CN104579209A - Signal compression circuit and sound recording microphone signal compressor - Google Patents
Signal compression circuit and sound recording microphone signal compressor Download PDFInfo
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- CN104579209A CN104579209A CN201410805341.6A CN201410805341A CN104579209A CN 104579209 A CN104579209 A CN 104579209A CN 201410805341 A CN201410805341 A CN 201410805341A CN 104579209 A CN104579209 A CN 104579209A
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Abstract
The invention discloses a signal compression circuit and a cound recording microphone signal compressor. According to the scheme of the invention, a signal input and power supply processing circuit can meet requirements of multiple input modes; due to the adoption of a low-cut circuit, a low-frequency part of a signal can be effectively attenuated, so that an output signal is multi-optional; a signal amplification circuit is added at a front stage of the compression circuit, so that the signal compression circuit can be used as a signal amplifier even when a compression function is not used, and the application is enriched; a component for adjusting the compression speed is additionally added at the compression circuit part, so that different compression requirements are met; the compression modes can be simulated and adjusted through a potentiometer, so that the compression depth and the compression ratio can be randomly adjusted according to demands; due to the adoption of a phase inverter circuit, switching of different phases can be met; in a word, the signal compression circuit disclosed by the scheme of the invention is a multifunctional multi-purpose compression limiter, and the function simplicity of a conventional compression limiter is broken.
Description
Technical field
The present invention relates to Signal Compression technical field, particularly relate to a kind of Signal Compression circuit and recording microphone Signal compressor.
Background technology
Compressor is the abbreviation of compression and limiter.Compressor reducer: be a kind of amplifier that gain own reduces along with incoming signal level increase.Limiter: be a kind of such amplifier, after output level arrives certain value, no matter how incoming level increases, and its Maximum Output Level keeps constant amplifier.This Maximum Output Level can regulate as required.Usually, mostly compressor reducer and limiter are to combine and occur, have the local of compression function simultaneously also will restricted function.Existing compressor is general does not only have amplifying circuit with simple compression limitation function; Or compressor itself only regulates with mechanical gear, and thus, its function singleness, cannot meet the demand of work.
Summary of the invention
The object of this invention is to provide a kind of Signal Compression circuit and recording microphone Signal compressor, can realizing carrying out compression to large-signal input, to make it output signal undistorted, has applicability strong, the features such as application scenario is extensive.
The object of the invention is to be achieved through the following technical solutions:
A kind of Signal Compression circuit, this circuit comprises: the signal input connected successively and power supply processing circuit, signal amplification circuit, lowly cut circuit, compressor circuit, and paraphase and signal output apparatus;
Wherein, signal input and power supply processing circuit, for the input of signal source, and provide the operating voltage needed for it according to the signal source that mains switch range state in this circuit is input;
Signal amplification circuit, for carrying out amplification process to the signal source of input;
Low cutting in circuit is provided with low incision pass, and when this switch open, this circuit is used for excising low frequency signal;
Being provided with compression switch and compression speed switch in compressor circuit, when compression switch is opened, controlling by regulating the speed of open and close state to input signal compression speed of compression speed switch;
Be provided with reversing phase switch in paraphase and signal output apparatus, when this reversing phase switch is opened, export after paraphase is carried out to the signal of input.
Further, described according to mains switch range state in this circuit for input signal source provide the operating voltage needed for it to comprise:
Described mains switch gear comprises 48V switch, when this 48V switch open, for the signal source of input provides 48V operating voltage.
Further, in described compressor circuit, being also provided with several potentiometers, for carrying out gain-adjusted to the size of input signal, and compression factor and the degree of depth being controlled.
Comprise a recording microphone Signal compressor for aforementioned signal compressor circuit, it comprises: left body, right cover plate and front panel; Described front panel is fixed on left body, and described right cover plate is fixed on above left body, forms a tetragonal body;
Wherein, this tetragonal body inside is provided with wiring board, is provided with described Signal Compression circuit in this wiring board, and this wiring board is fixed on left body; This wiring board is also provided with supporting bracket, for supporting described right cover plate; This wiring board one end is also provided with the knob and switch that control this wiring board, and the indicator light of display compressor circuit operating state, and described knob, switch and indicator light are stretched out outside described tetragonal body by the opening of relevant position on front panel.
Further, described front panel is made by 3mm aluminium sheet, and its back is equipped with blind hole, is connected with left body by pan-headed screw.
