CN106162486B - For being adapted to the power amplifier chips adjustment method and system, simulation power amplification chip of loudspeaker - Google Patents
For being adapted to the power amplifier chips adjustment method and system, simulation power amplification chip of loudspeaker Download PDFInfo
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- CN106162486B CN106162486B CN201510209469.0A CN201510209469A CN106162486B CN 106162486 B CN106162486 B CN 106162486B CN 201510209469 A CN201510209469 A CN 201510209469A CN 106162486 B CN106162486 B CN 106162486B
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Abstract
The invention discloses a kind of for being adapted to the power amplifier chips adjustment method and system, simulation power amplification chip of loudspeaker.The system comprises computer, simulation power amplification chip and oscillographs.The computer generates sine wave test waveform for simulating.The simulation power amplification chip be used to amplify the sine wave test waveform and demodulation process after be output on the oscillograph and show.The computer is also used to carry out analyzing and determining whether the simulation power amplification chip adapts to propose the loudspeaker product of meter and when the simulation power amplification chip does not adapt to the loudspeaker product for proposing meter by the wave character to display waveform on the oscillograph, it calculates the simulation power amplification chip and proposes the performance gap between meter loudspeaker, provide the simulation power amplification chip improved design of the loudspeaker product based on making the simulation power amplification chip adapt to propose by the performance gap.The present invention is substantially shorter loudspeaker research and development of products and debugging cycle, reduces the overall cost of loudspeaker product.
Description
Technical field
The present invention relates to power amplifier chips technical fields, more specifically to a kind of for being adapted to the power amplifier chips of loudspeaker
Adjustment method and system, simulation power amplification chip.
Background technique
Different types of loudspeaker product is different for the performance requirement of power amplifier chips, and the loudspeaker product per a maturation is pushed to
Before market, longer R&D cycle and production debugging period need to be undergone.Under the meagre Industry of loudspeaker product profit, such as
What shortens the research and development and debugging cycle of loudspeaker product, reduces product cost, it has also become loudspeaker industry technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of for being adapted to loudspeaker
Power amplifier chips adjustment method and system, simulation power amplification chip.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of for being adapted to the power amplifier chips of loudspeaker
Adjustment method, described method includes following steps:
S1, sine wave test waveform is generated by computer simulation, sine wave test waveform is inputted into analog amplifier to be measured
Chip；
S2, simulation power amplification chip is amplified to the sine wave test waveform of input and demodulation process, by it is processed just
String wave test waveform, which is output on oscillograph, to be shown；
S3, carry out whether analyzing and determining simulation power amplification chip by wave character of the computer to display waveform on oscillograph
Adapt to propose the loudspeaker product of meter, and when the simulation power amplification chip does not adapt to the loudspeaker product for proposing meter, calculating simulation
Power amplifier chips and propose meter loudspeaker between performance gap, based on the performance gap offer make the simulation power amplification chip adapt to intend
The simulation power amplification chip improved design of the loudspeaker product of design.
In the above-mentioned power amplifier chips adjustment method for being adapted to loudspeaker of the present invention, by oscillograph in the step S3
The wave character of upper display waveform carries out the step of whether simulation power amplification chip adapts to propose the loudspeaker product of meter analyzed and determined
Including following sub-step:
Whether S31, the rated power for calculating the sinewave output waveform signal through enhanced processing are more than the loudspeaker for proposing meter
The rated output power of product；If so, then determining that simulation power amplification chip does not adapt to the loudspeaker for proposing meter, if not, executing step
Rapid S32；
S32, the sinewave output waveform shown in oscillograph is compared with standard sine wave output waveform, according to wave
Shape feature comparison result judges whether simulation power amplification chip adapts to propose the loudspeaker of meter.
In the above-mentioned power amplifier chips adjustment method for being adapted to loudspeaker of the present invention, according to waveform spy in the step S32
Sign comparison result judges whether simulation power amplification chip adapts to specifically include the step of proposing the loudspeaker of meter:
S321, the sinewave output waveform is judged with the presence or absence of top is cut, if so, thening follow the steps S322；If not, executing
Step S323；
S322, the distortion factor for calculating sinewave output waveform, judge whether the distortion factor exceeds the slicing for proposing meter loudspeaker
Distortion range and the distortion factor exceed propose meter loudspeaker clipping distortion range when, determine that the simulation power amplification chip does not adapt to
Propose the loudspeaker of meter；
S323, determine that simulation power amplification chip meets the performance requirement for proposing the loudspeaker of meter.
In the above-mentioned power amplifier chips adjustment method for being adapted to loudspeaker of the present invention, analog amplifier is calculated in the step S3
Chip and propose the performance gap between meter loudspeaker, make the simulation power amplification chip adapt to propose by performance gap offer based on
Loudspeaker product simulation power amplification chip improved design the step of include:
It is calculated as being adapted to the amplification performance parameter for the amplifying circuit that the loudspeaker for proposing meter should use, and generates corresponding amplification
Circuit alternative and the amplifying circuit alternative is shown on a display screen.
In the above-mentioned power amplifier chips adjustment method for being adapted to loudspeaker of the present invention, analog amplifier is calculated in the step S3
Chip and propose the performance gap between meter loudspeaker, make the simulation power amplification chip adapt to propose by performance gap offer based on
Loudspeaker product simulation power amplification chip improved design the step of further include:
It is calculated as being adapted to the resistance value of the resistance for the filter circuit part that the loudspeaker for proposing meter should be serially connected with simulation power amplification chip,
The simulation power amplification chip debugging plan for the resistance that there is the resistance value in the filter circuit part of simulation power amplification chip concatenation is generated, and
The simulation power amplification chip debugging plan is shown on a display screen.
The present invention also constructs a kind of for being adapted to the power amplifier chips debugging system of loudspeaker, and the system comprises computers, mould
Quasi- power amplifier chips and oscillograph；
The computer generates sine wave test waveform for simulating, and sine wave test waveform is inputted analog amplifier to be measured
Chip；
The simulation power amplification chip be used for sine wave test waveform amplify and demodulation process after be output to institute
It states and is shown on oscillograph；
Described in the computer is also used to be analyzed and determined by the wave character to display waveform on the oscillograph
Whether simulation power amplification chip adapts to propose the loudspeaker product of meter and does not adapt to the loudspeaker for proposing meter in the simulation power amplification chip
When product, the performance gap between the simulation power amplification chip and the loudspeaker product for proposing meter is calculated, is based on the performance gap
The simulation power amplification chip improved design for making the simulation power amplification chip adapt to propose the product of meter loudspeaker is provided.
The present invention also constructs a kind of for being adapted to the simulation power amplification chip of loudspeaker, the simulation power amplification chip by debugging
Include:
Audio input port, including the first audio input port and the second audio input port, it is defeated for receiving computer
The sine wave test waveform entered；
Filter circuit, for being filtered to sine wave test waveform；
Amplifying circuit for carrying out power amplification processing to the sine wave test waveform through filtering, and exports modulated
The PWM waveform that amplitude increases；
Demodulator circuit, for carrying out demodulation process to the PWM waveform, to restore wave character and primary sinusoid test waves
The wave character of shape is identical, and the sinewave output waveform that amplitude increases.
In the above-mentioned simulation power amplification chip for being adapted to loudspeaker by debugging of the present invention, the filter circuit includes the
One capacitor, the second capacitor, third capacitor, the 4th capacitor, first resistor, second resistance, 3rd resistor, the 4th resistance, in which:
First resistor one end connects the third pin of amplifying circuit, and the first resistor other end connects first capacitor one end, the
The one capacitor other end connects the first audio input port；
Second resistance one end connects the 4th pin of amplifying circuit, and the second resistance other end connects second capacitor one end, the
Two capacitor other ends ground connection；
3rd resistor one end connects the 11st pin of amplifying circuit, 3rd resistor other end third capacitor one end, third
Capacitor other end ground connection；
4th resistance one end connects the 12nd pin of amplifying circuit, and the 4th resistance other end connects the 4th capacitor one end,
The 4th capacitor other end connects the second audio input port.
