Music switching circuit

Abstract

The utility model discloses a music switch circuit, which comprises a controller, an electronic switch circuit, a mechanical switch, a first normally-closed analog switch, a second normally-closed analog switch, a first normally-open analog switch and a second normally-open analog switch, the output end of the mechanical switch is connected with the audio signal output end through the second normally-closed analog switch. The input end of the electronic switch circuit is connected with an audio signal input end through a first normally open analog switch, and the input end of the electronic switch circuit is connected with an audio signal output end through a second normally open analog switch; the controller is electrically connected with the electronic switch circuit, the mechanical switch, the first normally-closed analog switch, the second normally-closed analog switch, the first normally-open analog switch and the second normally-open analog switch. According to the utility model, the switching function of the sound pick-up can be used under both active and passive conditions, i.e., the switching can still be carried out under the condition of power failure.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric control music technical field especially discloses a music switch circuit. BACKGROUND

[0002] The electric guitar five-gear switch is a kind of accessory for electric guitar, mainly used for tone conversion and volume adjustment. It usually has five gears, and each gear can switch different tone effects to meet the needs of different music styles. The ordinary active and passive electric guitar five-gear switch can only be used to switch five-gear pickup coil combinations. The ordinary passive electric guitar connection mode is shown in Figure 1 However, the existing electric guitar music switch circuit has defects: if the power is off, the pickup switching function cannot be used in active and passive states, and there is no way to switch between active and passive states.

[0003] Therefore, the above-mentioned defects of the existing electric guitar music switch circuit are the technical problems to be solved at present. INVENTION CONTENTS

[0004] The utility model provides a music switch circuit, aims at solving at least one of the defects of the existing electric guitar music switch circuit.

[0005] The utility model relates to a music switch circuit, including controller, electronic switch circuit, mechanical switch, first normally closed analog switch, second normally closed analog switch, first normally open analog switch and second normally open analog switch, the input end of mechanical switch is connected with audio signal input end through first normally closed analog switch, and the output end of mechanical switch is connected with audio signal output end through second normally closed analog switch;The input end of electronic switch circuit is connected with audio signal input end through first normally open analog switch, and the input end of electronic switch circuit is connected with audio signal output end through second normally open analog switch;Controller is connected with electronic switch circuit, mechanical switch, first normally closed analog switch, second normally closed analog switch, first normally open analog switch and second normally open analog switch electricity respectively.

[0006] Further, the music switch circuit further includes an effect processing circuit, and the input end of the effect processing circuit is connected with the output end of the electronic switch circuit and the output end of the mechanical switch respectively.

[0007] Further, the effect processing circuit includes an operational amplifier, an analog-to-digital converter, a digital signal processor and a digital-to-analog converter connected in sequence.

[0008] Further, the music switch circuit further includes an effect display circuit, and the effect display circuit is connected with the controller.

[0009] Further, the effect display circuit adopts an RGB color lamp display module.

[0010] Further, the electronic switch circuit comprises a first switch circuit and a second switch circuit in parallel.

[0011] Further, the first switch circuit comprises a first multi-channel digital control analog switch, and the second switch circuit comprises a second multi-channel digital control analog switch.

[0012] Further, the first multi-channel digital control analog switch and the second multi-channel digital control analog switch are both CD4052.

[0013] Further, the controller is an MCU.

[0014] Further, the mechanical switch is a five-gear mechanical switch.

[0015] The utility model discloses obtained beneficial effect is:

