Sound device capable of changing output timbre of electron tube

Abstract

The utility model discloses an audible device capable of changing output timbre of an electronic tube. The device comprises an input device, a changing module and a loudspeaker device. The changing module comprises a power supply switching circuit, a tone changing circuit and a power supply circuit; the timbre changing circuit is connected with the power supply switching circuit and is also connected with the input equipment and the loudspeaker equipment; and the power supply switching circuit is also connected with the power supply circuit. According to the embodiment of the utility model, the power supply switching circuit utilizes the use power supply and the switching power supply to carry out switching processing so as to obtain changed voltage; and the timbre changing circuit performs timbre changing processing on the initial audio data by changing the voltage to obtain the target audio data, and the loudspeaker equipment performs playing processing on the target audio data, so that the change of the timbre of the electronic tube is realized, and the functionality of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of audio devices, in particular to an audio device that changes the output tone of an electron tube. Background Art

[0002] As users grew fonder of the sound of tube amplifiers, tubes were gradually reintroduced into audio equipment. At the same time, users also wanted to experience the tones of different tubes in a single audio system. Consequently, the inability to hear the tones of different tubes in a single audio system led to the problem of lower functionality. Utility Model Content

[0003] The utility model provides an audio device for changing the output tone of an electron tube, aiming to solve the problem in the prior art that the tones of different electron tubes cannot be heard in one audio device, which leads to low functionality of the audio device.

[0004] In order to solve the above problems, the present invention proposes an audio device for changing the timbre of a tube output, comprising an input device, a changing module, and a speaker device; the changing module comprises a power switching circuit, a timbre changing circuit, and a power circuit; the timbre changing circuit is connected to the power switching circuit and is also connected to the input device and the speaker device; the power switching circuit is also connected to the power circuit; the power switching circuit comprises a switching power supply;

[0005] Among them, the input device is used to send initial audio data to the timbre changing circuit; the power supply circuit is used to provide the use power supply to the power switching circuit; the power switching circuit is used to use the use power supply and the switching power supply to perform switching processing to obtain a changed voltage, and transmit the changed voltage to the timbre changing circuit; the timbre changing circuit is used to use the received changed voltage to change the timbre of the initial audio data to obtain target audio data, and send the target audio data to the speaker device; the speaker device is used to play the target audio data.

[0006] Compared with the prior art, the present invention provides an audio device for changing the timbre of a vacuum tube output, comprising an input device, a changing module and a speaker device; the changing module comprises a power switching circuit, a timbre changing circuit and a power circuit; the timbre changing circuit is connected to the power switching circuit and is also connected to the input device and the speaker device; the power switching circuit is also connected to the power circuit; the power switching circuit includes a switching power supply; wherein the input device is used to send initial audio data to the timbre changing circuit; the power circuit is used to provide a working power supply to the power switching circuit; the power switching circuit is used to perform switching processing using the working power supply and the switching power supply to obtain a changed voltage, and transmit the changed voltage to the timbre changing circuit; the timbre changing circuit is used to change the timbre of the initial audio data using the received changed voltage to obtain target audio data, and transmit the target audio data to the speaker device; the speaker device is used to play the target audio data. By implementing the embodiments of the present invention, a power switching circuit uses a power supply and a switching power supply to perform switching processing to obtain a changed voltage; a timbre changing circuit uses the changed voltage to change the timbre of initial audio data to obtain target audio data so that the target audio data can be played by a speaker device, thereby achieving a change in the timbre of the tube and improving the functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0008] Figure 1 A schematic block diagram of an audio device for changing the output tone of a tube according to an embodiment of the present invention;

[0009] Figure 2 A schematic circuit diagram of a timbre changing circuit in an audio device for changing the timbre of a tube output provided by an embodiment of the present invention;

[0010] Figure 3 A schematic circuit diagram of a power switching circuit in an audio device for changing the output tone of a tube according to an embodiment of the present invention;

[0011] Figure 4 This is a schematic circuit diagram of a power supply circuit in an audio device for changing the output tone of a tube provided by an embodiment of the present invention.

[0012] Among them, the reference numerals in the figures are as follows:

[0013] 1. An audio device for changing the output tone of a vacuum tube; 10. A changing module; 11. A tone changing circuit; 12. A power switching circuit; 13. A power supply circuit; 20. An input device; 30. A speaker device. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] Directional terms used in this disclosure, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and "side," refer only to directions in the accompanying drawings. Therefore, these directional terms are intended to illustrate and facilitate understanding of this disclosure and are not intended to limit this disclosure. Furthermore, in the accompanying drawings, similar or identical structures are denoted by the same reference numerals.

[0016] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0017] It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0018] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0019] See also Figures 1 to 4The present invention provides an audio device 1 for changing the timbre of a tube output, comprising an input device 20, a changing module 10, and a speaker device 30; the changing module 10 comprises a power switching circuit 12, a timbre changing circuit 11, and a power circuit 13; the timbre changing circuit 11 is connected to the power switching circuit 12, and is also connected to the input device 20 and the speaker device 30; the power switching circuit 12 is also connected to the power circuit 13; the power switching circuit 12 comprises a switching power supply;

[0020] Among them, the input device 20 is used to send initial audio data to the timbre changing circuit 11; the power supply circuit 13 is used to provide the use power supply to the power switching circuit 12; the power switching circuit 12 is used to use the use power supply and the switching power supply to perform switching processing to obtain a changed voltage, and transmit the changed voltage to the timbre changing circuit 11; the timbre changing circuit 11 is used to use the received changed voltage to change the timbre of the initial audio data to obtain target audio data, and send the target audio data to the speaker device 30; the speaker device 30 is used to play the target audio data.

