CN206977676U - Computer audio frequency high-fidelity recording system - Google Patents
Computer audio frequency high-fidelity recording system Download PDFInfo
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- CN206977676U CN206977676U CN201720856125.3U CN201720856125U CN206977676U CN 206977676 U CN206977676 U CN 206977676U CN 201720856125 U CN201720856125 U CN 201720856125U CN 206977676 U CN206977676 U CN 206977676U
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Abstract
The utility model discloses a kind of computer audio frequency high-fidelity recording system.Its earphone jack, audio input, the input three of attenuator circuit are in parallel, the output end of attenuator circuit is in parallel with recorded audio signals output plug, recorded audio signals output plug inserts the recording input socket of computer or recording pen, audio input inserts the audio outlet plug of computer, the earth terminal series signals selecting switch in attenuator circuit.The power supply of recording volume level display circuit is derived from the USB of computer.It is the audio electrical signal in computer audio frequency output socket, it is converted into the audio electrical signal of the recording input socket desired signal intensity of computer or recording pen, computer or recording pen are recycled recorded in sound, high quality recording can be carried out and with monitoring to the audio that computer plays, solves the problems, such as the interior record that some computers can not play out sound, and recording level can monitor.It is applied to the recording that computer plays the stereo interior record mode of high quality of audio.
Description
Technical field
A kind of recording device is the utility model is related to, especially a kind of computer audio frequency high-fidelity recording system.
Background technology
People are when browsing internet web page, it is sometimes desirable to the sound in the lower webpage of record, some notebook computers or desk-top
If electromechanical brain loads onto sound recorder software, it is possible to by recording the sound played in webpage in the sound card of computer.But have
Notebook computer or desktop computer sound card do not support the interior record of sound, especially the notebook computer and platform of new listing in recent years
Formula electromechanics brain does not support the more and more of the interior record of sound.If utilize computer（The present invention is subsequently notebook computer and desktop computer
Computer general name computer）Earphone output socket directly plugged with the microphone jack with plug tone frequency channel wire and computer, although can be with
Record, but this just brings two problems：The sound recorded first, which seriously disappears, to be pushed up blasting and cannot not hear, because microphone is defeated
Enter the maximum input voltage of jack also with regard to several millivolts, but the voltage of earphone output is more than hundreds of millivolts, serious mistake
Carry；Still another problem is that the sound of webpage can not just be heard when recording, it can not monitor, although desktop computer is defeated with circuit
Computer sound can not be also heard when entering to allow above-mentioned connection, but recording；An also problem is that recording level can not monitor, because
And the audio voltage size of computer output also just can not be correctly adjusted, also make it that recording tonequality is very poor.Other computer and recording pen
Between sound in record above mentioned problem similarly be present.
The content of the invention
The purpose of this utility model is to provide the audio electrical signal in a kind of output socket using computer audio frequency to carry out sound
The computer audio frequency recording system of record in sound.It should it is versatile, easy to use, recording when can use headphone monitor, both can use take down notes
This or desktop computer are recorded, and can use recording pen to record again, both the microphone electric signal of several millivolts of exportable low level was set for recording
The circuit that standby microphone input and the line output signal of hundreds of millivolts of exportable high level are used for sound pick-up outfit inputs.It is also
With recording volume level display function, effectively prevent recorded voice too small or blasting.
To achieve these goals, the utility model includes computer 8, after earphone jack 1 is in parallel with audio input 2 again
In parallel with the input of attenuator circuit 7, the output end of attenuator circuit 7 is in parallel with recorded audio signals output plug 3, recorded audio signals output
Plug 3 is mutually inserted with recording input socket, and audio input 2 is mutually inserted with audio outlet plug 5.In order that obtain this reality
It is versatile with novel product, both exportable microphone low level signals, the line of high level can be changed into by change-over switch again
Road output signal, the earth terminal in attenuator circuit 7 is also in series with signal selecting switch 15.
In order to monitor and facilitate regulation recorded audio signals size, recorded voice caused by preventing recording level too small is small or records
Recorded voice overload caused by level is too high, which disappears, pushes up the generation of distortion phenomenon, also the input and recording volume of attenuator circuit 7
The input of level displaing circuit 11 is in parallel, the power input for volume level display circuit 11 of recording（16）With（17）Pass through
The USB jack 9 of USB power source plug 6 and computer is in parallel.