[0016] The utility model provides a music switch circuit, including controller, electronic switch circuit, mechanical switch, first normally closed analog switch, second normally closed analog switch, first normally open analog switch and second normally open analog switch, and the input end of mechanical switch is connected with audio signal input end through first normally closed analog switch, and the output end of mechanical switch is connected with audio signal output end through second normally closed analog switch, the input end of electronic switch circuit is connected with audio signal input end through first normally open analog switch, and the input end of electronic switch circuit is connected with audio signal output end through second normally open analog switch, and controller is connected with electronic switch circuit, mechanical switch, first normally closed analog switch, second normally closed analog switch, first normally open analog switch and second normally open analog switch electricity respectively. The utility model provides a music switch circuit, and mechanical switch works when not starting, and is used as ordinary pickup coil combination switching;After starting, electronic switch circuit works, can transform into multi-gear tone effect switching, and pickup coil combination gear switching utilizes multi-channel digital control analog switch chip to realize, and at this time, with the help of multi-channel digital control analog switch chip, electric guitar can realize more kinds of pickup coil combination switching, so that in the active and passive condition, can use, namely still can carry out switching under the power failure condition. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the circuit schematic diagram of prior electric guitar music switch circuit;

[0018] Figure 2 It is the circuit schematic diagram of the utility model music switch circuit.

[0019] EXPLANATION OF DRAWINGS:

[0020] 10, controller; 20, electronic switch circuit; 30, mechanical switch; 40, effect processing circuit; 51, first normally closed analog switch; 52, second normally closed analog switch; 61, first normally open analog switch; 62, second normally open analog switch; 70, effect display circuit; 41, operational amplifier; 42, analog-to-digital converter; 43, digital signal processor; 44, digital-to-analog converter. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0022] As shown in Figure 2 , the utility model discloses a music switch circuit, including controller 10, electronic switch circuit 20, mechanical switch 30, first normally closed analog switch 51, second normally closed analog switch 52, first normally open analog switch 61 and second normally open analog switch 62, and the input end of mechanical switch 30 is connected with audio signal input end through first normally closed analog switch 51, and the output end of mechanical switch 30 is connected with audio signal output end through second normally closed analog switch 52;The input end of electronic switch circuit 20 is connected with audio signal input end through first normally open analog switch 61, and the input end of electronic switch circuit 20 is connected with audio signal output end through second normally open analog switch 62;Controller 10 is electrically connected with electronic switch circuit 20, mechanical switch 30, first normally closed analog switch 51, second normally closed analog switch 52, first normally open analog switch 61 and second normally open analog switch 62 respectively.In this embodiment, the default working state of first normally closed analog switch 51 and second normally closed analog switch 52 is normally closed, so that mechanical switch 30 works under the power-off condition, and the pickup switching function can still be used under the power-off condition.

[0023] Further, please see Figure 2 , the utility model discloses a music switch circuit, and the music switch circuit still includes effect processing circuit 40, and the input end of effect processing circuit 40 is connected with the output end of electronic switch circuit 20 and the output end of mechanical switch 30 respectively.Specifically, effect processing circuit 40 includes operational amplifier 41, analog-to-digital converter 42, digital signal processor 43 and digital-to-analog converter 44 that are connected in turn.Processing the audio signal collected by the pickup using effect processing circuit 40 adds tone effects.

[0024] Preferably, please see Figure 2 , the utility model discloses a music switch circuit, and the music switch circuit still includes effect display circuit 70, and effect display circuit 70 is connected with controller 10.Specifically, effect display circuit 70 adopts RGB (red, green, blue) color lamp display module, so as to add color display effects.

[0025] Further, see Figure 2 The music switch circuit provided in the embodiment includes a first switch circuit and a second switch circuit in parallel. Specifically, the first switch circuit includes a first multi-channel digital control analog switch, and the second switch circuit includes a second multi-channel digital control analog switch. In the embodiment, the first multi-channel digital control analog switch and the second multi-channel digital control analog switch are both CD4052. The controller 10 is an MCU (Microcontroller Unit). The mechanical switch 30 is a five-grade mechanical switch, which can switch five signals. The music switch circuit provided in the embodiment allows the electric guitar to realize more kinds of pickup coil combination switching.

[0026] As shown in Figure 2 The working principle of the music switch circuit provided in the embodiment is as follows:

[0027] When power is off, the circuits connected to the normally open analog switch are all invalid, the electric guitar pickup audio signal is connected to the five-grade mechanical switch through the first normally closed analog switch 51, then is adjusted by the potentiometer, and finally is output at the electric guitar output interface PJ1.

