CN110136750A - The method that a kind of pair of wire recording carries out digital conversion - Google Patents
The method that a kind of pair of wire recording carries out digital conversion Download PDFInfo
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- CN110136750A CN110136750A CN201910329339.9A CN201910329339A CN110136750A CN 110136750 A CN110136750 A CN 110136750A CN 201910329339 A CN201910329339 A CN 201910329339A CN 110136750 A CN110136750 A CN 110136750A
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- rewinding
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
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Abstract
The invention discloses the methods that a kind of pair of wire recording carries out digital conversion, are related to wire recording number conversion field, include the following steps: step 1: the pre-preparation of digital conversion environment；Step 2: the installation and configuration of converting apparatus；Step 3: the tone playing equipment preheating；Step 4: installation pierce tap；Step 5: adjustment audition；Step 6: playback acquisition；Step 7: data storage；Step 8: rewinding reduction；Step 9: digital transformation is completed.The method disclosed by the invention that digital conversion is carried out to wire recording; it may be implemented to carry out efficient and high quality digitlization transformation to steel wire audio file using existing wire recorder; steel wire audio file broadcasting time is greatly reduced, protects existing steel wire audio file to greatest extent；And it can effectively improve the signal sampling value of the audio analog signals of steel wire audio file and the numerical stability of level magnitudes.
Description
Technical field
The present invention relates to the sides that wire recording number conversion field more particularly to a kind of pair of wire recording carry out digital conversion
Method.
Background technique
The gramophone of Edison invented in 1877, creates the miracle in mankind's history, sound is allow to store and reproduce；
1898, Danish scientist guarantor is gloomy to have developed First magnetic recording reproducer, and has put on display guarantor in Paris fair in 1900
The magnetic recording reproducer of gloomy invention, this recorder are recorded sound on steel wire；Nineteen thirty-seven Marvin's has invented follow-on steel wire record
Sound machine has acoustic fidelity, the feature of sound quality grace.
Wire recording once played an important role in China audio file field, and there are many audio files so far still
It is retained in tape wire, because the time is remote, in addition the aging of steel wire itself, overwhelming majority tape wire is all located at present
In the edge urgently rescued, urgent need carries out digitlization conversion to it, should accomplish to the greatest extent may be used in wire recording Digitization
The audio-frequency information being stored in tape wire is really recorded on energy ground, while not being damaged to damaging property of tape wire itself
It loses.The serious aging of the steel wire of existing tape wire itself, the number that tape wire can play is fairly limited, may
Some are only capable of playing and will be broken several times, it is therefore desirable to be reduced as far as the steel wire when wire recording carries out number conversion
The broadcasting time of audiotape.How also stop production decades as the playback equipment wire recorder of tape wire simultaneously
Combine existing technical conditions efficiently and the digitlization of completion steel wire audio file in high quality using existing wire recorder
Transformation is always the Important Problems of related technical personnel's research.
Steel wire audio file is being carried out in conventional digitlization conversion process using existing wire recorder, related skill
Art personnel have found the passage with transformation time, and the signal sampling value of audio analog signals and the numerical value of level magnitudes can gradually drop
Low problem.
Therefore, those skilled in the art is dedicated to developing the method that a kind of pair of wire recording carries out digital conversion, the party
Method not only may be implemented to carry out efficiently steel wire audio file using existing wire recorder and the digitlization of high quality converts work
Make, greatly reduces steel wire audio file broadcasting time, protect existing steel wire audio file to greatest extent；And it can effectively mention
The signal sampling value of the audio analog signals of high steel wire audio file and the numerical stability of level magnitudes.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to reduce steel wire audio to the greatest extent
Archives broadcasting time, under the premise of protecting existing steel wire audio file to greatest extent, using existing wire recorder to steel wire sound
Frequency archives carry out efficient and high quality digitlization transformation, while ensuring the letter of the audio analog signals of steel wire audio file
The numerical stability of number sampled value and level magnitudes.
To achieve the above object, the present invention provides the method that a kind of pair of wire recording carries out digital conversion, including it is as follows
Step:
Step 1: the pre-preparation of digital conversion environment；
Step 2: the installation and configuration of converting apparatus；The converting apparatus includes tone playing equipment, capture card, computer, monitoring
Earphone, tone frequency channel wire and temperature control system；The tone playing equipment includes output interface, tone knob, function knob, output channel
Button, broadcasting/rewinding toggle switch, winding roll, magnetic head, the high scale of magnetic head are stirred in knob, volume knob, broadcasting/rewinding
Ruler, magnetic head notch, winding roll bayonet, down-lead card pressing plate button, down-lead card pressing plate, for drum and safety pole；The temperature control
System includes the first temperature-detecting device, second temperature detection device and mute Cooling and heating blower；
Step 3: the tone playing equipment preheating；
Step 4: installation pierce tap；
Step 5: adjustment audition；
Step 6: playback acquisition；
Step 7: data storage；
Step 8: rewinding reduction；
Step 9: digital transformation is completed.
Further, the step 1 includes the following steps:
Step 1.1: the environment temperature of the workplace of number conversion controls between 20 DEG C~27 DEG C, and humid control exists
Between 55-70%；
Step 1.2: staff dresses the equipment such as garment for clean room and dust-proof shoes, cap, medical-grade plastics gloves；
Step 1.3: the tone playing equipment should be placed on stable workbench, and the workbench is solid, rigid
Body, the workbench include damping device；
Step 1.4: the workbench does not have noise source, vibration source nearby；The noise criteria of the noise source is greater than
Equal to 70dB, the vibration severity of the vibration source is greater than 0.71mm/s；
Step 1.5: when digitized sampling, artificial touching workbench or converting apparatus is absolutely avoided, to prevent major structure at vibration
And lead to distorted signals.
Further, the step 2 includes the following steps:
Step 2.1: the tone knob of the tone playing equipment goes to closed state, and the power supply of the tone playing equipment is to close
Closed state；
Step 2.2: the capture card being connect with the computer, the capture card is configured to standby mode, the acquisition
All buttons of card are in original state；
Step 2.3: the anode of the tone frequency channel wire first end and ground line are inserted into the positive terminal of the output interface respectively
And ground terminal, and meet terminals standard, the terminals standard is that the metal part of the connector of tone frequency channel wire is entirely insertable pair
The port answered and fixing-stable；
Step 2.4: the second end of the tone frequency channel wire being accessed to the input terminal of the capture card, and meets terminals mark
It is quasi-；
Step 2.5: the monitoring headpone and the capture card are attached；
Step 2.6: connecting first temperature-detecting device and the mute Cooling and heating blower, the first temperature detection dress
Set the temperature for being configured to detect the magnetic head notch；Connect the second temperature detection device and mute Cooling and heating blower, described
Two temperature-detecting devices are configured to detect the surface temperature of the magnetic head entrance steel wire, the surface of the magnetic head entrance steel wire
Temperature should be maintained in the first temperature-control range, and first temperature-control range is 25 DEG C -27 DEG C, when the magnetic head entrance steel wire
When surface temperature is not in first temperature-control range, the mute Cooling and heating blower can start automatically, until the magnetic head import
The surface temperature of place's steel wire stops the mute Cooling and heating blower after being maintained in the first temperature-control range.
Further, the step 3 includes the following steps: the power supply for connecting the tone playing equipment, rotates the tone rotation
Button opens the power supply of the tone playing equipment, preheats to the tone playing equipment, and preheating time is 15-25 minutes, and preheating is completed
Standard be within 5 minutes or more periods, the temperature change of the magnetic head notch is less than 0.4 DEG C；The magnetic head notch
Temperature be more than or equal to 35 DEG C when, the mute Cooling and heating blower can start automatically, until the magnetic head notch temperature be less than etc.
Stop the mute Cooling and heating blower after 26 DEG C.
Further, the step 4 includes the following steps:
Step 4.1: wearing plastic gloves, installation whole process avoid both hands from directly touching steel wire；
Step 4.2: checking pierce tap, if there are rusty stain or missing leads, and there are the pierce taps of rusty stain, need
First derust；In the presence of the pierce tap of missing lead, lead of first plugging into is needed；
Step 4.3: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to rewinding
State；
Step 4.4: rotating the winding roll, move up the magnetic head, maintain an equal level until with magnetic head altitude scale top；
Step 4.5: the coil of wire being placed on described for drum, clockwise direction pull-out steel wire lead；
Step 4.6: steel wire must must pass through the winding roll bayonet by the magnetic head notch, lead；It is described by pinning
Down-lead card pressing plate button raises the down-lead card pressing plate, allows lead to pass through under the down-lead card pressing plate, unclamps the down-lead card
Pressing plate button blocks lead；
Step 4.7: adjustment is described to make steel wire be in straight condition for drum；
Step 4.8: stirring the toggle switch of the broadcasting/rewinding to middle position.
Further, the step 5 includes the following steps:
Step 5.1: rotating the tone knob, open tone playing equipment power supply, and knob is gone into appropriate gear；
Step 5.2: stirring the function knob to listening gear；
Step 5.3: it is logical to rotate the output for the output port accessed according to tone frequency channel wire described in the step 2.3
Road knob is to corresponding gear；
Step 5.4: rotating the volume knob, rotation to volume is until staff can normally catch；
Step 5.5: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to playing
State starts playback；
Step 5.6: during audition, staff should confirm whether audio signal normally enters earphone and acquisition software
In, exception such as occur need to be checked；
Step 5.7: rotating the volume knob and volume is controlled, until the Audio Meter amplitude peaks of acquisition
Value is less than -3db, and level magnitudes RMS average value is between -30dB to -10dB；If the volume knob is adjusted to maximum
When, still -20dB is not achieved in the level magnitudes peak value for acquiring audio, then the gain knob adjusted on capture card carries out gain, increases
Beneficial amplitude is no more than 15dB；
Step 5.8: the audition time is no more than 3 minutes, and rewinding restores after audition success, the tone playing equipment, the acquisition
The adjustment parameter that software is recorded in card and sampling remains unchanged.
Further, the step 6 includes the following steps:
Step 6.1: opening audio collection software, configure sample frequency and sampling precision, carry out recording acquisition；
Step 6.2: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to playing
State starts playback acquisition；
Step 6.3: in playback collection process, whether the audio signal that staff should use headphone monitor to acquire is normal,
Reason need to be searched extremely by, which such as occurring, is checked；The failure that playback is interrupted if there is non-steel wire fracture etc. continues sampling and records,
Carry out accident analysis and processing again after the completion of work；
Step 6.4: playback terminates, and that pins the broadcasting/rewinding stirs button, stirs stirring for the broadcasting/rewinding
It switchs to middle position；
Step 6.5: after being left white 3~5 seconds, closing the sampling recording function of audio software.
Further, the step 7 includes the following steps:
Step 7.1: using audio collection software, save audio content；
Step 7.2: digital document being named according to naming rule；
Step 7.3: recording the information of collection process.
Further, the step 8 includes the following steps:
Step 8.1: rotating the volume knob, the volume of the tone playing equipment is adjusted to minimum；
Step 8.2: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to rewinding
State；
Step 8.3: rewinding being waited to terminate；
Step 8.4: at the end of rewinding, lead can stir the safety pole, so that the tone playing equipment is in power supply and disconnect shape
State；
Step 8.5: pinning the down-lead card pressing plate button and unclamp the down-lead card pressing plate, by lead from the down-lead card pressure
It is taken out in plate；
Step 8.6: lead being taken out from the winding roll bayonet and the magnetic head notch respectively, then by tape wire
It is taken away from described for drum；
Step 8.7: by lead wound clockwise on wire recording band, lead the end of a thread being fixed with medical adhesive tape.
Further, the step 9 includes the following steps:
Step 9.1: the broadcasting/rewinding toggle switch of the tone playing equipment and the volume knob are restored；
Step 9.2: the function knob on the capture card is restored；
Step 9.3: rotating the tone knob and go to closing gear, close the power supply of the tone playing equipment.
Compared with prior art, implementation through the invention has reached following apparent technical effect:
1, the method that a kind of pair of wire recording provided by the invention carries out digital conversion, can use existing wire recorder
Efficient and high quality digitlization transformation is carried out to steel wire audio file；
2, the method that a kind of pair of wire recording provided by the invention carries out digital conversion, greatly reduces steel wire audio file
Broadcasting time protects existing steel wire audio file to greatest extent；
3, the method that a kind of pair of wire recording provided by the invention carries out digital conversion, can effectively improve steel wire audio shelves
The signal sampling value of the audio analog signals of case and the numerical stability of level magnitudes.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is the method and step figure that digital conversion is carried out to wire recording of a preferred embodiment of the invention；
Fig. 2 is the schematic top plan view of the tone playing equipment of a preferred embodiment of the invention；
Fig. 3 is the backsight enlarged diagram of the tone playing equipment of a preferred embodiment of the invention；
Fig. 4 is the schematic elevation view of the tone playing equipment of a preferred embodiment of the invention；
Fig. 5 is the output interface schematic diagram of the tone playing equipment of a preferred embodiment of the invention.
Wherein, 1- magnetic head, 2- magnetic head altitude scale, 3- winding roll bayonet, 4- down-lead card pressing plate, 5- down-lead card pressing plate are pressed
Button is stirred in button, 6- winding roll, 7- broadcasting/rewinding, 8- broadcasting/rewinding toggle switch, and 9- is for drum, 10- safety pole,
11- magnetic head notch, 12- volume knob, 13- function knob, 14- output channel knob, 15- tone knob, 16- output interface,
161- positive terminal, 162- ground terminal.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention
The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
Embodiment 1:
As shown in Figure 1, the method that a kind of pair of wire recording provided in this embodiment carries out digital conversion, including walk as follows
It is rapid:
Step 1: the pre-preparation of digital conversion environment；Specifically comprise the following steps:
Step 1.1: the environment temperature of the workplace of number conversion controls between 20 DEG C~27 DEG C, and humid control exists
Between 55-70%；
Step 1.2: staff dresses the equipment such as garment for clean room and dust-proof shoes, cap, medical-grade plastics gloves；
Step 1.3: tone playing equipment should be placed on stable workbench, and workbench is solid, rigid body, and work is flat
Platform includes damping device；
Step 1.4: workbench does not have noise source, vibration source nearby；The noise criteria of noise source is more than or equal to 70dB,
The vibration severity of vibration source is greater than 0.71mm/s；
Step 1.5: when digitized sampling, artificial touching workbench or converting apparatus is absolutely avoided, to prevent major structure at vibration
And lead to distorted signals.
Step 2: the installation and configuration of converting apparatus；Converting apparatus include tone playing equipment, capture card, computer, monitoring headpone,
Tone frequency channel wire and temperature control system；The model 288-1R type of tone playing equipment, brand Webster-Chicago, power requirement
For 120V, 60Hz, as shown in Figure 2, Figure 3 and Figure 4, including output interface 16, tone knob 15, function knob 13, output channel
Button 7, broadcasting/rewinding toggle switch 8, winding roll 6, magnetic head 1, magnetic are stirred in knob 14, volume knob 12, broadcasting/rewinding
Head height anale settting scale 2, magnetic head notch 11, winding roll bayonet 3, down-lead card pressing plate button 5, down-lead card pressing plate 4, for drum 9 and insurance
Column 10；Temperature control system includes the first temperature-detecting device, second temperature detection device and mute Cooling and heating blower；Ensuring to put
Sound equipment has under normal running conditions, and step 2 specifically comprises the following steps:
Step 2.1: the tone knob 15 of tone playing equipment goes to closed state, and the power supply of tone playing equipment is in off state；
Step 2.2: capture card being connect with computer, capture card is configured to standby mode, and all buttons of capture card are in
Original state；
Step 2.3: the anode of tone frequency channel wire first end and ground line being inserted into the positive terminal 161 of output interface 16 respectively and connect
Ground terminal 162, as shown in figure 5, and meet terminals standard, terminals standard is that the metal part of the connector of tone frequency channel wire is all inserted
Enter corresponding port and fixing-stable, the judgment criteria of fixing-stable is to draw tone frequency channel wire, connector with the power greater than 3N and less than 6N
It does not loosen；
Step 2.4: by the input terminal of the second end access capture card of tone frequency channel wire, and meeting terminals standard；
Step 2.5: monitoring headpone and capture card are attached；
Step 2.6: the first temperature-detecting device of connection and mute Cooling and heating blower, the first temperature-detecting device are configured to detect
The temperature of magnetic head notch 11；Connection second temperature detection device and mute Cooling and heating blower, second temperature detection device are configured to examine
The surface temperature of 1 entrance steel wire of magnetic head is surveyed, the surface temperature of 1 entrance steel wire of magnetic head should be maintained in the first temperature-control range,
First temperature-control range is 25 DEG C -27 DEG C, mute when the surface temperature of 1 entrance steel wire of magnetic head is not in the first temperature-control range
Cooling and heating blower can start automatically, until stopping is quiet after the surface temperature of 1 entrance steel wire of magnetic head is maintained in the first temperature-control range
Sound Cooling and heating blower, when mute Cooling and heating blower starts, face is not in the steel wire at magnetic head 1 to air outlet.
Step 3: tone playing equipment preheating；The power supply of tone playing equipment is connected, tone knob 15 is rotated, opens the electricity of tone playing equipment
Source preheats tone playing equipment, and preheating time is 15-25 minutes, preheats the standard of completion as in 5 minutes or more time
In section, the present embodiment is preferably 6 minutes, and the temperature change of magnetic head notch 11 is less than 0.4 DEG C；The temperature of magnetic head notch 11 be greater than etc.
When 35 DEG C, mute Cooling and heating blower can start automatically, stop after the temperature of magnetic head notch 11 is less than or equal to 26 DEG C mute cold
Air-heater, when mute Cooling and heating blower starts, air outlet not face magnetic head notch 11.
Step 4: installation pierce tap；Specifically comprise the following steps:
Step 4.1: wearing plastic gloves, installation whole process avoid both hands from directly touching steel wire；
Step 4.2: checking pierce tap, if there are rusty stain or missing leads, and there are the pierce taps of rusty stain, need advanced
Row derusting；In the presence of the pierce tap of missing lead, lead of first plugging into is needed；
Step 4.3: pinning broadcasting/rewinding and stir button 7, stir broadcasting/rewinding toggle switch 8 to rewinding state；
Step 4.4: rotation winding roll 6 moves up magnetic head 1, maintains an equal level until with 2 top of magnetic head altitude scale；
Step 4.5: coil of wire being placed on for drum 9, pulls out steel wire lead clockwise；
Step 4.6: steel wire must must pass through winding roll bayonet 3 by magnetic head notch 11, lead；By pinning down-lead card pressing plate
Button 5 raises down-lead card pressing plate 4, allows lead under down-lead card pressing plate 4 across release down-lead card pressing plate button 5 blocks lead；Such as
Lead is too long, and steel wire not yet enters magnetic head notch 11, and winding roll 6 can be rotated clockwise after blocking lead, until steel wire is touched
Until magnetic head notch 11；
Step 4.7: adjustment makes steel wire be in straight condition for drum 9；
Step 4.8: stirring broadcasting/rewinding toggle switch 8 to middle position.
Step 5: adjustment audition；Specifically comprise the following steps:
Step 5.1: rotation tone knob 15 opens tone playing equipment power supply, and knob is gone to appropriate gear；
Step 5.2: stirring function knob 13 to listening gear；
Step 5.3: the output port accessed according to step 2.3 sound intermediate frequency line, rotation output channel knob 14 arrive corresponding
Gear；
Step 5.4: rotation volume knob 12, rotation to volume are until staff can normally catch；
Step 5.5: it pins broadcasting/rewinding and stirs button 7, stir broadcasting/rewinding toggle switch 8 and arrive broadcast state,
Start playback；
Step 5.6: during audition, staff should confirm whether audio signal normally enters earphone and acquisition software
In, exception such as occur need to be checked；
Step 5.7: rotation volume knob 12 controls volume, until the Audio Meter amplitude peak of acquisition
Less than -3db, level magnitudes RMS average value is between -30dB to -10dB；If volume knob 12 is adjusted to maximum, adopt
Still -20dB is not achieved in the level magnitudes peak value of collection audio, then the gain knob adjusted on capture card carries out gain, gain range
No more than 15dB；
Step 5.8: the audition time is no more than 3 minutes, and rewinding restores after audition success, tone playing equipment, capture card and sampling
The adjustment parameter for recording software remains unchanged.
Step 6: playback acquisition；
Specifically comprise the following steps:
Step 6.1: opening audio collection software Adobe Audition 3.0, configuration sample frequency is 48kHz and sampling
Precision is 16bit, carries out recording acquisition after being left white 3-5 seconds；
Step 6.2: it pins broadcasting/rewinding and stirs button 7, stir broadcasting/rewinding toggle switch 8 and arrive broadcast state,
Start playback acquisition；
Step 6.3: in playback collection process, whether the audio signal that staff should use headphone monitor to acquire is normal,
Reason need to be searched extremely by, which such as occurring, is checked；The failure that playback is interrupted if there is non-steel wire fracture etc. continues sampling and records,
Carry out accident analysis and processing again after the completion of work；
Step 6.4: playback terminates, and pins broadcasting/rewinding and stirs button 7, stirs broadcasting/rewinding toggle switch 8 and arrives
Middle position；
Step 6.5: after being left white 3~5 seconds, closing the sampling recording function of audio software.
Step 7: data storage；Specifically comprise the following steps:
Step 7.1: using audio collection software Adobe Audition 3.0, save audio content, the lattice of digital document
Formula is wav；Digital document is encoded to Windows PCM；
Step 7.2: digital document being named according to naming rule；
Step 7.3: recording the information of collection process；Record content include the metadata of pierce tap, tone playing equipment metadata,
Acquire equipment and parameter, acquisition time and operator；The metadata of pierce tap includes brand, material, appearance text；Playback is set
Standby metadata includes brand, model；
Step 8: rewinding reduction；
Specifically comprise the following steps:
Step 8.1: the volume of tone playing equipment is adjusted to minimum by rotation volume knob 12；
Step 8.2: pinning broadcasting/rewinding and stir button 7, stir broadcasting/rewinding toggle switch 8 to rewinding state；
Step 8.3: rewinding being waited to terminate；
Step 8.4: at the end of rewinding, lead can stir safety pole 10, and tone playing equipment is made to be in power-off state；
Step 8.5: pinning down-lead card pressing plate button 5 and unclamp down-lead card pressing plate 4, lead is taken out from down-lead card pressing plate 4；
Step 8.6: lead being taken out from winding roll bayonet 3 and magnetic head notch 11 respectively, then by tape wire from confession
Drum 9 is taken away；
Step 8.7: by lead wound clockwise on wire recording band, lead the end of a thread being fixed on brand with medical adhesive tape
On the paper of label.
Step 9: digital transformation is completed；Specifically comprise the following steps:
Step 9.1: the broadcasting of tone playing equipment/rewinding toggle switch and volume knob 12 are restored；
Step 9.2: the function knob 13 on capture card is restored；
Step 9.3: rotation tone knob 15 goes to closing gear, closes the power supply of tone playing equipment.
Using the method for embodiment 1, four samplings, hardware environment, the sampling ginseng of four samplings are carried out to first group of sample
Number is identical with software tool, and audio sample of the steel wire surface temperature control in 4 different temperature the results are shown in Table 1 institute
Show；
Using the method for embodiment 1, four samplings, hardware environment, the sampling ginseng of four samplings are carried out to second group of sample
Number is identical with software tool, and audio sample of the steel wire surface temperature control in 4 different temperature the results are shown in Table 2 institutes
Show；
The 1 first group of influence of sample steel wire surface temperature change to digital sampled audio signal of table
| Serial number | Statistical item title | Sampling 1 | Sampling 2 | Sampling 3 | Sampling 4 |
| 1 | Steel wire surface temperature | 26.4℃ | 27.8℃ | 28.4℃ | 28.8℃ |
| 2 | Minimum sampled value | -20882 | -16344 | -15270 | -9880 |
| 3 | Maximum sampled value | 19748 | 16754 | 10642 | 8403 |
| 4 | Amplitude peak | -3.90dB | -5.82dB | -6.62dB | -10.40dB |
| 5 | The sampling that may be overflowed | 0 | 0 | 0 | 0 |
| 6 | Direct current offset | 0% | 0% | 0% | 0% |
| 7 | RMS minimum value | -117.59dB | -136.97dB | -132.50dB | -134.53dB |
| 8 | RMS maximum value | -7.47dB | -10.04dB | -13.44dB | -15.70dB |
| 9 | RMS average value | -13.94dB | 16.44dB | -19.50dB | -21.59dB |
| 10 | RMS is amounted to | -13.16dB | 15.66dB | -18.75dB | -20.85dB |
The 2 second groups of influences of sample steel wire surface temperature change to digital sampled audio signal of table
| Serial number | Statistical item title | Sampling 1 | Sampling 2 | Sampling 3 | Sampling 4 |
| 1 | Steel wire surface temperature | 26.6℃ | 29.2℃ | 31.2℃ | 32.8℃ |
| 2 | Minimum sampled value | -22408 | -14517 | -12647 | -9614 |
| 3 | Maximum sampled value | 21351 | 13899 | 10897 | 8582 |
| 4 | Amplitude peak | -3.29dB | -7.06dB | -8.26dB | -10.64dB |
| 5 | The sampling that may be overflowed | 0 | 0 | 0 | 0 |
| 6 | Direct current offset | 0% | 0% | 0% | 0% |
| 7 | RMS minimum value | -115.26dB | -128.77dB | -125.25dB | -134.76dB |
| 8 | RMS maximum value | -6.65dB | -11.21dB | -13.71dB | -15.68dB |
| 9 | RMS average value | -13.32dB | -17.36dB | -19.82dB | -21.54dB |
| 10 | RMS is amounted to | -12.52dB | 16.60dB | -19.06dB | -20.80dB |
By Tables 1 and 2 it is found that amplitude peak is much smaller than when steel wire surface temperature is small when steel wire surface temperature is greater than 28 DEG C
Amplitude peak when 27 DEG C.
Embodiment 2:
On the basis of embodiment 1, the sample frequency configured in step 6.1 is 96kHz and sampling precision is 24bit；The
One temperature-detecting device and second temperature detection device use Lei Tai RAYTEK MT4 infrared radiation thermometer；Capture card uses RME
Fireface UFX, tone frequency channel wire using SREXACT-SVC675 profession low noise microphone cable, (compile by the outer quilt of polyvinylchloride, net
16X9 shielded layer, 95% or more shielding rate, 60/0.10 99.97% or more OFC anaerobic copper conductor)；Neutrk-NP2X profession
Big two cores TS plug (nickel plating contact, nickel plating shell).
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. the method that a kind of pair of wire recording carries out digital conversion, which comprises the steps of:
Step 1: the pre-preparation of digital conversion environment；
Step 2: the installation and configuration of converting apparatus；The converting apparatus include tone playing equipment, capture card, computer, monitoring headpone,
Tone frequency channel wire and temperature control system；The tone playing equipment include output interface, tone knob, function knob, output channel knob,
Volume knob, broadcasting/rewinding stir button, broadcasting/rewinding toggle switch, winding roll, magnetic head, magnetic head altitude scale, magnetic
Head notch, winding roll bayonet, down-lead card pressing plate button, down-lead card pressing plate, for drum and safety pole；The temperature control system packet
Include the first temperature-detecting device, second temperature detection device and mute Cooling and heating blower；
Step 3: the tone playing equipment preheating；
Step 4: installation pierce tap；
Step 5: adjustment audition；
Step 6: playback acquisition；
Step 7: data storage；
Step 8: rewinding reduction；
Step 9: digital transformation is completed.
2. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 1 includes
Following steps:
Step 1.1: the environment temperature of the workplace of number conversion controls between 20 DEG C~27 DEG C, and humid control is in 55-
Between 70%；
Step 1.2: staff dresses the equipment such as garment for clean room and dust-proof shoes, cap, medical-grade plastics gloves；
Step 1.3: the tone playing equipment should be placed on stable workbench, and the workbench is solid, rigid body, institute
Stating workbench includes damping device；
Step 1.4: the workbench does not have noise source, vibration source nearby；The noise criteria of the noise source is more than or equal to
The vibration severity of 70dB, the vibration source are greater than 0.71mm/s；
Step 1.5: when digitized sampling, artificial touching workbench or converting apparatus is absolutely avoided, is led to prevent major structure at vibration
Cause distorted signals.
3. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 2 includes
Following steps:
Step 2.1: the tone knob of the tone playing equipment goes to closed state, and the power supply of the tone playing equipment is to close shape
State；
Step 2.2: the capture card being connect with the computer, the capture card is configured to standby mode, the capture card
All buttons are in original state；
Step 2.3: the anode of the tone frequency channel wire first end and ground line being inserted into the positive terminal of the output interface respectively and connect
Ground terminal, and meet terminals standard, the terminals standard is entirely insertable corresponding for the metal part of the connector of tone frequency channel wire
Port and fixing-stable；
Step 2.4: the second end of the tone frequency channel wire being accessed to the input terminal of the capture card, and meets terminals standard；
Step 2.5: the monitoring headpone and the capture card are attached；
Step 2.6: connecting first temperature-detecting device and the mute Cooling and heating blower, first temperature-detecting device are matched
It is set to the temperature for detecting the magnetic head notch；Connect the second temperature detection device and mute Cooling and heating blower, second temperature
Degree detection device is configured to detect the surface temperature of the magnetic head entrance steel wire, the surface temperature of the magnetic head entrance steel wire
It should be maintained in the first temperature-control range, first temperature-control range is 25 DEG C -27 DEG C, when the surface of the magnetic head entrance steel wire
When temperature is not in first temperature-control range, the mute Cooling and heating blower can start automatically, until the magnetic head entrance steel
The surface temperature of silk stops the mute Cooling and heating blower after being maintained in the first temperature-control range.
4. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 3 includes
Following steps: connecting the power supply of the tone playing equipment, rotates the tone knob, opens the power supply of the tone playing equipment, to institute
It states tone playing equipment to be preheated, preheating time is 15-25 minutes, preheats the standard of completion as in 5 minutes or more periods
Interior, the temperature change of the magnetic head notch is less than 0.4 DEG C；It is described mute when the temperature of the magnetic head notch is more than or equal to 35 DEG C
Cooling and heating blower can start automatically, stop the mute Cooling and heating blower after the temperature of the magnetic head notch is less than or equal to 26 DEG C.
5. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 4 includes
Following steps:
Step 4.1: wearing plastic gloves, installation whole process avoid both hands from directly touching steel wire；
Step 4.2: checking pierce tap, if there are rusty stain or missing leads, and there are the pierce taps of rusty stain, need advanced
Row derusting；In the presence of the pierce tap of missing lead, lead of first plugging into is needed；
Step 4.3: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to rewinding shape
State；
Step 4.4: rotating the winding roll, move up the magnetic head, maintain an equal level until with magnetic head altitude scale top；
Step 4.5: the coil of wire being placed on described for drum, clockwise direction pull-out steel wire lead；
Step 4.6: steel wire must must pass through the winding roll bayonet by the magnetic head notch, lead；By pinning the lead
Card pressing plate button raises the down-lead card pressing plate, and lead is allowed to pass through under the down-lead card pressing plate, unclamps the down-lead card pressing plate
Button blocks lead；
Step 4.7: adjustment is described to make steel wire be in straight condition for drum；
Step 4.8: stirring the toggle switch of the broadcasting/rewinding to middle position.
6. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 5 includes
Following steps:
Step 5.1: rotating the tone knob, open tone playing equipment power supply, and knob is gone into appropriate gear；
Step 5.2: stirring the function knob to listening gear；
Step 5.3: the output port accessed according to tone frequency channel wire described in the step 2.3 rotates the output channel rotation
Button is to corresponding gear；
Step 5.4: rotating the volume knob, rotation to volume is until staff can normally catch；
Step 5.5: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to playing shape
State starts playback；
Step 5.6: during audition, staff should confirm whether audio signal normally enters in earphone and acquisition software, such as
Exception occur need to be checked；
Step 5.7: rotating the volume knob and volume is controlled, until the Audio Meter amplitude peak of acquisition is small
In -3db, level magnitudes RMS average value is between -30dB to -10dB；If the volume knob is adjusted to maximum, adopt
Still -20dB is not achieved in the level magnitudes peak value of collection audio, then the gain knob adjusted on capture card carries out gain, gain range
No more than 15dB；
Step 5.8: the audition time be no more than 3 minutes, audition success after rewinding restore, the tone playing equipment, the capture card and
The adjustment parameter that software is recorded in sampling remains unchanged.
7. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 6 includes
Following steps:
Step 6.1: opening audio collection software, configure sample frequency and sampling precision, carry out recording acquisition；
Step 6.2: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to playing shape
State starts playback acquisition；
Step 6.3: in playback collection process, whether the audio signal that staff should use headphone monitor to acquire is normal, such as goes out
Now exception need to search reason and be checked；The failure that playback is interrupted if there is non-steel wire fracture etc. continues sampling and records, until
Accident analysis and processing are carried out after the completion of work again；
Step 6.4: playback terminates, and that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding
To middle position；
Step 6.5: after being left white 3~5 seconds, closing the sampling recording function of audio software.
8. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 7 includes
Following steps:
Step 7.1: using audio collection software, save audio content；
Step 7.2: digital document being named according to naming rule；
Step 7.3: recording the information of collection process.
9. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 8 includes
Following steps:
Step 8.1: rotating the volume knob, the volume of the tone playing equipment is adjusted to minimum；
Step 8.2: that pins the broadcasting/rewinding stirs button, stirs the toggle switch of the broadcasting/rewinding to rewinding shape
State；
Step 8.3: rewinding being waited to terminate；
Step 8.4: at the end of rewinding, lead can stir the safety pole, and the tone playing equipment is made to be in power-off state；
Step 8.5: pinning the down-lead card pressing plate button and unclamp the down-lead card pressing plate, by lead from the down-lead card pressing plate
It takes out；
Step 8.6: lead being taken out from the winding roll bayonet and the magnetic head notch respectively, then by tape wire from institute
It states and is taken away for drum；
Step 8.7: by lead wound clockwise on wire recording band, lead the end of a thread being fixed with medical adhesive tape.
10. the method for carrying out digital conversion to wire recording as described in claim 1, which is characterized in that the step 9 includes
Following steps:
Step 9.1: the broadcasting/rewinding toggle switch of the tone playing equipment and the volume knob are restored；
Step 9.2: the function knob on the capture card is restored；
Step 9.3: rotating the tone knob and go to closing gear, close the power supply of the tone playing equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329339.9A CN110136750B (en) | 2019-04-23 | 2019-04-23 | Method for digitally converting steel wire recording |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910329339.9A CN110136750B (en) | 2019-04-23 | 2019-04-23 | Method for digitally converting steel wire recording |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111798883A (en) * | 2020-07-09 | 2020-10-20 | 卢轩 | Data storage device of linear medium |
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|---|---|---|---|---|
| GB261136A (en) * | 1925-09-09 | 1926-11-18 | Stevens Albert | Improvements in and relating to the recording and reproduction of sound |
| US2537260A (en) * | 1947-03-10 | 1951-01-09 | Websterchicago Corp | Wire recorder |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB261136A (en) * | 1925-09-09 | 1926-11-18 | Stevens Albert | Improvements in and relating to the recording and reproduction of sound |
| US2537260A (en) * | 1947-03-10 | 1951-01-09 | Websterchicago Corp | Wire recorder |
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| 聂曼影: "钢丝录音档案抢救平台研究", 《档案学研究》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111798883A (en) * | 2020-07-09 | 2020-10-20 | 卢轩 | Data storage device of linear medium |
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| CN110136750B (en) | 2021-03-16 |
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