CN108183761A - A kind of digital audio audiomonitor - Google Patents
A kind of digital audio audiomonitor Download PDFInfo
- Publication number
- CN108183761A CN108183761A CN201810053772.XA CN201810053772A CN108183761A CN 108183761 A CN108183761 A CN 108183761A CN 201810053772 A CN201810053772 A CN 201810053772A CN 108183761 A CN108183761 A CN 108183761A
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- Prior art keywords
- module
- digital audio
- audiomonitor
- control module
- audio
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 230000005236 sound signal Effects 0.000 claims description 25
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- UPMXNNIRAGDFEH-UHFFFAOYSA-N 3,5-dibromo-4-hydroxybenzonitrile Chemical compound OC1=C(Br)C=C(C#N)C=C1Br UPMXNNIRAGDFEH-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
A kind of digital audio audiomonitor, including AES/EBU sample rate conversion modules, D/A converter module, volume control module, detection module, control module, analogue audio frequency output interface module and power module；The AES/EBU sample rate conversion modules are connect with the D/A converter module, the D/A converter module is connect with the volume control module, the volume control module is connect with the detection module and analogue audio frequency output interface module, the control module includes control chip, and the control module is connect with the volume control module, detection module and power module.The digital audio audiomonitor that the present invention uses as the audio select equipment of broadcast transmitter, after receiving digital audio and video signals, is converted directly into sound, sound is undistorted.Sound is listened to by earphone, whether there can be signal to send out with distinguishing signal source, can also distinguish that source of sound whether there is quality problems.
Description
Technical field
The present invention relates to audio-frequency amplifier field more particularly to a kind of digital audio audiomonitors.
Background technology
With development in science and technology, China's radio and television services achieve further development, and digitlization is increasingly becoming
The inexorable trend of Broadcast Development.It is general to be exactly there is presently no the equipment that the signal quality to digital audio source directly detects
Some headend equipments meeting band is there are one monitoring unit, but such equipment is undoubtedly expensive；And some equipment is even more without this
Kind monitoring unit, thus knows nothing the signal quality of digital audio source.Digital audio can be monitored therefore, it is necessary to a
The equipment of the signal in source.
Invention content
The object of the present invention is to provide a kind of digital audio audiomonitor, to realize the prison to the signal of digital audio source
It surveys.Therefore, the present invention uses following technical scheme.
A kind of digital audio audiomonitor, including AES/EBU sample rate conversion modules, D/A converter module, volume control
Module, detection module, control module, analogue audio frequency output interface module and power module；
The AES/EBU sample rate conversion modules are connect with the D/A converter module, the D/A converter module and the sound
Control module connection is measured, the volume control module is connect with the detection module and analogue audio frequency output interface module, described
Control module includes control chip, and the control module is connect with the volume control module, detection module and power module.
Preferably, the AES/EBU sample rate conversion modules include sample rate conversion circuit, by the AES number sounds of input
Frequency signal is converted into I2S digital audio and video signals.
Preferably, the D/A converter module includes D/A converting circuit, and AES/EBU sample rate conversion modules are exported
I2S digital audio and video signals are converted into analog audio signal.
Preferably, the volume control module includes volume control chip, the volume control chip and the control core
Piece connects, and control chip is by controlling the volume control chip, to realize the control to audio signal volume.
Preferably, the detection module includes detecting circuit, and the detecting circuit detects the volume control module output
Analog audio signal voltage magnitude peak value.
Preferably, the analogue audio frequency output interface module includes 6.35mm earphone jacks.
Preferably, which is characterized in that the power module includes lithium battery.
Preferably, the digital audio audiomonitor includes charging interface.
Preferably, the digital audio audiomonitor include indicator light, button and display screen, the indicator light, button and
Display screen is connect with the control chip.
The beneficial effects of the invention are as follows：The digital audio audiomonitor that the present invention uses, the audio as broadcast transmitter
Audiomonitor after receiving digital audio and video signals, is converted directly into sound, sound is undistorted.Sound is listened to by earphone, can be distinguished
Whether level signal source has signal to send out, and can also distinguish that source of sound whether there is quality problems.The equipment volume is compact, portable to make
With sustainable 6-8 hour of work under electricity abundance.
Description of the drawings
Fig. 1 is the structure diagram of digital audio audiomonitor in the present invention.