[0028] After power is on, the MCU can control all the normally closed analog switches to be open, the normally open analog switch to be closed, and the five-grade mechanical switch to be a controller of the MCU, so as to control the switching of five effects and display the color corresponding to each effect through the RGB color lamp display module. The MCU controls the first multi-channel digital control analog switch U9 and the second multi-channel digital control analog switch U10 to switch the pickup coil combination, inputs the signal to the effect processing circuit 40, and finally outputs the signal at the guitar audio interface PJ1.

[0029] Compared with the prior art, the music switch circuit provided by the embodiment adopts a controller, an electronic switch circuit, a mechanical switch, a first normally closed analog switch, a second normally closed analog switch, a first normally open analog switch and a second normally open analog switch, the input end of the mechanical switch is connected with the audio signal input end through the first normally closed analog switch, and the output end of the mechanical switch is connected with the audio signal output end through the second normally closed analog switch; the input end of the electronic switch circuit is connected with the audio signal input end through the first normally open analog switch, and the input end of the electronic switch circuit is connected with the audio signal output end through the second normally open analog switch; and the controller is electrically connected with the electronic switch circuit, the mechanical switch, the first normally closed analog switch, the second normally closed analog switch, the first normally open analog switch and the second normally open analog switch, respectively. The music switch circuit provided by the embodiment is used as a common pickup coil combination switching when the mechanical switch works without starting the machine, and can be converted into multi-grade tone effect switching when the electronic switch circuit works after starting the machine, and the pickup coil combination gear switching is realized by using a multi-channel digital control analog switch chip, and the electric guitar can realize more kinds of pickup coil combination switching by means of the multi-channel digital control analog switch chip, so that the electric guitar can be used in active and passive conditions, and can be switched in the power-off condition.

[0030] Although the preferred embodiments of the present application have been described, those skilled in the art who are informed of the basic inventive concept can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A music switch circuit, characterized by, The music switch circuit comprises a controller (10), an electronic switch circuit (20), a mechanical switch (30), a first normally closed analog switch (51), a second normally closed analog switch (52), a first normally open analog switch (61) and a second normally open analog switch (62), an input end of the mechanical switch (30) is connected with an audio signal input end through the first normally closed analog switch (51), an output end of the mechanical switch (30) is connected with an audio signal output end through the second normally closed analog switch (52), an input end of the electronic switch circuit (20) is connected with the audio signal input end through the first normally open analog switch (61), an input end of the electronic switch circuit (20) is connected with the audio signal output end through the second normally open analog switch (62), and the controller (10) is electrically connected with the electronic switch circuit (20), the mechanical switch (30), the first normally closed analog switch (51), the second normally closed analog switch (52), the first normally open analog switch (61) and the second normally open analog switch (62) respectively.

2. The music switching circuit of claim 1, wherein, The music switch circuit further comprises an effect processing circuit (40), and input ends of the effect processing circuit (40) are connected with output ends of the electronic switch circuit (20) and the mechanical switch (30) respectively.

3. The music switching circuit of claim 2, wherein, The effect processing circuit (40) comprises an operational amplifier (41), an analog-to-digital converter (42), a digital signal processor (43) and a digital-to-analog converter (44) connected in sequence.

4. The music switching circuit of claim 1, wherein, The music switch circuit further comprises an effect display circuit (70), and the effect display circuit (70) is connected with the controller (10).

5. The music on-off circuit according to claim 1, wherein The electronic switch circuit (20) comprises a first switch circuit and a second switch circuit connected in parallel.

6. The music switching circuit of claim 5, wherein, The first switch circuit comprises a first multi-channel digital control analog switch, and the second switch circuit comprises a second multi-channel digital control analog switch.

7. The music switching circuit of claim 6, wherein, The first multi-channel digital control analog switch and the second multi-channel digital control analog switch are both CD4052.

8. The music on-off circuit of claim 1, wherein, The controller (10) is an MCU.

9. The music on-off circuit according to claim 1, wherein The mechanical switch (30) is a five-grade mechanical switch.

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