CN111131964A - RC tuning frequency division circuit adjusted through switch - Google Patents
RC tuning frequency division circuit adjusted through switch Download PDFInfo
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- CN111131964A CN111131964A CN201911124765.5A CN201911124765A CN111131964A CN 111131964 A CN111131964 A CN 111131964A CN 201911124765 A CN201911124765 A CN 201911124765A CN 111131964 A CN111131964 A CN 111131964A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Abstract
The application discloses RC tuning frequency division circuit through switch adjustment includes: at least N +1 tuning frequency division modules connected in parallel; the tuning frequency division module is respectively connected with the input module; the tuning frequency division module comprises a power component for adjusting power, a filtering component corresponding to a filtering frequency band, and a sounding unit which are connected in sequence, or the filtering component corresponding to the filtering frequency band, the power component for adjusting power and the sounding unit which are connected in sequence, wherein the power component is provided with a power component switch controller for opening or closing the power component, and the filtering component switch controller is also provided with a part for opening or closing the filtering component. According to the frequency division method and device, the resistance value of the power component and the capacitance value of the filter component are changed, the frequency of the frequency division point of the tuning frequency division module and the frequency width between the tuning frequency division modules are improved, the frequency points of a plurality of tuning frequency divisions are obtained, and the tuning frequency division modules output sound signals of different frequency bands.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of tuning frequency division, in particular to an RC tuning frequency division circuit adjusted through a switch.
[ background of the invention ]
The resistance value and the capacity value in the existing RC tuning frequency division circuit are not changed, so the frequency range of frequency division is fixed, but the sound effect heard in bathrooms, dormitories, supermarkets, beaches and the like is different, and the adjustment of different frequency ranges is carried out on the requirements of different living areas to obtain better sound effect.
[ summary of the invention ]
The application will solve resistance and appearance value among the current RC tuning frequency division circuit and be unchangeable, therefore the frequency range of frequency division is fixed, but the sound effect of hearing in places such as bathhouse, dormitory, supermarket, beach is different, carries out the technical problem that the adjustment of different frequency ranges obtains better audio to the needs of different living areas, provides the RC tuning frequency division circuit through switch adjustment.
In order to solve the technical problem, the method is realized by the following technical scheme:
the invention provides an RC tuning frequency division circuit adjusted by a switch, which comprises:
at least N +1 tuning frequency division modules connected in parallel;
the tuning frequency division module is respectively connected with the input module;
the tuning frequency division module comprises a power component for adjusting power, a filtering component corresponding to a filtering frequency band, and a sound generating unit which are connected in sequence, or the filtering component corresponding to the filtering frequency band, the power component for adjusting power and the sound generating unit which are connected in sequence, wherein the power component is provided with a power component switch controller for opening or closing a part, the filtering component is also provided with a filtering component switch controller for opening or closing the part, the filtering component switch controller controls the power component switch controller and/or the filtering component switch controller is opened or closed, so that the tuning frequency division module outputs sound signals of different frequency bands.
The power component consists of at least two resistors connected in parallel, and the filtering component consists of at least two capacitors connected in parallel;
the power component switch controller is respectively arranged on a circuit where each resistor in the power component is positioned, and controls the on and off of each resistor so as to control the increase or decrease of the total resistance of the filter component;
the filter component switch controller is respectively arranged on a circuit where each capacitor in the filter component is positioned, and controls the on and off of each resistor so as to control the increase or decrease of the total capacitance value of the power component.
And the tuning frequency division module is a low-pass tuning frequency division module or a high-pass tuning frequency division module.
The filter component of the low-pass tuning frequency-dividing module comprises a capacitor C connected across the input module and the filter component1And with said capacitor C1Parallel connected capacitors C2Said capacitor C2And/or the capacitance C1And the capacitors C are respectively connected in series for switching on or off2Or the said capacitor C1The filter component switch controller;
the power component of the low-pass tuning frequency division module comprises a resistor R connected between the anode and the cathode of an audio loop at the rear end of the filter component in a bridging manner1And with said resistor R1Parallel connected resistors R2Said resistance R2And/or the resistance R1And resistors R for switching on or off are respectively connected in series2Or the resistance R1The power component switch controller.