[0021] In this embodiment, if Figure 1 As shown, the input device 20 can be a mobile phone device or a computer device, which is used to provide the initial audio data; the voltage provided by the power supply is 3.7V to 4.2V; the power switching circuit 12 includes the switching power supply, and the switching power supply is +1.8V. Figure 2 As shown, the used power supply is represented as +VBAT, and the changed voltage is represented as TVCC.

[0022] The timbre changing circuit 11 is connected to the power switching circuit 12, the timbre changing circuit 11 is also connected to the input device 20, and the timbre changing circuit 11 is also connected to the speaker device 30; the power switching circuit 12 is also connected to the power circuit 13. That is, when the connection of the audio device 1 for changing the timbre of the output of the electron tube is ensured to be normal, and communication between the timbre changing circuit 11, the power switching circuit 12, the input device 20, and the speaker device 30 is normal, and communication between the power switching circuit 12 and the power circuit 13 is normal, the power switching circuit 12 performs switching processing based on the received working power source and the detected switching power source to obtain the changed voltage, and transmits the changed voltage to the timbre changing circuit 11; the timbre changing circuit 11 performs timbre changing processing on the received initial audio data based on the received changed voltage to obtain the target audio data, and transmits the target audio data to the speaker device 30; and the speaker device 30 plays the target audio data. Therefore, it is possible to change the tube tone, thereby improving functionality.

[0023] Through the above embodiment, it can be seen that the power switching circuit 12 uses the power supply and the switching power supply to perform switching processing to obtain a changed voltage; the tone changing circuit 11 uses the changed voltage to change the tone of the initial audio data to obtain target audio data, so that the speaker device 30 can play the target audio data, thereby achieving a change in the tube tone and improving the functionality of the device.

[0024] In one embodiment, if Figures 1 to 2 As shown, the timbre changing circuit 11 includes a first interface J1, a second interface J2, a dual potentiometer WR1, a first timbre changing circuit, a first amplifier circuit, a second timbre changing circuit, and a second amplifier circuit; the first interface J1 is connected to the input device 20 and also to the dual potentiometer WR1; the dual potentiometer WR1 is also connected to the first timbre changing circuit and the second timbre changing circuit; the first timbre changing circuit is also connected to the first amplifier circuit, which is also connected to the second interface J2; the second timbre changing circuit is also connected to the second amplifier circuit, which is also connected to the second interface J2; the first amplifier circuit is also connected to the second amplifier circuit; and the second interface J2 is also connected to the speaker device 30.

[0025] In this embodiment, if Figures 1 to 2As shown, the model of the first interface J1 can be PJ-320B; the model of the second interface J2 can be PJ-320B; the dual potentiometer WR1 is composed of two three-pin potentiometers, and the specifications of the two resistors included therein can both be 50K.

[0026] Pin 3 of the first interface J1 is grounded, and pins 3 and 6 of the dual potentiometer WR1 are both grounded. Pin 1 of the first interface J1 is connected to pin 4 of the dual potentiometer WR1, and pin 2 of the first interface J1 is connected to pin 1 of the dual potentiometer WR1. Pin 2 of the dual potentiometer WR1 is connected to the first timbre changing circuit; pin 5 of the dual potentiometer WR1 is connected to the second timbre changing circuit. The first amplifier circuit is connected to pins 1 and 3 of the second interface J2; and the second amplifier circuit is connected to pins 2 and 3 of the second interface J2.

[0027] The timbre changing circuit 11 receives the initial audio data transmitted from the input device 20 via the first interface J1, obtains the target audio data through the timbre changing processing by changing the voltage, and transmits the target audio data to the speaker device 30 via the second interface J2. Furthermore, the audio device 1 has two audio channels, a left channel and a right channel. Therefore, the initial audio data includes first initial audio data and second initial audio data, and correspondingly, the target audio data includes first target audio data and second target audio data.

[0028] Specifically, the first timbre changing circuit receives the first initial audio data via the first interface J1 and the dual potentiometer WR1, and performs timbre changing processing on the first initial audio data based on the changing voltage to obtain first target audio data, and then transmits the first target audio data to the first amplifying circuit. The first amplifying circuit amplifies the first target audio data and transmits the processed first target audio data to the speaker device 30 via the second interface J2 for playback. Simultaneously, the second timbre changing circuit receives the second initial audio data via the first interface J1 and the dual potentiometer WR1, and performs timbre changing processing on the second initial audio data based on the changing voltage to obtain second target audio data, and then transmits the second target audio data to the second amplifying circuit. The second amplifying circuit amplifies the second target audio data and transmits the processed second target audio data to the speaker device 30 via the second interface J2 for playback. Thus, the timbre of the tube can be changed, improving functionality.

