Audio processing device and sound equipment

Abstract

The utility model discloses an audio processing device and sound equipment, and the audio processing device comprises an analog signal interface which is used for receiving an analog audio signal; the first signal conversion module is connected with the analog signal interface and is used for converting the analog audio signal into a digital detection signal; the second signal conversion module is connected with the analog signal interface and used for converting the analog audio signal into a digital output signal, and the power of the digital output signal is larger than that of the digital detection signal; the third signal conversion module is connected with the second signal conversion module and is used for converting the digital output signal into an analog output signal; the first signal conversion module, the second signal conversion module and the third signal conversion module are electrically connected with the control module; the audio processing device can reduce the power of the digital detection signal output to the control module and reduce the overall power consumption of the audio processing device.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and in particular to an audio processing device and an audio speaker. Background Technology

[0002] When playing analog audio signals through an audio processing device, the quality of the analog signal needs to be detected in real time because analog signals are prone to distortion and noise.

[0003] Generally speaking, in order to ensure that the speaker and the digital-to-analog converter inside the speaker can have good playback performance, the analog-to-digital converter needs to be converted into a higher-power digital signal by a power amplifier before being output to the digital-to-analog converter. In existing audio processing devices, the control components often sample the analog signal from the digital signal output by the analog-to-digital converter. However, the analog-to-digital converter has a large power, which increases the power loss in the detection process. Excessively high-power digital signals can also easily damage the control components. Utility Model Content

[0004] The following is an overview of the subject matter described in detail herein, and this overview is not intended to limit the scope of the claims.

[0005] This invention proposes an audio processing device and a speaker that can reduce the power of the digital detection signal output to the control module and reduce the overall power consumption of the audio processing device.

[0006] The first aspect of this utility model provides an audio processing device, comprising: an analog signal interface for receiving analog audio signals; a first signal conversion module connected to the analog signal interface, the first signal conversion module being used to convert the analog audio signals into digital detection signals; a second signal conversion module connected to the analog signal interface, the second signal conversion module being used to convert the analog audio signals into digital output signals, the power of the digital output signals being greater than that of the digital detection signals; a third signal conversion module connected to the second signal conversion module, the third signal conversion module being used to convert the digital output signals into analog output signals and output the analog output signals to a speaker; and a control module, the first signal conversion module, the second signal conversion module, and the third signal conversion module being electrically connected to the control module, the control module being used to detect the digital detection signals, and the control module being used to control the operating state of the second signal conversion module.

[0007] In some embodiments, the first signal conversion module is provided with a first positive differential input terminal and a first negative differential input terminal. The first positive differential input terminal is provided with a first capacitor and a second capacitor, and the first negative differential input terminal is provided with a first resistor and a third capacitor. The analog signal interface, the first capacitor, the second capacitor and the first positive differential input terminal are connected in sequence, and the analog signal interface, the first resistor and the third capacitor and the first negative differential input terminal are connected in sequence.

[0008] In some embodiments, the first signal conversion module is provided with a modulation signal output port, the control module is provided with a detection signal receiving port, the modulation signal output port is connected to the base of the first transistor through a first diode, the emitter of the first transistor is grounded, and the power supply and the detection signal receiving port are simultaneously connected to the collector of the first transistor.

[0009] In some embodiments, a digital signal interface and a digital detection module are further included. The digital signal interface is used to receive digital audio signals and is connected to the digital detection module. The control module is electrically connected to both the digital signal interface and the digital detection module. The digital detection module is used to identify and detect the digital audio signals.

[0010] In some embodiments, the digital signal interface includes a USB interface and a WiFi interface.

[0011] In some embodiments, the audio processing device further includes a host computer, which is connected to the control module via a 485 communication module, and is used to input control commands to the control module.

[0012] In some embodiments, a display screen is further included, which is electrically connected to the control module and is used to display the operating status of the control module.

[0013] To achieve the above objectives, a second aspect of this utility model also provides an audio system, which includes the audio processing device as described in the first aspect.

[0014] The embodiments of this application include at least the following beneficial effects: In an audio processing device that is simultaneously provided with an analog signal interface and a digital signal interface, after an analog audio signal is input through the analog signal interface, during the process of the second signal conversion module converting the analog audio signal into a digital output signal, the second signal conversion module and the analog signal interface need to amplify the power of the analog audio signal so that it has sufficient power to drive the third signal conversion module and the external speaker, thereby producing sufficient volume; by providing a first signal conversion module, the first signal conversion module converts the analog audio signal into a digital detection signal, and the digital detection signal is input to the control module. The digital detection signal is used to provide the control module with a detection sample of the analog audio signal. The control module detects the analog audio signal according to the digital detection signal. When the quality of the digital detection signal meets the preset requirements, the second signal conversion module converts the analog audio signal into a digital output signal, thereby improving the quality of audio playback. Unlike the second signal conversion module, the first signal conversion module does not need to increase the power of the digital detection signal, thereby reducing the overall power consumption of the audio processing device.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0017] Figure 1 An optional circuit diagram of the audio processing device provided in an embodiment of this utility model;

[0018] Figure 2 An optional system block diagram of the audio processing apparatus provided in the embodiments of this utility model;

[0019] Figure 3 An optional system block diagram of the host computer provided in an embodiment of this utility model. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Currently, in order to ensure that the speakers and the digital-to-analog converters inside the speakers can have good playback performance, the analog-to-digital converters need to be converted into higher-power digital signals by power amplifiers before being output to the digital-to-analog converters. In existing audio processing devices, the control components often sample the analog signals from the digital signals output by the analog-to-digital converters. However, the analog-to-digital converters have high power, which increases the power loss in the detection process. Excessively high-power digital signals can also easily damage the control components.

[0025] To address the issue of excessively high power in the digital signals acquired by the control components, this invention provides an audio processing device and a speaker. The audio processing device includes: an analog signal interface for receiving analog audio signals; a first signal conversion module connected to the analog signal interface, used to convert the analog audio signals into digital detection signals; a second signal conversion module connected to the analog signal interface, used to convert the analog audio signals into digital output signals, the power of which is greater than that of the digital detection signals; a third signal conversion module connected to the second signal conversion module, used to convert the digital output signals into analog output signals and output the analog output signals to the speaker; and a control module, wherein the first, second, and third signal conversion modules are electrically connected to the control module, the control module is used to detect the digital detection signals, and also to control the operating state of the second signal conversion modules. According to the solution provided by this invention, the power of the digital detection signals output to the control module can be reduced, thereby lowering the overall power consumption of the audio processing device.

[0026] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 2 This utility model provides an audio processing device, including:

[0028] Analog signal interface 110 is used to receive analog audio signals;

[0029] The first signal conversion module 200 is connected to the analog signal interface 110, and the first signal conversion module 200 is used to convert the analog audio signal into a digital detection signal;

[0030] The second signal conversion module 300 is connected to the analog signal interface 110. The second signal conversion module 300 is used to convert the analog audio signal into a digital output signal. The power of the digital output signal is greater than that of the digital detection signal.

[0031] The third signal conversion module 400 is connected to the second signal conversion module 300. The third signal conversion module 400 is used to convert the digital output signal into an analog output signal and output the analog output signal to the speaker.

[0032] The control module 500 includes the first signal conversion module 200, the second signal conversion module 300, and the third signal conversion module 400, which are electrically connected to the control module 500. The control module 500 is used to detect the digital detection signal and also to control the working state of the second signal conversion module 300.

[0033] Understandably, in an audio processing device that simultaneously has an analog signal interface 110 and a digital signal interface 120, after an analog audio signal is input through the analog signal interface 110, the second signal conversion module 300 converts the analog audio signal into a digital output signal. During this process, the second signal conversion module 300 and the analog signal interface 110 need to amplify the power of the analog audio signal to provide sufficient power to drive the third signal conversion module 400 and the external speaker, thereby generating sufficient volume. By setting up a first signal conversion module 200, the first signal conversion module 200 converts the analog audio signal into a digital detection signal. The digital detection signal is input to the control module 500 and is used to provide the control module 500 with a detection sample of the analog audio signal. The control module 500 detects the analog audio signal based on the digital detection signal. When the quality of the digital detection signal meets the preset requirements, the second signal conversion module 300 converts the analog audio signal back into a digital output signal, thereby improving the audio playback quality. Unlike the second signal conversion module 300, the first signal conversion module 200 does not need to increase the power of the digital detection signal, thus reducing the overall power consumption of the audio processing device.

[0034] Specifically, the second signal conversion module 300 is provided with a second positive differential input terminal AIN1P and a second negative differential input terminal AIN1N. The second positive differential input terminal AIN1P is used to receive the positive differential signal in the analog audio signal, and the second negative differential input terminal AIN1N is used to receive the negative differential signal in the analog audio signal. A first power amplifier PA1 is provided on the second positive differential input terminal AIN1P, and a second power amplifier PA2 is provided on the second negative differential input terminal AIN1N. The input terminal of the first power amplifier PA1 is connected to the analog signal interface 110, and the output terminal of the first power amplifier PA1 is connected to the second positive differential input terminal AIN1P. The input terminal of the second power amplifier PA2 is connected to the analog signal interface 110, and the output terminal of the second power amplifier PA2 is connected to the second negative differential input terminal AIN1N.

[0035] In one specific implementation, the control module 500 detects real-time data such as operating frequency, effective amplitude, sampling rate, and baud rate for the digital detection signal.

[0036] Additionally, refer to Figure 1As shown, in some embodiments of this utility model, the first signal conversion module 200 is provided with a first positive differential input terminal RIN+ and a first negative differential input terminal RIN-. The first positive differential input terminal RIN+ is provided with a first capacitor C1 and a second capacitor C2, and the first negative differential input terminal RIN- is provided with a first resistor R1 and a third capacitor C3. The analog signal interface 110, the first capacitor C1, the second capacitor C2 and the first positive differential input terminal RIN+ are connected in sequence, and the analog signal interface 110, the first resistor R1, the third capacitor C3 and the first negative differential input terminal RIN- are connected in sequence.

[0037] Understandably, when an analog audio signal is input to the analog signal interface 110, the first capacitor C1 and the second capacitor C2 sequentially flip the polarity of the analog audio signal. The first positive differential input terminal RIN+ receives an analog audio signal with positive polarity. The third capacitor C3 flips the analog audio signal only once, and the first negative differential input terminal RIN- receives an analog audio signal with negative polarity. The first resistor R1 can divide the voltage of the third capacitor C3, thereby preventing the analog audio signal voltage from being too high and causing the capacitor to break down.

[0038] The analog signal interface 110 includes a male XLR connector and a female XLR connector. A double-pole double-throw (DPDT) switch is provided between the male XLR connector and the female XLR connector and the first capacitor C1 and the first resistor R1. When the DPDT switch is switched to one end, the male XLR connector is simultaneously connected to the first capacitor C1 and the first resistor R1. When the DPDT switch is switched to the other end, the female XLR connector is simultaneously connected to the first capacitor C1 and the first resistor R1.

[0039] Additionally, refer to again Figure 1 As shown, in some embodiments of this utility model, the first signal conversion module 200 is provided with a modulation signal output port out. The modulation signal output port out is connected to the base of the first transistor Q2 through the first diode Q1. The emitter of the first transistor Q2 is grounded. The power supply and the control module 500 are simultaneously connected to the collector of the first transistor Q2.

[0040] Understandably, the first diode Q1 acts as a current isolation and signal switch DPDT, adjusting the output of the signal output port OUT to output a digital detection signal. The voltage of the digital detection signal is either positive or zero. When the voltage of the digital detection signal is greater than zero, the first transistor Q2 is turned on, and the voltage value of the detection signal receiving port PC7 is zero. When the voltage of the digital detection signal is equal to zero, the emitter and collector of the first transistor Q2 are disconnected, and the voltage of the detection signal receiving port PC7 is equal to the power supply voltage. In the control module 500, the digital detection signal can be obtained by flipping the voltage information received by the detection signal receiving port PC7.

[0041] Additionally, refer to Figure 2 As shown, in some embodiments of the present invention, the audio processing device further includes a digital signal interface 120 and a digital detection module 130. The digital signal interface 120 is connected to the digital detection module 130. The control module 500 is electrically connected to the digital signal interface 120 and the digital detection module 130 respectively. The digital detection module 130 is used to identify and detect the digital audio signal.

[0042] In some specific implementations, the digital signal interface 120 includes a USB interface and a WiFi interface.

[0043] The control module 500 can directly identify digital audio signals. When the audio processing device simultaneously receives digital audio signals and analog audio signals representing the same audio information, the control module 500 detects the quality of the digital detection signals corresponding to the digital audio signals and analog audio signals. If the quality of the digital audio signal is better, the digital audio signal is directly output to the third signal conversion module 400. If the quality of the digital detection signal is better, the control module 500 controls the second signal conversion module 300 to start, converting the analog audio signal into a higher-power digital output signal. The third signal conversion module 400 then converts the digital output signal back to an analog signal for playback through the speaker.

[0044] Additionally, refer to Figure 3 As shown, in some embodiments of the present invention, the audio processing device further includes a host computer 600, which is connected to the control module 500 via a 485 communication module 610. The host computer 600 is used to input control commands to the control module 500.

[0045] The host computer 600 can input control commands to the control module 500, which can then control the audio processing device to output a fixed type of audio signal.

[0046] The audio processing device may also include a display screen electrically connected to the control module 500, the display screen being used to show the currently used analog signal interface 110 or digital signal interface 120.

[0047] Similarly, the host computer 600 can also control other specific information output on the display screen, such as audio quality, audio waveform, and audio duration, through the control module 500.

[0048] In addition, this utility model also proposes an audio device, which includes the audio processing device in the above embodiments.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An audio processing device, characterized in that, include: Analog signal interface, used to receive analog audio signals; A first signal conversion module is connected to the analog signal interface, and the first signal conversion module is used to convert the analog audio signal into a digital detection signal; A second signal conversion module is connected to the analog signal interface. The second signal conversion module is used to convert the analog audio signal into a digital output signal. The power of the digital output signal is greater than that of the digital detection signal. A third signal conversion module is connected to the second signal conversion module. The third signal conversion module is used to convert the digital output signal into an analog output signal and output the analog output signal to the speaker. The control module includes the first signal conversion module, the second signal conversion module, and the third signal conversion module, which are electrically connected to the control module. The control module is used to detect the digital detection signal and also to control the working state of the second signal conversion module.

2. The audio processing apparatus according to claim 1, characterized in that, The first signal conversion module is provided with a first positive differential input terminal and a first negative differential input terminal. The first positive differential input terminal is provided with a first capacitor and a second capacitor. The first negative differential input terminal is provided with a first resistor and a third capacitor. The analog signal interface, the first capacitor, the second capacitor and the first positive differential input terminal are connected in sequence. The analog signal interface, the first resistor and the third capacitor and the first negative differential input terminal are connected in sequence.

3. The audio processing apparatus according to claim 1, characterized in that, The first signal conversion module is provided with a modulation signal output port, and the control module is provided with a detection signal receiving port. The modulation signal output port is connected to the base of the first transistor through a first diode. The emitter of the first transistor is grounded. The power supply and the detection signal receiving port are simultaneously connected to the collector of the first transistor.

4. The audio processing apparatus according to claim 1, characterized in that, It also includes a digital signal interface and a digital detection module. The digital signal interface is used to receive digital audio signals and is connected to the digital detection module. The control module is electrically connected to both the digital signal interface and the digital detection module. The digital detection module is used to identify and detect the digital audio signals.

5. The audio processing apparatus according to claim 4, characterized in that, The digital signal interface includes a USB interface and a WiFi interface.

6. The audio processing apparatus according to claim 1, characterized in that, The audio processing device also includes a host computer, which is connected to the control module via a 485 communication module. The host computer is used to input control commands to the control module.

7. The audio processing apparatus according to claim 1, characterized in that, It also includes a display screen, which is electrically connected to the control module and is used to display the operating status of the control module.

8. A sound system, characterized in that, The sound system includes the audio processing apparatus as described in any one of claims 1 to 7.

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