CN207753726U - A kind of digital audio audiomonitor - Google Patents
A kind of digital audio audiomonitor Download PDFInfo
- Publication number
- CN207753726U CN207753726U CN201820096303.1U CN201820096303U CN207753726U CN 207753726 U CN207753726 U CN 207753726U CN 201820096303 U CN201820096303 U CN 201820096303U CN 207753726 U CN207753726 U CN 207753726U
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- module
- digital audio
- audiomonitor
- control module
- audio
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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 utility model uses is converted directly into sound, sound is undistorted as the audio select equipment of broadcast transmitter after receiving digital audio and video signals.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 utility model is related 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
There are one monitoring units for some headend equipments meeting band, 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.
Utility model content
The purpose of this utility model is to provide a kind of digital audio audiomonitor, to realize to the signal of digital audio source
Monitoring.Therefore, the utility model 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 institute
Volume control module connection is stated, 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 connects with the volume control module, detection module and power module
It connects.
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 includes indicator light, button and display screen, the indicator light, button and
Display screen is connect with the control chip.
The utility model has the beneficial effects that：The digital audio audiomonitor that the present invention uses, as broadcast transmitter
Audio select equipment is converted directly into sound, sound is undistorted after receiving digital audio and video signals.Sound is listened to by earphone, it can
Whether there is signal to send out with distinguishing signal source, can also distinguish that source of sound whether there is quality problems.The equipment volume is small and exquisite, portable
It uses, 6-8 hour of sustainable work under electricity abundance.
Description of the drawings
Fig. 1 is the structure diagram of digital audio audiomonitor in the utility model.
Specific implementation mode
The embodiments of the present invention are explained in detail below, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
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 constitutes 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 use 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 use CS3310 chips, it is a complete 3-D digital sound used exclusively for audio system
Amount control chip.CS3310 includes the resistance that array matches and the active output stage of low noise, can open 600 loads.It is total adjustable
127 decibels of adjusting range can be adjusted with the stepping of 0.5 dB, the increasing of the decaying and 31.5 dB of adjustable 95.5 dB of maximum
Benefit.CS3310 chips are connect with control chip, and control chip is by controlling CS3310 chips, to realize to audio signal volume
Control, to realize 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 volume control module output is detected on road, and detecting circuit is by resistance, capacitance and three
Pole pipe is constituted, 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, 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 makes the equipment volume small and exquisite, portable to make
With.
Power module includes lithium battery, and lithium battery is powered to entire digital audio audiomonitor.Digital audio audiomonitor
Further include front panel and rear panel, indicator light, button, power switch and display screen are provided on front panel.It is arranged 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, cisco unity malfunction.In charging process, charging indicator light is bright, extinguishes after being full of；When 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, range -96dB ~ 31.5dB, the referred to herein as yield value of electronic sound volume chip CS3310.L sounds
Column and R sound column items, can indicate 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 indicating 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 utility model as electronic equipment, can monitor as audio-source
Electronic equipment output the presence or absence of AES audio signals, also can detect the size of the AES audio signals of electronic equipment output, make
For the electronic equipment of audio-source can be according to the digital audio audiomonitor of this practicality monitoring and testing result, adjustment electronics set
The failure of standby output and detection electronic equipment.User can by earphone or sound column item come monitor the presence or absence of AES audio signals,
Whether the size and sound of the volume of audio signal are defective in quality, if listening to whether no AES audio signals or sound have matter
Amount problem can then feed back to electronic equipment, and electronic equipment can carry out corresponding fault location, if the audio signal monitored
Volume is too small or too big, then can be adjusted to volume by volume adjustment button, by volume adjustment to OK range, this
When digital audio audiomonitor display screen on volume gain can be used as audio-source electronic equipment adjust output AES audio signals
The reference value of power.The digital audio audiomonitor of the utility model is powered using lithium battery, does not have to external power supply so that
The portable devices use.
As described above, the only preferred embodiment of the utility model not is used for limiting the reality of the utility model
Apply range, i.e., it is all according to equivalent changes and modifications made by the utility model, it is all that the utility model claims range is covered,
Here it no longer illustrates one by one.
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 includes sample rate conversion circuit to change the mold block, and 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.
6. a kind of digital audio audiomonitor according to claim 1, which is characterized in that the analogue audio frequency output interface
Module includes 6.35mm earphone jacks.
7. a kind of digital audio audiomonitor according to claim 1-6 any one, which is characterized in that the power supply mould
Block includes lithium battery.
8. a kind of digital audio audiomonitor according to claim 1-6 any one, which is characterized in that the number sound
Frequency audiomonitor includes charging interface.
9. a kind of 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 |
|---|---|---|---|
| CN201820096303.1U CN207753726U (en) | 2018-01-19 | 2018-01-19 | A kind of digital audio audiomonitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096303.1U CN207753726U (en) | 2018-01-19 | 2018-01-19 | A kind of digital audio audiomonitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753726U true CN207753726U (en) | 2018-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820096303.1U Expired - Fee Related CN207753726U (en) | 2018-01-19 | 2018-01-19 | A kind of digital audio audiomonitor |
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| Country | Link |
|---|---|
| CN (1) | CN207753726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183761A (en) * | 2018-01-19 | 2018-06-19 | 杭州众传数字设备有限公司 | A kind of digital audio audiomonitor |
-
2018
- 2018-01-19 CN CN201820096303.1U patent/CN207753726U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183761A (en) * | 2018-01-19 | 2018-06-19 | 杭州众传数字设备有限公司 | A kind of digital audio audiomonitor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 Termination date: 20210119 |