[0029] Through the above embodiment, it can be seen that the first timbre changing circuit receives first initial audio data via the first interface J1 and the dual potentiometer WR1, and performs timbre processing on the first initial audio data based on the changed voltage to obtain first target audio data, and then sends the first target audio data to the first amplifying circuit. The first amplifying circuit amplifies the first target audio data and sends the processed first target audio data to the speaker device 30 via the second interface J2 for playback. Simultaneously, the second timbre changing circuit receives second initial audio data via the first interface J1 and the dual potentiometer WR1, and performs timbre processing on the second initial audio data based on the changed voltage to obtain second target audio data, and then sends the second target audio data to the second amplifying circuit. The second amplifying circuit amplifies the second target audio data and sends the processed second target audio data to the speaker device 30 via the second interface J2 for playback. Thus, the timbre of the tube can be changed, improving functionality.

[0030] In one embodiment, if Figures 1 to 2 As shown, the first tone changing circuit includes a first resistor R1, a first capacitor C1, a second resistor R2, a first electron tube T1, a second capacitor C2, a third resistor R3, a fourth resistor R4, and a third capacitor C3. A first end of the first resistor R1 is connected to the power switching circuit 12, and a second end of the first resistor R1 is connected to the positive electrode of the first capacitor C1 and the first end of the second resistor R2. The second end of the second resistor R2 is connected to the first and second pins of the first electron tube T1 and the first amplifier circuit. The third pin of the first electron tube T1 is connected to the second end of the third resistor R3, the fourth pin of the first electron tube T1 is connected to the positive electrode of the second capacitor C2 and the first end of the third resistor R3, and the fifth pin of the first electron tube T1 is connected to the second end of the fourth resistor R4 and the first end of the third capacitor C3. The negative electrode of the second capacitor C2 is connected to the second pin of the dual potentiometer WR1.

[0031] In this embodiment, if Figures 1 to 2 As shown, the specification of the first resistor R1 can be 1K; the specification of the first capacitor C1 can be 220uF; the specification of the second resistor R2 can be 100K; the model of the first electron tube T1 can be JAN6418; the specification of the second capacitor C2 can be 10uF; the specification of the third resistor R3 can be 470K; the specification of the fourth resistor R4 can be 220R; the specification of the third capacitor C3 can be 0.1u.

[0032] The negative electrode of the first capacitor C1, the second end of the third resistor R3, the third pin of the first electron tube T1, and the second end of the third capacitor C3 are all grounded. The first end of the fourth resistor R4 is connected to the first power supply; the first power supply is +3V, which can be provided by a power supply battery or a power supply circuit. Figure 2 The circuit uses +3V_F to represent the voltage. The first pin of the first electron tube T1 is the screen (anode), and the second and fourth pins are the grids.

[0033] The gate of pin 4 of the first electron tube T1 receives the first initial audio data via the first interface J1 and the dual potentiometer WR1. When the gate of pin 1 of the first electron tube T1 receives the changed voltage via the first resistor R1 and the second resistor R2, the voltage of the gate of pin 1 of the first electron tube T1 changes, while the second resistor R2 connected to the gate of pin 1 of the first electron tube T1 does not change. Therefore, the current of the gate of pin 1 of the first electron tube T1 changes. As a result, the first electron tube T1 processes the first initial audio data to change its timbre, outputs the processed first initial audio data through its gate of pin 1, and sends the processed first initial audio data to the first amplifying circuit.

[0034] Through the above embodiment, it can be seen that, under the action of changing the voltage, the first initial audio data is processed to change the timbre through the first electron tube T1 in combination with the first resistor R1, the first capacitor C1, the second resistor R2, the second capacitor C2, the third resistor R3, the fourth resistor R4, and the third capacitor C3. Therefore, the timbre of the electron tube is changed and the functionality is improved. The processed first initial audio data is sent to the first amplifying circuit so that the first amplifying circuit can subsequently perform targeted processing based on the processed first initial audio data.

[0035] In one embodiment, if Figures 1 to 2As shown, the first amplifier circuit includes a fourth capacitor C4, a first amplifier U1, a fifth capacitor C5, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a sixth capacitor C6 and a seventh capacitor C7; a first end of the fourth capacitor C4 is connected to the power switching circuit 12 and the 8th pin of the first amplifier U1; a first pin of the first amplifier U1 is connected to the second end of the sixth resistor R6 and the positive electrode of the fifth capacitor C5, a second pin of the first amplifier U1 is connected to the first end of the sixth resistor R6 and the first end of the seventh resistor R7, and a third pin of the first amplifier U1 is connected to the first and second pins of the first electron tube T1; a negative electrode of the fifth capacitor C5 is connected to the first end of the fifth resistor R5 and the first pin of the second interface J2; a second end of the fifth resistor R5 is connected to the first end of the sixth capacitor C6, a second end of the sixth capacitor C6 is connected to the negative electrode of the seventh capacitor C7 and the 3rd pin of the second interface J2; and a second end of the seventh resistor R7 is connected to the positive electrode of the seventh capacitor C7.

[0036] In this embodiment, if Figures 1 to 2 As shown, the specification of the fourth capacitor C4 can be 0.1u; the model of the first amplifier U1 can be NE5532; the specification of the fifth capacitor C5 can be 220uF; the specification of the fifth resistor R5 can be 10R; the specification of the sixth resistor R6 can be 5K1; the specification of the seventh resistor R7 can be 1K; the specification of the sixth capacitor C6 can be 0.1u; the specification of the seventh capacitor C7 can be 22uF.

[0037] The second end of the fourth capacitor C4 is grounded. The changed voltage is input from the eighth pin of the first amplifier U1.

