CN113904636A - Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions - Google Patents
Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions Download PDFInfo
- Publication number
- CN113904636A CN113904636A CN202111236581.5A CN202111236581A CN113904636A CN 113904636 A CN113904636 A CN 113904636A CN 202111236581 A CN202111236581 A CN 202111236581A CN 113904636 A CN113904636 A CN 113904636A
- Authority
- CN
- China
- Prior art keywords
- amplifier
- resistor
- power amplifier
- polar capacitor
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000694 effects Effects 0.000 title claims abstract description 39
- 238000001914 filtration Methods 0.000 title claims abstract description 21
- 230000004048 modification Effects 0.000 title claims description 4
- 238000012986 modification Methods 0.000 title claims description 4
- 239000003990 capacitor Substances 0.000 claims abstract description 58
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 30
- 230000003321 amplification Effects 0.000 claims description 27
- DFBKLUNHFCTMDC-GKRDHZSOSA-N endrin Chemical compound C([C@@H]1[C@H]2[C@@]3(Cl)C(Cl)=C([C@]([C@H]22)(Cl)C3(Cl)Cl)Cl)[C@@H]2[C@H]2[C@@H]1O2 DFBKLUNHFCTMDC-GKRDHZSOSA-N 0.000 claims description 5
- 230000007812 deficiency Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a high-frequency filtering harmonic-wave-generating power amplifier capable of modifying high-frequency signal effect, which comprises a function board arranged in a power amplifier, wherein the function board is provided with a high-frequency filtering harmonic-wave generating module, a main control module, a power amplifier pre-stage amplifying module and a power amplifier post-stage amplifying module, the main control module comprises a main control chip U1, a polar capacitor C5, a polar capacitor C6, a polar capacitor C7 and a polar capacitor C8, and the high-frequency filtering harmonic-wave generating module comprises an amplifier IC1A, an amplifier IC1B, an amplifier IC2A and an amplifier IC 2B. The invention restores the music and the voice, does not change the voice frequency of the music, only repairs the lack and the deficiency of the sound effect of the tweeter, leads the music to have ideal reducibility, improves the sound box effect with poor high-pitch sound quality for the final integral action after the music or the synthesis of the music and the voice, reduces the purchase cost of the sound box, and leads the sound box to obtain the effect similar to a high-grade sound box.
Description
Technical Field
The invention relates to the technical field of power amplifiers, in particular to a power amplifier capable of generating harmonic waves and filtering high frequency and modifying the effect of high frequency signals.
Background
The existing karaoke power amplifier and effect device only aim at beautifying the sound of a microphone singer, and aim at enabling the voice before sound mixing to be acted with the beautifying of the music, but not allowing the effect function of processing the voice to enter the music, otherwise, the music can be changed and is difficult to listen, and is not clear, the power amplifiers can cause the frequency change of the sound, can not repair the deficiency and the deficiency of the sound effect of a tweeter, damage the reducibility of the music, the reducibility of the sound effect is poor, the desire of a part of people to feel better music can not be met, meanwhile, the power amplifiers require the high quality of a sound box, if the requirements are the high-quality power amplifier and the sound box, the purchase cost of the sound box is high, and the experience of consumers is influenced. Therefore, there is a need for improvements in the prior art to avoid the disadvantages of the prior art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a harmonic-generating power amplifier which improves the sound reduction effect, reduces the use cost of a sound box, performs high-frequency filtering and can modify the effect of high-frequency signals.
The invention is realized by the following technical scheme:
the utility model provides a high frequency filters and can decorate power amplifier of production harmonic of high frequency signal effect, is including setting up the function board in the power amplifier, the function board is equipped with high frequency filters and harmonic and produces module, main control module, power amplifier preceding stage amplification module and power amplifier back stage amplification module, main control module includes main control chip U1, polarity electric capacity C5, polarity electric capacity C6, polarity electric capacity C7 and polarity electric capacity C8, high frequency filters and harmonic produces the module including amplifier IC1A, amplifier IC1B, amplifier IC2A and amplifier IC2B, power amplifier preceding stage amplification module includes amplifier IC3A, amplifier IC3B, amplifier IC4A, amplifier IC4B, amplifier IC1C and amplifier IC2C, power amplifier back stage amplification module includes amplifier IC1D, amplifier IC2D, polarity electric capacity C13 and polarity electric capacity C14.
Further, the model of the master control chip U1 is IC 571N.
Further, a negative input end LIN of the amplifier IC1A is connected, an output end of the amplifier IC1A is connected to a negative input end LIN of the amplifier IC1B, a negative input end RIN of the amplifier IC2A is connected, and an output end of the amplifier IC2A is connected to a negative input end RIN of the amplifier IC 2B.
Further, the negative electrode of the polar capacitor C5 is connected to the output terminal of the amplifier IC1B, the positive electrode of the polar capacitor C5 is connected to the fourteenth pin of the main control chip U1, the negative electrode of the polar capacitor C6 is connected to the output terminal of the amplifier IC2B, and the positive electrode of the polar capacitor C6 is connected to the third pin of the main control chip U1.
Furthermore, the negative electrode of the polar capacitor C5 is connected to the positive input terminal of the amplifier IC3A through a resistor R15, the output terminal of the amplifier IC3A is connected to the positive input terminal of the amplifier IC3B through a resistor R25, the output terminal of the amplifier IC3B is connected to the output terminal of the amplifier IC3A through a resistor R41 and a resistor R27, the negative electrode of the polar capacitor C6 is connected to the positive input terminal of the amplifier IC4A through a resistor R16, the output terminal of the amplifier IC4A is connected to the positive input terminal of the amplifier IC4B through a resistor R26, and the output terminal of the amplifier IC4B is connected to the output terminal of the amplifier IC4A through a resistor R41 and a resistor R27.
Further, the negative electrode of the polar capacitor C5 is connected to the negative input terminal of the amplifier IC1C through a resistor R21, the output terminal of the amplifier IC1C is connected to the negative input terminal of the amplifier IC1D through an adjustable resistor RP3A, the negative electrode of the polar capacitor C6 is connected to the negative input terminal of the amplifier IC2C through a resistor R22, and the output terminal of the amplifier IC2C is connected to the negative input terminal of the amplifier IC2D through an adjustable resistor RP 3B.
Further, the negative electrode of the polar capacitor C7 is connected to the negative input terminal of the amplifier IC1C through a resistor 29 and a resistor 31, the positive electrode of the polar capacitor C7 is connected to the tenth pin of the main control chip U1, the negative electrode of the polar capacitor C8 is connected to the negative input terminal of the amplifier IC2C through a resistor 30 and a resistor 32, and the positive electrode of the polar capacitor C8 is connected to the seventh pin of the main control chip U1.
Further, a negative electrode of the polar capacitor C13 is connected to the output terminal LOUT, a positive electrode of the polar capacitor C13 is connected to the output terminal of the amplifier IC1D through the resistor R49, a negative electrode of the polar capacitor C14 is connected to the output terminal ROUT, and a positive electrode of the polar capacitor C14 is connected to the output terminal of the amplifier IC2D through the resistor R50.
Further, a switch SW1 is arranged between the connection of the power amplifier pre-stage amplification module and the power amplifier post-stage amplification module.
Further, the output end of the amplifier IC1A is grounded through a resistor R7, a resistor R9, an adjustable resistor RP2A and a resistor R5, and the output end of the amplifier IC2A is grounded through a resistor R8, a resistor R10, an adjustable resistor RP2B and a resistor R6.
Compared with the prior art, the high-frequency filtering and harmonic generation module, the main control module, the power amplifier pre-stage amplification module and the power amplifier post-stage amplification module are arranged to restore music and human voice, the sound frequency of the music cannot be changed, only the lack and the deficiency of the sound effect of the tweeter are repaired, the music has ideal reducibility, the effect of the sound box with poor high-pitch sound quality can be improved for the final integral action after the music or the synthesis of the music and the human voice, the purchase cost of the sound box is reduced, and the sound box can obtain the effect similar to a high-grade sound box, and the high-frequency filtering and harmonic generation module has the following beneficial effects:
1. the high-frequency harmonic generator is not limited to be designed mainly by one or more high-frequency (more than 1kHz to 20kHz) harmonic generators, and the high-frequency harmonic generator can be used as long as high-frequency harmonics are generated in other functions.
2. Obtain the power from the power amplifier, installation convenient to use.
3. The function board is arranged on the power amplifier, the power amplifier is not divided into any type of power amplifier, including a power amplifier with a sound console or a power amplifier with a processor function, and the like, including a front-stage power amplifier and a rear-stage power amplifier of the power amplifier, and the application range is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the control of a harmonic-generating power amplifier for high-frequency filtering and modifying the effect of high-frequency signals according to the present invention;
fig. 2 is a schematic circuit diagram of a harmonic-generating power amplifier for high-frequency filtering and modifying the effect of high-frequency signals according to the present invention.
In the figure: 1-high frequency filtering and harmonic generating module; 2-a main control module; 3-power amplifier pre-stage amplifying module; 4-power amplifier post-stage amplification module.
Detailed Description
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 of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the harmonic-generating power amplifier with high-frequency filtering and capable of modifying the effect of high-frequency signals of the present invention includes a function board disposed in the power amplifier, the function board is provided with a high-frequency filtering and harmonic-generating module 1, a main control module 2, a power amplifier pre-amplification module 3 and a power amplifier post-amplification module 4, the main control module 2 includes a main control chip U1, a polar capacitor C5, a polar capacitor C6, a polar capacitor C7 and a polar capacitor C8, the high-frequency filtering and harmonic-generating module 1 includes an amplifier IC1A, an amplifier IC1B, an amplifier IC2A and an amplifier IC2B, the power amplifier pre-amplification module 3 includes an amplifier IC3A, an amplifier IC3B, an amplifier IC4A, an amplifier IC4B, an amplifier IC1C and an amplifier IC2C, and the power amplifier post-amplification module 4 includes an amplifier IC1D, an amplifier IC2D, a polar capacitor C13 and a polar capacitor C14. Through setting up high frequency filter and harmonic generation module 1, host system 2, power amplifier preceding stage amplification module 3 and power amplifier rear stage amplification module 4 restore music and voice, can not change the sound frequency of music itself, only repair tweeter sound effect and lack and not enough, let the music have the reductibility of an ideal, for the whole emergence effect after final music or music and the synthesis of voice, can improve the poor audio amplifier effect of high pitch tone quality, reduce the purchase cost of audio amplifier, make it obtain the effect of similar high-grade audio amplifier, have following beneficial effect:
1. the high-frequency harmonic generator is not limited to be designed mainly by one or more high-frequency (more than 1kHz to 20kHz) harmonic generators, and the high-frequency harmonic generator can be used as long as high-frequency harmonics are generated in other functions.
2. Obtain the power from the power amplifier, installation convenient to use.
3. The function board is arranged on the power amplifier, the power amplifier is not divided into any type of power amplifier, including a power amplifier with a sound console or a power amplifier with a processor function, and the like, including a front-stage power amplifier and a rear-stage power amplifier of the power amplifier, and the application range is wide.
As a specific implementation, the model of the main control chip U1 is IC 571N.
The negative input end LIN of the amplifier IC1A, the output end of the amplifier IC1A are connected with the negative input end of the amplifier IC1B, the negative input end RIN of the amplifier IC2A is connected with the input end RIN, and the output end of the amplifier IC2A is connected with the negative input end of the amplifier IC2B, so that the input connection of high-frequency filtering and harmonic generation module 1 is facilitated.
The negative electrode of the polar capacitor C5 is connected with the output end of the amplifier IC1B, the positive electrode of the polar capacitor C5 is connected with the fourteenth pin of the main control chip U1, the negative electrode of the polar capacitor C6 is connected with the output end of the amplifier IC2B, and the positive electrode of the polar capacitor C6 is connected with the third pin of the main control chip U1, so that the connection and protection between the high-frequency filtering and harmonic generation module 1 and the main control module 2 are facilitated.
The negative electrode of the polar capacitor C5 is connected to the positive input end of the amplifier IC3A through a resistor R15, the output end of the amplifier IC3A is connected to the positive input end of the amplifier IC3B through a resistor R25, the output end of the amplifier IC3B is connected to the output end of the amplifier IC3A through a resistor R41 and a resistor R27, the negative electrode of the polar capacitor C6 is connected to the positive input end of the amplifier IC4A through a resistor R16, the output end of the amplifier IC4A is connected to the positive input end of the amplifier IC4B through a resistor R26, the output end of the amplifier IC4B is connected to the output end of the amplifier IC4A through a resistor R41 and a resistor R27, which is beneficial to connection and protection between the main control module 2 and the power amplifier pre-stage amplification module 3.
The negative electrode of the polar capacitor C5 is connected with the negative electrode input end of the amplifier IC1C through a resistor R21, the output end of the amplifier IC1C is connected with the negative electrode input end of the amplifier IC1D through an adjustable resistor RP3A, the negative electrode of the polar capacitor C6 is connected with the negative electrode input end of the amplifier IC2C through a resistor R22, the output end of the amplifier IC2C is connected with the negative electrode input end of the amplifier IC2D through an adjustable resistor RP3B, and the output amplification factor of the power amplifier pre-stage amplification module 3 is adjusted.
The negative electrode of the polar capacitor C7 is connected with the negative electrode input end of the amplifier IC1C through the resistor 29 and the resistor 31, the positive electrode of the polar capacitor C7 is connected with the tenth pin of the main control chip U1, the negative electrode of the polar capacitor C8 is connected with the negative electrode input end of the amplifier IC2C through the resistor 30 and the resistor 32, the positive electrode of the polar capacitor C8 is connected with the seventh pin of the main control chip U1, and the amplification effect of the pre-stage amplification module 3 of the power amplifier is balanced and adjusted.
The negative electrode of the polar capacitor C13 is connected with the output end LOUT, the positive electrode of the polar capacitor C13 is connected with the output end of the amplifier IC1D through the resistor R49, the negative electrode of the polar capacitor C14 is connected with the output end ROUT, and the positive electrode of the polar capacitor C14 is connected with the output end of the amplifier IC2D through the resistor R50, so that the output of the post-amplification module 4 of the power amplifier is more stable.
A switch SW1 is arranged between the connection of the power amplifier pre-stage amplification module 3 and the power amplifier post-stage amplification module 4 for turning off the high-frequency filtering and amplification effects.
The output end of the amplifier IC1A is grounded through a resistor R7, a resistor R9, an adjustable resistor RP2A and a resistor R5, and the output end of the amplifier IC2A is grounded through a resistor R8, a resistor R10, an adjustable resistor RP2B and a resistor R6, so that the input high-frequency harmonic is prevented from being overhigh, and the function of adjustment and protection is achieved.
The specific implementation is that the function board is installed in the power amplifier, and a position which avoids generating noise is found and fixed. This function board is long 8 centimetres, and 7 centimetres wide installs near the best of input signal terminal behind in the power amplifier, is equipped with adjustment original paper and effect switch on this function board, adjusts the good effect, or adjusts the good effect after fixed in advance, also can select the components and parts replacement adjustable original paper of fixed parameter for use, then with this function board install in the power amplifier can. The function board is installed in the power amplifier and can be provided with a switch for switching off the effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A harmonic-producing power amplifier with high-frequency filtering and high-frequency signal modification, comprising: including setting up the function board in the power amplifier machine, the function board is equipped with high frequency filtering and harmonic and produces module, master control module, power amplifier preceding stage amplification module and power amplifier back stage amplification module, master control module includes main control chip U1, polar capacitance C5, polar capacitance C6, polar capacitance C7 and polar capacitance C8, high frequency filtering and harmonic produce the module including amplifier IC1A, amplifier IC1B, amplifier IC2A and amplifier IC2B, power amplifier preceding stage amplification module includes amplifier IC3A, amplifier IC3B, amplifier IC4A, amplifier IC4B, amplifier IC1C and amplifier IC2C, power amplifier back stage amplification module includes amplifier IC1D, amplifier IC2D, polar capacitance C13 and polar capacitance C14.
2. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the model of the main control chip U1 is IC 571N.
3. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the negative input end LIN of the amplifier IC1A is connected with the output end of the amplifier IC1A, the negative input end of the amplifier IC1B is connected with the output end of the amplifier IC2A, the negative input end RIN of the amplifier IC2A is connected with the output end of the amplifier IC2A, and the negative input end of the amplifier IC2B is connected with the output end of the amplifier IC 2A.
4. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the negative electrode of the polar capacitor C5 is connected with the output end of the amplifier IC1B, the positive electrode of the polar capacitor C5 is connected with the fourteenth pin of the main control chip U1, the negative electrode of the polar capacitor C6 is connected with the output end of the amplifier IC2B, and the positive electrode of the polar capacitor C6 is connected with the third pin of the main control chip U1.
5. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the negative electrode of the polar capacitor C5 is connected to the positive input end of the amplifier IC3A through a resistor R15, the output end of the amplifier IC3A is connected to the positive input end of the amplifier IC3B through a resistor R25, the output end of the amplifier IC3B is connected to the output end of the amplifier IC3A through a resistor R41 and a resistor R27, the negative electrode of the polar capacitor C6 is connected to the positive input end of the amplifier IC4A through a resistor R16, the output end of the amplifier IC4A is connected to the positive input end of the amplifier IC4B through a resistor R26, and the output end of the amplifier IC4B is connected to the output end of the amplifier IC4A through a resistor R41 and a resistor R27.
6. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the negative electrode of the polar capacitor C5 is connected to the negative input terminal of the amplifier IC1C through a resistor R21, the output terminal of the amplifier IC1C is connected to the negative input terminal of the amplifier IC1D through an adjustable resistor RP3A, the negative electrode of the polar capacitor C6 is connected to the negative input terminal of the amplifier IC2C through a resistor R22, and the output terminal of the amplifier IC2C is connected to the negative input terminal of the amplifier IC2D through an adjustable resistor RP 3B.
7. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the negative electrode of the polar capacitor C7 is connected with the negative electrode input end of the amplifier IC1C through a resistor 29 and a resistor 31, the positive electrode of the polar capacitor C7 is connected with the tenth pin of the main control chip U1, the negative electrode of the polar capacitor C8 is connected with the negative electrode input end of the amplifier IC2C through a resistor 30 and a resistor 32, and the positive electrode of the polar capacitor C8 is connected with the seventh pin of the main control chip U1.
8. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the negative electrode of the polar capacitor C13 is connected with the output terminal LOUT, the positive electrode of the polar capacitor C13 is connected with the output terminal of the amplifier IC1D through a resistor R49, the negative electrode of the polar capacitor C14 is connected with the output terminal ROUT, and the positive electrode of the polar capacitor C14 is connected with the output terminal of the amplifier IC2D through a resistor R50.
9. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: and a switch SW1 is arranged between the connection of the power amplifier front-stage amplification module and the power amplifier rear-stage amplification module.
10. A harmonic-producing power amplifier as claimed in claim 1, which is high-frequency filtered and modifies the effect of high-frequency signals, characterized in that: the output end of the amplifier IC1A is grounded through a resistor R7, a resistor R9, an adjustable resistor RP2A and a resistor R5, and the output end of the amplifier IC2A is grounded through a resistor R8, a resistor R10, an adjustable resistor RP2B and a resistor R6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236581.5A CN113904636A (en) | 2021-10-23 | 2021-10-23 | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236581.5A CN113904636A (en) | 2021-10-23 | 2021-10-23 | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113904636A true CN113904636A (en) | 2022-01-07 |
Family
ID=79026066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111236581.5A Pending CN113904636A (en) | 2021-10-23 | 2021-10-23 | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113904636A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1342386A (en) * | 1998-09-04 | 2002-03-27 | Srs实验室公司 | Low-frequency audio enhancement system |
| JP2008233169A (en) * | 2007-03-16 | 2008-10-02 | Seiko Npc Corp | Sound effect circuit and sound effect actualization method |
| CN105933828A (en) * | 2016-07-11 | 2016-09-07 | 东莞正阳电子有限公司 | A method and circuit for enhancing bass sound effect |
| CN106936396A (en) * | 2017-04-26 | 2017-07-07 | 成都万家健康管理股份有限公司 | A kind of modulate circuit of Vibration Signal in Frequency Domain |
| CN216751688U (en) * | 2021-10-23 | 2022-06-14 | 顾康 | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions |
-
2021
- 2021-10-23 CN CN202111236581.5A patent/CN113904636A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1342386A (en) * | 1998-09-04 | 2002-03-27 | Srs实验室公司 | Low-frequency audio enhancement system |
| JP2008233169A (en) * | 2007-03-16 | 2008-10-02 | Seiko Npc Corp | Sound effect circuit and sound effect actualization method |
| CN105933828A (en) * | 2016-07-11 | 2016-09-07 | 东莞正阳电子有限公司 | A method and circuit for enhancing bass sound effect |
| CN106936396A (en) * | 2017-04-26 | 2017-07-07 | 成都万家健康管理股份有限公司 | A kind of modulate circuit of Vibration Signal in Frequency Domain |
| CN216751688U (en) * | 2021-10-23 | 2022-06-14 | 顾康 | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2443744B1 (en) | Method and circuit for controlling an output of an audio signal of a battery-powered device | |
| CN101964190B (en) | Method and device for restoring signal under speaker cut-off frequency to original sound | |
| CN216751688U (en) | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions | |
| CN101903941A (en) | Noise Cancellation System with Low Rate Simulation | |
| CN204482023U (en) | A kind of whistle inhibition system | |
| CN104503297A (en) | DSP audio digital signal processing system and method | |
| CN102915741A (en) | Equal loudness contour based method for automatically recovering tone of voice signal according to volume adjustment | |
| CN107277683B (en) | Audio amplification system and method | |
| CN108989950A (en) | adaptive bass processing system | |
| CN110324759B (en) | Voice sound pickup circuit and device | |
| CN201898599U (en) | A circuit and mobile terminal for eliminating POP noise | |
| CN102065352B (en) | Device and method for eliminating POP noise of CAPLESS audio power amplifier | |
| CN113904636A (en) | Harmonic-generating power amplifier with high-frequency filtering and high-frequency signal effect modification functions | |
| CN201585114U (en) | Sound box | |
| CN110062315A (en) | A kind of impedance self-adaptive power amplifier and loudspeaker | |
| CN205566597U (en) | Automatic earphone system of volume adjusts | |
| CN201114734Y (en) | A car audio adaptive sound field adjustment device | |
| KR20020035003A (en) | Ultra Bass II | |
| CN207150542U (en) | Audio power amplifier | |
| CN212726843U (en) | Power supply purifying treatment device for audio system | |
| CN221283333U (en) | Audio signal frequency compression system | |
| CN217037446U (en) | Domestic and automobile-used high-fidelity subwoofer power amplifier circuit | |
| CN207560310U (en) | It is a kind of based on dynamically boosted DSP power amplification systems | |
| CN212259317U (en) | Sound is adjusted to self-adaptation audio | |
| CN209328510U (en) | A Noise Reduction Control System for High Power Reactor Based on Adaptive Control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |