to the gate signal input terminal of each gate circuit of the second gate circuit group connected to each signal converter corresponding to each specific plucked string detector via the second signal priority selection circuit of death,
A plucked string detection signal is transmitted from each output side of the first gate circuit group and the second gate circuit group, which is preferentially selected by the first signal priority selection circuit and the second signal priority selection circuit due to the plucking of the string. Interlockingly, the electric signals of the strings plucked later are always taken out at the same time, thereby generating an independent electric signal for each string and a specific plurality of strings corresponding to the specific plurality of plucked string detectors. An electric guitar characterized in that each independent electric signal is obtained for each string plucked in the order in which the strings are plucked. (2) The electricity according to claim 1 of the utility model registration claim, wherein either the first or second signal priority selection circuit is selected as a path for plucked string detection signals from a plurality of specific plucked string detectors. guitar.