Further, described right cover plate adopts 1mm cold-reduced sheet to make, and is fixed by countersunk head screw and left body.
Further, described left body is provided with rivet, and described wiring board is fixed on described rivet.
As seen from the above technical solution provided by the invention, signal input and power supply processing circuit can meet the demand of multiple input modes; Low circuit of cutting can make the low frequency part of signal effectively be decayed, and makes output signal more options; Adding signal amplification circuit in the prime of compressor circuit, even if rely on without also can be used as signal amplifier to use during compression function like this, making its purposes variation; Add the adjustment of compression speed speed in compressor circuit part, different compression requirements can be met; Its compress mode carries out analog regulation by potentiometer, and its compression depth compression factor can arbitrarily be regulated according to demand; Phase inverter can meet the switching to out of phase; Generally speaking, the solution of the present invention is a kind of compressor of multifunctional and multipurpose, has broken the function singleness of traditional compressor.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The schematic diagram of a kind of Signal Compression circuit that Fig. 1 provides for the embodiment of the present invention one;
The schematic diagram of the signal input that Fig. 2 provides for the embodiment of the present invention one and power supply processing circuit;
The schematic diagram of the signal amplification circuit that Fig. 3 provides for the embodiment of the present invention one;
The low schematic diagram cutting circuit that Fig. 4 provides for the embodiment of the present invention one;
The schematic diagram of the compressor circuit that Fig. 5 provides for the embodiment of the present invention one;
The schematic diagram of the paraphase that Fig. 6 provides for the embodiment of the present invention one and signal output apparatus;
The workflow diagram of the Signal Compression circuit that Fig. 7 provides for the embodiment of the present invention one;
The structural representation of a kind of recording microphone Signal compressor that Fig. 8 provides for the embodiment of the present invention two.
A kind of recording microphone Signal compressor appearance schematic diagram that Fig. 9 provides for the embodiment of the present invention two;
The schematic diagram of wiring board upper knob, switch and indicator light that Figure 10 provides for the embodiment of the present invention two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
Embodiment one
The schematic diagram of a kind of Signal Compression circuit that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, this main circuit will comprise: the input of the signal that connects successively and power supply processing circuit, signal amplification circuit, lowly cut circuit, compressor circuit, and paraphase and signal output apparatus.
For the ease of understanding, for 2-6 by reference to the accompanying drawings, above-mentioned electronic circuit is described in detail below.
Be illustrated in figure 2 the schematic diagram of signal input and power supply processing circuit.The input of this signal and power supply processing circuit, for the input of signal source, and provide the operating voltage needed for it according to the signal source that mains switch range state in this circuit is input; Thus meet the demand of multiple input modes.
Exemplary, be 48V switch S 6 in Fig. 2, when this 48V switch open, for the signal source of input provides 48V operating voltage, also shown by corresponding indicator light LD4 meanwhile.
Be illustrated in figure 3 the schematic diagram of signal amplification circuit.This signal amplification circuit, for carrying out amplification process to the signal source of input.
Be illustrated in figure 4 the low schematic diagram cutting circuit.Be provided with low incision in this circuit and close S3, when this switch S 3 is opened, this circuit is used for excising low frequency signal; Make output signal more options.
Be illustrated in figure 5 the schematic diagram of compressor circuit.Be provided with compression switch S5 and compression speed switch S 4 in this compressor circuit, when compression switch S5 opens, shown by corresponding indicator light LD5; Now, can control by regulating the speed of open and close state to input signal compression speed of compression speed switch S 4.
Further, in this compressor circuit, being also provided with several potentiometers, for carrying out gain-adjusted (VR1 and VR4) to the size of input signal, and compression factor (VR3) and the degree of depth (VR2) being controlled.
Be illustrated in figure 6 the schematic diagram of paraphase and signal output apparatus.Be provided with reversing phase switch S2 in this paraphase and signal output apparatus, when this reversing phase switch S2 opens, export after paraphase is carried out to the signal of input.
The workflow diagram of the Signal Compression circuit provided based on the embodiment of the present invention as shown in Figure 7.After signal input, judge whether to need to open 48V switch S 6, if then open, otherwise close; Afterwards, carry out signal and amplify process, then judge that the signal after being put into is the need of carrying out low cutting, if so, then open low incisions pass S3 and carry out lowly cutting process, otherwise, do not carry out lowly cutting process; Signal enters compressor circuit subsequently, opens as required or closes compression switch S 5 and compression speed switch S 4, and carries out gain-adjusted by adjustment VR1 and VR4 to input signal, and controlled compression factor and the degree of depth by VR3 and VR2; Finally, judge whether to need to carry out paraphase to signal, if so, then open reversing phase switch, export after carrying out paraphase process, otherwise, do not carry out paraphase process and directly export.
In the such scheme of the embodiment of the present invention, signal input and power supply processing circuit can meet the demand of multiple input modes; Low circuit of cutting can make the low frequency part of signal effectively be decayed, and makes output signal more options; Adding signal amplification circuit in the prime of compressor circuit, even if rely on without also can be used as signal amplifier to use during compression function like this, making its purposes variation; Add the adjustment of compression speed speed in compressor circuit part, different compression requirements can be met; Its compress mode carries out analog regulation by potentiometer, and its compression depth compression factor can arbitrarily be regulated according to demand; Phase inverter can meet the switching to out of phase; Generally speaking, the solution of the present invention is a kind of compressor of multifunctional and multipurpose, has broken the function singleness of traditional compressor.
Embodiment two
Fig. 8 provides a kind of structural representation comprising the recording microphone Signal compressor of Signal Compression circuit described in embodiment one for the embodiment of the present invention two.Be provided with Signal Compression circuit described in embodiment one in wiring board 84 in Fig. 8, but for the ease of representing, in Fig. 8, only schematically give some components and parts; Such as, transformer 88 (the transformer T1 corresponding in paraphase shown in Fig. 6 and signal output apparatus) in wiring board 84; Specifically, this recording microphone Signal compressor mainly comprises:
Left body 81, right cover plate 82 and front panel 83; Described front panel 83 is fixed on left body 81, and described right cover plate 82 is fixed on above left body 81, forms a tetragonal body;
Wherein, this tetragonal body inside is provided with wiring board 84, is provided with described Signal Compression circuit (described in embodiment one Signal Compression circuit) in this wiring board, and this wiring board 84 is fixed on left body 81; This wiring board 84 is also provided with supporting bracket 85 (being fixed on wiring board 84 by two six prism 86-87), for supporting described right cover plate 82; This wiring board 84 one end is also provided with the knob and switch that control this wiring board, and the indicator light of display compressor circuit operating state, and described knob, switch and indicator light are stretched out outside described tetragonal body by the opening of relevant position on front panel.
Further, described front panel is made by 3mm aluminium sheet, and its back is equipped with blind hole, is connected with left body by pan-headed screw.
Further, described right cover plate adopts 1mm cold-reduced sheet to make, and is fixed by countersunk head screw and left body.
Further, described left body is provided with rivet, and described wiring board is fixed on described rivet.
Recording microphone Signal compressor as shown in Figure 9 will can be obtained after element assembling shown in Fig. 8.
For the ease of understanding, the knob, switch and the indicator light that arrange below in conjunction with accompanying drawing 10 pairs of wiring board 84 one end are described.
As shown in Figure 10, knob 1 is for the gain potentiometer VR1 in compressor circuit shown in control chart 6, knob 2 is for the gain potentiometer VR2 in compressor circuit shown in control chart 6, knob 3 is for the gain potentiometer VR3 in compressor circuit shown in control chart 6, and knob 4 is for the gain potentiometer VR4 in compressor circuit shown in control chart 6; Switch 5 is for the compression speed switch S 4 in compressor circuit shown in control chart 6, switch 6 is for the reversing phase switch S2 in paraphase shown in control chart 6 and signal output apparatus, switch 7 closes S3 for low incision of cutting in circuit low shown in control chart 4, switch 8 is for the input of signal shown in control chart 2 and the 48V switch S 6 in power supply processing circuit, and switch 9 is for the compression switch S5 in compressor circuit shown in control chart 6; Indicator light 10 is 48V indicator light (LD4 in corresponding diagram 2), and whether indicator light 11 is compression function indicator light (LD5 in corresponding diagram 5), show compression function open by this indicator light; Three signal lamps 12, be followed successively by overload light (LD1 in corresponding diagram 6) from top to bottom, represent the current compression indicator light (LD2 in corresponding diagram 6) whether carrying out compressing process, the normal indicator light of signal (LD3 in corresponding diagram 6).