In order that the volume level display circuit 11 that must record is common to microphone signal output or circuit output both of which, record
Sound volume level display circuit 11 also carries signal behavior potentiometer 18.
Because the utility model is the audio electrical signal in computer audio frequency output socket, the record of computer or recording pen is converted into
To carry out, sound is interior to be recorded the audio electrical signal of sound input socket desired signal intensity（Or the recording of circuit output input mode）,
The computer that high quality can be carried out plays the recording of audio, and webpage can not be carried out by solving part notebook computer or desktop computer
The interior record problem of the sound of broadcasting or player plays.Of the present utility model versatile, user can pass through signal selecting switch
15 selection, it can easily change audio signal output mode and be exported for microphone signal or line output signal, is applicable to
Any computer or recording pen.The recording volume level display circuit 11 that the utility model carries, recording electricity can be shown at any time
Flat height, user can monitor accordingly, it is not high also not low to adjust recording level, ensure that recording effect is good.Recording volume level
The signal behavior potentiometer 18 that display circuit 11 carries also may be such that the circuit for low level microphone signal or high level
Line output signal all can normally show that a circuit uses.The earphone jack 1 of the utility model band, can lug machine recorded
Monitoring during sound, overcome the problem of can not being monitored when being recorded with ordinary audio line.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
In Fig. 1, include computer 8, can also attach recording pen 14.Attenuator circuit 7 is by L channel attenuator circuit and right sound
Road identical two parts of attenuator circuit two-way combine.Wherein L channel attenuator circuit is by resistance R1, resistance R2, switch
After S1 three's series connection, meet electric capacity C1 in resistance R1 and resistance R2 tie point and form.Wherein resistance R1 upper end is attenuator circuit 7
L channel input, electric capacity C1 right-hand member is the L channel output end of attenuator circuit 7；Wherein R channel attenuator circuit is by resistance
After R3, resistance R4, switch S2 three's series connection, meet electric capacity C2 in resistance R3 and resistance R4 tie point and form.Wherein resistance R3's
Upper end is the R channel input of attenuator circuit 7, and electric capacity C2 right-hand member is the R channel output end of attenuator circuit 7.Of the present invention
The L channel input of attenuator circuit 7 and the input of R channel input general name attenuator circuit 7, the left sound of attenuator circuit 7
The output end of road output end and R channel output end general name attenuator circuit 7.Right connector R, left grafting spring on input jack 1
Piece L and ground loop constitute earphone jack 1（Follow-up each socket is similar, is no longer described in detail）.Earphone jack 1 and audio are defeated
Enter in parallel with the input of attenuator circuit 7 again after the parallel connection of plug 2.
The output end of attenuator circuit 7 is in parallel with recorded audio signals output plug 3, and recorded audio signals output plug 3 inputs with recording
Socket（Microphone input socket 4 and Line 10 and recording pen microphone input socket 13 of the utility model computer
Thrin general name recording input socket）It is mutually inserted, audio input 2 is mutually inserted with audio outlet plug 5.In order that
The versatile of this product is obtained, both exportable microphone low level signal, the circuit of high level can be changed into by change-over switch again
Output signal, also two earth terminals of left and right acoustic channels in attenuator circuit 7 are connected signal selecting switch S1 and S2, signal behavior
Switch S1 and S2 is linked up with thin dashed line represents that both are interaction relations.The utility model is total signal selecting switch S1 and S2
Claim signal selecting switch 15.When signal selecting switch 15 disconnects, attenuator circuit 7 is just undamped, is now exportable high level
Hundreds of millivolts of circuit output pattern, it is suitable for the computer for having Line；When signal selecting switch 15 is connected, decay
Circuit 7 just 100 times of attenuated input signal, now to export the microphone output mode of several millivolts of low level, is suitable for only talking about
The computer or recording pen of cylinder input（Recording pen typically only has external microphone input without circuit input）.
In order to monitor and facilitate regulation recorded audio signals size, the small noise of recorded voice is big caused by preventing recording level too small
Or the too high caused recorded voice of recording level overloads the generation for the top distortion phenomenon that disappears, the also input attenuator circuit 7 and record
The input of sound volume level display circuit 11 is in parallel.Recording volume level display circuit 11 input be by resistance R5,
R6 is formed, and is on the one hand provided signal to subsequent conditioning circuit, is all 10K additionally, due to the two resistance, resistance is much larger than attenuator circuit 7
Input input resistance 0.505K, left and right acoustic channels cross-talk will not be caused, to ensure the isolation stereophonic effect of left and right acoustic channels.
In order to no longer be separately provided power circuit, directly can be shown using the USB power source 5V of computer as recording volume level
Show the power supply of circuit 11.Record volume level display circuit 11 power input six and four by USB power source plug 6 with
The USB jack 9 of notebook computer is in parallel（Or grafting）.Six and four pin of low-frequency power amplifier integrated circuit 12 are that its power supply is defeated
Entering end, its signal input pin three connects the sliding end and electric capacity C3 of signal behavior potentiometer 18, and its pin two and pin four are grounded, its
Pin eight and pin one are connected with each other after being connected by electric capacity C4 and resistance R8, and its pin five connects transformer BU's by electric capacity C5
Primary winding upper end, transformer BU primary winding lower end are grounded by resistance R9.Resistance R7 and electric capacity C6 series connection is followed by transformer
Between BU primary winding upper end and ground.Resistance R10 shows that light emitting diode D1 is connected in parallel on transformer BU after connecting with recording level
Auxiliary winding both ends.After being connected again with resistance R12 after the too high display light emitting diode D2 parallel connections of resistance R11 and recording level also simultaneously
It is associated in transformer BU auxiliary winding both ends.Transformer BU is step-up transformer, it is therefore an objective to is boosted with relatively low audio voltage into hair
The luminous starting voltage of minimum 1.8V needed for optical diode.
In order that the volume level display circuit 11 that must record is common to microphone signal output or circuit output both of which, record
Sound volume level display circuit 11 also carries signal behavior potentiometer 18.Signal behavior potentiometer 18 slides toward after lower slide
The sampling voltage at end reduces, and is shown suitable for the level of circuit output pattern.It is sliding after signal behavior potentiometer 18 slides toward upper end
The sampling voltage rise of moved end, shows suitable for the level of microphone output mode.It must all be calibrated under certain both of these case, it is fixed
Mark method：Regulate signal selecting switch 15 is on-state, adjusts computer audio frequency（Most handy recording etc. the sine wave of amplitude do
Signal）Output size so that recorded audio signals output plug 3 exports 3 millivolts, then Regulate signal selection potentiometer 18 so that recording
Level shows that light emitting diode D1 just starts to light, and writes down the position of now signal behavior potentiometer 18, the position is exactly
The graduation position of microphone output mode；Regulate signal selecting switch 15 is off-state again, adjusts computer audio frequency（Most handy recording
Etc. the sine wave of amplitude do signal）Amplitude so that recorded audio signals output plug 3 exports 300 millivolts, then Regulate signal selection electricity
Position device 18 so that recording level shows that light emitting diode D1 just starts to light, and that writes down now signal behavior potentiometer 18 should
Position, the position are exactly the graduation position of circuit output pattern.Finally signal behavior potentiometer 18 knob above-mentioned two
Put on " microphone recording " and " circuit recording " position.User when in use can be according to recording demand oneself selection.Correspondingly,
" circuit recording " when " microphone recording " when signal selecting switch 15 will also put on its above-mentioned on-state and off-state, by
User is adjusted in synchronism the two regulating members.Certainly, 18 two groups of difference resistances of signal behavior potentiometer are replaced after can also mixing up
For the mode of switch conversion and resistor voltage divider circuit combination.
Because microphone output mode is 3 millivolts of outputs, the recording level of regulation shows that light emitting diode D1 just starts to send out
Light, if many less than 3 millivolts, output level is too low, and recording volume is small and background noise increases, and now recording level is shown
Light emitting diode D1 does not light, and now prompts user recording level too low to be abnormal, user can prompt to heighten computer accordingly
Output volume is until recording level shows that light emitting diode D1 lights.Because the too high display light emitting diode D2 of recording level is connected on
In the divider be made up of resistance R11 and resistance R12, to make it luminous, it is necessary to voltage rise 40% just can, but this situation
Lower recording level is too high, can produce the top distortion that disappears.Therefore, prompt user to turn down computer volume and cause the too high display hair of recording level
Optical diode D2, which does not work, to be preferred.So avoid recording level it is too low or it is too high bring recording quality difference the drawbacks of.
