CN205754226U - Active audio frequency power amplifier - Google Patents
Active audio frequency power amplifier Download PDFInfo
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- CN205754226U CN205754226U CN201520988842.2U CN201520988842U CN205754226U CN 205754226 U CN205754226 U CN 205754226U CN 201520988842 U CN201520988842 U CN 201520988842U CN 205754226 U CN205754226 U CN 205754226U
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Abstract
This utility model relates to a kind of active audio frequency power amplifier, including: balancing circuitry, straight-through filtering wave circuit, high-pass filtering circuit, selection switch, follower, high-frequency compensation apparatus, low-frequency compensation device and negative circuit；Balancing circuitry incoming audio signal, for suppressing the common-mode noise of audio signal；Described straight-through filtering wave circuit, high-pass filtering circuit carry out frequency filtering to audio signal；Described selection switchs selection connection straight-through filtering wave circuit or high-pass filtering circuit to follower；Audio signal is isolated by described follower, and audio signal is divided into two-way input described high-frequency compensation apparatus, low-frequency compensation device；Described high-frequency compensation apparatus, low-frequency compensation device carry out frequency compensation to audio signal respectively；The phase place of audio signal is adjusted and exports by described negative circuit.Technology of the present utility model, simple to the regulation process operation of the audio signal of input, circuit structure is easily achieved, low cost.
Description
Technical field
This utility model relates to Audiotechnica field, particularly relates to the active audio frequency power amplifier of a kind of active audio amplifier.
Background technology
Professional audio merit amplifier, at the junior college's power audio amplifier specifying terms and conditions to drive.It is widely used in the particular places such as commercial performance, stadiums, meeting room, KTV amusement, properties of product are had higher requirements.
Traditional active audio frequency power amplifier, simply a simple audio signal power amplification, cannot adjust effect to particular place.When needs carry out adjusting effect, mainly by computer or dsp chip control mode, by controlling curve, EQ control etc., although realize function more, but regulation process is complicated, and device cost is higher.
Utility model content
Based on this, it is necessary to for the problem that existing regulation process is complicated, it is provided that a kind of active audio frequency power amplifier.
A kind of active audio frequency power amplifier, including: balancing circuitry, straight-through filtering wave circuit, high-pass filtering circuit, selection switch, follower, high-frequency compensation apparatus, low-frequency compensation device and negative circuit；
Described balancing circuitry connects straight-through filtering wave circuit, high-pass filtering circuit respectively；
Described straight-through filtering wave circuit, high-pass filtering circuit connect two inputs selecting switch respectively；
The described common port selecting switch connects follower；
Described follower connects high-frequency compensation apparatus, low-frequency compensation device respectively；
Described high-frequency compensation apparatus, the outfan of low-frequency compensation device connect negative circuit；
Described balancing circuitry incoming audio signal, for suppressing the common-mode noise of audio signal；Described straight-through filtering wave circuit, high-pass filtering circuit carry out frequency filtering to audio signal；Described selection switchs selection connection straight-through filtering wave circuit or high-pass filtering circuit to follower；Audio signal is isolated by described follower, and audio signal is divided into two-way input described high-frequency compensation apparatus, low-frequency compensation device；Described high-frequency compensation apparatus, low-frequency compensation device carry out frequency compensation to audio signal respectively；The phase place of audio signal is adjusted and exports by described negative circuit.
In one embodiment, described high-frequency compensation apparatus includes the first switch and high frequency compensation；
Described balancing circuitry connects high frequency compensation by described first switch.
In one embodiment, described low-frequency compensation device includes second switch and low-frequency compensation circuit；
Described balancing circuitry connects low-frequency compensation circuit by described second switch.
In one embodiment, described balancing circuitry suppression common-mode noise is more than or equal to 60dB.
In one embodiment, the frequency range of described straight-through filtering wave circuit is 20Hz-20KHz.
In one embodiment, the frequency range of described high-pass filtering circuit is 100Hz-20KHz.
In one embodiment, the 5KHz frequency range of audio signal is promoted 3dB by described high frequency compensation.
In one embodiment, the phase place of described negative circuit adjustment audio signal is 0 degree and 180 degree.
Above-mentioned active audio frequency power amplifier, composition is connected by balancing circuitry, straight-through filtering wave circuit, high-pass filtering circuit, selection switch, follower, high-frequency compensation apparatus, low-frequency compensation device and negative circuit, simple to the regulation process operation of the audio signal of input, circuit structure is easily achieved, low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the active audio frequency power amplifier of an embodiment；
Fig. 2 is the structural representation of the high and low frequency compensation device part of an embodiment.
Detailed description of the invention
Structural representation with reference to the active audio frequency power amplifier that Fig. 1, Fig. 1 are an embodiment.
A kind of active audio frequency power amplifier, including: balancing circuitry 101, straight-through filtering wave circuit 102, high-pass filtering circuit 103, selection switch 104, follower 105, high-frequency compensation apparatus 106, low-frequency compensation device 107 and negative circuit 108.
Described balancing circuitry 101 connects straight-through filtering wave circuit 102, high-pass filtering circuit 103 respectively；Described straight-through filtering wave circuit 102, high-pass filtering circuit 103 connect two inputs selecting switch 104 respectively；The described common port selecting switch 104 connects follower 105；Described follower 105 connects high-frequency compensation apparatus 106, low-frequency compensation device 107 respectively；Described high-frequency compensation apparatus 106, the outfan of low-frequency compensation device 107 connect negative circuit 108.
Described balancing circuitry 101 incoming audio signal, for suppressing the common-mode noise of audio signal；In one embodiment, balancing circuitry 101 suppresses common-mode noise to be more than or equal to 60dB；The interference noise of long range signals source transmission can be effectively reduced.
Described straight-through filtering wave circuit 102, high-pass filtering circuit 103 carry out frequency filtering to audio signal；Described selection switchs 104 selection connection straight-through filtering wave circuit 102 or high-pass filtering circuit 103 to followers 105；By selecting switch 104, straight-through filtering wave circuit 102 or high-pass filtering circuit 103 is selected to be filtered.
In one embodiment, the frequency range of described straight-through filtering wave circuit 102 is 20Hz-20KHz, i.e. leads directly to audio signal, may be used for listening the music of genuineness.Alternatively, it is also possible to audio signal is carried out high-pass filtering；The i.e. frequency range of high-pass filtering circuit 103 is 100Hz-20KHz, may be used for meeting room such as and applies, low frequency is filtered and makes speech utterance become apparent from.
Audio signal is isolated by described follower 105, and audio signal is divided into two-way input described high-frequency compensation apparatus 106, low-frequency compensation device 107；Described high-frequency compensation apparatus 106, low-frequency compensation device 107 carry out frequency compensation to audio signal respectively.
In one embodiment, with reference to shown in Fig. 2, described high-frequency compensation apparatus 106 includes the first switch 1061 and high frequency compensation 1062；Described follower 105 is by described first switch 1061 connection high frequency compensation.Described low-frequency compensation device 107 includes second switch 1071 and low-frequency compensation circuit 1072；Described follower 105 connects low-frequency compensation circuit 1072 by described second switch 1071.
In one embodiment, the 5KHz frequency range of audio signal is promoted 3dB by high frequency compensation；Concrete, described low-frequency compensation circuit can be by selecting to switch the value of feedback of the resistance changing low-frequency compensation circuit so that 100Hz frequency range lifting 3dB, and the bass making the audio signal of output is the most dynamic；High frequency compensation can also change the value of feedback of resistance by selecting switch thus 5KHz frequency range promotes 3dB, and the high pitch making the audio signal of output is louder.
The phase place of audio signal is adjusted and exports by described negative circuit 108；The phase place of described negative circuit 108 adjustment audio signal is 0 degree and 180 degree.
Above-mentioned active audio frequency power amplifier, composition is connected by balancing circuitry 101, follower 105, high-frequency compensation apparatus 106, low-frequency compensation device 107 and negative circuit 108, simple to the regulation process operation of the audio signal of input, circuit structure is easily achieved, low cost.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (8)
1. an active audio frequency power amplifier, it is characterised in that including: balancing circuitry, straight-through filtering wave circuit, high-pass filtering circuit, selection switch, follower, high-frequency compensation apparatus, low-frequency compensation device and negative circuit；
Described balancing circuitry connects straight-through filtering wave circuit, high-pass filtering circuit respectively；
Described straight-through filtering wave circuit, high-pass filtering circuit connect two inputs selecting switch respectively；
The described common port selecting switch connects follower；
Described follower connects high-frequency compensation apparatus, low-frequency compensation device respectively；
Described high-frequency compensation apparatus, the outfan of low-frequency compensation device connect negative circuit；
Described balancing circuitry incoming audio signal, for suppressing the common-mode noise of audio signal；Described straight-through filtering wave circuit, high-pass filtering circuit carry out frequency filtering to audio signal；Described selection switchs selection connection straight-through filtering wave circuit or high-pass filtering circuit to follower；Audio signal is isolated by described follower, and audio signal is divided into two-way input described high-frequency compensation apparatus, low-frequency compensation device；Described high-frequency compensation apparatus, low-frequency compensation device carry out frequency compensation to audio signal respectively；The phase place of audio signal is adjusted and exports by described negative circuit.
Active audio frequency power amplifier the most according to claim 1, it is characterised in that described high-frequency compensation apparatus includes the first switch and high frequency compensation；
Described balancing circuitry connects high frequency compensation by described first switch.
Active audio frequency power amplifier the most according to claim 1, it is characterised in that described low-frequency compensation device includes second switch and low-frequency compensation circuit；
Described balancing circuitry connects low-frequency compensation circuit by described second switch.
Active audio frequency power amplifier the most according to claim 1, it is characterised in that described balancing circuitry suppression common-mode noise is more than or equal to 60dB.
Active audio frequency power amplifier the most according to claim 1, it is characterised in that the frequency range of described straight-through filtering wave circuit is 20Hz-20KHz.
Active audio frequency power amplifier the most according to claim 1, it is characterised in that the frequency range of described high-pass filtering circuit is 100Hz-20KHz.
Active audio frequency power amplifier the most according to claim 2, it is characterised in that the 5KHz frequency range of audio signal is promoted 3dB by high frequency compensation.
Active audio frequency power amplifier the most according to claim 1, it is characterised in that the phase place of described negative circuit adjustment audio signal is 0 degree and 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520988842.2U CN205754226U (en) | 2015-12-02 | 2015-12-02 | Active audio frequency power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520988842.2U CN205754226U (en) | 2015-12-02 | 2015-12-02 | Active audio frequency power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205754226U true CN205754226U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520988842.2U Active CN205754226U (en) | 2015-12-02 | 2015-12-02 | Active audio frequency power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205754226U (en) |
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2015
- 2015-12-02 CN CN201520988842.2U patent/CN205754226U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Science City (Guangzhou) Finance Leasing Co., Ltd Assignor: GUANGZHOU RUIFENG AUDIO TECHNOLOGY CORPORATION Ltd. Contract record no.: X2020980000388 Denomination of utility model: Active audio power amplifier Granted publication date: 20161130 License type: Exclusive License Record date: 20200228 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Active audio power amplifier Effective date of registration: 20200302 Granted publication date: 20161130 Pledgee: Science City (Guangzhou) Finance Leasing Co., Ltd Pledgor: GUANGZHOU RUIFENG AUDIO TECHNOLOGY CORPORATION Ltd. Registration number: Y2020980000413 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Assignor: GUANGZHOU RUIFENG AUDIO TECHNOLOGY Corp.,Ltd. Contract record no.: X2020980000388 Date of cancellation: 20220217 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220217 Granted publication date: 20161130 Pledgee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Pledgor: GUANGZHOU RUIFENG AUDIO TECHNOLOGY Corp.,Ltd. Registration number: Y2020980000413 |