The filter component of the high-pass tuning frequency-dividing module comprises a capacitor C connected across the input module and the filter component3And with said capacitor C3Parallel connected capacitors C4Said capacitor C4And/or the capacitance C3And the capacitors C are respectively connected in series for switching on or off4Or the said capacitor C3The filter component switch controller;
the power component of the high-pass tuning frequency division module comprises a resistor R connected between the positive electrode and the negative electrode of an audio loop at the rear end of the filter component in a bridging manner3And with said resistor R3Parallel connected resistors R4Said resistance R4And/or the resistance R3And resistors R for switching on or off are respectively connected in series4Or the resistance R3The power component switch controller.
The sounding unit is a combination of one or more of a moving-coil sounder, a moving-iron sounder, a piezoelectric ceramic sounding element, an electrostatic sounding unit and other sounding elements.
The power component switch controller and the filter component switch controller are both switches.
N is a positive integer.
Compared with the prior art, the application has the following advantages:
based on the technical scheme, the embodiment of the invention uses at least N +1 tuning frequency division modules, each tuning frequency division module comprises a power component for adjusting power, a filter component corresponding to a filter frequency band, and a sound generating unit which are connected in sequence or a filter component, a power component for adjusting power and a sound generating unit which are connected in sequence and correspond to the filter frequency band, a power component switch controller for switching on or off part of the power components is arranged on the power components, a filter component switch controller for switching on or off part of the filter components is also arranged on the filter components, the tuning frequency between the frequency division point frequency of the tuning frequency division module and the tuning frequency division module is improved by changing the resistance value of the power components and the capacitance value of the filter components, a plurality of frequency points of frequency division can be obtained, and each frequency division module outputs sound signals of different frequency bands, the problem of resistance and appearance value among the current RC tuning frequency division circuit do not change, therefore the frequency range of frequency division is fixed, can't be according to the change in place or better audio is solved.
[ description of the drawings ]
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of an RC tuning frequency division circuit adjusted by a switch according to the present application.
Fig. 2 is a schematic diagram of an embodiment of the RC tuning frequency-dividing circuit adjusted by a switch according to the present application.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.
Referring to fig. 1 to 2, the present application provides an RC tuning frequency division circuit adjusted by a switch, including: at least N +1 tuning frequency-division modules 20 connected in parallel; the tuning frequency division module 20 is respectively connected with the input module 10; tuning frequency division module 20 is including the power component 30 of the adjustment power that connects gradually, the power component 40 and the sound generating unit 50 that correspond with the filtering frequency channel or the power component 30 and the sound generating unit 50 that connect gradually and the filtering component 40 that correspond with the filtering frequency channel, the adjustment power, be equipped with on the power component 30 and be used for opening or close the part power component switch controller 60 of power component 30, still be equipped with on the filtering component 40 and be used for opening or close the part filtering component switch controller 70 of filtering component 40 controls power component switch controller 60 and/or opening or closing of filtering component switch controller 70 to make each tuning frequency division module 20 output the sound signal of different frequency channels.
In the embodiment of the invention, at least N +1 tuning frequency-division modules 10 are adopted, each tuning frequency-division module 10 comprises a power component 30 for adjusting power, a filter component 40 corresponding to a filter frequency band, and a sound-producing unit 50 which are sequentially connected, or a filter component 40 corresponding to a filter frequency band, a power component 30 for adjusting power, and a sound-producing unit 50 which are sequentially connected, a power component switch controller 60 for turning on or off part of the power component 30 is arranged on the power component 30, a filter component switch controller 70 for turning on or off part of the filter component 40 is also arranged on the filter component 40, the frequency of the 10 frequency-division point of the tuning frequency-division module and the frequency width between the tuning frequency-division modules are improved by changing the resistance value of the power component 30 and the capacitance value of the filter component 40, a plurality of frequency points of tuning frequency division can be obtained, and each tuning frequency-division module can output sound signals of different frequency, the problem of resistance and appearance value among the current RC tuning frequency division circuit do not change, therefore the frequency range of frequency division is fixed, can't be according to the change in place or better audio is solved.
In one embodiment, the power component 30 is composed of at least two resistors connected in parallel, and the filtering component 40 is composed of at least two capacitors connected in parallel; the power component switch controller 60 is respectively disposed on a line where each resistor in the power component 30 is located, and controls on and off of each resistor, so as to control increase or decrease of the total resistance of the filter component 30; the filter switch controller 70 is respectively disposed on a line where each capacitor in the filter assembly 40 is located, and controls on and off of each resistor, so as to control increase or decrease of the total capacitance value of the power assembly 30. The first switch controller 60 or the second switch controller 70 is turned on or off to control the capacitance or resistance of the branch circuit to be connected to the main circuit in parallel, so as to control the frequency and realize tuning. The frequency calculation formula in the tuning frequency division module 20 is
Wherein the resistance value of the power module 30 is calculated as
The capacitance value calculation formula of the filter module 40 is C ═ C1+C2……+CnThe frequency division value of the tuning frequency division module 20 is determined by the product of the resistance value of the power component 30 and the capacitance value of the filter component 40, the capacitor C is composed of at least two capacitors connected in parallel, the power component 30 is composed of at least two resistors connected in parallel,the frequency range and the frequency of the frequency division point can be changed by adjusting the change of the resistance value and the capacity value, the sound signal output of different frequency bands in the audio signal can be adjusted according to the difference pertinence of the individual users, and the individual differentiation requirement can be met.
In one embodiment, the filter assembly 40 of the low-pass tuning frequency-division module 210 includes a capacitor C connected across the input module 10 and the filter assembly 401And with said capacitor C1Parallel connected capacitors C2Said capacitor C2And/or the capacitance C1And the capacitors C are respectively connected in series for switching on or off2Or the said capacitor C1The filter component switch controller 70; the power component 30 of the low-pass tuning frequency-dividing module 210 comprises a resistor R connected between the positive pole and the negative pole of the audio loop at the rear end of the filter component 40 in a bridging manner1And with said resistor R1Parallel connected resistors R2Said resistance R2And/or the resistance R1And resistors R for switching on or off are respectively connected in series2Or the resistance R1The power component switch controller 60. The low-pass tuning frequency-dividing module 210 is a low-pass filter circuit, and the frequency calculation formula in the low-pass tuning frequency-dividing module 210 is
Wherein the resistance R in the formula is represented by the resistance R1Resistance R2Or by a resistor R1And a resistance R2The resistance value after parallel connection is determined, and the capacitance C in the frequency calculation formula is determined by the capacitance C1Capacitor C2Or by a capacitor C1And a capacitor C2Determining the capacitance value after parallel connection; therefore, nine low-frequency filtering frequency value states occur in total, 9 different frequency dividing points occur, the frequency value is improved, and a better output effect is obtained, wherein the nine low-frequency filtering frequency value states are respectively as follows:
first low frequency filter frequency value state:
at this time, the lowResistor R in tuning frequency-division block 2101And a capacitor C1The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the low-pass tuning frequency dividing module 210 is controlled by the resistor R1Resistance value of and the capacitance C1The magnitude of the product of the volume values is determined to be in an original state;
second low frequency filter frequency value state:
at this time, the resistor R in the low-pass tuning frequency-dividing module 2101And a capacitor C2The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the low-pass tuning frequency dividing module 210 is controlled by the resistor R1Resistance value of and the capacitance C2The capacitance value product of (C) determines the capacitance C1And a capacitor C2When the capacity values are the same, the frequency value of the frequency dividing point in the second low-frequency filtering frequency value state and the frequency value of the frequency dividing point in the first low-frequency filtering frequency value state are kept unchanged; capacitor C1And a capacitor C2When the capacitance values are different, the frequency value of the frequency dividing point in the state of the second low-frequency filter frequency value is different from the frequency value of the frequency dividing point in the state of the first low-frequency filter frequency value, and when the capacitance C is different2Is smaller than the capacitance C1When the value is greater than the value, the frequency value of the frequency dividing point in the second low-frequency filtering frequency value state is increased compared with the state of the first low-frequency filtering frequency value, and better sound effect output is obtained;
third low frequency filter frequency value state:
at this time, the resistor R in the low-pass tuning frequency-dividing module 2102And a capacitor C1The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the low-pass tuning frequency dividing module 210 is controlled by the resistor R2Resistance value of and the capacitance C1The magnitude of the product of the capacitance values, the resistance R1And a resistance R2When the resistance values are the same, the third is lowThe frequency dividing point frequency value of the frequency filtering frequency value state is the same as the frequency dividing point frequency value of the first low-frequency filtering frequency value state; resistance R1And a resistance R2When the resistance values are different, the frequency value of the frequency dividing point in the state of the third low-frequency filtering frequency value is different from the frequency value of the frequency dividing point in the state of the first low-frequency filtering frequency value, and when the resistance R is different2Is less than the resistance R1When the resistance value is smaller than the first resistance value, the frequency dividing point frequency value in the third low-frequency filtering frequency value state is higher than that in the first low-frequency filtering frequency value state, and better sound effect output is obtained;
