A kind of mellotron
Technical field
The present invention program relates to a kind of mellotron.
Background technology
Mellotron has long history as musical instrument a kind of in musical performance, its cardinal principle be key by one with its one to one on-off circuit the push action of key is reached pronunciation device, pronunciation device sends one and is pressed the corresponding musical sound of key with this, pronunciation device constantly develops till now from the appearance of mellotron, there is multiple technologies scheme, as used PCM or AWM sampling sound source, so-called sampling sound source is exactly the sound recording musical instrument, by after its digitizing stored in ROM, this sound of CPU playback when then pressing key, adopt the on-off circuit of the mellotron of this pronunciation device mainly in order to the positional information being pressed key is inputted CPU, and for example use FM synthetic video, oscillator is used to carry out analog instruments tone color, adopt the on-off circuit of the mellotron of this pronunciation device mainly in order to activate the electric installation work corresponding with being pressed key, but no matter adopt that mode, the key of mellotron is exactly in fact a pushbutton switch, namely each key is all provided with corresponding on-off circuit and reaches pronunciation device with the push action key, but there is a common limitation in these prior arts: because key ratio refers to position thick and key and scale one_to_one corresponding, constantly keyboard must be lengthened when keyboard is set up scale, but the both hands of player are taken into account and are limited in scope, the scale of mellotron is arranged can not be too much overstocked.
Summary of the invention
The technical matters that the present invention program will solve is the present situation for prior art, and provide a kind of simple and reasonable, play facility, scale arranges many and close a kind of mellotron.
The technical scheme that the present invention program solves the problem is: a kind of mellotron, comprise pronunciation device, keyboard, be arranged at the some keys on keyboard, with key on-off circuit one to one, key is associated with pronunciation device by the on-off circuit corresponding with it, when key is pressed, the on-off circuit of its correspondence is switched on thus makes pronunciation device send a musical sound, discuss for keyboard dextrad with player's right hand position, more the keep right scale of musical sound of its correspondence of key is higher, key than conventional tiny to such an extent as to one refer to potential energy pressing at least two continuous print keys; Arbitrary key is associated except an on-off circuit key adjacent with its dextrad of its correspondence except the key of keeping right most, and be specially when the adjacent key of its dextrad is pressed, the on-off circuit that this key is corresponding remains on non-conducting state.The mellotron of the present invention program touches when playing and presses one group of continuous print key in a finger position of operator, because arbitrary key on-off circuit that this key is corresponding when the adjacent key of its dextrad is pressed remains on non-conducting state, at this moment one group of continuous print key only has on-off circuit corresponding to its rightest key to be in on-state, and pronunciation device only sends the musical sound of the rightest key of a representative; Be with one group of the rightest key of continuous print key for benchmark by the musical sound sent when playing as can be seen here, and then to be inferred as musical sound be changed to benchmark with a key mapping, key than conventional tiny to such an extent as to one refer to potential energy pressing at least two continuous print keys; Under the prerequisite that keyboard length is certain, the number of elements of key rolls up, thus make with key one to one scale more horn of plenty is set.
Preferably, on-off circuit comprises a circuit fracture, electric contact point, and electric contact point is arranged on key, and circuit fracture is arranged at below key, and when key is pressed, electric contact point connects circuit fracture, and circuit fracture two ends are respectively drawn a wire and are associated with pronunciation device, the mode that an on-off circuit key adjacent with its dextrad is associated be select a circuit fracture one end wire and this wire is cut off, this wire is at cut-off part self-assembling formation breakpoint one and breakpoint two, breakpoint one is by connection electric shock point one, breakpoint two is by connection electric shock point two, the point one that gets an electric shock is arranged on the adjacent key of dextrad, the point two that gets an electric shock is arranged on the keyboard of the adjacent key side of dextrad, the point one that gets an electric shock when the adjacent key of dextrad is not pressed contacts with each other to form conduction with the point two that gets an electric shock, the point one that gets an electric shock when the adjacent key of dextrad is pressed is separated from each other with the point two that gets an electric shock.The key of the technical program mellotron is when being pressed when the adjacent key of its dextrad, the point one that gets an electric shock is separated from each other with the point two that gets an electric shock, formation breakpoint one and breakpoint two are not switched on, the on-off circuit that this key is corresponding is maintained at non-conducting state, and whether this key is pressed all can not form input to pronunciation device.
Preferably, on-off circuit comprises one first conducting strip, second conducting strip, first conducting strip is arranged on key, second conducting strip is arranged at below key, when key is pressed, the first conducting strip touches the second conducting strip and connects to make on-off circuit, and the first conducting strip and the second conducting strip are respectively drawn a circuit and be associated with pronunciation device, the mode that a described on-off circuit key adjacent with its dextrad is associated is that the circuit of drawing at the second conducting strip is provided with an electromagnetic switch, electromagnetic switch has a corresponding working power, the connection line of electromagnetic switch and working power is provided with the 3rd conducting strip and the 4th conducting strip, when 3rd conducting strip and the 4th conducting strip touch, electromagnetic switch connection working power makes electromagnetic switch be in off-state, when 3rd conducting strip and the 4th conducting strip do not touch, electromagnetic switch access failure working power makes electromagnetic switch close and is in on-state, 3rd conducting strip is arranged on the adjacent key of dextrad, 4th conducting strip is arranged on the keyboard of the adjacent key side of dextrad, when the adjacent key of dextrad is pressed, the 3rd conducting strip and the 4th conducting strip touch mutually.The electromagnetic switch of the technical program is the power-actuated switch of electromagnetism, electromagnetic switch is in normal conjunction state in the ordinary course of things, namely on-state is kept, but once electromagnetic switch connects working power, two switch plates of electromagnetic switch are separated from each other and make electromagnetic switch be in off-state under electromagnetic force drives, the key of the technical program is when the adjacent key of its dextrad is pressed, the electromagnetic switch of the on-off circuit that this key is corresponding disconnects, remain on non-conducting state, whether this key is pressed all can not form input to pronunciation device.
Certainly, on-off circuit and a key adjacent with dextrad thereof associate multiple technologies scheme in addition, use different line connections all can realize with the different electronic component of employing, do not repeat one by one here.
Further technology, is provided with some standard scales mark, sends the scale of musical sound when arbitrary standard scale label table shows and plays one group of continuous key immediately below it above key.This is provided with and is beneficial to beginner and finds the scale wanting to play easily.
Compared with prior art, the present invention program is a kind of mellotron, comprise pronunciation device, keyboard, be arranged at the some keys on keyboard, with key on-off circuit one to one, key is associated with pronunciation device by the on-off circuit corresponding with it, when key is pressed, the on-off circuit of its correspondence is switched on thus makes pronunciation device send a musical sound, discuss for keyboard dextrad with player's right hand position, more the keep right scale of musical sound of its correspondence of key is higher, key than conventional tiny to such an extent as to one refer to potential energy pressing at least two continuous print keys; Arbitrary key is associated except an on-off circuit key adjacent with its dextrad of its correspondence except the key of keeping right most, and be specially when the adjacent key of its dextrad is pressed, the on-off circuit that this key is corresponding remains on non-conducting state.The present invention program has the following advantages: advantages of simple, plays facility, and scale arranges many and close, plays bent wind fine and smooth.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the mode that the on-off circuit of the embodiment of the present invention 1 and a key adjacent with dextrad thereof are associated;
Fig. 3 is the one-piece construction schematic diagram of the embodiment of the present invention 2;
Fig. 4 is the mode that the on-off circuit of the embodiment of the present invention 2 and a key adjacent with dextrad thereof are associated;
Fig. 5 is the one-piece construction schematic diagram of the embodiment of the present invention 3;
Fig. 6 is the mode that the on-off circuit of the embodiment of the present invention 3 and a key adjacent with dextrad thereof are associated.
