Acoustic signal processing control method for power amplifier

Abstract

The invention relates to the technical field of audio signals, and discloses a power amplifier acoustic signal processing control method, which comprises the following steps of: 1, monitoring an input signal, and acquiring an input signal data set; 2, monitoring a power supply signal, and obtaining a power supply data set; 3, monitoring the working environment, and obtaining an environment data set; 4, combining the input signal data set and the environment data set to calculate a signal influence coefficient under the influence of the environment factors; 5, calculating a power supply influence coefficient under the influence of the environmental factors in combination with the power supply data set and the environmental data set; step 6, according to the signal influence coefficient and the power supply influence coefficient, judging whether the power amplifier acoustic signal is influenced or not; and step 7, performing automatic adjustment processing on factors which can influence the acoustic signal of the power amplifier. The acoustic signal processing effect of the power amplifier is improved, dynamically changing working conditions can be handled conveniently, and the problems of signal distortion and influence on signal quality are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of audio signals, and in particular to a power amplifier acoustic signal processing and control method. Background Art

[0002] Amplifier acoustic signals refer to a series of sound-related electrical signals involved in the operation of a power amplifier (PA). Initially, these signals originate from various audio signal sources. The audio signals output by these sources are essentially electrical signals carrying sound information, with frequencies ranging from 20Hz to 20kHz, which is audible to the human ear. However, the signal power at these frequencies is low, making it difficult to directly drive speakers loud enough to produce sound.

[0003] When these low-power audio signals enter the amplifier, they begin a series of internal "journeys." At the amplifier's input stage, the signal undergoes impedance matching and initial amplification, preparing it for subsequent amplification. The signal then enters the intermediate amplifier stage, where, through multiple stages of amplification, the signal's voltage is gradually increased. However, a voltage boost alone isn't enough; the signal also needs sufficient power, which is why it enters the power amplifier stage, the most critical component of the amplifier. This stage utilizes a specific circuit structure to significantly boost the signal's power, delivering a high-power audio signal.

[0004] Ultimately, the high-power audio signal from the amplifier is transmitted to the speakers through the output circuit. During this process, changes in the signal control the vibrations of the speaker's diaphragm, converting the electrical signal into an acoustic signal—the sound we hear. The entire amplifier's acoustic signal carries various characteristic information about the original sound. Through a series of processing steps, the amplifier ensures the sound is restored and amplified, allowing us to enjoy clear and loud audio content.

[0005] The acoustic signal processing effect of the power amplifier is restricted by many factors. Power supply factors and environmental factors can affect the acoustic signal processing effect of the power amplifier, causing signal distortion and affecting signal quality. At the same time, the existing power amplifier acoustic signal processing process is difficult to have real-time monitoring and adjustment capabilities, and cannot cope with dynamically changing working conditions. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In response to the shortcomings of the existing technology, the present invention provides a power amplifier acoustic signal processing control method, which has the advantages of accurately predicting the signal processing results by evaluating the influence of multiple factors on the signal processing results, and automatically adjusting accordingly according to the evaluation results, so as to calibrate the signal to ensure its accuracy and stability, improve the power amplifier acoustic signal processing effect, and achieve dynamic adjustment effect, which is convenient for coping with dynamically changing working conditions and avoiding signal distortion and problems affecting signal quality.

[0008] (2) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solution: a power amplifier acoustic signal processing control method, comprising the following steps:

[0010] Step 1: Monitor the input signal and obtain the input signal data set;

[0011] Step 2: Monitor the power supply signal and obtain a power supply data set;

[0012] Step 3: Monitor the working environment and obtain the environmental data set;

[0013] Step 4: Calculate the signal influence coefficient under the influence of environmental factors by combining the input signal data set and the environmental data set;

[0014] Step 5: Calculate the power impact coefficient under the influence of environmental factors by combining the power data set and the environmental data set;

[0015] Step 6: Determine whether the amplifier acoustic signal will be affected based on the signal influence coefficient and the power influence coefficient;

[0016] Step 7: Automatically adjust the factors that may affect the acoustic signal of the power amplifier.

[0017] Preferably, the expression of the input signal data set is: In the expression, and They represent the first and last data in the input signal data set, respectively. The subscript n represents the number of input signals obtained, and the superscript a represents the specific parameters of the input signal data in the input signal data set, including the amplitude, frequency, and phase of the input signal.

[0018] Preferably, the expression of the power data set is: In the expression, and They represent the first and last data in the power data set, respectively. The subscript n represents the number of power data acquired, and the superscript b represents the specific parameters of the power data in the power data set, including the current, voltage, and internal resistance of the power supply.

[0019] Preferably, the expression of the environmental data set is: In the expression, and They represent the first and last data of the environmental data set respectively, where the subscript n represents the number of environmental data obtained, and the superscript c represents the specific parameters of the environmental data in the obtained environmental data set, including temperature data and humidity data.

[0020] Preferably, the calculation formula of the signal influence coefficient is:

[0021]

[0022] In the calculation formula, Xx represents the signal influence coefficient, f, p, and x are the amplitude, frequency, and phase of the current input signal respectively. 0 、p 0 、x 0 are the standard amplitude, frequency, and phase of the input signal respectively; α1, α2, and α3 are the influence weights of the amplitude, frequency, and phase of the input signal respectively. Respectively represent the ratio between the amplitude, frequency, and phase of the current input signal and their standard values, that is, the single signal influence coefficient of amplitude, frequency, and phase. s and w are the humidity and temperature of the current environmental data respectively. 0 、w 0 The standard values of humidity and temperature of environmental data, β1 and β2 are the influence weights of humidity and temperature respectively. They represent the ratios of current humidity and temperature to their standard values, i.e., the individual environmental impact coefficients of temperature and humidity.

[0023] Preferably, the calculation formula of the power supply influence coefficient is:

[0024]

[0025] In the calculation formula, Dd represents the calculation result of the power supply influence coefficient, l, y, and z are the current current, voltage, and internal resistance data respectively. 0 、y 0 、z 0 are the standard values of current, voltage and internal resistance data respectively; γ1, γ2 and γ3 are the influence weights of current, voltage and internal resistance data respectively. They are the ratios of current, voltage, internal resistance and their standard values, that is, the single power supply influence coefficients of current, voltage and internal resistance.

[0026] Preferably, when the calculated value of the signal influence coefficient is greater than the signal influence threshold, it means that the current input signal will affect the power amplifier acoustic signal under the current power supply conditions and environmental conditions.

[0027] Preferably, when the calculated value of the power supply influence coefficient is greater than the power supply influence threshold, it represents that the current power supply condition will affect the power amplifier acoustic signal.

[0028] Preferably, when the calculated value of the signal influence coefficient is greater than the signal influence threshold, the input signal is automatically adjusted until the recalculated value of the signal influence coefficient is no greater than the signal influence threshold.

[0029] Preferably, when the calculated value of the power supply impact coefficient is greater than the power supply impact threshold, the power supply parameters are automatically adjusted until the calculated value of the recalculated power supply impact coefficient is no greater than the power supply impact threshold.

[0030] Compared with the prior art, the present invention provides a method for processing and controlling acoustic signals of a power amplifier, which has the following beneficial effects:

[0031] 1. The present invention monitors the input signal data, power supply data and environmental data to comprehensively monitor the acoustic signal processing effect of the power amplifier from multiple aspects, evaluate the impact of various factors on the signal processing results in real time, and accurately predict the signal processing results based on various data, thereby improving the effect of the power amplifier acoustic signal processing.

[0032] 2. The present invention evaluates the degree of power supply influence through the calculation results of the signal influence coefficient and the power supply influence coefficient, and performs corresponding automatic adjustments based on the evaluation results to calibrate the signal to ensure its accuracy and stability, improve the acoustic signal processing effect of the power amplifier, and achieve dynamic adjustment effect, which is convenient for coping with dynamically changing working conditions and avoiding signal distortion and problems affecting signal quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a step diagram of the method of the present invention. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0035] See also Figure 1 , a power amplifier acoustic signal processing control method, comprising the following steps:

[0036] Step 1: Monitor the input signal and obtain the input signal data set;

[0037] The expression of the input signal data set is: In the expression, and Represent the first and last data in the input signal data set, respectively. The subscript n represents the number of input signals obtained, and the superscript a represents the specific parameters of the input signal data in the input signal data set, including the amplitude, frequency, and phase of the input signal. The amplitude, frequency, and phase of the input signal are monitored and obtained through network-connected sensors.

[0038] Signal amplitude reflects the strength of the signal. The larger the amplitude, the more energy the signal carries. In the power amplifier, the amplitude affects the output power and volume. The frequency reflects the number of times the signal completes periodic changes in unit time and determines the speed of the signal's periodic changes. The phase indicates the state of the signal and reflects the starting position of the signal. The amplitude, frequency, and phase reflect the characteristics of the input signal from different aspects. By combining these factors to analyze the input signal, understand the initial state of the input signal, and judge whether the input signal can meet the processing requirements, monitoring these parameters can ensure that the signal meets the requirements during the entire processing process.

[0039] Step 2: Monitor the power supply signal and obtain a power supply data set;

[0040] The expression for the power data set is: In the expression, and They represent the first and last data in the power data set, respectively. The subscript n represents the number of power data acquired, and the superscript b represents the specific parameters of the power data in the power data set, including the current, voltage, and internal resistance of the power supply. The current, voltage, and internal resistance of the power supply are monitored and acquired through network-connected sensors.

[0041] By monitoring the current, it is easy to understand the working status of the power amplifier. The voltage reflects the energy provided by the power supply and the potential difference of the signal in the circuit. The power supply voltage fluctuation will cause signal distortion. By monitoring and controlling the voltage, it can ensure that the power amplifier can accurately amplify the input signal and improve the quality of the audio signal. The internal resistance reflects the energy consumption of the power supply when outputting current. During the signal transmission process, matching the appropriate internal resistance can reduce signal reflection, ensure signal integrity, and improve the acoustic signal processing effect of the power amplifier.

[0042] Step 3: Monitor the working environment and obtain the environmental data set;

[0043] The expression of the environment dataset is: In the expression, and They represent the first and last data of the environmental data set, respectively. The subscript n represents the number of environmental data acquired, and the superscript c represents the specific parameters of the environmental data in the acquired environmental data set, including temperature data and humidity data. The temperature data and humidity data are monitored and acquired through network-connected sensors.

[0044] Ambient temperature and humidity are two important environmental factors that affect the performance of acoustic signal processing. Ambient temperature can affect the performance of the internal components of the power amplifier, affecting the amplifier's amplification performance, frequency response and stability. Humidity can also affect the materials of the power amplifier. Appropriate ambient temperature and humidity can ensure the normal operation of the internal components of the power amplifier, prevent overheating damage, and improve system efficiency.

[0045] Step 4: Calculate the signal influence coefficient under the influence of environmental factors by combining the input signal data set and the environmental data set;

[0046] The calculation formula of the signal influence coefficient is:

[0047]

[0048] In the calculation formula, Xx represents the signal influence coefficient, f, p, and x are the amplitude, frequency, and phase of the current input signal respectively. 0 、p 0 、x 0 are the standard amplitude, frequency, and phase of the input signal respectively; α1, α2, and α3 are the influence weights of the amplitude, frequency, and phase of the input signal respectively. Respectively represent the ratio between the amplitude, frequency, and phase of the current input signal and their standard values, that is, the single signal influence coefficient of amplitude, frequency, and phase, Represents the comprehensive signal influence coefficient of the amplitude, frequency, phase and corresponding weight of the current input signal. s and w are the humidity and temperature of the current environmental data respectively. 0 、w 0 The standard values of humidity and temperature of environmental data, β1 and β2 are the influence weights of humidity and temperature respectively. Respectively represent the ratio between the current humidity and temperature and their standard values, that is, the individual environmental impact coefficients of temperature and humidity. Represents the comprehensive coefficient of environmental impact calculated by comprehensive temperature, humidity and corresponding weights. It represents the signal influence coefficient under the consideration of environmental influence, making the calculation result of the signal influence coefficient more accurate and accurately evaluating the input signal and the acoustic signal processing effect of the power amplifier;

[0049] Step 5: Calculate the power impact coefficient under the influence of environmental factors by combining the power data set and the environmental data set;

[0050] The calculation formula of power supply influence coefficient is:

[0051]

[0052] In the calculation formula, Dd represents the calculation result of the power supply influence coefficient, l, y, and z are the current current, voltage, and internal resistance data respectively. 0 、y 0 、z 0 are the standard values of current, voltage and internal resistance data respectively; γ1, γ2 and γ3 are the influence weights of current, voltage and internal resistance data respectively. They are the ratios of current, voltage, internal resistance and their standard values, that is, the single power supply influence coefficients of current, voltage and internal resistance. The comprehensive coefficient representing the power supply influence calculated by integrating current, voltage, internal resistance and corresponding weights makes the calculation result of the power supply influence coefficient more accurate and accurately evaluates the power supply and the acoustic signal processing effect of the amplifier;

[0053] Step 6: Determine whether the amplifier acoustic signal will be affected based on the signal influence coefficient and the power influence coefficient;

[0054] When the calculated value of the signal influence coefficient is greater than the signal influence threshold, it means that the current input signal will affect the amplifier acoustic signal under the current power supply conditions and environmental conditions;

[0055] When the calculated value of the power supply impact coefficient is greater than the power supply impact threshold, it means that the current power supply condition will affect the amplifier acoustic signal;

[0056] Step 7: Automatically adjust the factors that may affect the acoustic signal of the power amplifier;

[0057] When the calculated value of the signal influence coefficient is greater than the signal influence threshold, the input signal is automatically adjusted until the recalculated value of the signal influence coefficient is no greater than the signal influence threshold;

[0058] The signal impact degree is evaluated through the calculation results of the signal impact coefficient. The input signal is automatically adjusted according to the evaluation results to achieve signal calibration to ensure its accuracy and stability, improve the acoustic signal processing effect of the power amplifier, and achieve dynamic adjustment effect to facilitate the response to dynamically changing working conditions.

[0059] When the calculated value of the power supply impact coefficient is greater than the power supply impact threshold, the power supply parameters are automatically adjusted until the recalculated value of the power supply impact coefficient is no greater than the power supply impact threshold;

[0060] The power supply influence coefficient is calculated to evaluate the degree of power supply influence, and the power supply parameters are automatically adjusted according to the evaluation results to calibrate the signal to ensure its accuracy and stability, improve the acoustic signal processing effect of the power amplifier, and achieve dynamic adjustment effect to facilitate the response to dynamically changing working conditions.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A power amplifier acoustic signal processing control method, characterized in that: The following steps are involved: Step 1: Monitor the input signal and obtain the input signal data set; Step 2: Monitor the power supply signal and obtain a power supply data set; Step 3: Monitor the working environment and obtain the environmental data set; Step 4: Calculate the signal influence coefficient under the influence of environmental factors by combining the input signal data set and the environmental data set; Step 5: Calculate the power impact coefficient under the influence of environmental factors by combining the power data set and the environmental data set; Step 6: Determine whether the amplifier acoustic signal will be affected based on the signal influence coefficient and the power influence coefficient; Step 7: Automatically adjust the factors that may affect the acoustic signal of the power amplifier.

2. The method for controlling power amplifier acoustic signal processing according to claim 1, wherein: The expression of the input signal data set is: In the expression, and They represent the first and last data in the input signal data set, respectively. The subscript n represents the number of input signals obtained, and the superscript a represents the specific parameters of the input signal data in the input signal data set, including the amplitude, frequency, and phase of the input signal.

3. The method for controlling power amplifier acoustic signal processing according to claim 2, wherein: The expression of the power data set is: In the expression, and They represent the first and last data in the power data set, respectively. The subscript n represents the number of power data acquired, and the superscript b represents the specific parameters of the power data in the power data set, including the current, voltage, and internal resistance of the power supply.

4. The method for controlling power amplifier acoustic signal processing according to claim 3, wherein: The expression of the environmental data set is: In the expression, and They represent the first and last data of the environmental data set respectively, where the subscript n represents the number of environmental data obtained, and the superscript c represents the specific parameters of the environmental data in the obtained environmental data set, including temperature data and humidity data.

5. The method for controlling power amplifier acoustic signal processing according to claim 4, wherein: The calculation formula of the signal influence coefficient is: In the calculation formula, Xx represents the signal influence coefficient, f, p, and x are the amplitude, frequency, and phase of the current input signal respectively. 0 、p 0 、x 0 are the standard amplitude, frequency, and phase of the input signal respectively; α1, α2, and α3 are the influence weights of the amplitude, frequency, and phase of the input signal respectively. Respectively represent the ratio between the amplitude, frequency, and phase of the current input signal and their standard values, that is, the single signal influence coefficient of amplitude, frequency, and phase. s and w are the humidity and temperature of the current environmental data respectively. 0 、w 0 The standard values of humidity and temperature of environmental data, β1 and β2 are the influence weights of humidity and temperature respectively. They represent the ratios of current humidity and temperature to their standard values, i.e., the individual environmental impact coefficients of temperature and humidity.

6. The method for controlling power amplifier acoustic signal processing according to claim 5, wherein: The calculation formula of the power supply influence coefficient is: In the calculation formula, Dd represents the calculation result of the power supply influence coefficient, l, y, and z are the current current, voltage, and internal resistance data respectively. 0 、y 0 、z 0 are the standard values of current, voltage and internal resistance data respectively; γ1, γ2 and γ3 are the influence weights of current, voltage and internal resistance data respectively. They are the ratios of current, voltage, internal resistance and their standard values, that is, the single power supply influence coefficients of current, voltage and internal resistance.

7. The method for controlling power amplifier acoustic signal processing according to claim 6, wherein: When the calculated value of the signal influence coefficient is greater than the signal influence threshold, it means that the current input signal will affect the power amplifier acoustic signal under the current power supply conditions and environmental conditions.

8. The method for controlling power amplifier acoustic signal processing according to claim 7, wherein: When the calculated value of the power supply influence coefficient is greater than the power supply influence threshold, it indicates that the current power supply condition will affect the power amplifier acoustic signal.

9. The method for controlling power amplifier acoustic signal processing according to claim 8, wherein: When the calculated value of the signal influence coefficient is greater than the signal influence threshold, the input signal is automatically adjusted until the recalculated value of the signal influence coefficient is no greater than the signal influence threshold.

10. The method for controlling power amplifier acoustic signal processing according to claim 1, wherein: When the calculated value of the power supply impact coefficient is greater than the power supply impact threshold, the power supply parameters are automatically adjusted until the recalculated value of the power supply impact coefficient is no greater than the power supply impact threshold.

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