CN112788476A - Sound effect switching circuit, equipment and system - Google Patents

Abstract

A sound effect switching circuit, equipment and a system comprise a man-machine interaction component, an amplifying circuit and a control component. The man-machine interaction component outputs a sound effect switching signal to the control component according to the control instruction, the amplifying circuit outputs an amplified audio signal to the control component after receiving and amplifying the initial audio signal, the control component correspondingly controls and adjusts the characteristic parameters of the amplified audio signal according to the sound effect switching signal, and outputs an optimized audio signal to the audio playing equipment, so that the sound effect of the initial audio signal is changed. The sound effect switching circuit, the sound effect switching equipment and the sound effect switching system are used for outputting the optimized sound signal with the target sound effect to the sound playing equipment after processing the initial sound signal output by the accessed sound output equipment, are generally used for various electronic equipment such as a notebook computer, a tablet personal computer, a smart phone, a smart watch, smart glasses and the like, can process the sound signal under each medium scene, and are high in user experience degree, wide in application range and high in practicability.

Description

Sound effect switching circuit, equipment and system

Technical Field

The invention belongs to the technical field of audio processing, and particularly relates to a sound effect switching circuit, equipment and system.

Background

With the improvement of living standards and the change of working and living styles of people, electronic equipment types owned by people are more and more, such as a notebook computer, a tablet, a smart phone, a smart watch, smart glasses and the like, and even articles such as a refrigerator, a closestool, a mirror, a vacuum cup and the like are endowed with functions of intelligent communication, video entertainment, broadcast listening and music; people are increasingly using electronic devices for activities such as voice conversations, video conferences, watching programs, listening to broadcasts, and enjoying music. However, when a user uses one electronic device to perform any one of the above activities, the received audio signal is only an un-moistened original sound, and a few electronic devices (such as mobile phones) can output a part of audio signals after performing audio switching processing on the part of audio signals through some music APPs or some audio software, but only a part of specific audio signals can be processed, and the limitation is large; and the electronic equipment does not have the function of sound effect switching, so that the user experience is low.

Therefore, the traditional sound effect switching technology can only carry out sound effect switching processing on part of specific audio signals, limitation is large, the electronic equipment does not have the function of sound effect switching, and user experience is low.

Disclosure of Invention

In view of this, embodiments of the present invention provide an audio switching circuit, an audio switching device, and an audio switching system, which are used to solve the problems of the conventional audio switching technology that the limitation is large due to the fact that only part of specific audio signals can be subjected to audio switching processing, and the user experience is low due to the fact that the electronic device itself does not have the audio switching function.

A first aspect of an embodiment of the present invention provides a sound effect switching circuit, including:

the human-computer interaction component is configured to output a sound effect switching signal according to the control instruction;

the amplifying circuit is connected with the audio output device and is configured to receive and amplify the initial audio signal output by the audio output device and output the amplified audio signal; and

and the control component is connected with the amplifying circuit, the human-computer interaction component and the audio playing equipment, is configured to receive the sound effect switching signal and the amplified audio signal, correspondingly controls and adjusts the characteristic parameters of the amplified audio signal according to the sound effect switching signal, and outputs an optimized audio signal to the audio playing equipment for playing so as to change the sound effect of the initial audio signal.

A second aspect of an embodiment of the present invention provides a sound effect switching apparatus, including:

the sound effect switching circuit; and

an insulating housing configured to enclose the sound effect switching circuit.

A third aspect of an embodiment of the present invention provides a sound effect switching system, including:

the sound effect switching circuit;

the audio output device is connected with the sound effect switching circuit and is configured to output an initial audio signal; and

and the audio playing equipment is connected with the sound effect switching circuit and is configured to receive and play the optimized audio signal.