In the above-mentioned simulation power amplification chip for being adapted to loudspeaker by debugging of the present invention, the demodulator circuit includes the
One inductance, the second inductance, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 11st
Capacitor, the 12nd capacitor, the 13rd capacitor, the 14th capacitor, the 15th capacitor, the 16th capacitor, the 5th resistance, the 6th electricity
Resistance, the 7th resistance, the 8th resistance, in which:
First inductance one end connects the 25th pin of amplifying circuit, and the first inductance other end connects the 13rd capacitor one
End, the 13rd capacitor other end ground connection；
12nd capacitor and the 8th capacitor are connected in series, and the 26th of the 12nd capacitor one end connection amplifying circuit is drawn
Foot, the 8th capacitor other end connect the 5th resistance one end, the 5th resistance other end ground connection；
Second inductance one end connects the 23rd pin of amplifying circuit, and the second inductance other end connects the 14th capacitor one
End, the 14th capacitor other end ground connection；
5th capacitor and the 9th capacitor are connected in series, and the 9th capacitor one end connects the 22nd pin of amplifying circuit, the
The eight capacitor other ends connect the 6th resistance one end, the 6th resistance other end ground connection；
6th capacitor and the tenth capacitor are connected in series, the 17th pin of the 6th capacitor one end connection amplifying circuit, and the 8th
The capacitor other end connects the 7th resistance one end, the 7th resistance other end ground connection；
7th capacitor and the 11st capacitor are connected in series, and the 7th capacitor one end connects the 21st pin of amplifying circuit,
The 11st capacitor other end connects the 8th resistance one end, the 8th resistance other end ground connection.
Implement the present invention for being adapted to the power amplifier chips adjustment method and system, simulation power amplification chip of loudspeaker, can reach with
It is lower the utility model has the advantages that
1, the magnetic bead F38 and magnetic bead F39 of the invention by the demodulator circuit of simulation power amplification chip replaces with 22uH (milli respectively
It is prosperous) the first inductance and the second inductance, demodulator circuit accurate reproduction from the sinewave output waveform of amplifying circuit can be made to go out width
Be worth the sine wave test waveform increased, convenient for computer by the accurate calculating simulation power amplifier chips of sinewave output waveform analysis and
The performance gap between meter loudspeaker product is proposed, reasonable simulation power amplification chip is provided based on the performance gap and designs improvement side
Case meets client for the performance requirement of loudspeaker product.
2, present invention employs computer by client propose based on loudspeaker product performance requirement, to through simulation power amplification chip
Amplify and the sinewave output waveform shown on oscillograph carries out distortion factor analysis, judges whether simulation power amplification chip fits with this
Assigned in the loudspeaker product for proposing meter, and accordingly provide the analog amplifier for making the simulation power amplification chip adapt to propose meter loudspeaker product
Chip improved design, so that simulation power amplification chip of the present invention is produced by debugging and the compatible various types of loudspeaker of improvement design
Product, thus the research and development and debugging cycle of loudspeaker product are shortened, it facilitates manufacturer and quickly introduce loudspeaker product to the market.
Detailed description of the invention
Fig. 1 is the method provided by the present invention for a specific embodiment for being adapted to the power amplifier chips adjustment method of loudspeaker
Flow chart；
Fig. 2 is shown in FIG. 1 for being adapted to the simulation power amplification chip debugging side that the power amplifier chips adjustment method of loudspeaker includes
The specific flow chart of case；
Fig. 3 is the structure provided by the present invention for a specific embodiment for being adapted to the power amplifier chips debugging system of loudspeaker
Block diagram；
Fig. 4 is shown in Fig. 3 for being adapted to the structural block diagram of the simulation power amplification chip of the power amplifier chips debugging system of loudspeaker；
Fig. 5 is the circuit diagram of the simulation power amplification chip before improving；
Fig. 6 is the circuit diagram of the first part of improved simulation power amplification chip；
The circuit diagram of the second part of the improved simulation power amplification chip of Fig. 7.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of for being adapted to the power amplifier chips adjustment method of loudspeaker, for by through analog amplifier core
The sinewave output waveform of 200 enhanced processing of piece carries out waveform analysis to judge whether simulation power amplification chip 200 adapts to propose
The loudspeaker product of meter and when the simulation power amplification chip 200 does not adapt to the loudspeaker product for proposing meter, providing makes the analog amplifier
Chip 200 adapts to the simulation power amplification chip improved design of the loudspeaker product of your design, so that simulation power amplification chip 200 is simultaneous
Hold various types of loudspeaker products, so that the research and development cost of loudspeaker product be effectively reduced.