[0038] The third pin of the first amplifier U1 receives the processed first initial audio data, amplifies the processed first initial audio data based on the changed voltage to obtain the second-processed first initial audio data, and sends the second-processed first initial audio data to the speaker device 30 through the second interface J2 for playback processing by the speaker.

[0039] Through the above embodiment, it can be seen that, under the action of changing the voltage, the first amplifier U1, the fourth capacitor C4, the fifth capacitor C5, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the sixth capacitor C6, and the seventh capacitor C7 amplify the processed first initial audio data to obtain secondary processed first initial audio data. The secondary processed first initial audio data is then transmitted to the speaker device 30 via the second interface J2 for playback by the speaker. Thus, the tube timbre is changed and functionality is improved.

[0040] In one embodiment, if Figures 1 to 2 As shown, the second tone changing circuit includes an eighth resistor R8, an eighth capacitor C8, a ninth resistor R9, a second electron tube T2, a ninth capacitor C9, a tenth resistor R10, an eleventh resistor R11, and a tenth capacitor C10. A first end of the eighth resistor R8 is connected to the power switching circuit 12, a second end of the eighth resistor R8 is connected to the positive electrode of the eighth capacitor C8 and the first end of the ninth resistor R9. A second end of the ninth resistor R9 is connected to both the first and second pins of the second electron tube T2 and the second amplifier circuit. A third pin of the second electron tube T2 is connected to the second end of the tenth resistor R10, a fourth pin of the second electron tube T2 is connected to the positive electrode of the ninth capacitor C9 and the first end of the tenth resistor R10, a fifth pin of the second electron tube T2 is connected to the second end of the eleventh resistor R11 and the first end of the tenth capacitor C10. A negative electrode of the ninth capacitor C9 is connected to the fifth pin of the dual potentiometer WR1.

[0041] In this embodiment, if Figures 1 to 2 As shown, the specification of the eighth resistor R8 can be 1K; the specification of the eighth capacitor C8 can be 220uF; the specification of the ninth resistor R9 can be 100K; the model of the second electron tube T2 can be JAN6418; the specification of the ninth capacitor C9 can be 10uF; the specification of the tenth resistor R10 can be 470K; the specification of the eleventh resistor R11 can be 220R, and the specification of the tenth capacitor C10 can be 0.1u.

[0042] The cathode of the eighth capacitor C8, the second end of the tenth resistor R10, the third pin of the second electron tube T2, and the second end of the tenth capacitor C10 are all grounded. The first end of the eleventh resistor R11 is connected to the first power supply; the first power supply is +3V and can be provided by a power supply battery or a power supply circuit. Figure 2 The circuit uses +3V_F to represent the voltage. The first pin of the second electron tube T2 is the screen (anode), and the second and fourth pins are the grids.

[0043] The gate of pin 4 of the second electron tube T2 receives the second initial audio data via the first interface J1 and the dual potentiometer WR1. When the gate of pin 1 of the second electron tube T2 receives the changed voltage via the eighth resistor R8 and the ninth resistor R9, the voltage at the gate of pin 1 of the second electron tube T2 changes, while the ninth resistor R9 connected to the gate of pin 1 of the second electron tube T2 remains unchanged. Therefore, the current at the gate of pin 1 of the second electron tube T2 changes. As a result, the second electron tube T2 processes the second initial audio data to change its timbre, outputs the processed second initial audio data via its gate of pin 1, and sends the processed second initial audio data to the second amplifying circuit.

[0044] Through the above embodiment, it can be seen that, under the action of changing the voltage, the second initial audio data is processed to change the timbre through the second electron tube T2 in combination with the eighth resistor R8, the eighth capacitor C8, the ninth resistor R9, the ninth capacitor C9, the tenth resistor R10, the eleventh resistor R11, and the tenth capacitor C10, thereby achieving the change of the electron tube timbre and improving the functionality; and the processed second initial audio data is sent to the second amplifying circuit, so that the second amplifying circuit can subsequently perform targeted processing based on the processed second initial audio data.

[0045] In one embodiment, if Figures 1 to 2 As shown, the second amplifier circuit includes an eleventh capacitor C11, a twelfth resistor R12, a twelfth capacitor C12, a thirteenth resistor R13, a fourteenth resistor R14 and a thirteenth capacitor C13; the cathode of the eleventh capacitor C11 is connected to the first amplifier circuit and the first end of the twelfth capacitor C12; the anode of the eleventh capacitor C11 is connected to the first end of the twelfth resistor R12; the second end of the twelfth resistor R12 is connected to the first end of the thirteenth resistor R13 and the sixth pin of the first amplifier U1; the fifth pin of the first amplifier U1 is connected to the first and second pins of the first electron tube T1, and the seventh pin of the first amplifier U1 is connected to the second end of the thirteenth resistor R13 and the positive electrode of the thirteenth capacitor C13; the cathode of the thirteenth capacitor C13 is connected to the second end of the fourteenth resistor R14 and the second pin of the second interface J2; and the first end of the fourteenth resistor R14 is connected to the second end of the twelfth capacitor C12.

[0046] In this embodiment, if Figures 1 to 2As shown, the specification of the eleventh capacitor C11 can be 22uF; the specification of the twelfth resistor R12 can be 1K; the specification of the twelfth capacitor C12 can be 0.1u; the specification of the thirteenth resistor R13 can be 5K1; the specification of the fourteenth resistor R14 can be 10R; the specification of the thirteenth capacitor C13 can be 220uF.