It should be noted that, the operation principle of wiring board 84 and flow process have been described in detail in embodiment one, therefore repeat no more; Meanwhile, the size of wiring board upper knob, switch and indicator light, pattern and position also can adjust according to actual conditions, as long as can realize above-mentioned functions.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (7)
1. a Signal Compression circuit, is characterized in that, this circuit comprises: the input of the signal that connects successively and power supply processing circuit, signal amplification circuit, lowly cut circuit, compressor circuit, and paraphase and signal output apparatus;
Wherein, signal input and power supply processing circuit, for the input of signal source, and provide the operating voltage needed for it according to the signal source that mains switch range state in this circuit is input;
Signal amplification circuit, for carrying out amplification process to the signal source of input;
Low cutting in circuit is provided with low incision pass, and when this switch open, this circuit is used for excising low frequency signal;
Being provided with compression switch and compression speed switch in compressor circuit, when compression switch is opened, controlling by regulating the speed of open and close state to input signal compression speed of compression speed switch;
Be provided with reversing phase switch in paraphase and signal output apparatus, when this reversing phase switch is opened, export after paraphase is carried out to the signal of input.
2. Signal Compression circuit according to claim 1, is characterized in that, described according to mains switch range state in this circuit for input signal source provide the operating voltage needed for it to comprise:
Described mains switch gear comprises 48V switch, when this 48V switch open, for the signal source of input provides 48V operating voltage.
3. Signal Compression circuit according to claim 1, is characterized in that, is also provided with several potentiometers in described compressor circuit, for carrying out gain-adjusted to the size of input signal, and controls compression factor and the degree of depth.
4. comprise a recording microphone Signal compressor for Signal Compression circuit described in any one of claim 1-3, it is characterized in that, comprising: left body, right cover plate and front panel; Described front panel is fixed on left body, and described right cover plate is fixed on above left body, forms a tetragonal body;
Wherein, this tetragonal body inside is provided with wiring board, is provided with described Signal Compression circuit in this wiring board, and this wiring board is fixed on left body; This wiring board is also provided with supporting bracket, for supporting described right cover plate; This wiring board one end is also provided with the knob and switch that control this wiring board, and the indicator light of display compressor circuit operating state, and described knob, switch and indicator light are stretched out outside described tetragonal body by the opening of relevant position on front panel.
5. recording microphone Signal compressor according to claim 4, is characterized in that, described front panel is made by 3mm aluminium sheet, and its back is equipped with blind hole, is connected with left body by pan-headed screw.
6. Signal compressor according to claim 4, is characterized in that, described right cover plate adopts 1mm cold-reduced sheet to make, and is fixed by countersunk head screw and left body.
7. Signal compressor according to claim 4, is characterized in that, described left body is provided with rivet, and described wiring board is fixed on described rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805341.6A CN104579209A (en) | 2014-12-22 | 2014-12-22 | Signal compression circuit and sound recording microphone signal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805341.6A CN104579209A (en) | 2014-12-22 | 2014-12-22 | Signal compression circuit and sound recording microphone signal compressor |
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| Publication Number | Publication Date |
|---|---|
| CN104579209A true CN104579209A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410805341.6A Pending CN104579209A (en) | 2014-12-22 | 2014-12-22 | Signal compression circuit and sound recording microphone signal compressor |
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| CN (1) | CN104579209A (en) |
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| CN203301716U (en) * | 2013-05-28 | 2013-11-20 | 宁波市鄞州奥创电子有限公司 | Microphone amplifier |
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2014
- 2014-12-22 CN CN201410805341.6A patent/CN104579209A/en active Pending
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| JPH0738443A (en) * | 1993-03-09 | 1995-02-07 | Sony Corp | Compression data recording and/or reproduction or transmitter and/or receiver, recording and/or reproducing compression data or transmission and/or reception method and recording medium |
| WO2005034091A1 (en) * | 2003-09-30 | 2005-04-14 | Siemens Aktiengesellschaft | Audio transmission method and arrangement |
| CN2731887Y (en) * | 2004-09-29 | 2005-10-05 | 天津财经大学 | Built-in regulating multi-channel mic amplifier |
| CN201639630U (en) * | 2010-04-12 | 2010-11-17 | 上海华勤通讯技术有限公司 | Mobile phone with stereophonic recording function |
| CN102403022A (en) * | 2010-09-13 | 2012-04-04 | 三洋电机株式会社 | Recording apparatus, recording condition setting method, and recording condition setting program |
| CN202514057U (en) * | 2012-03-31 | 2012-10-31 | 宁波市鄞州奥创电子有限公司 | Microphone amplifier |
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Application publication date: 20150429 |
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