Embodiment
Below in conjunction with embodiment, the present invention program is described in further detail:
Embodiment 1
A kind of mellotron, comprise pronunciation device 1, keyboard 2, be arranged at the some keys 3 on keyboard 2, with key 3 on-off circuit H one to one, key 3 is associated with pronunciation device 1 by the on-off circuit corresponding with it, when key 3 is pressed, the on-off circuit of its correspondence is switched on thus makes pronunciation device 1 send a musical sound, discuss for keyboard 2 dextrad with player's right hand position, more the keep right scale of musical sound of its correspondence of key 3 is higher, key 3 than conventional tiny to such an extent as to one refer to potential energy pressing at least two continuous print keys 3; Arbitrary key 3 is associated except an on-off circuit key 3 adjacent with its dextrad of its correspondence except a key 3 of keeping right most, and be specially when the adjacent key 3 of its dextrad is pressed, the on-off circuit of this key 3 correspondence remains on non-conducting state.
Wherein, on-off circuit comprises a circuit fracture K1, electric contact point K2, electric contact point K2 is arranged on key 3, circuit fracture K1 is arranged at below key 3, and when key 3 is pressed, electric contact point K2 connects circuit fracture K1, and circuit fracture K1 respectively draws at two ends a wire and is associated with pronunciation device 1, the mode that an on-off circuit key 3 adjacent with its dextrad is associated be select a circuit fracture K1 one end wire and this wire is cut off, this wire is at cut-off part self-assembling formation breakpoint one K3 and breakpoint two K4, breakpoint one K3 is by connection electric shock point one K5, breakpoint two K4 is by connection electric shock point two K6, point one K5 that gets an electric shock is arranged on the adjacent key 3 of dextrad, point two K6 that get an electric shock are arranged on the keyboard 2 of adjacent key 3 side of dextrad, point one K5 and point two K6 that get an electric shock that gets an electric shock when the adjacent key 3 of dextrad is not pressed contacts with each other to form conduction, point one K5 and point two K6 that get an electric shock that gets an electric shock when the adjacent key 3 of dextrad is pressed is separated from each other.
Wherein, above key 3, be provided with some standard scales mark A, when arbitrary standard scale mark A represents and plays one group of continuous key 3 immediately below it, send the scale of musical sound.
The present invention program refers to when being achieved in that and playing that a Z presses one group of continuous print key 3, the on-off circuit of one group of continuous print key 3 all the other keys 3 except most dextrad key 3 keeps non-conducting state, be specially its dextrad adjacent key 3 when being pressed down, breakpoint one K3 and breakpoint two K4 is in off-state, the scale of one group of continuous print key 3 except most dextrad key 3 representated by all the other keys 3 does not send, and mellotron only sends a most scale representated by dextrad key 3.
Embodiment 2
A kind of mellotron, comprise pronunciation device 1, keyboard 2, be arranged at the some keys 3 on keyboard 2, with key 3 on-off circuit H one to one, key 3 is associated with pronunciation device 1 by the on-off circuit corresponding with it, when key 3 is pressed, the on-off circuit of its correspondence is switched on thus makes pronunciation device 1 send a musical sound, discuss for keyboard 2 dextrad with player's right hand position, more the keep right scale of musical sound of its correspondence of key 3 is higher, key 3 than conventional tiny to such an extent as to one refer to potential energy pressing at least two continuous print keys 3; Arbitrary key 3 is associated except an on-off circuit key 3 adjacent with its dextrad of its correspondence except a key 3 of keeping right most, and be specially when the adjacent key 3 of its dextrad is pressed, the on-off circuit of this key 3 correspondence remains on non-conducting state.