Specific embodiment
The embodiment of the present invention is explained in detail below, the example of the embodiment is shown in the drawings, wherein identical from beginning to end
Or similar label represents same or similar element or the element with same or like function.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
As shown in Figure 1, a kind of digital audio audiomonitor, including AES/EBU sample rate conversion modules, digital-to-analogue conversion mould
Block, volume control module, detection module, control module, analogue audio frequency output interface module and power module.Control module includes
Chip is controlled, control chip can be microcontroller or CPU etc..The signal of digital audio source is inputted by AES/EBU digital signals
Interface is input in digital audio audiomonitor, and AES/EBU sample rate conversion modules include sample rate conversion circuit, and sample rate turns
It changes circuit and will enter into the AES digital audio and video signals of amplifier and be converted into I2S digital audio and video signals, sample rate conversion circuit is by adopting
Sample rate converter ic CS8422 and peripheral components（Crystal oscillator, configuration circuit etc.）It forms AES audio signals and turns serial i 2S audios
Signal circuit.AES/EBU sample rate conversion modules are connect with D/A converter module, the output of AES/EBU sample rate conversion modules
I2S audio signals are input to D/A converter module.D/A converter module includes D/A converting circuit, and D/A converting circuit is by AES/
The I2S digital audio and video signals of EBU sample rate conversion modules output are converted into analog audio signal, and D/A converting circuit uses
ES9023 chips employ the advanced SABRE conversions technology of industry.D/A converter module is connect with volume control module,
The analog audio signal of D/A converter module output is input to volume control module.Volume control module includes volume control core
Piece, volume control chip employ CS3310 chips, it is a complete 3-D digital sound used exclusively for audio system
Amount control chip.CS3310 includes the resistance of array matching and the output stage that low noise is active, can open 600 loads.It is total adjustable
127 decibels of adjusting range can be adjusted with the stepping of 0.5 dB, the attenuation of adjustable 95.5 dB of maximum and the increasing of 31.5 dB
Benefit.CS3310 chips are connect with control chip, and control chip is by controlling CS3310 chips, to realize to audio signal volume
Control, so as to fulfill the adjusting to audio signal volume.
Volume control module is connect with detection module, and the analog audio signal after volume control module adjusting volume is input to
Detection module.Detection module carries out volume detection to the analog audio signal of input.Detection module includes detecting circuit, detection electricity
The peak value of the voltage magnitude of the analog audio signal of road detection volume control module output, detecting circuit is by resistance, capacitance and three
Pole pipe is formed, and detecting circuit is connect with control chip, and the peak value that detecting circuit detects is input in control chip, calculates sound
The volume of frequency signal.Control chip can show the result of detection on a display screen, when user has found audio signal
It, can be by adjusting the button of volume come operation and control chip when volume is excessive or too small, control chip is by controlling CS3310
The pad value or yield value of chip adjust the size of the volume of output, so as to by the volume adjustment of audio signal to suitable model
It encloses.Volume control module is also connect with analogue audio frequency output interface module, and analogue audio frequency output interface module includes 6.35mm ears
Machine transplanting of rice hole can be exported sound by earphone.The structure of digital audio audiomonitor so that the equipment volume is compact, portable to make
With.
Power module includes lithium battery, and lithium battery is powered to entire digital audio audiomonitor.Digital audio audiomonitor
Front panel and rear panel are further included, indicator light, button, power switch and display screen are provided on front panel.It is set on rear panel
There are AES/EBU digital signals input interface and charging interface.Indicator light, button, power switch and display screen and all with control core
Piece connects.Button includes volume adjustment button, is divided into volume and adds button and volume down button, for adjusting the size of volume.Refer to
Show that lamp includes power supply indicator, low-voltage indicator light and charging indicator light.Supply voltage maximum 4.1V, battery capacity have been expired, electricity
Pressure is less than 3.3V, it is impossible to work normally.In charging process, charging indicator light is bright, extinguishes after being full of；During not enough power supply, low-voltage
Indicator light is lighted.Supply voltage, volume gain, L sound columns item and R sound column items can be shown on display screen.Audio gain is to sound
The yield value of frequency signal adjustment, the yield value of range -96dB ~ 31.5dB, referred to herein as electronic sound volume chip CS3310.L sounds
Column and R sound column items, can represent the volume of the audio signal of left and right acoustic channels, sound column item with the variation of volume and
Variation, volume is smaller, and sound column item is shorter, and volume is bigger, and sound column item is longer.Sound column item can be used for representing having for audio signal
Nothing.Charging interface can be USB interface, for charging to lithium battery.The signal of digital audio source passes through AES/EBU digital signals
Input interface is input in digital audio audiomonitor, and AES/EBU digital signals input interface can be Cannon.
Audiomonitor of the digital audio audiomonitor of the present invention as electronic equipment, can monitor the electricity as audio-source
The presence or absence of AES audio signals of sub- equipment output, also can detect the size of the AES audio signals of electronic equipment output, as sound
The electronic equipment of frequency source can be according to the digital audio audiomonitor of this practicality monitoring and testing result, adjust electronic equipment
Output and the failure of detection electronic equipment.User can monitor the presence or absence of AES audio signals, audio by earphone or sound column item
Whether the size and sound of the volume of signal are defective in quality, if listening to whether no AES audio signals or sound have quality to ask
Topic, then can feed back to electronic equipment, and electronic equipment can carry out corresponding fault location, if the volume for the audio signal monitored
It is too small or too big, then volume can be adjusted by volume adjustment button, volume adjustment to OK range counts at this time
Volume gain on word tone frequency audiomonitor display screen can be used as audio-source electronic equipment to adjust output AES audio signal power
Reference value.The digital audio audiomonitor of the present invention is powered using lithium battery, without external power supply so that the equipment is just
Take use.
As described above, only presently preferred embodiments of the present invention is not used for limiting the practical range of the present invention, i.e.,
All equivalent changes and modifications made according to the present invention, are all that scope of the invention as claimed is covered, no longer illustrate one by one here.
Claims (9)
1. a kind of digital audio audiomonitor, which is characterized in that including AES/EBU sample rate conversion modules, D/A converter module,
Volume control module, detection module, control module, analogue audio frequency output interface module and power module；
The AES/EBU sample rate conversion modules are connect with the D/A converter module, the D/A converter module and the sound
Control module connection is measured, the volume control module is connect with the detection module and analogue audio frequency output interface module, described
Control module includes control chip, and the control module is connect with the volume control module, detection module and power module.
2. a kind of digital audio audiomonitor according to claim 1, which is characterized in that the AES/EBU sample rates turn
It changes the mold block and includes sample rate conversion circuit, the AES digital audio and video signals of input are converted into I2S digital audio and video signals.
3. a kind of digital audio audiomonitor according to claim 1, which is characterized in that the D/A converter module includes
The I2S digital audio and video signals that AES/EBU sample rate conversion modules export are converted into analog audio signal by D/A converting circuit.
4. a kind of digital audio audiomonitor according to claim 1, which is characterized in that the volume control module includes
Volume control chip, the volume control chip are connect with the control chip, and control chip is by controlling the volume control
Chip, to realize the control to audio signal volume.
5. a kind of digital audio audiomonitor according to claim 1, which is characterized in that the detection module includes detection
Circuit, the detecting circuit detect the peak value of the voltage magnitude of the analog audio signal of the volume control module output.
A kind of 6. digital audio audiomonitor according to claim 1, which is characterized in that the analogue audio frequency output interface
Module includes 6.35mm earphone jacks.
A kind of 7. digital audio audiomonitor according to claim 1-6 any one, which is characterized in that the power supply mould
Block includes lithium battery.
A kind of 8. digital audio audiomonitor according to claim 1-6 any one, which is characterized in that the number sound
Frequency audiomonitor includes charging interface.
A kind of 9. digital audio audiomonitor according to claim 1-6 any one, which is characterized in that the number sound
Frequency audiomonitor includes indicator light, button and display screen, and the indicator light, button and display screen are connect with the control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810053772.XA CN108183761A (en) | 2018-01-19 | 2018-01-19 | A kind of digital audio audiomonitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810053772.XA CN108183761A (en) | 2018-01-19 | 2018-01-19 | A kind of digital audio audiomonitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108183761A true CN108183761A (en) | 2018-06-19 |
Family
ID=62550896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810053772.XA Pending CN108183761A (en) | 2018-01-19 | 2018-01-19 | A kind of digital audio audiomonitor |
Country Status (1)
| Country | Link |
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| CN (1) | CN108183761A (en) |
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|---|---|---|---|---|
| JP2004221711A (en) * | 2003-01-10 | 2004-08-05 | Teac Corp | Sound volume adjustment apparatus |
| CN101394156A (en) * | 2008-11-06 | 2009-03-25 | 捷顶微电子（上海）有限公司 | Audio processing system and processing method thereof |
| CN101459415A (en) * | 2008-11-26 | 2009-06-17 | 苏州顺芯半导体有限公司 | Volume automatic control method and circuit in digital audio field |
| CN201398228Y (en) * | 2009-05-15 | 2010-02-03 | 北京东方艾迪普数码科技有限公司 | Multiple format multiple input video/audio signal monitoring power amplifier |
| US20110184540A1 (en) * | 2010-01-28 | 2011-07-28 | Himax Media Solutions, Inc. | Volume adjusting method for digital audio signal |
| CN102195581A (en) * | 2010-03-18 | 2011-09-21 | 承景科技股份有限公司 | Method for adjusting volume of digital audio signal |
| CN207753726U (en) * | 2018-01-19 | 2018-08-21 | 杭州众传数字设备有限公司 | A kind of digital audio audiomonitor |
-
2018
- 2018-01-19 CN CN201810053772.XA patent/CN108183761A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004221711A (en) * | 2003-01-10 | 2004-08-05 | Teac Corp | Sound volume adjustment apparatus |
| CN101394156A (en) * | 2008-11-06 | 2009-03-25 | 捷顶微电子（上海）有限公司 | Audio processing system and processing method thereof |
| CN101459415A (en) * | 2008-11-26 | 2009-06-17 | 苏州顺芯半导体有限公司 | Volume automatic control method and circuit in digital audio field |
| CN201398228Y (en) * | 2009-05-15 | 2010-02-03 | 北京东方艾迪普数码科技有限公司 | Multiple format multiple input video/audio signal monitoring power amplifier |
| US20110184540A1 (en) * | 2010-01-28 | 2011-07-28 | Himax Media Solutions, Inc. | Volume adjusting method for digital audio signal |
| CN102195581A (en) * | 2010-03-18 | 2011-09-21 | 承景科技股份有限公司 | Method for adjusting volume of digital audio signal |
| CN207753726U (en) * | 2018-01-19 | 2018-08-21 | 杭州众传数字设备有限公司 | A kind of digital audio audiomonitor |
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