[0047] The fourth pin of the first amplifier U1 is grounded; the negative electrode of the eleventh capacitor C11 is connected to the negative electrode of the seventh capacitor C7.

[0048] Pin 5 of the first amplifier U1 receives the processed second initial audio data, performs amplification based on the changed voltage to obtain secondary processed second initial audio data, and sends the secondary processed second initial audio data to the speaker device 30 through the second interface J2.

[0049] Through the above embodiment, it can be seen that, under the action of changing the voltage, the processed second initial audio data is amplified by the first amplifier U1, the eleventh capacitor C11, the twelfth resistor R12, the twelfth capacitor C12, the thirteenth resistor R13, the fourteenth resistor R14, and the thirteenth capacitor C13 to obtain secondary-processed second initial audio data, and the secondary-processed second initial audio data is sent to the speaker device 30 via the second interface J2 for playback processing by the speaker. Therefore, the timbre of the tube is changed and the functionality is improved.

[0050] In one embodiment, if Figures 1 to 2 As shown, the tone changing circuit 11 further includes a fifteenth resistor R15, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth resistor R16, a sixteenth capacitor C16, and a seventeenth capacitor C17; a first end of the fifteenth resistor R15 is connected to the power switching circuit 12, the positive electrode of the fourteenth capacitor C14, and the first end of the fifteenth capacitor C15, and a second end of the fifteenth resistor R15 is connected to the first end of the sixteenth resistor R16, the negative electrode of the fourteenth capacitor C14, and the fifteenth capacitor C15 the second end of the sixteenth resistor R16 is connected to the positive electrode of the sixteenth capacitor C16 and the first end of the seventeenth capacitor C17, the second end of the sixteenth resistor R16 is connected to the negative electrode of the sixteenth capacitor C16 and the second end of the seventeenth capacitor C17; the negative electrode of the fourteenth capacitor C14 is connected to the positive electrode of the sixteenth capacitor C16; the second end of the fifteenth capacitor C15 and the first end of the seventeenth capacitor C17 are both connected to the first amplifying circuit and the second amplifying circuit.

[0051] In this embodiment, if Figures 1 to 2As shown, the specification of the fifteenth resistor R15 can be 10K; the specification of the fourteenth capacitor C14 can be 220uF; the specification of the fifteenth capacitor C15 can be 0.1u; the model of the sixteenth resistor R16 can be 10K; the specification of the sixteenth capacitor C16 can be 220uF; the specification of the seventeenth capacitor C17 can be 0.1u.

[0052] Among them, the second end of the sixteenth resistor R16, the negative electrode of the sixteenth capacitor C16 and the second end of the seventeenth capacitor C17 are all grounded; the second end of the fifteenth capacitor C15 and the first end of the seventeenth capacitor are all connected to the negative electrode of the eleventh capacitor C11 and the negative electrode of the seventh capacitor C7.

[0053] The changed voltage is filtered by the fifteenth resistor R15, the fourteenth capacitor C14, the fifteenth capacitor C15, the sixteenth resistor R16, the sixteenth capacitor C16, and the seventeenth capacitor C17 to provide a stable voltage to the first amplifier circuit and the second amplifier circuit, thereby improving the stability of the device.

[0054] In one embodiment, if Figures 1 to 3 As shown, the power switching circuit 12 includes an eighteenth capacitor C18, a first inductor L1, a boost chip U2, a first diode D1, a seventeenth resistor R17, a nineteenth capacitor C19, a twentieth capacitor C20, an eighteenth resistor R18, a nineteenth resistor R19, a switch chip U3, a twenty-first capacitor C21 and a first switch; the first end of the eighteenth capacitor C18 is connected to the power circuit 13, the fourth and fifth pins of the boost chip U2, and the first end of the first inductor L1; the first pin of the boost chip U2 is connected to the second end of the first inductor L1 and the positive electrode of the first diode D1; the third pin of the boost chip U2 is connected to the eighteenth resistor R The first end of the first resistor R18, the first end of the nineteenth resistor R19 and the second end of the seventeenth resistor R17 are connected; the cathode of the first diode D1 is connected to the first end of the seventeenth resistor R17, the first end of the nineteenth capacitor C19, the first end of the twentieth capacitor C20 and the tone changing circuit; the second end of the nineteenth resistor R19 is connected to the first pin of the switch chip U3; the fourth pin of the switch chip U3 is connected to the first pin of the first switch SW1, and the second pin of the first switch SW1 is connected to the switching power supply; the fifth pin of the switch chip U3 is connected to the power supply circuit 13 and the first end of the twenty-first capacitor C21.

[0055] In this embodiment, if Figures 1 to 3As shown, the specification of the eighteenth capacitor C18 can be 105; the model of the first inductor L1 can be SPH252012H4R7MT; the model of the boost chip U2 can be STI3508C; the model of the first diode D1 can be 1N5189HW; the specification of the seventeenth resistor R17 can be 330K; the specification of the nineteenth capacitor C19 can be 106 / 50V; the specification of the twentieth capacitor C20 can be 104 / 50V; the specification of the eighteenth resistor R18 can be 12K; the specification of the nineteenth resistor R19 can be 47K; the model of the switch chip U3 can be TMUX1101DCKR; the specification of the twenty-first capacitor C21 can be 105; the model of the first switch SW1 can be SPDT, and its first pin is the common end; the voltage corresponding to the switching power supply can be +1.8V, which can be provided by a power supply battery or a power supply circuit.

[0056] The second end of the eighteenth capacitor C18, the second pin of the boost chip U2, the second end of the eighteenth resistor R18, the second and third pins of the switch chip U3, the second end of the nineteenth capacitor C19, and the second end of the twentieth capacitor C20 are all grounded. The first switch SW1 can be controlled to be grounded or connected to the switching power supply.

[0057] The 5th and 4th pins of the boost chip U2 receive the power supply through the eighteenth capacitor C18, and the 4th pin of the boost chip U2 becomes a high voltage. At this time, the boost chip U2 starts to work; the changed voltage is input through the 3rd pin of the boost chip U2, and the calculated voltage is obtained by calculating the voltage value of the 3rd pin of the boost chip U2, the seventeenth resistor R17, the eighteenth resistor R18 and / or the nineteenth resistor R19. The calculated voltage is output from the 1st pin of the boost chip U2, and the calculated voltage is obtained by processing through the first diode D1, the nineteenth capacitor C19 and the twentieth capacitor C20.

[0058] When pin 1 of the first switch SW1 is switched to connect to pin 2 of the first switch SW1, that is, pin 1 of the first switch SW1 is connected to the switching power supply, pin 4 of the switch chip U3 is at a high voltage, disconnecting pins 1 and 2 thereof, and short-circuiting the nineteenth resistor R19. The calculated voltage is then correlated with the voltage values ​​of the seventeenth resistor R17, the eighteenth resistor R18, and pin 3 of the boost chip U2: calculated voltage = VFB(1+R17 / R18); where VFB is the voltage value of pin 3 of the boost chip U2, which is equal to 0.6; R17 is the resistance value of the seventeenth resistor R17; and R18 is the resistance value of the eighteenth resistor R18. Thus, the calculated voltage is output from pin 1 of the boost chip U2 and processed by the first diode D1, the nineteenth capacitor C19, and the twentieth capacitor C20 to obtain the changed voltage TVCC.

[0059] When pin 1 of the first switch SW1 is connected to pin 3 of the first switch SW1 (i.e., pin 1 of the first switch SW1 is grounded), pin 4 of the switch chip U3 is at a low potential, controlling its pins 1 and 2 to be conductive. The calculated voltage is then correlated with the voltages of the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, and pin 3 of the boost chip U2: Calculated voltage = VFB(1+R17 / R18 / / R19), where VFB is the voltage of pin 3 of the boost chip U2, which is equal to 0.6; R17 is the resistance of the seventeenth resistor R17; R18 is the resistance of the eighteenth resistor R18; and R19 is the resistance of the nineteenth resistor R19. Thus, the calculated voltage is output from pin 1 of the boost chip U2 and processed by the first diode D1, the nineteenth capacitor C19, and the twentieth capacitor C20 to obtain the changed voltage TVCC.

[0060] At the same time, the power switching circuit 12 transmits the changed voltage TVCC obtained through switching and calculation and processing through the first diode D1, the nineteenth capacitor C19 and the twentieth capacitor C20 to the tone changing circuit, that is, it is connected to the first end of the first resistor R1, the first end of the fourth capacitor C4, the 8th pin of the first amplifier U1, the first end of the fifteenth resistor R15, the positive electrode of the fourteenth capacitor C14, the first end of the fifteenth capacitor C15, and the first end of the eighth resistor R8.

[0061] Through the above embodiment, it can be seen that under the action of the power supply, the boost chip U2 switches and calculates the changed voltage through the eighteenth capacitor C18, the first inductor L1, the first diode D1, the seventeenth resistor R17, the nineteenth capacitor C19, the twentieth capacitor C20, the eighteenth resistor R18, the nineteenth resistor R19, the switch chip U3, the twenty-first capacitor C21, the first switch and the switching power supply, so that the tone change circuit 11 performs targeted processing according to the changed voltage.

[0062] In one embodiment, if Figures 1 to 4 As shown, the power supply circuit 13 includes a charging interface DC1, a 22nd capacitor C22, a 20th resistor R20, a 21st resistor R21, a charging management chip U4, a first light-emitting diode LED1, a second light-emitting diode LED2, a 23rd capacitor C23, a battery CN1 and a 22nd resistor R22; the second pin of the charging interface DC1 is connected to the first end of the 22nd capacitor C22, the first end of the 20th resistor R20, the first end of the 21st resistor R21 and the 4th pin and the 8th pin of the charging management chip U4; the second end of the 20th resistor R20 is connected to the positive electrode of the first light-emitting diode LED1, and the first The cathode of the light-emitting diode LED1 is connected to the 6th pin of the charging management chip U4; the second end of the 21st resistor R21 is connected to the anode of the second light-emitting diode LED2, and the cathode of the second light-emitting diode LED2 is connected to the 7th pin of the charging management chip U4; the 5th pin of the charging management chip U4 is connected to the first end of the 23rd capacitor C23 and the 1st pin of the battery CN1; the second end of the 23rd capacitor C23 is connected to the 1st and 9th pins of the charging management chip U4 and the 2nd pin of the battery CN1; the 2nd pin of the charging management chip U4 is connected to the first end of the 22nd resistor R22.

[0063] In this embodiment, if Figures 1 to 4 As shown, the type of the charging interface DC1 is a DC socket, and its specification can be DC_JK_5.5*2.1MM (millimeter); the specification of the 22nd capacitor C22 can be 0.1u; the specification of the 20th resistor R20 can be 1K; the specification of the 21st resistor R21 can be 1K; the model of the charging management chip U4 can be TP4056; the type of the first light-emitting diode LED1 can be RED; the type of the second light-emitting diode LED2 can be RED; the specification of the 23rd capacitor C23 can be 0.1u; the specification of the 22nd resistor R22 can be 1K.

[0064] Among them, the 1st pin, G1 pin, G2 pin, G3 pin and G4 pin of the charging interface DC1 are all grounded, the second end of the 22nd capacitor C22, the 1st pin and the 3rd pin of the charging management chip U4 and the 2nd pin of the battery CN1 are all grounded; the 1st pin of the battery is connected to the first end of the 18th capacitor C18, the first end of the first inductor L1, and the 4th pin and the 5th pin of the boost chip U2.

[0065] The charging interface DC1 is connected to an external power socket so that the charging management chip U4 controls the charging process; the 4th and 8th pins of the charging management chip U4 obtain the power supply input from the external power socket through the 2nd pin of the charging interface DC1, and the 6th and 7th pins of the charging management chip U4 obtain the power supply through the 2nd pin of the charging interface DC1, the 22nd capacitor C22, the 20th resistor R20 and the 21st resistor R21; at this time, the charging management chip U4 charges the battery CN1 through the 5th and 9th pins and the 23rd capacitor C23; the 1st pin of the battery CN1 provides the power supply to the power switching circuit 12.

[0066] Through the above embodiments, it can be seen that the power supply circuit 13 charges the battery CN1 and provides power supply to the power switching circuit 12, providing a basis for the power switching circuit 12 to perform targeted processing according to the power supply or for the power switching circuit 12 to provide power for use, so as to realize data communication, ensure the accuracy of the data, and thereby improve the functionality of the device.

[0067] In one embodiment, if Figures 1 to 4 As shown, the voltage provided corresponding to the changed voltage is 17V to 21V.

[0068] In this embodiment, if Figures 1 to 4 As shown, the changed voltage is determined by the power switching circuit 12, specifically by switching and calculating the boost chip U2, the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the switch chip U3, the first switch SW1, and the switching power supply, in combination with the first diode D1, the nineteenth capacitor C19, and the twentieth capacitor C20. Therefore, data accuracy is ensured, thereby improving the functionality of the device.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An audio device for changing the timbre of a tube output, characterized in that: The device comprises an input device, a changing module and a speaker device; the changing module comprises a power switching circuit, a timbre changing circuit and a power circuit; the timbre changing circuit is connected to the power switching circuit and is also connected to the input device and the speaker device; the power switching circuit is also connected to the power circuit; the power switching circuit comprises a switching power supply; Among them, the input device is used to send initial audio data to the timbre changing circuit; the power supply circuit is used to provide the use power supply to the power switching circuit; the power switching circuit is used to use the use power supply and the switching power supply to perform switching processing to obtain a changed voltage, and transmit the changed voltage to the timbre changing circuit; the timbre changing circuit is used to use the received changed voltage to change the timbre of the initial audio data to obtain target audio data, and send the target audio data to the speaker device; the speaker device is used to play the target audio data.

2. The device according to claim 1, characterized in that The timbre changing circuit includes a first interface, a second interface, a dual potentiometer, a first timbre changing circuit, a first amplifier circuit, a second timbre changing circuit, and a second amplifier circuit; the first interface is connected to the input device and also to the dual potentiometer; the dual potentiometer is also connected to the first timbre changing circuit and the second timbre changing circuit; the first timbre changing circuit is also connected to the first amplifier circuit, which is also connected to the second interface; the second timbre changing circuit is also connected to the second amplifier circuit, which is also connected to the second interface; the first amplifier circuit is also connected to the second amplifier circuit; and the second interface is also connected to the speaker device.

3. The device according to claim 2, characterized in that The first tone changing circuit includes a first resistor, a first capacitor, a second resistor, a first electron tube, a second capacitor, a third resistor, a fourth resistor, and a third capacitor. The first end of the first resistor is connected to the power switching circuit, the second end of the first resistor is connected to the positive electrode of the first capacitor and the first end of the second resistor. The second end of the second resistor is connected to the first and second pins of the first electron tube and the first amplifier circuit. The third pin of the first electron tube is connected to the second end of the third resistor, the fourth pin of the first electron tube is connected to the positive electrode of the second capacitor and the first end of the third resistor, and the fifth pin of the first electron tube is connected to the second end of the fourth resistor and the first end of the third capacitor. The negative electrode of the second capacitor is connected to the second pin of the dual potentiometer.

4. The device according to claim 3, characterized in that The first amplifier circuit includes a fourth capacitor, a first amplifier, a fifth capacitor, a fifth resistor, a sixth resistor, a seventh resistor, a sixth capacitor, and a seventh capacitor; the first end of the fourth capacitor is connected to the power switching circuit and the eighth pin of the first amplifier; the first pin of the first amplifier is connected to the second end of the sixth resistor and the positive electrode of the fifth capacitor, the second pin of the first amplifier is connected to the first end of the sixth resistor and the first end of the seventh resistor, and the third pin of the first amplifier is connected to the first and second pins of the first electron tube; the negative electrode of the fifth capacitor is connected to the first end of the fifth resistor and the first pin of the second interface; the second end of the fifth resistor is connected to the first end of the sixth capacitor, the second end of the sixth capacitor is connected to the negative electrode of the seventh capacitor and the third pin of the second interface; and the second end of the seventh resistor is connected to the positive electrode of the seventh capacitor.

5. The device according to claim 4, characterized in that The second tone changing circuit includes an eighth resistor, an eighth capacitor, a ninth resistor, a second electron tube, a ninth capacitor, a tenth resistor, an eleventh resistor, and a tenth capacitor. A first end of the eighth resistor is connected to the power switching circuit, a second end of the eighth resistor is connected to the positive electrode of the eighth capacitor and the first end of the ninth resistor, a second end of the ninth resistor is connected to the first and second pins of the second electron tube, and the second amplifier circuit, a third pin of the second electron tube is connected to the second end of the tenth resistor, a fourth pin of the second electron tube is connected to the positive electrode of the ninth capacitor and the first end of the tenth resistor, a fifth pin of the second electron tube is connected to the second end of the eleventh resistor and the first end of the tenth capacitor, and a negative electrode of the ninth capacitor is connected to the fifth pin of the dual potentiometer.

6. The device according to claim 5, characterized in that The second amplifier circuit includes an eleventh capacitor, a twelfth resistor, a twelfth capacitor, a thirteenth resistor, a fourteenth resistor and a thirteenth capacitor; the negative electrode of the eleventh capacitor is connected to the first amplifier circuit and the first end of the twelfth capacitor; the positive electrode of the eleventh capacitor is connected to the first end of the twelfth resistor; the second end of the twelfth resistor is connected to the first end of the thirteenth resistor and the sixth pin of the first amplifier; the fifth pin of the first amplifier is connected to the first and second pins of the first electron tube, and the seventh pin of the first amplifier is connected to the second end of the thirteenth resistor and the positive electrode of the thirteenth capacitor; the negative electrode of the thirteenth capacitor is connected to the second end of the fourteenth resistor and the second pin of the second interface; and the first end of the fourteenth resistor is connected to the second end of the twelfth capacitor.

7. The device according to claim 6, characterized in that The timbre changing circuit further includes a fifteenth resistor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth resistor, a sixteenth capacitor, and a seventeenth capacitor; a first end of the fifteenth resistor is connected to the power switching circuit, the positive electrode of the fourteenth capacitor, and the first end of the fifteenth capacitor, and a second end of the fifteenth resistor is connected to the first end of the sixteenth resistor, the negative electrode of the fourteenth capacitor, and the second end of the fifteenth capacitor; a first end of the sixteenth resistor is also connected to the positive electrode of the sixteenth capacitor and the first end of the seventeenth capacitor, and a second end of the sixteenth resistor is connected to the negative electrode of the sixteenth capacitor and the second end of the seventeenth capacitor; the negative electrode of the fourteenth capacitor is connected to the positive electrode of the sixteenth capacitor; and the second end of the fifteenth capacitor and the first end of the seventeenth capacitor are both connected to the first amplifier circuit and the second amplifier circuit.

8. The device according to claim 1, characterized in that The power switching circuit includes an eighteenth capacitor, a first inductor, a boost chip, a first diode, a seventeenth resistor, a nineteenth capacitor, a twentieth capacitor, an eighteenth resistor, a nineteenth resistor, a switch chip, a twenty-first capacitor, and a first switch. The first end of the eighteenth capacitor is connected to the power circuit, the fourth and fifth pins of the boost chip, and the first end of the first inductor. The first pin of the boost chip is connected to the second end of the first inductor and the anode of the first diode. The third pin of the boost chip is connected to the first end of the eighteenth resistor, the first end of the nineteenth resistor, and the second end of the seventeenth resistor. The cathode of the first diode is connected to the first end of the seventeenth resistor, the first end of the nineteenth capacitor, the first end of the twentieth capacitor, and the tone changing circuit. The second end of the nineteenth resistor is connected to the first pin of the switch chip. The fourth pin of the switch chip is connected to the first pin of the first switch, and the second pin of the first switch is connected to the switching power supply. The fifth pin of the switch chip is connected to the power circuit and the first end of the twenty-first capacitor.

9. The device according to claim 1, characterized in that The power supply circuit includes a charging interface, a twenty-second capacitor, a twentieth resistor, a twenty-first resistor, a charging management chip, a first light-emitting diode, a second light-emitting diode, a twenty-third capacitor, a battery and a twenty-second resistor; the second pin of the charging interface is connected to the first end of the twenty-second capacitor, the first end of the twenty-second resistor, the first end of the twenty-first resistor and the fourth and eighth pins of the charging management chip; the second end of the twentieth resistor is connected to the positive electrode of the first light-emitting diode, and the negative electrode of the first light-emitting diode is connected to the sixth pin of the charging management chip; the second end of the twenty-first resistor is connected to the positive electrode of the second light-emitting diode, and the negative electrode of the second light-emitting diode is connected to the seventh pin of the charging management chip; the fifth pin of the charging management chip is connected to the first end of the twenty-third capacitor and the first pin of the battery; the second end of the twenty-third capacitor is connected to the first and ninth pins of the charging management chip and the second pin of the battery; the second pin of the charging management chip is connected to the first end of the twenty-second resistor.

10. The device according to claim 1, characterized in that The voltage provided corresponding to the voltage change is 17V to 21V.

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