On-off circuit comprises one first conducting strip D1, second conducting strip D2, first conducting strip D1 is arranged on key 3, second conducting strip D2 is arranged at below key 3, when key 3 is pressed, the first conducting strip D1 touches the second conducting strip D2 and connects to make on-off circuit, and the first conducting strip D1 and the second conducting strip D2 respectively draws a circuit and is associated with pronunciation device 1, the mode that an on-off circuit key 3 adjacent with its dextrad is associated is that the circuit of drawing at the second conducting strip D2 is provided with an electromagnetic switch D3, electromagnetic switch D3 has a corresponding working power D4, the connection line of electromagnetic switch D3 and working power D4 is provided with the 3rd conducting strip D5 and the 4th conducting strip D6, when 3rd conducting strip D5 and the 4th conducting strip D6 touches, electromagnetic switch D3 connection working power D4 makes electromagnetic switch D3 be in off-state, when 3rd conducting strip D5 and the 4th conducting strip D6 does not touch, electromagnetic switch D3 access failure working power D4 makes electromagnetic switch D3 close and is in on-state, 3rd conducting strip D5 is arranged on the adjacent key 3 of dextrad, 4th conducting strip D6 is arranged on the keyboard 2 of adjacent key 3 side of dextrad, when the adjacent key 3 of dextrad is pressed, the 3rd conducting strip D5 and the 4th conducting strip D6 touches mutually.
The present invention program refers to when being achieved in that and playing that a Z presses one group of continuous print key 3, the on-off circuit of one group of continuous print key 3 all the other keys 3 except most dextrad key 3 keeps non-conducting state, be specially its dextrad adjacent key 3 when being pressed down, electromagnetic switch D3 is in off-state, the scale of one group of continuous print key 3 except most dextrad key 3 representated by all the other keys 3 does not send, and mellotron only sends a most scale representated by dextrad key 3.
Certainly, according to technique scheme principle, manufacture a frame and be also fine with the mellotron of the most left-hand key of one group of continuous key for the benchmark that pronounces.
Embodiment 3
A kind of mellotron, comprise pronunciation device 1, keyboard 2, be arranged at the some keys 3 on keyboard 2, with key 3 on-off circuit H one to one, key 3 is associated with pronunciation device 1 by the on-off circuit corresponding with it, when key 3 is pressed, the on-off circuit of its correspondence is switched on thus makes pronunciation device 1 send a musical sound, discuss for keyboard 2 dextrad with player's right hand position, more the keep right scale of musical sound of its correspondence of key 3 is higher, key 3 than conventional tiny to such an extent as to one refer to potential energy pressing at least two continuous print keys 3; Arbitrary key 3 is associated except an on-off circuit key 3 adjacent with its left-hand of its correspondence except the key 3 kept left most, and be specially when the adjacent key 3 of its left-hand is pressed, the on-off circuit of this key 3 correspondence remains on non-conducting state.
Wherein, on-off circuit comprises a circuit fracture K1, electric contact point K2, electric contact point K2 is arranged on key 3, circuit fracture K1 is arranged at below key 3, and when key 3 is pressed, electric contact point K2 connects circuit fracture K1, and circuit fracture K1 respectively draws at two ends a wire and is associated with pronunciation device 1, the mode that an on-off circuit key 3 adjacent with its left-hand is associated be select a circuit fracture K1 one end wire and this wire is cut off, this wire is at cut-off part self-assembling formation breakpoint one K3 and breakpoint two K4, breakpoint one K3 is by connection electric shock point one K5, breakpoint two K4 is by connection electric shock point two K6, point one K5 that gets an electric shock is arranged on the adjacent key 3 of left-hand, point two K6 that get an electric shock are arranged on the keyboard 2 of adjacent key 3 side of left-hand, point one K5 and point two K6 that get an electric shock that gets an electric shock when the adjacent key 3 of left-hand is not pressed contacts with each other to form conduction, point one K5 and point two K6 that get an electric shock that gets an electric shock when the adjacent key 3 of left-hand is pressed is separated from each other.
Although the present invention program is described by reference to preferred embodiment, those skilled in the art should understand, and in the scope of claims, can do the various changes in form and details.