The invention provides a sound effect switching circuit, a device and a system, wherein a man-machine interaction component receives a control instruction and correspondingly outputs a sound effect switching signal, an amplifying circuit receives and amplifies an initial audio signal, the control component switches the sound effect of the amplified audio signal according to the sound effect switching signal, so as to obtain an optimized audio signal and output the optimized audio signal to audio playing equipment, and the audio switching circuit, the equipment and the system, after processing the initial audio signal output by the accessed audio output equipment, outputting an optimized audio signal with a target sound effect to the audio playing equipment, wherein the optimized audio signal is generally used for various electronic equipment such as notebook computers, flat panels, smart phones, smart watches, smart glasses and the like, the audio signal processing method can process audio signals of various scenes such as voice call, video conference, program watching or broadcasting listening and the like, and has the advantages of wide application range and strong practicability; the problem of traditional sound effect switching technique exist because can only carry out the sound effect switching to some audio signal and lead to the limitation big to because electronic equipment does not possess the function that the sound effect switches itself and lead to user experience low is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a module of a sound effect switching circuit according to a first aspect of the present invention;

FIG. 2 is a schematic diagram of an exemplary circuit for controlling components of the sound effect switching circuit shown in FIG. 1;

FIG. 3 is a schematic block diagram of a human-computer interaction module in the sound effect switching circuit shown in FIG. 1;

FIG. 4 is a schematic structural diagram of another module of the human-computer interaction component in the sound effect switching circuit shown in FIG. 1;

FIG. 5 is a schematic circuit diagram of the human-computer interaction assembly shown in FIG. 3;

FIG. 6 is a schematic circuit diagram of the human-computer interaction assembly shown in FIG. 4;

FIG. 7 is a schematic diagram of an exemplary circuit of an amplifying circuit in the sound effect switching circuit shown in FIG. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a schematic block diagram of an audio switching circuit according to a first aspect of the present invention is shown, for convenience of description, only the relevant portions of the embodiment are shown, and the following details are described:

a sound effect switching circuit comprises a man-machine interaction component 10, an amplifying circuit 20 and a control component 30.

The human-computer interaction component 10 is connected with the control component 30, the audio output device 100 is connected with the amplifying circuit 20, the amplifying circuit 20 is connected with the control component 30, and the control component 30 is connected with the audio playing device 200.

The human-computer interaction assembly 10 is configured to output an audio effect switching signal according to the control instruction.

Specifically, the control instruction is output by the user. The control instruction comprises a sound effect switching instruction; in other optional embodiments, the control instructions further comprise volume control instructions, play control instructions, and mute control instructions.

The amplification circuit 20 is configured to receive and amplify an initial audio signal output by the audio output device 100, and output an amplified audio signal.

Specifically, the initial audio signal includes an original sound signal and/or a digital signal, and in some application scenes such as voice call, video conference and the like, the initial audio signal only has the original sound signal, and in other application scenes such as watching programs, listening to music/broadcasting and the like, the initial audio signal has both the original sound signal and the digital signal such as accompaniment sound, background sound and the like; in the present embodiment, the amplifying circuit 20 is used only to amplify the cause signal in the original audio signal without processing the digital signal. The amplifying circuit 20 has amplifying and filtering functions to achieve the purposes of signal enhancement and noise reduction.

Optionally, the audio output device 100 is connected to the control component 30 through a USB interface to output digital signals.

The control component 30 is configured to receive the sound effect switching signal and the amplified audio signal, correspondingly control and adjust the characteristic parameter of the amplified audio signal according to the sound effect switching signal, and output the optimized audio signal to the audio playing device 200 to change the sound effect of the initial audio signal.

Specifically, the characteristic parameter includes a frequency.

The frequency range of sound which can be detected by human ears is between 20Hz and 20kHz, and the frequency range of sound which can be emitted by human beings is between 80Hz and 12 kHz. Sounds/audios of different frequency bands are perceived by people, so the definition of sound effect is: the perception of the human ear to sound/audio signals of various frequency bands. For example, the 60 Hz-250 Hz audio signal is a low-frequency structure of music, the audio signal can be full when the section is lifted, and the sound can be thin when the frequency band is attenuated; for another example, the audio signal of 4kHz to 5kHz is a frequency band affecting the presence, and by properly increasing the frequency band, the human senses that the sound source is closer to the listener, and by properly attenuating the frequency band, the human senses that the sound source is farther from the listener.

In this embodiment, the control component 30 adjusts the frequency of the amplified audio signal, so as to achieve the purpose of changing the sound effect of the audio. The sound effects that can be switched include, but are not limited to, acoustic sound, subwoofer, panoramic surround, beautiful human voice, vinyl, retro, open sound, floating human voice, and 3D rotation.

Optionally, the control component 30 is implemented by a microcontroller; specifically, the microcontroller is an audio conditioning chip U1.

The audio switching circuit provided in this embodiment is connected to the audio output device 100 and the audio playing device 200, and is configured to output an optimized audio signal to the audio playing device 200 after performing audio switching on an initial audio signal output by the audio output device 100, so that the audio playing device 200 plays the optimized audio signal of a target audio. The audio output device 100 includes, but is not limited to, a radio, a laptop, a tablet, a smart phone, a smart watch, and smart glasses, and even a refrigerator, a toilet, a mirror, a vacuum cup, etc. having an intelligent function and capable of outputting audio may be used as the audio output device 100. The audio playing device 200 includes, but is not limited to, a sound box, an earphone, a recording pen, a notebook computer, a tablet, a smart phone, a smart watch, and smart glasses, and even an object having an audio playing function, such as a refrigerator, a toilet, a mirror, and a heat-insulating cup, which has an intelligent function, may also be used as the audio playing device 200.

It should be noted that, for an apparatus capable of performing both audio output and audio playback, the apparatus can be used as both the audio output apparatus 100 and the audio playback apparatus 200.

In the sound effect switching circuit, device and system provided by this embodiment, the human-computer interaction component 10 receives a control instruction and correspondingly outputs a sound effect switching signal, the amplifying circuit 20 receives and amplifies an initial audio signal, and the control component 30 performs sound effect switching on the amplified audio signal according to the sound effect switching signal to obtain an optimized audio signal and outputs the optimized audio signal to the audio playing device 200, the sound effect switching circuit, device and system processes the initial audio signal output by the accessed audio output device 100 and outputs the optimized audio signal with a target sound effect to the audio playing device 200, and the sound effect switching circuit, device and system are generally used in various electronic devices such as notebook computers, tablet computers, smart phones, smart watches, smart glasses and the like, can process audio signals of various scenes such as voice call, video conference, program watching, broadcast listening and the like, and have a wide application range, The practicability is strong; the problem of traditional audio switching technique because carry out the audio switching to some audio signal through some music APP or some audio software and handle and the limitation that exists is big, can't be general in all kinds of electronic equipment, lead to that user's viscosity is low, user experience is low is solved.

Fig. 2 is a schematic circuit diagram of an exemplary circuit of the control component 30 in the sound effect switching circuit shown in fig. 1, which only shows the relevant parts of the present embodiment for convenience of description, and the following details are described below:

in an alternative embodiment, the control component 30 is implemented using the audio conditioning chip U1 and its peripheral circuits.

The command receiving terminal (ADC0) of the audio adjusting chip U1 is connected to the human-computer interaction component 10, the first audio signal receiving terminal (USB _ DP) and the second audio signal receiving terminal (USB _ DM) of the audio adjusting chip U1 are connected to the audio output device 100, the third audio signal receiving terminal (RMIC _ IN) of the audio adjusting chip U1 is connected to the amplifying circuit 20, and the first output terminal (LOUT) and the second output terminal (ROUT) of the audio adjusting chip U1 are connected to the audio playing device 200.

Specifically, the first audio signal receiver (USB _ DP) and the second audio signal receiver (USB _ DM) of the audio adjusting chip U1 are configured to receive digital signals, where the digital signals include but are not limited to accompaniment tones and background tones; the third audio signal receiving terminal (RMIC _ IN) of the audio adjusting chip U1 is configured to receive the amplified audio signal, and after the original audio signal IN the original audio signal is amplified by the amplification processing circuit, the amplified audio signal is formed and output to the audio adjusting chip U1.

Please refer to fig. 3, which is a schematic structural diagram of a module of the human-computer interaction component 10 in the sound effect switching circuit shown in fig. 1, for convenience of description, only the parts related to the present embodiment are shown, and the detailed description is as follows:

in an alternative embodiment, the human-computer interaction assembly 10 comprises a sound effect control circuit 102 and a filter circuit 101.

The sound effect control circuit 102 is connected to the filter circuit 101, and the filter circuit 101 is connected to the control module 30.

The sound effect control circuit 102 is configured to operate after receiving the control instruction, and adjust the reference electric signal (AP _3V3) into the sound effect switching signal and output the same.

The filter circuit 101 is configured to receive the reference electrical signal, and filter the received signal and output the signal to the control component 30.

Specifically, after the sound effect control circuit 102 receives the control command, the reference electrical signal (AP _3V3) is adjusted to be the sound effect switching signal and output to the filter circuit 101, and the filter circuit 101 performs filtering processing and outputs to the control component 30.

As shown in fig. 5, optionally, the filter circuit 101 includes a resistor R127 and a capacitor C28. The first end of the resistor R127 is connected to a reference electrical signal (AP _3V3), the second end of the resistor R127 is connected to the first end of the capacitor C28, and the second end of the capacitor C28 is grounded; the capacitor C28 is connected in parallel between the command receiving terminal (ADC0) of the control module 30 and ground, and the sound effect switching signal must be filtered by a filter capacitor before being input to the command receiving terminal (ADC0), so as to avoid the control module 30 being damaged by the abnormal signal. The capacitor C28 is a filter capacitor for filtering out high-frequency interference signals.

As shown in fig. 5, optionally, the sound effect control circuit 102 includes a tenth resistor R133 and a control key MODE.

The movable end of the control key MODE is configured to be pressed by a user, the first fixed end of the control key MODE is connected to the first end of the tenth resistor R133, the second fixed end of the control key MODE is grounded, and the second end of the tenth resistor R133 is connected to the filter circuit 101, specifically, the first end of the capacitor C28.

Specifically, when the user presses the active end of the control key MODE, the tenth resistor R133 is connected to the circuit, so as to form a complete first power-on loop, that is, the first power-on loop formed by AP _3V3, the resistor R127, and the tenth resistor R133, where a signal in the first power-on loop is a sound effect switching signal.

Optionally, the voltage value of the reference electrical signal (AP _3V3) is 3.3V.

Please refer to fig. 4, which is a schematic structural diagram of another module of the human-computer interaction component 10 in the sound effect switching circuit shown in fig. 1, wherein for convenience of description, only the relevant parts of the embodiment are shown, and the following details are described below:

in an alternative embodiment, the human-computer interaction assembly 10 further includes a volume control circuit 103, a play control circuit 104, and a mute control circuit 105 in addition to the filtering current and sound effect control circuit 102.

The volume control circuit 103, the play control circuit 104, and the mute control circuit 105 are respectively connected to the filter circuit 101, and the filter circuit 101 is connected to the command receiving terminal (ADC0) of the control module 30.

The volume control circuit 103 is configured to operate upon receiving a volume instruction, adjust the reference electric signal to a volume control signal, and output the volume control signal to the filter circuit 101.

The playback control circuit 104 is configured to operate after receiving a playback instruction, adjust the reference electrical signal to a playback control signal, and output the playback control signal to the filter circuit 101.

The mute control circuit 105 is configured to operate upon receiving a mute instruction, adjust the reference electric signal to a mute control signal, and output the same to the filter circuit 101.

The filter circuit 101 is configured to access the reference electrical signal, and filter the received signal and output the filtered signal to the control component 30. Specifically, when the volume control circuit 103 receives a volume instruction, the filter circuit 101 filters the volume control signal and outputs the volume control signal to an instruction receiving end (ADC0) of the control module 30, and the control module 30 correspondingly adjusts the volume of the audio signal to be output to the audio playing device 200; when the play control circuit 104 receives the play instruction, the filter circuit 101 filters the play control signal and outputs the filtered play control signal to the instruction receiving terminal (ADC0) of the control module 30, and the control module 30 correspondingly outputs the audio signal to be output to the audio play device 200; when the mute control circuit 105 receives the volume command, the filter circuit 101 filters the mute control signal and outputs the filtered mute control signal to the command receiving terminal (ADC0) of the control module 30, and the control module 30 adjusts the volume of the audio signal to be output to the audio playback device 200 to 0 accordingly and outputs the adjusted audio signal.

As shown in fig. 6, the volume control circuit 103 optionally includes a resistor R125, a first volume control key UP, and a second volume control key DOWN.

The active end of the first volume control key UP and the active end of the second volume control key DOWN are configured to be pressed by a user, the first fixed end of the first volume control key UP is connected to the first end of the resistor R125, the second fixed end of the first volume control key UP is grounded, the first fixed end of the second volume control key DOWN is connected to the first end of the resistor R126, the second fixed end of the second volume control key DOWN is grounded, and the second end of the resistor R125 and the second end of the resistor R126 are both connected to the filter circuit 101, specifically, both connected to the first end of the capacitor C28.

Specifically, when the user presses the active end of the first volume control key UP, the resistor R125 is connected to the circuit, so as to form a complete second current-carrying loop, i.e., a second current-carrying loop formed by AP _3V 3-resistor R127-resistor R125-at this time, a signal in the second current-carrying loop is a volume control signal, and the volume control signal controls the volume to increase; when the user presses the active end of the second volume control key DOWN, the resistor R126 is connected to the circuit, thereby forming a complete third electrical connection loop, i.e., the third electrical connection loop formed by AP _3V3, the resistor R127, the resistor R126, and the ground, at this time, the signal in the third electrical connection loop is the volume control signal, and the volume control signal controls the volume to decrease.

As shown in fig. 6, optionally, the PLAY control circuit 104 includes a resistor R130 and a PLAY control button PLAY.

The active end of the PLAY control key PLAY is configured to be pressed by a user, a first fixed end of the PLAY control key PLAY is connected to a first end of the resistor R130, a second fixed end of the PLAY control key PLAY is grounded, and a second end of the resistor R130 is connected to the filter circuit 101, specifically, the first end of the capacitor C28.

Specifically, when the user presses the active end of the PLAY control button PLAY, the resistor R130 is connected to the circuit, so as to form a complete fourth electrical loop, that is, the fourth electrical loop formed by AP _3V3, the resistor R127, and the resistor R130, and at this time, the signal in the fourth electrical loop is the PLAY control signal.

As shown in fig. 6, the MUTE control circuit 105 optionally includes a resistor R131 and a MUTE control button MUTE.

The active end of the MUTE control key MUTE is configured to be pressed by a user, the first fixed end of the MUTE control key MUTE is connected to the first end of the resistor R131, the second fixed end of the MUTE control key MUTE is grounded, and the second end of the resistor R131 is connected to the filter circuit 101, specifically, the first end of the capacitor C28.

Specifically, when the user presses the active end of the MUTE control button MUTE, the resistor R131 is connected to the circuit, so as to form a complete fifth power-on loop, that is, the fifth power-on loop formed by AP _3V3, the resistor R127, and the resistor R131, and at this time, the signal in the fifth power-on loop is the MUTE control signal.

Specifically, the tenth resistor R133, the resistor R125, the resistor R126, the resistor R130, and the resistor R131 have different resistances.

Referring to fig. 7, an exemplary schematic circuit diagram of the amplifying circuit 20 in the sound effect switching circuit shown in fig. 1 is shown, and for convenience of description, only the parts related to the present embodiment are shown, and detailed as follows:

in an alternative embodiment, the amplifying circuit 20 includes a first resistor R48, a second resistor R47, a third resistor R5, a fourth resistor R2, a fifth resistor R52, a sixth resistor R51, a seventh resistor R23, an eighth resistor R38, a ninth resistor R50, a first capacitor C67, a second capacitor C30, a third capacitor C45, a fourth capacitor C11, a fifth capacitor C12, a sixth capacitor C78, a seventh capacitor C75, an eighth capacitor C83, a ninth capacitor C82, and a power amplifier U17.

The output end OUT of the power amplifier U17 is connected with the control component 30, and the first capacitor C67 and the first resistor R48 are both connected in series with the output end OUT of the power amplifier U17; a power supply end of the power amplifier U17 is connected to a first power supply signal USB5V, a first end of the second capacitor C30 and a first end of the third capacitor C45 are both connected to a power supply end of the power amplifier U17, and a second end of the second capacitor C30 and a second end of the third capacitor C45 are grounded; the first end of the second resistor R47, the first end of the third resistor R5, the first end of the fourth capacitor C11, the first end of the fifth capacitor C12, and the first end of the fourth resistor R2 are commonly connected to the second power supply signal VDD1/2, the second end of the fourth resistor R2 is connected to the first power supply signal USB5V, and the second end of the third resistor R5, the second end of the fourth capacitor C11, and the second end of the fifth capacitor C12 are grounded.

The second end of the second resistor R47 is connected to the non-inverting input terminal IN + of the power amplifier U17, the non-inverting input terminal IN + of the power amplifier U17 is connected to the first power supply signal USB5V, and the fifth resistor R52, the sixth capacitor C78 and the sixth resistor R51 are all connected IN series to the non-inverting input terminal IN + of the power amplifier U17; the seventh capacitor C75 and the eighth capacitor C83 are connected IN parallel between the non-inverting input terminal IN + of the power amplifier U17 and the ground; the inverting input end IN-of the power amplifier U17 is connected to the audio output device 100, and the seventh resistor R23 and the ninth capacitor C82 are connected IN series to the inverting input end IN-of the power amplifier U17; the eighth resistor R38 is connected between the inverting input IN-of the power amplifier U17 and the output OUT of the power amplifier U17; the ninth resistor R50 is connected IN parallel between the non-inverting input IN + of the power amplifier U17 and the inverting input IN-of the power amplifier U17.

Specifically, the output terminal OUT of the power amplifier U17 is connected to the third audio signal receiving terminal (RMIC _ IN) of the control component 30. The inverting input IN-of the power amplifier U17 is connected to the output of an audio output device (MIC 1).

A second aspect of the embodiments of the present invention provides an audio switching apparatus, including the above-mentioned audio switching circuit and an insulating housing configured to encapsulate the audio switching circuit.

A third aspect of the embodiment of the present invention provides a sound effect switching system, which includes the sound effect switching circuit, the audio output device 100, and the audio playing device 200.

The audio output device 100 is connected to the audio switching circuit, and the audio playing device 200 is connected to the audio switching circuit.

The audio output device 100 is configured to output an initial audio signal.

The audio playback device 200 is configured to receive and play back the optimized audio signal.

It should be noted that, in the sound effect switching system provided by the present invention, the audio output device 100 and the audio playing device 200 may be the same device or may be two different devices. For example, smart electronic devices such as a notebook computer, a tablet, a smart phone, a smart watch, and smart glasses have both an audio output function and an audio playing function, and thus can be used as the audio output device 100 and the audio playing device 200 in the audio switching system. In addition, for example, if a smart phone is used as the audio output device 100 and an earphone is used as the audio playing device 200, the audio output device 100 and the audio playing device 200 in the sound effect switching system are not the same device.

Optionally, the audio output device 100 includes a laptop, a tablet, a smartphone, a smartwatch, smartglasses, and a radio.

In summary, the embodiments of the present invention provide a sound effect switching circuit, a device, and a system, where the sound effect switching circuit is configured to output an optimized audio signal to an audio playing device after performing sound effect switching on an initial audio signal output by an audio output device, so that the audio playing device plays the optimized audio signal of a target sound effect, and solve the problems of a traditional sound effect switching technology that the limitation is large because only part of specific audio signals can be subjected to sound effect switching processing, and the user experience is low because an electronic device itself does not have a sound effect switching function. The audio output device includes, but is not limited to, a radio, a notebook computer, a tablet, a smart phone, a smart watch, and smart glasses, and even an article with an intelligent function, such as a refrigerator, a toilet, a mirror, a vacuum cup, which can output audio, can also be used as the audio output device. The audio playing device includes but is not limited to a sound box, an earphone, a recording pen, a notebook computer, a tablet, a smart phone, a smart watch, and smart glasses, and even an object having an audio playing function, such as a refrigerator, a toilet, a mirror, and a heat-insulating cup, which has an intelligent function, can also be used as the audio playing device.

Various embodiments are described herein for various circuits, devices, and systems. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An audio switching circuit, comprising:

the human-computer interaction component is configured to output a sound effect switching signal according to the control instruction;

the amplifying circuit is connected with the audio output device and is configured to receive and amplify the initial audio signal output by the audio output device and output the amplified audio signal; and

and the control component is connected with the amplifying circuit, the human-computer interaction component and the audio playing equipment, is configured to receive the sound effect switching signal and the amplified audio signal, correspondingly controls and adjusts the characteristic parameters of the amplified audio signal according to the sound effect switching signal, and outputs an optimized audio signal to the audio playing equipment for playing so as to change the sound effect of the initial audio signal.

2. The sound effect switching circuit of claim 1 wherein the amplification circuit comprises:

the power amplifier comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor and a power amplifier;

the output end of the power amplifier is connected with the control component, and the first capacitor and the first resistor are connected to the output end of the power amplifier in series; a power supply end of the power amplifier is connected with a first power supply signal, a first end of the second capacitor and a first end of the third capacitor are both connected to the power supply end of the power amplifier, and a second end of the second capacitor and a second end of the third capacitor are grounded; a first end of the second resistor, a first end of the third resistor, a first end of the fourth capacitor, a first end of the fifth capacitor and a first end of the fourth resistor are connected in common and connected to a second power supply signal, a second end of the fourth resistor is connected to the first power supply signal, and a second end of the third resistor, a second end of the fourth capacitor and a second end of the fifth capacitor are grounded;

a second end of the second resistor is connected to a positive input end of the power amplifier, the positive input end of the power amplifier is connected to the first power supply signal, and the fifth resistor, the sixth capacitor and the sixth resistor are all connected in series to the positive input end of the power amplifier; the seventh capacitor and the eighth capacitor are connected in parallel between the non-inverting input end of the power amplifier and the ground; the inverting input end of the power amplifier is connected to the audio output device, and the seventh resistor and the ninth capacitor are connected in series to the inverting input end of the power amplifier; the eighth resistor is connected between the inverting input end of the power amplifier and the output end of the power amplifier; the ninth resistor is connected in parallel between the non-inverting input terminal of the power amplifier and the inverting input terminal of the power amplifier.

3. The sound-effect switching circuit of claim 1 wherein the human-computer interaction component comprises:

the sound effect control circuit is configured to work after receiving the control instruction, adjust the reference electric signal into the sound effect switching signal and output the sound effect switching signal; and

and the filter circuit is connected with the sound effect control circuit and the control component, is configured to access the reference electric signal, and outputs the received signal to the control component after filtering processing.

4. The sound-effect switching circuit of claim 3 wherein the human-computer interaction component further comprises:

the volume control circuit is connected with the filter circuit and is configured to work after receiving a volume instruction, adjust the reference electric signal into a volume control signal and output the volume control signal to the filter circuit;

the play control circuit is connected with the filter circuit and is configured to work after receiving a play instruction, adjust the reference electric signal into a play control signal and output the play control signal to the filter circuit; and

and the mute control circuit is connected with the filter circuit, is configured to work after receiving a mute instruction, adjusts the reference electric signal into a mute control signal and outputs the mute control signal to the filter circuit.

5. The sound-effect switching circuit according to claim 3, wherein the sound-effect control circuit comprises:

a tenth resistor and a control key;

the movable end of the control key is configured to be pressed by a user, the first fixed end of the control key is connected with the first end of the tenth resistor, the second fixed end of the control key is grounded, and the second end of the tenth resistor is connected with the filter circuit.

6. The sound effect switching circuit of claim 1 wherein the initial audio signal comprises an original audio signal and/or a digital signal.

7. The sound effect switching circuit of claim 6 wherein the control module is implemented using an audio conditioning chip and its peripheral circuits;

the instruction receiving end of the audio adjusting chip is connected with the human-computer interaction assembly, the first audio signal receiving end and the second audio signal receiving end of the audio adjusting chip are connected with the audio output device, the third audio signal receiving end of the audio adjusting chip is connected with the amplifying circuit, and the first output end and the second output end of the audio adjusting chip are connected with the audio playing device.

8. An audio effect switching apparatus, comprising:

the sound effect switching circuit of any one of claims 1 to 7; and

an insulating housing configured to enclose the sound effect switching circuit.

9. A sound effect switching system, comprising:

the sound effect switching circuit of any one of claims 1 to 7;

the audio output device is connected with the sound effect switching circuit and is configured to output an initial audio signal; and

and the audio playing equipment is connected with the sound effect switching circuit and is configured to receive and play the optimized audio signal.

10. The sound effect switching system of claim 9 wherein the audio output devices include a laptop, a tablet, a smartphone, a smartwatch, smartglasses, and a radio.

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