Application method of the present utility model is very simple.Turned on the electricity according to above-mentioned insertion method, if recorded with microphone
Pattern, just signal selecting switch 15 is connected（Namely push " microphone recording " position）, while signal behavior potentiometer 18 is revolved
To " microphone recording " position, then adjust computer volume and cause recording level to show that light emitting diode D1 just starts luminous but recorded
The too high display light emitting diode D2 of sound level is not luminous can to start recording.If computer recording is replaced also may be used with recording pen 14
（Recording pen all shows that recording volume level display circuit 11 acts on more notable without recording level substantially）.It is if defeated with circuit
Exit pattern is recorded, and just signal selecting switch 15 is disconnected（Namely push " circuit recording " position）, while signal behavior current potential
Device 18 is screwed into " circuit recording ", then adjust computer volume cause recording level show light emitting diode D1 just start it is luminous but
The too high display light emitting diode D2 of recording level is not luminous can to start recording.Earphone jack 1 is inserted an earphone into, in recording
It can also hear that the sound that computer plays is monitored by earphone simultaneously.Volume is monitored in order to facilitate regulation, can also be inserted in earphone
The duplex potentiometer of 100-500 ohms of being connected in the left and right acoustic channels wire in hole 1 adjusts monitoring volume, or with volume
The earphone of regulation.
Remaining electronic circuitry part of the present utility model in addition to all kinds of plug cords, computer 8, recording pen 14, all install
In the casing that a volume is the big small plastic box half as large of cigarette case.Earphone jack 1, signal selecting switch 15, signal behavior
Knob, recording level on potentiometer 18 show that light emitting diode D1, the too high display light emitting diode D2 of recording level are installed
On casing.Each plug lead wire is welded direct on circuit board through casing.
The utility model component parameter reference value is as follows：
Resistance R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 are respectively 0.5,0.005,0.5,0.005,
10th, 10,0.01,1,0.02,1,0.6,0.4 kilohms（K）.Signal behavior potentiometer 18 is 100K..Electric capacity C1, C2, C3, C4,
C5, C6 are respectively 22,22,0.0022,10,220,0.1 microfarad（μ）.Low-frequency power amplifier integrated circuit 12 can be integrated with small-power
Power amplifier chips LM386.Recording level shows the light emitting diode D1 and too high display light emitting diode D2 of recording level respectively with general
Logical luminous green（Show that recorded audio signals are normal）And red（It is too high to alert recorded audio signals）Light emitting diode.Signal selecting switch 15
With the small button toggle switch of DPDT.Transformer BU can use the microminiature transformer of 3-5 times of step-up ratio（With old radio
That small output transformer primary and secondary, which upside down to use, also may be used）.Earphone jack 1 can use common 3.5 millimeters of stereo jack.
Claims (3)
1. a kind of computer audio frequency high-fidelity recording system, includes computer（8）, it is characterized in that earphone jack（1）Inserted with audio input
Head（2）After parallel connection again with attenuator circuit（7）Input it is in parallel, attenuator circuit（7）Output end and recorded audio signals output plug
（3）Parallel connection, recorded audio signals output plug（3）It is mutually inserted with recording input socket, audio input（2）Inserted with audio output
Mouthful（5）It is mutually inserted, attenuator circuit（7）In earth terminal be in series with signal selecting switch（15）.
2. the computer audio frequency high-fidelity recording system as described in claim 1, it is characterized in that attenuator circuit（7）Input also with
Recording volume level display circuit（11）Input be in parallel, record volume level display circuit（11）Power input
（16）With（17）Pass through USB power source plug（6）With the USB jack of computer（9）It is in parallel.
3. the computer audio frequency high-fidelity recording system as described in claim 1, it is characterized in that recording volume level display circuit
（11）With signal behavior potentiometer（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720856125.3U CN206977676U (en) | 2017-07-14 | 2017-07-14 | Computer audio frequency high-fidelity recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720856125.3U CN206977676U (en) | 2017-07-14 | 2017-07-14 | Computer audio frequency high-fidelity recording system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206977676U true CN206977676U (en) | 2018-02-06 |
Family
ID=61402369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720856125.3U Expired - Fee Related CN206977676U (en) | 2017-07-14 | 2017-07-14 | Computer audio frequency high-fidelity recording system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206977676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989965A (en) * | 2019-11-29 | 2020-04-10 | 安徽咪鼠科技有限公司 | Voice mouse based recording line switching method, system and device and readable storage medium |
-
2017
- 2017-07-14 CN CN201720856125.3U patent/CN206977676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989965A (en) * | 2019-11-29 | 2020-04-10 | 安徽咪鼠科技有限公司 | Voice mouse based recording line switching method, system and device and readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 Termination date: 20180714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |