CN201413623Y - Monitor with function of audio monitor - Google Patents
Monitor with function of audio monitor Download PDFInfo
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- CN201413623Y CN201413623Y CN2009200568739U CN200920056873U CN201413623Y CN 201413623 Y CN201413623 Y CN 201413623Y CN 2009200568739 U CN2009200568739 U CN 2009200568739U CN 200920056873 U CN200920056873 U CN 200920056873U CN 201413623 Y CN201413623 Y CN 201413623Y
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Abstract
The utility model discloses a monitor with a function of audio monitor, which comprises a display screen, and is characterized by also comprising a data sampling module, a data processing module, a dynamic audio sliding column module and a display drive module, wherein the data sampling module is used for sampling voltage of audio signals, the data processing module is used for converting the audio voltage after sampling to a dB value, the dynamic audio sliding column module is used for generating a dynamic audio sliding column with relative length according to the dB value and sending the dynamic audio sliding column to the display drive module, and the display drive module is used for overlapping the dynamic audio sliding column on the original audio signals, thereby displaying the dynamic audio sliding column in real time on the display screen. The utility model adopts an OSD graphics menu to realize the function of the audio monitor without needing the hardware cost, and the audiovolume display is more accurate and reliable.
Description
Technical field
The utility model relates to monitor, especially, is a kind of monitor with the audio surveillance function.
Background technology
In some occasions, audio frequency often needs to monitor, rather than monitors.For example in the radio and television studio centre, have tens up to a hundred monitor to play different programs at the same time often simultaneously, these programs have comprised Voice ﹠ Video.In these occasions, people can monitor all videos simultaneously, but are difficult to monitor simultaneously all audio frequency.Reason has two, and the first, people can't differentiate the audio frequency on each road, can only hear noisy sound; The second, people can't judge the size of volume, can only very subjectively judge because monitor, and can't obtain definite data; Therefore, in these occasions, people need audio surveillance equipment.
The simplest audio surveillance form is to use the decibel meter that can show audio frequency signal amplitude.Two types decibel meter is arranged, and promptly VU table and PPM show, and what the VU table showed is the average volume level of sound signal, and what the PPM table showed is the peak program level of sound signal.Owing to find, between the peakreading of PPM and VU table, good mean difference is arranged, this difference is 8dB (decibel).Thus, these two kinds of decibel meters in fact all have identical reading to audio program.
Audio quantization all uses dB (decibel) to represent usually, and this is because sound signal has very wide dynamic range, and dB can represent the measured value of voltage or power with the functional form of logarithm.
V
0=measuring voltage level, V
1=reference voltage level,
P
0=measurement power level, P
1=reference power level,
P=power, R=resistance
Usually in measuring, audio frequency also uses this unit of dBm.DBm is as reference power with 1 milliwatt in the 600 Ω loads.：
dBm＝10 logP
0/0.001W
So the voltage that 0dBm is illustrated in the 600 Ω loads is 0.775V.
China utility model patent ZL200620031158.6 discloses a kind of LCD monitor, and it comprises: a control interface module, and its output terminal is connected with the driver module input end, is used to accept user instruction, and driver module is passed in instruction; One driver module, its input end is connected with control interface module output terminal, its output terminal is connected with the LCD MODULE input end, be used to accept the vision signal of outside input, and be converted into according to the instruction of control interface module and be fit to the digital rgb signal that LCD MODULE shows, together offer LCD MODULE with synchronizing clock signals; One LCD MODULE, its input end is connected with the driver module output terminal, is used to accept the signal of driver module, and it is shown on display panels; One power module is connected with above-mentioned each module, is used to circuitry that power supply is provided; It is characterized in that it also comprises an audio level display module, its power input is connected with power module, is used to accept the sound signal of outside input and show level and the dynamic change state.Its way is, increases an external audio level display module, as LED light, needs extra driving circuit and equipment like this.
The utility model content
At the deficiencies in the prior art, the purpose of this utility model is to provide a kind of monitor with the audio surveillance function, it is the monitor that a kind of OSD of employing menu shows the audio surveillance function, because the decibel meter of audio surveillance is realized in menu fully, do not need to increase any hardware circuit, therefore cost is lower, and reliability is stronger.
The utility model is achieved by the following technical programs.
A kind of monitor with the audio surveillance function comprises display screen, it is characterized in that also comprising
---data sampling module is used for the voltage of sound signal is sampled;
---data processing module is used for the audio voltage after the sampling is converted to the dB value;
---dynamic audio frequency sliding column module is used for producing the dynamic audio frequency sliding column of respective length and being sent to driver module according to above-mentioned dB value;
---driver module is used for dynamic audio frequency sliding column is superimposed upon original video signal, thereby shows dynamic audio frequency sliding column in real time on display screen.
Further, also comprise
Audio frequency table module is used to produce a series of rectangle frame, and rectangle frame is combined into one or two posts, is superimposed upon on the original video signal by driver module.Audio frequency table module and dynamic audio frequency sliding column module overlaid, thus the intensity of sound signal observed more intuitively.
Further, also comprise
Audio frequency table numerical module is used to produce a series of numerical value corresponding to audio frequency table module, is superimposed upon on the original video signal by driver module.The rectangle frame of the numerical value of audio frequency table numerical module and audio frequency table module is complementary, thereby can observe the intensity of sound signal more intuitively.
Further, data sampling module comprises two passages, respectively to the real-time synchronized sampling of left and right sound channels two-way audio signal.
OSD is the abbreviation of on-screen display, and promptly on-screen menu shows.In common display or TV, press the rectangle menu of every reconciling items information that screen ejects behind the Menu key, can comprise that to the every working index of display color, pattern, geometric configuration etc. adjust by this menu, thereby reach best user mode.
The beneficial effects of the utility model are:
1, provides a kind of monitor that audio frequency amount Presentation Function is arranged, reached the purpose of audio surveillance;
2, the audio frequency amount shows it is the graphical menu of a kind of OSD, need not hardware cost;
3, total digitalization is handled, and it is more accurate, more reliable that the audio frequency amount shows.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is an another kind of structural representation of the present utility model;
Fig. 3 is an another kind of structural representation of the present utility model;
Fig. 4 is a kind of display mode of display screen;
Fig. 5 is the another kind of display mode of display screen.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
The utility model is a kind of monitor, especially, is a kind of broadcast quality monitor, and its audio frequency and video input interface is the SDI component signal.This monitor comprises Video processing and Audio Processing, also can comprise power amplifier and loudspeaker.
As shown in Figure 1, a kind of monitor with the audio surveillance function comprises display screen, also comprises
---data sampling module is used for the voltage of sound signal is sampled;
---data processing module is used for the audio voltage after the sampling is converted to the dB value;
---dynamic audio frequency sliding column module is used for producing the dynamic audio frequency sliding column of respective length and being sent to driver module according to above-mentioned dB value;
---driver module is used for dynamic audio frequency sliding column is superimposed upon original video signal, thereby shows dynamic audio frequency sliding column in real time on display screen.
As shown in Figure 2, a kind of monitor with the audio surveillance function comprises display screen, also comprises
---data sampling module is used for the voltage of sound signal is sampled;
---data processing module is used for the audio voltage after the sampling is converted to the dB value;
---dynamic audio frequency sliding column module is used for producing the dynamic audio frequency sliding column of respective length and being sent to driver module according to above-mentioned dB value;
---driver module is used for dynamic audio frequency sliding column is superimposed upon original video signal, thereby shows dynamic audio frequency sliding column in real time on display screen;
---audio frequency table module, be used to produce a series of rectangle frame, rectangle frame is combined into one or two posts, is superimposed upon on the original video signal by driver module.
If data sampling module comprises two passages, respectively to the real-time synchronized sampling of left and right sound channels two-way audio signal.Then can realize supervision effect as shown in Figure 4.Two posts on display screen both sides are corresponding with the dynamic audio frequency sliding column that left and right sound channels two-way audio signal Processing is come out respectively, the intensity that can observe left and right sound channels two-way audio signal intuitively.
As shown in Figure 3, the monitor of band audio surveillance function also comprises audio frequency table numerical module, can on display screen, demonstrate supervision effect as shown in Figure 5, the numerical value of dB is marked on by the corresponding rectangle frame intensity that can observe left and right sound channels two-way audio signal more intuitively.
Data sampling module of the present utility model can be a standalone module, also can be by two speed 1 microseconds on original microprocessor in the monitor, and the above port of precision 8bit is realized.Utilize these two ports respectively left and right acoustic channels two-way analogue audio frequency voltage to be carried out real-time synchronized sampling.Microprocessor is handled sampled result, draws the sample mean AdcValue in the certain hour, the corresponding mean value of interior audio voltage during this period of time.Described sampled result being handled, be meant in 0.775V, is one grade sample mean with 0.013V, and AdcValue value as shown in table 1 is respectively 0.013,0.026,0.039 When surpassing 0.775V, because therefore overproof maximal value 0dBm gets a mean value for many grades.(in fact, nonsensical) above 0.775V
Measurement by to standard signal has formula
Mean value AdcValue substitution formula audio voltage just can obtain the DbValue value.Become corresponding dB value with the DbValue value is corresponding, the length of related dynamic audio frequency sliding column then can be embedded in the video and shows.
In data processing module, set up a ROM store character type array dB, as shown in table 1.
The audio surveillance function is to call the monitor system menu to realize, is the part of menu.As shown in Figure 5, be divided into left and right acoustic channels, scale all is-36 to+12, totally 50 grades (certainly, also can adopt other level to monitor) as 40 grades, because the needs that show, dB value and DbValue are also incomplete same, as shown in table 1.The relation of dB value and DbValue, table 1 is an example.
For example:
Example 1: when the data sampling value is 0.015V, think that through data processing mean value AdcValue is 0.013, drawing the DbValue value according to formula is-35.51, and corresponding decibel dB is shown as-36; That is to say that actual displayed will be-36dB;
Example 2: when the data sampling value is 0.078V, think that through data processing mean value AdcValue is 0.078, drawing the DbValue value according to formula is-19.94, and corresponding decibel dB is shown as-23;
Example 3: when the data sampling value is 0.168V, think that through data processing mean value AdcValue is 0.169, drawing the DbValue value according to formula is-13.23, and corresponding decibel dB is shown as-15.
Sampling of table 1 audio level and audio frequency amount corresponding tables
| AdcValue | DbValue | Decibel dB | AdcValue | DbValue | Decibel dB | AdcValue | DbValue | Decibel dB |
| 0.013 | -35.51 | -36 | 0.338 | -7.208 | -8 | 0.663 | -1.356 | -1 |
| 0.026 | -29.49 | -34 | 0.351 | -6.88 | -7 | 0.676 | -1.187 | -1 |
| 0.039 | -25.96 | -32 | 0.364 | -6.564 | -7 | 0.689 | -1.022 | -1 |
| 0.052 | -23.47 | -28 | 0.377 | -6.259 | -7 | 0.702 | -0.859 | 0 |
| 0.065 | -21.53 | -26 | 0.39 | -5.965 | -6 | 0.715 | -0.7 | 0 |
| 0.078 | -19.94 | -23 | 0.403 | -5.68 | -6 | 0.728 | -0.543 | 0 |
| 0.091 | -18.61 | -21 | 0.416 | -5.404 | -6 | 0.741 | -0.39 | 0 |
| 0.104 | -17.45 | -20 | 0.429 | -5.137 | -5 | 0.754 | -0.239 | 0 |
| 0.117 | -16.42 | -19 | 0.442 | -4.878 | -5 | 0.767 | -0.09 | 0 |
| 0.13 | -15.51 | -18 | 0.455 | -4.626 | -5 | 0.78 | 0.0559 | 0 |
| 0.143 | -14.68 | -17 | 0.468 | -4.381 | -5 | 0.871 | 1.0143 | 1 |
| 0.156 | -13.92 | -16 | 0.481 | -4.143 | -4 | 0.988 | 2.1091 | 2 |
| 0.169 | -13.23 | -15 | 0.494 | -3.911 | -4 | 1.105 | 3.0812 | 3 |
| 0.182 | -12.58 | -14 | 0.507 | -3.686 | -4 | 1.235 | 4.0473 | 4 |
| 0.195 | -11.99 | -13 | 0.52 | -3.466 | -4 | 1.391 | 5.0805 | 5 |
| 0.208 | -11.42 | -13 | 0.533 | -3.251 | -3 | 1.547 | 6.0038 | 6 |
| 0.221 | -10.9 | -12 | 0.546 | -3.042 | -3 | 1.742 | 7.0349 | 7 |
| 0.234 | -10.4 | -12 | 0.559 | -2.838 | -3 | 1.95 | 8.0147 | 8 |
| 0.247 | -9.932 | -11 | 0.572 | -2.638 | -3 | 2.197 | 9.0506 | 9 |
| 0.26 | -9.487 | -11 | 0.585 | -2.443 | -2 | 2.457 | 10.022 | 10 |
| 0.273 | -9.063 | -10 | 0.598 | -2.252 | -2 | 2.756 | 11.02 | 11 |
| 0.286 | -8.659 | -10 | 0.611 | -2.065 | -2 | 2.834 | 11.262 | 12 |
| 0.299 | -8.273 | -9 | 0.624 | -1.882 | -2 | |||
| 0.312 | -7.903 | -9 | 0.637 | -1.703 | -1 | |||
| 0.325 | -7.548 | -8 | 0.65 | -1.528 | -1 |
The corresponding dB value of the length of dynamic audio frequency sliding column is traditionally arranged to be green.When the dB value changed, the length of dynamic audio frequency sliding column refreshed in real time.Dynamic audio frequency sliding column is superimposed upon on the audio frequency table (as the post on Fig. 4 or Fig. 5 both sides), when dynamic audio frequency sliding column in the audio frequency table during lifting, the grid of its peak correspondence is the decibel value of corresponding audio frequency.
Dynamic audio frequency sliding column module can be superimposed upon on the audio frequency table in advance, forms the dynamic audio frequency table, is embedded into then in the monitor video, when monitor video shows, together shows.
Supervision effect of the present utility model is illustrated in figure 5 as: the audio frequency table of band numerical value is presented at the right and left of display screen, and along with the variation of audio frequency amount, the rectangle frame of expression decibel size shows green (being dynamic audio frequency sliding column) on its audio frequency table.Thereby on monitor, monitor the situation of audio frequency.
Claims (4)
1, a kind of monitor with the audio surveillance function comprises display screen, it is characterized in that also comprising
---data sampling module is used for the voltage of sound signal is sampled;
---data processing module is used for the audio voltage after the sampling is converted to the dB value;
---dynamic audio frequency sliding column module is used for producing the dynamic audio frequency sliding column of respective length and being sent to driver module according to above-mentioned dB value;
---driver module is used for dynamic audio frequency sliding column is superimposed upon original video signal, thereby shows dynamic audio frequency sliding column in real time on display screen.
2, monitor according to claim 1 is characterized in that also comprising
Audio frequency table module is used to produce a series of rectangle frame, and rectangle frame is combined into one or two posts, is superimposed upon on the original video signal by driver module.
3, monitor according to claim 2 is characterized in that also comprising
Audio frequency table numerical module is used to produce a series of numerical value corresponding to audio frequency table module, is superimposed upon on the original video signal by driver module.
4, according to each described monitor of claim 1 to 3, it is characterized in that: data sampling module comprises two passages, respectively to the real-time synchronized sampling of left and right sound channels two-way audio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200568739U CN201413623Y (en) | 2009-05-19 | 2009-05-19 | Monitor with function of audio monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200568739U CN201413623Y (en) | 2009-05-19 | 2009-05-19 | Monitor with function of audio monitor |
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|---|---|
| CN201413623Y true CN201413623Y (en) | 2010-02-24 |
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| CN2009200568739U Expired - Fee Related CN201413623Y (en) | 2009-05-19 | 2009-05-19 | Monitor with function of audio monitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763895A (en) * | 2016-04-15 | 2016-07-13 | 无锡天脉聚源传媒科技有限公司 | Sound processing method, device and system for multi-channel monitoring interface |
| CN106060659A (en) * | 2016-05-30 | 2016-10-26 | 广州华多网络科技有限公司 | Audio signal monitoring method, device and system |
| CN109697047A (en) * | 2017-10-23 | 2019-04-30 | 北京淳中科技股份有限公司 | Audio signal monitors method, apparatus, system, array display unit and split screen system |
| CN115883903A (en) * | 2023-02-22 | 2023-03-31 | 北京小鸟科技股份有限公司 | FPGA-based video real-time volume column display system, method and equipment |
-
2009
- 2009-05-19 CN CN2009200568739U patent/CN201413623Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763895A (en) * | 2016-04-15 | 2016-07-13 | 无锡天脉聚源传媒科技有限公司 | Sound processing method, device and system for multi-channel monitoring interface |
| CN106060659A (en) * | 2016-05-30 | 2016-10-26 | 广州华多网络科技有限公司 | Audio signal monitoring method, device and system |
| CN109697047A (en) * | 2017-10-23 | 2019-04-30 | 北京淳中科技股份有限公司 | Audio signal monitors method, apparatus, system, array display unit and split screen system |
| CN109697047B (en) * | 2017-10-23 | 2022-08-26 | 北京淳中科技股份有限公司 | Audio signal monitoring method, device and system, array imager and split screen system |
| CN115883903A (en) * | 2023-02-22 | 2023-03-31 | 北京小鸟科技股份有限公司 | FPGA-based video real-time volume column display system, method and equipment |
| CN115883903B (en) * | 2023-02-22 | 2023-05-16 | 北京小鸟科技股份有限公司 | FPGA-based video real-time volume column display system, method and equipment |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20130519 |