fourth low frequency filter frequency value state:
at this time, the resistor R in the low-pass tuning frequency-dividing module 2102And a capacitor C2The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the low-pass tuning frequency dividing module 210 is controlled by the resistor R2Resistance value of and the capacitance C2The magnitude of the product of the capacitance values, the resistance R1And a resistance R2Have the same resistance value, and the capacitors C2And a capacitor C1When the capacitance values of the first low-frequency filter frequency value state and the second low-frequency filter frequency value state are the same, the frequency value of the frequency dividing point in the fourth low-frequency filter frequency value state is the same as the frequency value of the frequency dividing point in the first low-frequency filter frequency value state; resistance R1And a resistance R2Have different resistance values, or the capacitor C1And a capacitor C2When the capacitance values are different, the frequency value of the frequency dividing point in the state of the fourth low-frequency filtering frequency value is different from the frequency value of the frequency dividing point in the state of the first low-frequency filtering frequency value, and the resistor R2Resistance value of and the capacitance C2Is less than the resistance R1Resistance value of and the capacitance C1When the capacitance value is multiplied, the frequency value of the frequency dividing point in the fourth low-frequency filtering frequency value state is improved compared with the first low-frequency filtering frequency value state, and better sound effect output is obtained;
fifth low frequency filter frequency value state:
at this time, theResistor R in the low-pass tuning frequency-dividing module 2101Resistance R2And a capacitor C1The power module switch controller 60 and the filter module switch controller 70 of the corresponding line are closed, and the resistor R is connected2In parallel, the circuit frequency of the low-pass tuning frequency-dividing module 210 is controlled by the resistor R1And a resistance R2The resistance value of the parallel total resistor after parallel connection and the capacitor C1The magnitude of the capacitance-value product of (a), the resistance R1And a resistance R2When the resistance values are close, the resistance value is reduced, and the frequency dividing point frequency value in the fifth low-frequency filtering frequency value state is improved compared with the first low-frequency filtering frequency value state; the resistor R1And a resistor R2When the resistance values are greatly different, the resistance value of the parallel total resistor is close to and slightly smaller than the resistance R1And a resistance R2The lower middle resistance value reduces the total resistance value, and the frequency dividing point frequency value in the fifth low-frequency filtering frequency value state is improved compared with the first low-frequency filtering frequency value state, so that better sound effect output is obtained;
sixth low frequency filter frequency value state
At this time, the resistor R in the low-pass tuning frequency-dividing module 2101Resistance R2And a capacitor C2The power module switch controller 60 and the filter module switch controller 70 of the corresponding line are closed, and the resistor R is connected2In parallel, the circuit frequency of the low-pass tuning frequency-dividing module 210 is controlled by the resistor R1And a resistance R2The resistance value of the parallel total resistor after parallel connection and the capacitor C2The magnitude of the capacitance-value product of (a), the resistance R2And the resistance R1When the resistance values are close, the resistance value is reduced, the frequency value of the frequency dividing point in the sixth low-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the first low-frequency filtering frequency value state, and the resistor R2And the resistance R1When the resistance values are greatly different, the resistance value of the parallel total resistor is close to and slightly smaller than the resistance R1And a resistance R2Frequency division of the sixth low-frequency filter frequency value state with the smaller middle resistance value, reduced total resistance valueThe frequency value of the point is increased compared with the frequency value of the frequency dividing point in the state of the first low-frequency filtering frequency value; the capacitor C1And a capacitor C2When the capacitance values are the same, the frequency value of the frequency dividing point in the fifth low-frequency filtering frequency value state is the same as the frequency value of the frequency dividing point in the sixth low-frequency filtering frequency value state, and when the capacitance C is the same2Is smaller than the capacitance C1Then, the frequency value of the frequency dividing point in the sixth low-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the fifth low-frequency filtering frequency value state, so that better sound effect output is obtained;
seventh low frequency filter frequency value state:
at this time, the resistor R in the low-pass tuning frequency-dividing module 2101Capacitor C1And a capacitor C2The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the capacitor C2In parallel to the circuit, the total capacitance is a capacitor C1And a capacitor C2The sum of the capacitance values and the total capacitance value are increased, the frequency dividing point frequency value in the seventh low-frequency filtering frequency value state is reduced compared with the frequency dividing point frequency value in the first low-frequency filtering frequency value state, the frequency widths of the low-pass tuning frequency dividing module 210 and the high-pass tuning frequency dividing module 220 are increased, and better sound effect output is obtained;
eighth low frequency filter frequency value state:
at this time, the resistor R in the low-pass tuning frequency-dividing module 2102Capacitor C1And a capacitor C2The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the capacitor C2In the circuit, the total capacitance is a capacitor C1And a capacitor C2The sum of the capacitance values and the total capacitance value are increased, the frequency dividing point frequency value in the eighth low-frequency filter frequency value state is reduced compared with the frequency dividing point frequency value in the fourth low-frequency filter frequency value state, the frequency widths of the low-pass tuning frequency dividing module 210 and the first tuning frequency dividing module 210 are increased, and a better sound effect is obtainedAn output of (d);
ninth low frequency filter frequency value state:
at this time, the resistor R in the low-pass tuning frequency-dividing module 2101Resistance R2Resistance R1And a resistance R2The power module switch controller 60 and the filter module switch controller 70 of the corresponding line are closed, and the resistor R is connected2And a capacitor C2Connected in parallel in the circuit by setting a resistor R1And a resistance R2Resistance value of, and a capacitor C1And a capacitor C2Capacity value, frequency values of frequency dividing points with different sizes are realized,
is less than R1C1Then, the frequency value of the frequency dividing point in the ninth low-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the first low-frequency filtering frequency value state,
is greater than R1C1And the frequency dividing point frequency value in the ninth low-frequency filtering frequency value state is between the fifth low-frequency filtering frequency value state and the eighth low-frequency filtering frequency value state, so that the low-pass tuning frequency dividing module 210 can bounce in the secondary frequency range, and the sound signal output of different frequency bands in the audio signal can be adjusted according to the difference of individual users, thereby adapting to the requirement of individual differentiation.
In one embodiment, the filter assembly 40 of the high-pass tuning frequency-dividing module 220 includes a capacitor C connected across the input module 10 and the filter assembly 403And with said capacitor C3Parallel connected capacitors C4Said capacitor C4And/or the capacitance C3And the capacitors C are respectively connected in series for switching on or off4Or the said capacitor C3Filter bank ofA part switch controller 70; the power assembly 30 of the high-pass tuning frequency-dividing module 220 comprises a resistor R connected between the positive pole and the negative pole of the audio loop at the rear end of the filter assembly 40 in a bridging manner3And with said resistor R3Parallel connected resistors R4Said resistance R4And/or the resistance R3And resistors R for switching on or off are respectively connected in series4Or the resistance R3The power component switch controller 60. The high-pass tuning frequency-dividing module 220 is a high-pass filter circuit, and the frequency calculation formula in the high-pass tuning frequency-dividing module 220 is
Wherein the resistance R in the formula is represented by the resistance R3Resistance R4Or by a resistor R3And a resistance R4The resistance value after parallel connection is determined, and the capacitance C in the frequency calculation formula is determined by the capacitance C3Capacitor C4Or by a capacitor C3And a capacitor C4Determining the capacitance value after parallel connection; therefore, nine high-frequency filtering frequency value states occur in total, 9 different frequency dividing points occur, the frequency value is improved, and a better output effect is obtained, wherein the nine high-frequency filtering frequency value states are respectively as follows:
first high-frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2203And a capacitor C3The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the high-pass tuning frequency dividing module 220 is obtained by the resistor R3Resistance value of and the capacitance C3The magnitude of the product of the volume values is determined to be in an original state;
second high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2203And a capacitor C4Power assembly corresponding to lineThe switch controller 60 and the filter component switch controller 70 are closed, and the frequency dividing point frequency value of the high-pass tuning frequency dividing module 220 is controlled by the resistor R3Resistance value of and the capacitance C4The capacitance value product of (C) determines the capacitance C4And a capacitor C3When the capacity values of the first high-frequency filtering frequency value state and the second high-frequency filtering frequency value state are the same, the frequency dividing point frequency value of the second high-frequency filtering frequency value state and the frequency dividing point frequency value of the first high-frequency filtering frequency value state are kept unchanged; capacitor C4And a capacitor C3When the capacitance values are different, the frequency value of the frequency dividing point in the state of the second high-frequency filtering frequency value is different from the frequency value of the frequency dividing point in the state of the first high-frequency filtering frequency value, and when the capacitance C is different4Is smaller than the capacitance C3When the capacitance value is greater than the first capacitance value, the frequency value of the frequency dividing point in the second high-frequency filtering frequency value state is increased compared with the first high-frequency filtering frequency value state, and better sound effect output is obtained;
third high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2204And a capacitor C3The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the high-pass tuning frequency dividing module 220 is obtained by the resistor R4Resistance value of and the capacitance C3The magnitude of the product of the capacitance values, the resistance R3And a resistance R4When the resistance values are the same, the frequency value of the frequency dividing point in the state of the third high-frequency filtering frequency value is the same as the frequency value of the frequency dividing point in the state of the first high-frequency filtering frequency value; resistance R3And a resistance R4When the resistance values are different, the frequency value of the frequency dividing point in the state of the third high-frequency filtering frequency value is different from the frequency value of the frequency dividing point in the state of the first high-frequency filtering frequency value, and when the resistance R is different4Is less than the capacitance C3When the resistance value is smaller than the first resistance value, the frequency dividing point frequency value in the third high-frequency filtering frequency value state is higher than that in the first high-frequency filtering frequency value state, and better sound effect output is obtained;
fourth high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2204And a capacitor C4The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the frequency dividing point frequency value of the high-pass tuning frequency dividing module 220 is obtained by the resistor R4Resistance value of and the capacitance C4The magnitude of the product of the capacitance values, the resistance R3And a resistance R4Have the same resistance value, and the capacitors C4And a capacitor C3When the capacitance values are the same, the frequency value of the frequency dividing point in the fourth high-frequency filtering frequency value state is the same as the frequency value of the frequency dividing point in the first high-frequency filtering frequency value state; resistance R3And a resistance R4Have different resistance values, or the capacitor C4And a capacitor C3When the capacitance values are different, the frequency value of the frequency dividing point in the state of the fourth high-frequency filtering frequency value is different from the frequency value of the frequency dividing point in the state of the first high-frequency filtering frequency value, and the resistor R4Resistance value of and the capacitance C4Is less than the resistance R3Resistance value of and the capacitance C3When the capacitance value is multiplied, the frequency value of the frequency dividing point in the fourth high-frequency filtering frequency value state is improved compared with the first high-frequency filtering frequency value state, and better sound effect output is obtained;
fifth high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2203Resistance R4And a capacitor C3The power module switch controller 60 and the filter module switch controller 70 of the corresponding line are closed, and the resistor R is connected4In parallel to the circuit, the circuit frequency of the high-pass tuning frequency-dividing module 220 is controlled by the resistor R3And a resistance R4The resistance value of the parallel total resistor after parallel connection and the capacitor C3The magnitude of the capacitance-value product of (a), the resistance R4And the resistance R3When the resistance values are close, the resistance values are reduced, and the frequency dividing point frequency value in the fifth high-frequency filtering frequency value state is higher than that in the first high-frequency filtering frequency value state; the resistor R4And the placeThe resistance R3When the resistance values are greatly different, the resistance value of the parallel total resistor is close to and slightly smaller than the resistance R4And the resistance R3The lower middle resistance value reduces the total resistance value, and the frequency dividing point frequency value in the fifth high-frequency filtering frequency value state is improved compared with the first high-frequency filtering frequency value state, so that better sound effect output is obtained;
sixth high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2203Resistance R4And a capacitor C4The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, the resistor R4 is connected in parallel into the circuit, and the circuit frequency of the high-pass tuning frequency-dividing module 220 is controlled by the resistor R3And a resistance R4The resistance value of the parallel total resistor after parallel connection and the capacitor C4The magnitude of the capacitance-value product of (a), the resistance R4And the resistance R3When the resistance values are close, the resistance value is reduced, the frequency value of the frequency dividing point in the sixth high-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the first high-frequency filtering frequency value state, and the resistor R4And the resistance R3When the resistance values are greatly different, the resistance value of the parallel total resistor is close to and slightly smaller than the resistance R4And the resistance R3The total resistance value is reduced when the middle resistance value is smaller, and the frequency value of the frequency dividing point in the sixth high-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the first high-frequency filtering frequency value state; the capacitor C4And a capacitor C3When the capacitance values are the same, the frequency value of the frequency dividing point in the state of the fifth high-frequency filtering frequency value is the same as the frequency value of the frequency dividing point in the state of the sixth high-frequency filtering frequency value, and when the capacitance C is the same4Is smaller than the capacitance C3Then, the frequency value of the frequency dividing point in the sixth high-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the fifth high-frequency filtering frequency value state, so that better sound effect output is obtained;
seventh high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2203Capacitor C3And a capacitor C4The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the capacitor C4In parallel to the circuit, the total capacitance is a capacitor C3And a capacitor C4The sum of the capacitance values and the total capacitance value are increased, the frequency dividing point frequency value in the seventh high-frequency filtering frequency value state is increased compared with the frequency dividing point frequency value in the first high-frequency filtering frequency value state, the widths of the frequencies of the high-pass tuning frequency dividing module 220 and the frequency of the first tuning frequency dividing module 210 are increased, and better sound effect output is obtained;
eighth high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2204Capacitor C3And a capacitor C4The power component switch controller 60 and the filter component switch controller 70 of the corresponding line are closed, and the capacitor C4In parallel to the circuit, the total capacitance is a capacitor C3And a capacitor C4The sum of the capacitance values and the total capacitance value are increased, the frequency dividing point frequency value in the eighth high-frequency filtering frequency value state is increased compared with the frequency dividing point frequency value in the first high-frequency filtering frequency value state, the widths of the frequencies of the high-pass tuning frequency dividing module 220 and the frequency of the first tuning frequency dividing module 210 are increased, and better sound effect output is obtained;
ninth high frequency filter frequency value state:
at this time, the resistor R in the high-pass tuning frequency-dividing module 2203Resistance R4Capacitor C3And a capacitor C4The power module switch controller 60 and the filter module switch controller 70 of the corresponding line are closed, and the resistor R is connected4And a capacitor C4Connected in parallel in the circuit by setting a resistor R3And a resistance R4Resistance value of, and a capacitor C3And a capacitor C4Capacity value, frequency values of frequency dividing points with different sizes are realized,
is less than R3C3Then, the frequency value of the frequency dividing point in the ninth high-frequency filtering frequency value state is increased compared with the frequency value of the frequency dividing point in the first high-frequency filtering frequency value state,
is greater than R3C3And then, the frequency dividing point frequency value in the ninth high-frequency filtering frequency value state is between the fifth high-frequency filtering frequency value state and the eighth high-frequency filtering frequency value state, so that the high-pass tuning frequency dividing module 220 can bounce in the secondary frequency range, the sound signals in different frequency bands in the audio signals can be adjusted according to the difference of individual users, and the individual differentiation requirements can be met. In this embodiment, the frequency dividing point of the low-frequency circuit has nine changes, and the frequency dividing point of the high-frequency circuit also has nine changes, including the same situation, there may be 81 changes in total, and the sound signal output of different frequency bands in the audio signal is adjusted in a targeted manner according to the difference of individual users, so as to meet the requirement of individual differentiation.
In one embodiment, the sound generating unit 50 is a combination of one or more sound generating elements such as a moving coil type sound generator, a moving iron type sound generator, a piezoelectric ceramic sound generating element, and an electrostatic sound generating unit. Moving coil formula sounder moves indisputable formula sounder, piezoceramics sound generating component, sound generating component such as electrostatic sound production unit pass through the filtering of electric capacity and resistance and the output that increases frequency and realize better sound signal, moreover the rear end of low pass tuning frequency division module 210 or high pass tuning frequency division module 220 can connect the drive circuit drive of a plurality of differences moving coil formula sounder moves indisputable formula sounder, piezoceramics sound generating component, one among the sound generating component such as electrostatic sound production unit, perhaps switches on a plurality ofly simultaneously, improves sound signal's output.
In one embodiment, the power module switch controller 60 and the filter module switch controller 70 are both switches.
The capacitor or the circuit in the branch circuit is required to be continuously connected with the main circuit, so that the contact switch can be triggered only by a single point through the self-locking switch with the self-locking function, and the requirement is not met.
N is a positive integer. The situation that only one high-frequency circuit or low-frequency circuit exists is avoided, and the frequency division circuit cannot be formed.
As described above, the embodiments of the present application have been described in detail, but the present application is not limited to the above embodiments. Even if various changes are made in the present application, the protection scope of the present application is still included.
Claims (8)
1. An RC tuning divider circuit adjusted by a switch, comprising:
at least N +1 tuning frequency-dividing modules (20) connected in parallel;
the tuning frequency division module (20) is respectively connected with the input module (10);
the tuning frequency division module (20) respectively comprises a power component (30) for adjusting power, a filter component (40) corresponding to a filter frequency band, a sound production unit (50) or a filter component (40) corresponding to a filter frequency band, a power component (30) for adjusting power and a sound production unit (50) which are connected in sequence, the power component (30) is provided with a power component switch controller (60) for switching on or off part of the power component (30), the filter component (40) is further provided with a filter component switch controller (70) for turning on or off part of the filter component (40), and the power component switch controller (60) and/or the filter component switch controller (70) are controlled to be turned on or turned off, so that the tuning frequency division modules (20) output sound signals of different frequency bands.
2. The RC tuning divider circuit through switch adjustment according to claim 1, wherein: the power component (30) is composed of at least two resistors connected in parallel, and the filtering component (40) is composed of at least two capacitors connected in parallel;
the power component switch controller (60) is respectively arranged on a circuit where each resistor in the power component (30) is located, and controls the on and off of each resistor so as to control the increase or decrease of the total resistance of the filter component (30);
the filter component switch controller (70) is respectively arranged on a circuit where each capacitor in the filter component (40) is located, and controls the on and off of each resistor so as to control the increase or decrease of the total capacitance value of the power component (30).
3. The RC tuning divider circuit through switch adjustment according to claim 2, wherein: the tuning frequency division module (20) is a low-pass tuning frequency division module (210) or a high-pass tuning frequency division module (220).
4. The RC tuning divider circuit through switch adjustment according to claim 3, wherein: the filter assembly (40) of the low-pass tuning frequency-division module (210) comprises a capacitance C connected across the input module (10) and the filter assembly (40)1And with said capacitor C1Parallel connected capacitors C2Said capacitor C2And/or the capacitance C1And the capacitors C are respectively connected in series for switching on or off2Or the said capacitor C1A filter component switch controller (70);
the power component (30) of the low-pass tuning frequency division module (210) comprises a resistor R connected with the positive electrode and the negative electrode of an audio loop at the rear end of the filtering component (40) in a bridging manner1And with said resistor R1Parallel connected resistors R2Said resistance R2And/or the resistance R1And resistors R for switching on or off are respectively connected in series2Or the resistance R1The power component switch controller (60).
5. The RC tuning divider circuit through switch adjustment according to claim 3, wherein: the filter assembly (40) of the high-pass tuning frequency-division module (220) comprises a capacitor C connected across the input module (10) and the filter assembly (40)3To do so byAnd the capacitor C3Parallel connected capacitors C4Said capacitor C4And/or the capacitance C3And the capacitors C are respectively connected in series for switching on or off4Or the said capacitor C3A filter component switch controller (70);
the power component (30) of the high-pass tuning frequency division module (220) comprises a resistor R connected with the positive electrode and the negative electrode of an audio loop at the rear end of the filtering component (40) in a bridging manner3And with said resistor R3Parallel connected resistors R4Said resistance R4And/or the resistance R3And resistors R for switching on or off are respectively connected in series4Or the resistance R3The power component switch controller (60).
6. The RC tuning divider circuit through switch adjustment according to claim 1, wherein: the sounding unit (50) is a combination of one or more sounding elements such as a moving coil type sounding device, a moving iron type sounding device, a piezoelectric ceramic sounding element and an electrostatic sounding unit.
7. The RC tuning divider circuit through switch adjustment according to claim 1, wherein: the power module switch controller (60) and the filter module switch controller (70) are both switches.
8. The RC tuning divider circuit through switch adjustment according to claim 1, wherein: n is a positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911124765.5A CN111131964A (en) | 2019-11-18 | 2019-11-18 | RC tuning frequency division circuit adjusted through switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911124765.5A CN111131964A (en) | 2019-11-18 | 2019-11-18 | RC tuning frequency division circuit adjusted through switch |
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| CN201911124765.5A Pending CN111131964A (en) | 2019-11-18 | 2019-11-18 | RC tuning frequency division circuit adjusted through switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114499436A (en) * | 2021-02-05 | 2022-05-13 | 井芯微电子技术(天津)有限公司 | Passive crystal frequency trimming circuit |
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2019
- 2019-11-18 CN CN201911124765.5A patent/CN111131964A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114499436A (en) * | 2021-02-05 | 2022-05-13 | 井芯微电子技术(天津)有限公司 | Passive crystal frequency trimming circuit |
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Address after: 3 / F, No.13, Maonan Road, Torch Development Zone, Zhongshan City, Guangdong Province 528400 Applicant after: Tianjian medical technology (Guangdong) Co.,Ltd. Address before: 3 / F, No.13, Maonan Road, Torch Development Zone, Zhongshan City, Guangdong Province 528400 Applicant before: ZHONGSHAN TIANJIAN COMMUNICATION TECHNOLOGY Co.,Ltd. |