Fig. 1 shows the method stream of a specific embodiment of power amplifier chips adjustment method of the present invention for being adapted to loudspeaker
Cheng Tu, as shown in Figure 1, the power amplifier chips adjustment method that the present invention is used to be adapted to loudspeaker includes the following steps:
In step S101 first, by 100 product sine wave test waveform of computer, and pass through simulation power amplification chip 200
Audio input port 204 sine wave test waveform is inputted into simulation power amplification chip 200 to be measured.
In later step S102, the sine wave test waveform of 200 pairs of simulation power amplification chip inputs amplifies and solution is mediated
Reason, gained sinewave output waveform is output on oscillograph 300 and is shown.
In later step S103, analyzed by wave character of the computer 100 to display waveform on oscillograph 300,
Judge whether simulation power amplification chip 200 adapts to propose the loudspeaker product of meter and do not adapt in simulation power amplification chip 200 propose
When the loudspeaker product of meter, calculating simulation power amplifier chips 200 and propose meter loudspeaker product between performance gap, based on the performance it is poor
Away from provide make the simulation power amplification chip 200 adapt to propose meter loudspeaker product simulation power amplification chip improved design.
Fig. 2 shows the method flow diagrams of a specific embodiment of step S103 in Fig. 1.As shown in figure 3, the step
S103 is specifically included:
In step S1031 first, rated power and the distortion of sinewave output waveform signal are read by oscillograph 300
Degree.
In later step S1032, judge whether the rated power is more than the rated power for proposing meter loudspeaker product.Such as volume
Determining power is more than the rated power for proposing meter loudspeaker product, thens follow the steps S1035, otherwise, executes step S1034.
In later step S1034, judge whether the distortion factor of sinewave output waveform signal is more than to propose cutting for meter loudspeaker
Wave distortion range.Such as distortion factor of the sinewave output waveform signal is more than to propose the clipping distortion range of meter loudspeaker, then executes
Otherwise step S1035 executes step S1036.
In later step S1035, computer 100 determines that simulation power amplification chip 200 does not meet the property for proposing meter loudspeaker product
It can require.
Or in step S1036, computer 100 determines that simulation power amplification chip 200 meets the performance for proposing meter loudspeaker product
It is required that.
In later step S1037, by computer 100 be calculated as adaptation propose meter loudspeaker product should be serially connected with analog amplifier
The resistance of 201 part of filter circuit of chip 200 is generated and is concatenated in 201 part of filter circuit of simulation power amplification chip 200
200 debugging plan of simulation power amplification chip with the valued resistor, and show that the simulation power amplification chip 200 is debugged on a display screen
Scheme.
Or adaptation is calculated as by computer 100 and proposes reasonably putting for amplifying circuit 202 that the loudspeaker of meter should use
Big performance parameter, and generate and put using the original that the amplifying circuit 202 with the amplification performance parameter substitutes simulation power amplification chip 200
The amplifying circuit alternative of big circuit 202, and the amplifying circuit alternative is shown on a display screen.
Based on Fig. 1 to shown in Fig. 2 for being adapted to the power amplifier chips adjustment method of loudspeaker, present invention further teaches a kind of use
In the power amplifier chips debugging system of adaptation loudspeaker.
As shown in figure 3, the power amplifier chips debugging system for being used to be adapted to loudspeaker includes that computer 100 and computer 100 are logical
The oscillograph 300 believing the simulation power amplification chip 200 of connection and being communicated to connect with simulation power amplification chip 200.Wherein:
Computer 100 generates sine wave test waveform for simulating, and sine wave test waveform is inputted analog amplifier to be measured
Chip 200；
Simulation power amplification chip 200 be used for sine wave test waveform amplify and demodulation process after be output to oscillography
It is shown on device 300；
The computer 100 is also used to analyze the wave character of display waveform on oscillograph 300, passes through wave character
Analyze and determine whether the simulation power amplification chip 200 adapts to propose the loudspeaker product of meter and in 200 discomfort of simulation power amplification chip
When assigned in the loudspeaker product for proposing meter, calculating simulation power amplifier chips 200 and propose meter loudspeaker product between performance gap, be based on
The performance gap provides the simulation power amplification chip design improvement for the loudspeaker product for making the simulation power amplification chip 200 adapt to propose meter
Scheme.
Simulation power amplification chip improved design provided by computer 100 of the present invention includes:
One, in analog amplifier core of 201 part of filter circuit of simulation power amplification chip 200 concatenation with certain valued resistor
200 debugging plan of piece；
Two, the amplifying circuit of simulation power amplification chip 200 is substituted using the amplifying circuit 202 with setting amplification performance parameter
The amplifying circuit alternative of 202 parts.
The present invention is substantially shorter by providing 200 evolutionary approach of simulation power amplification chip to client and proposes meter loudspeaker product
R&D cycle, improve loudspeaker research and development of products progress.
Fig. 4 shows the structural block diagram of simulation power amplification chip 200 in Fig. 3.As shown in figure 4, simulation power amplification chip of the present invention
200 include audio input port 204, filter circuit 201, amplifying circuit 202 and the demodulator circuit 203 being sequentially connected electrically.The sound
Frequency input terminal mouth 204 includes the first audio input port (L channel before i.e.) and the second audio input port (right channel before i.e.).
The filter circuit 201 is for being filtered the sine wave test waveform inputted through audio input port 204.
The amplifying circuit 202 is used to carry out power amplification processing to the sine wave test waveform through filtering, and exports modulation
The PWM waveform that amplitude afterwards increases；
The demodulator circuit 203 is used to carry out demodulation process to the PWM waveform, is surveyed with restoring wave character and primary sinusoid
The wave character for trying waveform is identical, and the sinewave output waveform that amplitude increases, which is output to oscillography
It is shown on device 300.
Fig. 5 is shown by a specific implementation by debugging simulation power amplification chip 200 of loudspeaker in terms of being adapted to and propose
The circuit diagram of example, Fig. 6 show the circuit diagram of the first part of the another specific embodiment of the simulation power amplification chip 200, and Fig. 7 shows
The circuit diagram of the second part of the another specific embodiment of the simulation power amplification chip 200 is gone out.
Fig. 6 and simulation power amplification chip shown in Fig. 7 200 exist compared to the improvement of simulation power amplification chip 200 shown in fig. 5
In: by demodulator circuit 203 magnetic bead F38 and magnetic bead F39 replace with respectively 22uH (milihenry) the first inductance L1 and second electricity
Feel L2, the accurate reproduction from 202 output waveform of amplifying circuit of demodulator circuit 203 made to go out the sine wave test waveform of amplitude increase,
It improves 100 simulation power amplification chip 200 of computer and proposes the suitability judging result accuracy rate of meter loudspeaker product, in order to calculate
Machine 100 is based on the suitability judging result and provides reasonable simulation power amplification chip improved design.
As shown in FIG. 6 and 7, in the circuit structure of simulation power amplification chip 200 of the present invention, filter circuit 201 includes the
One capacitor C4, the second capacitor C5, third capacitor C6, the 4th capacitor C7, first resistor R1, second resistance R2,3rd resistor R3,
Four resistance R4, in which:
The one end first resistor R1 connects the third pin of amplifying circuit 202, and the first resistor R1 other end connects first capacitor
The one end C4, the first capacitor C4 other end connect the first audio input port；
The one end second resistance R2 connects the 4th pin of amplifying circuit 202, and the second resistance R2 other end connects the second capacitor
The one end C5, second capacitor C5 other end ground connection；
The one end 3rd resistor R3 connects the 11st pin of amplifying circuit 202,3rd resistor R3 other end third capacitor C6
One end, third capacitor C6 other end ground connection；
4th one end resistance R4 connects the 12nd pin of amplifying circuit 202, the 4th electricity of the 4th resistance R4 other end connection
Hold the one end C7, the 4th capacitor C7 other end connects the second audio input port.
Demodulator circuit 203 includes the first inductance L1, the second inductance L2, the 5th capacitor C12, the 6th capacitor C13, the 7th capacitor
C14, the 8th capacitor C15, the 9th capacitor C16, the tenth capacitor C17, the 11st capacitor C18, the 12nd capacitor C19, the 13rd electricity
Hold C20, the 14th capacitor C21, the 15th capacitor C22, the 16th capacitor C23, the 5th resistance R9, the 6th resistance R10, the 7th electricity
Hinder R11, the 8th resistance R12, in which:
First one end inductance L1 connects the 25th pin of amplifying circuit 202, first inductance L1 other end connection the tenth
Three one end capacitor C20, the 13rd capacitor C20 other end ground connection；
12nd capacitor C19 and the 8th capacitor C15 is connected in series, and the 12nd one end capacitor C19 connects amplifying circuit 202
26th pin, the 8th capacitor C15 other end connect the 5th one end resistance R9, the 5th resistance R9 other end ground connection；
Second one end inductance L2 connects the 23rd pin of amplifying circuit 202, second inductance L2 other end connection the tenth
Four one end capacitor C21, the 14th capacitor C21 other end ground connection；
5th capacitor C12 and the 9th capacitor C16 is connected in series, and the 9th one end capacitor C12 connects the second of amplifying circuit 202
12 pins, the 8th capacitor C15 other end connect the 6th one end resistance R10, the 6th resistance R10 other end ground connection；
6th capacitor C13 and the tenth capacitor C17 is connected in series, and the 6th one end capacitor C13 connects the tenth of amplifying circuit 202
Seven pins, the 8th capacitor C15 other end connect the 7th one end resistance R11, the 7th resistance R11 other end ground connection；
7th capacitor C14 and the 11st capacitor C18 are connected in series, and the 7th one end capacitor C14 connects the of amplifying circuit 202
21 pins, the 11st capacitor C18 other end connect the 8th one end resistance R12, the 8th resistance R12 other end ground connection.
The present invention be used for be adapted to loudspeaker power amplifier chips adjustment method and system, simulation power amplification chip 200 innovative point such as
Under:
1, the magnetic bead F38 and magnetic bead F39 of the invention by the demodulator circuit 203 of simulation power amplification chip 200 is replaced with respectively
The the first inductance L1 and the second inductance L2 of 22uH (milihenry), can make sinewave output wave of the demodulator circuit 203 from amplifying circuit 202
Accurate reproduction goes out the primary sinusoid test waveform of amplitude increase in shape, passes through sinewave output waveform analysis convenient for computer 100
Accurate calculating simulation power amplifier chips 200 and performance gap between meter loudspeaker product is proposed, it is reasonable to provide based on the performance gap
Simulation power amplification chip improved design, meet client to the performance requirement of loudspeaker product.
2, present invention employs computer 100 by client propose based on loudspeaker product performance requirement, to through analog amplifier
Chip 200 amplifies and the sinewave output waveform shown on oscillograph 300 carries out distortion factor analysis, judges analog amplifier with this
Whether chip 200 adapts to propose the loudspeaker product of meter, and accordingly providing makes the simulation power amplification chip 200 adapt to propose meter loudspeaker
The simulation power amplification chip improved design of product, so that simulation power amplification chip of the present invention 200 passes through debugging and improvement design
Compatible various types of loudspeaker products facilitate manufacturer for loudspeaker so as to shorten the research and development and debugging cycle of loudspeaker product
Product is quickly introduced to the market.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read Only Memory, ROM) or random access memory (Random ABBess
Memory, RAM) etc..
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (9)
1. a kind of for being adapted to the power amplifier chips adjustment method of loudspeaker, which is characterized in that described method includes following steps:
S1, sine wave test waveform is generated by computer simulation, sine wave test waveform is inputted into simulation power amplification chip to be measured；
S2, simulation power amplification chip is amplified to the sine wave test waveform of input and demodulation process, by processed sine wave
Test waveform is output on oscillograph and is shown；
S3, it carries out analyzing and determining whether simulation power amplification chip is adapted to by wave character of the computer to display waveform on oscillograph
In the loudspeaker product for proposing meter, and when the simulation power amplification chip does not adapt to the loudspeaker product for proposing meter, calculating simulation power amplifier
Chip and propose the performance gap between meter loudspeaker, make the simulation power amplification chip adapt to propose by performance gap offer based on
Loudspeaker product simulation power amplification chip improved design.
2. according to claim 1 a kind of for being adapted to the power amplifier chips adjustment method of loudspeaker, which is characterized in that the step
It carries out analyzing and determining whether simulation power amplification chip adapts to propose by the wave character to display waveform on oscillograph in rapid S3
The step of loudspeaker product of meter includes following sub-step:
Whether S31, the rated power for calculating the sinewave output waveform signal through enhanced processing are more than the loudspeaker product for proposing meter
Rated output power；If so, then determining that simulation power amplification chip does not adapt to the loudspeaker for proposing meter, if not, thening follow the steps
S32；
S32, the sinewave output waveform shown in oscillograph is compared with standard sine wave output waveform, according to waveform spy
Sign comparison result judges whether simulation power amplification chip adapts to propose the loudspeaker of meter.
3. according to claim 2 a kind of for being adapted to the power amplifier chips adjustment method of loudspeaker, which is characterized in that the step
Judge whether simulation power amplification chip adapts to the step of proposing the loudspeaker of meter and specifically wrap according to wave character comparison result in rapid S32
It includes:
S321, the sinewave output waveform is judged with the presence or absence of top is cut, if so, thening follow the steps S322；If not, thening follow the steps
S323；
S322, the distortion factor for calculating sinewave output waveform, judge whether the distortion factor exceeds the clipping distortion for proposing meter loudspeaker
Range and the distortion factor exceed propose meter loudspeaker clipping distortion range when, determine that the simulation power amplification chip does not adapt to and propose
The loudspeaker of meter；
S323, determine that simulation power amplification chip meets the performance requirement for proposing the loudspeaker of meter.
4. according to claim 3 a kind of for being adapted to the power amplifier chips adjustment method of loudspeaker, which is characterized in that the step
Simulation power amplification chip is calculated in rapid S3 and proposes the performance gap between meter loudspeaker, which is made based on performance gap offer
The step of putting the simulation power amplification chip improved design for the loudspeaker product that chip adapts to propose meter include:
It is calculated as being adapted to the amplification performance parameter for the amplifying circuit that the loudspeaker for proposing meter should use, and generates corresponding amplifying circuit
Alternative and the amplifying circuit alternative is shown on a display screen.
5. according to claim 3 a kind of for being adapted to the power amplifier chips adjustment method of loudspeaker, which is characterized in that the step
Simulation power amplification chip is calculated in rapid S3 and proposes the performance gap between meter loudspeaker, which is made based on performance gap offer
The step of putting the simulation power amplification chip improved design for the loudspeaker product that chip adapts to propose meter further include:
It is calculated as being adapted to the resistance value of the resistance for the filter circuit part that the loudspeaker for proposing meter should be serially connected with simulation power amplification chip, generate
In the filter circuit part of simulation power amplification chip, concatenation has the simulation power amplification chip debugging plan of the resistance of the resistance value, and aobvious
Show the screen display simulation power amplification chip debugging plan.
6. a kind of for being adapted to the power amplifier chips debugging system of loudspeaker, which is characterized in that the system comprises computers, simulation function
Put chip and oscillograph；
The computer generates sine wave test waveform for simulating, and sine wave test waveform is inputted analog amplifier core to be measured
Piece；
The simulation power amplification chip be used to amplify sine wave test waveform and demodulation process after be output to described show
It is shown on wave device；
The computer is also used to carry out analyzing and determining the simulation by the wave character to display waveform on the oscillograph
Whether power amplifier chips adapt to propose the loudspeaker product of meter and do not adapt to the loudspeaker production for proposing meter in the simulation power amplification chip
When product, the performance gap between the simulation power amplification chip and the loudspeaker product for proposing meter is calculated, is provided based on the performance gap
The simulation power amplification chip is set to adapt to propose the simulation power amplification chip improved design of the product of meter loudspeaker.
7. it is a kind of for being adapted to the simulation power amplification chip of loudspeaker by debugging, it is applied to power amplifier chips as claimed in claim 6
Debugging system, which is characterized in that the simulation power amplification chip includes:
Audio input port, including the first audio input port and the second audio input port, for receiving computer input
Sine wave test waveform；
Filter circuit, for being filtered to sine wave test waveform；
Amplifying circuit for carrying out power amplification processing to the sine wave test waveform through filtering, and exports modulated amplitude
The PWM waveform of increase；
Demodulator circuit, for carrying out demodulation process to the PWM waveform, to restore wave character and primary sinusoid test waveform
Wave character is identical, and the sinewave output waveform that amplitude increases.
8. according to claim 7 for being adapted to the simulation power amplification chip of loudspeaker by debugging, it is characterised in that:
The filter circuit includes first capacitor, the second capacitor, third capacitor, the 4th capacitor, first resistor, second resistance,
Three resistance, the 4th resistance, in which:
First resistor one end connects the third pin of amplifying circuit, and the first resistor other end connects first capacitor one end, the first electricity
Hold the other end and connects the first audio input port；
Second resistance one end connects the 4th pin of amplifying circuit, and the second resistance other end connects second capacitor one end, the second electricity
Hold other end ground connection；
3rd resistor one end connects the 11st pin of amplifying circuit, 3rd resistor other end third capacitor one end, third capacitor
Other end ground connection；
12nd pin of the 4th resistance one end connection amplifying circuit, the 4th capacitor one end of the 4th resistance other end connection, the 4th
The capacitor other end connects the second audio input port.
9. according to claim 7 for being adapted to the simulation power amplification chip of loudspeaker by debugging, it is characterised in that:
The demodulator circuit includes the first inductance, the second inductance, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th capacitor, the
Nine capacitors, the tenth capacitor, the 11st capacitor, the 12nd capacitor, the 13rd capacitor, the 14th capacitor, the 15th capacitor, the 16th
Capacitor, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, in which:
First inductance one end connects the 25th pin of amplifying circuit, and the first inductance other end connects the 13rd capacitor one end,
13rd capacitor other end ground connection；
12nd capacitor and the 8th capacitor are connected in series, and the 12nd capacitor one end connects the 26th pin of amplifying circuit, the
The eight capacitor other ends connect the 5th resistance one end, the 5th resistance other end ground connection；
Second inductance one end connects the 23rd pin of amplifying circuit, and the second inductance other end connects the 14th capacitor one end,
14th capacitor other end ground connection；
5th capacitor and the 9th capacitor are connected in series, and the 9th capacitor one end connects the 22nd pin of amplifying circuit, the 8th electricity
Hold the other end and connects the 6th resistance one end, the 6th resistance other end ground connection；
6th capacitor and the tenth capacitor are connected in series, and the 6th capacitor one end connects the 17th pin of amplifying circuit, the 8th capacitor
The other end connects the 7th resistance one end, the 7th resistance other end ground connection；
7th capacitor and the 11st capacitor are connected in series, the 21st pin of the 7th capacitor one end connection amplifying circuit, and the tenth
The one capacitor other end connects the 8th resistance one end, the 8th resistance other end ground connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209469.0A CN106162486B (en) | 2015-04-28 | 2015-04-28 | For being adapted to the power amplifier chips adjustment method and system, simulation power amplification chip of loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510209469.0A CN106162486B (en) | 2015-04-28 | 2015-04-28 | For being adapted to the power amplifier chips adjustment method and system, simulation power amplification chip of loudspeaker |
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| CN106162486A CN106162486A (en) | 2016-11-23 |
| CN106162486B true CN106162486B (en) | 2019-05-17 |
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| CN107708036B (en) * | 2017-11-08 | 2020-01-10 | 深圳市康冠商用科技有限公司 | Method and device for debugging output power of audio equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01135207A (en) * | 1987-11-20 | 1989-05-26 | Matsushita Electric Ind Co Ltd | Power amplifier |
| CN101834569A (en) * | 2010-05-12 | 2010-09-15 | 方炳钧 | Through type high-definition power amplifying circuit of sound system |
| CN102542888A (en) * | 2012-01-19 | 2012-07-04 | 西北工业大学 | Comprehensive electrotechnical and electronic technique experiment platform |
| CN203691554U (en) * | 2013-11-25 | 2014-07-02 | 东莞市奥源电子科技有限公司 | TV main board audio frequency output test system |
| CN104333837A (en) * | 2014-09-22 | 2015-02-04 | 深圳市江波龙电子有限公司 | Audio hardware equipment detection method and system |
-
2015
- 2015-04-28 CN CN201510209469.0A patent/CN106162486B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01135207A (en) * | 1987-11-20 | 1989-05-26 | Matsushita Electric Ind Co Ltd | Power amplifier |
| CN101834569A (en) * | 2010-05-12 | 2010-09-15 | 方炳钧 | Through type high-definition power amplifying circuit of sound system |
| CN102542888A (en) * | 2012-01-19 | 2012-07-04 | 西北工业大学 | Comprehensive electrotechnical and electronic technique experiment platform |
| CN203691554U (en) * | 2013-11-25 | 2014-07-02 | 东莞市奥源电子科技有限公司 | TV main board audio frequency output test system |
| CN104333837A (en) * | 2014-09-22 | 2015-02-04 | 深圳市江波龙电子有限公司 | Audio hardware equipment detection method and system |
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| CN106162486A (en) | 2016-11-23 |
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