CN201928400U - Digital active sounder with DSP (Digital Signal Processor) preprocessing function - Google Patents
Digital active sounder with DSP (Digital Signal Processor) preprocessing function Download PDFInfo
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- CN201928400U CN201928400U CN2010206818482U CN201020681848U CN201928400U CN 201928400 U CN201928400 U CN 201928400U CN 2010206818482 U CN2010206818482 U CN 2010206818482U CN 201020681848 U CN201020681848 U CN 201020681848U CN 201928400 U CN201928400 U CN 201928400U
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Abstract
The utility model discloses a digital active sounder with a DSP (Digital Signal Processor) preprocessing function, which comprises a DSP processing unit, wherein the DSP processing unit comprises an A/D (Analog-to-Digital) converting interface, an I/O (Input/Output) interface and a D/A (Digital-to-Analog) converting interface, the input end of the A/D converting interface is connected with an audio input unit, the input end of the I/O interface is connected with a function selecting switch, the output end of the D/A converting interface is connected with a power amplifying unit, the output end of the power amplifying unit is also connected with a horn unit, and the digital active sounder also comprises a power-supply unit for supplying a power supply for the digital active sounder. Through a function converting switch, a user can rapidly select a required sound-effect mode without complicated professional knowledge of audio debugging; and a switching power supply is adopted as the power supply of the digital active sounder, the DSP processing unit is used as a preprocessing level, and the whole device has a small volume and a light weight. The digital active sounder can be widely applied to various entertainment places or conference fields.
Description
Technical field
The utility model relates to a kind of audio processing equipment, particularly a kind of DSP digital sound.
Background technology
Along with the raising day by day of development of science and technology, living standard, people are also more and more high to the requirement of audio signals such as music, voice.Existing digital sound, the general amplifier that adopts of prime processing is handled, and can only carry out low-and high-frequency adjusting, EQ adjusting and amplitude limit and regulate, and its shortcoming is: volume is big, signal to noise ratio is little, self can not adapt to different demand occasions; If prime handles other special-purpose DSP modules (as ZL 200920053179.1) of utilization, because the peripheral cell that the circuit utilization is too much, as A/D conversion, D/A conversion, Single-chip Controlling etc., cause that volume is big, cost is high, power supply is complicated, parameter is provided with defectives such as difficulty height, be not suitable for not having the people of voice applications rudimentary knowledge to use.Existing active audio amplifier technology is used analog amplifier and analog power more, and analog amplifier efficient is low, and equipment volume is big and relatively heavier.
The utility model content
The technical problems to be solved in the utility model is: the digital active loundspeakers that a kind of volume is little, function is complete, simple to operate is provided.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is:
A kind of digital active loundspeakers with the DSP pre-treatment, comprise the DSP processing unit, described DSP processing unit comprises A/D translation interface, I/O interface, D/A translation interface, the input of described A/D translation interface is connected with the audio frequency input unit, the input of described I/O interface is connected with functional select switch, the output of described D/A translation interface is connected with power amplification unit, the output of described power amplification unit also is connected with loudspeaker unit, and described digital active loundspeakers also is included as the power subsystem that it provides power supply.
Be further used as preferred embodiment, described DSP processing unit also comprises communication interface, and described communication interface is connected with the PC control flow.
Be further used as preferred embodiment, described power subsystem is a Switching Power Supply.
Be further used as preferred embodiment, described power amplification unit is the D power-like amplifier.
The beneficial effects of the utility model are: the utility model has added the DSP processing unit in the pre-treatment level of power amplification, described DSP processing unit is integrated A/D, D/A conversion and multi-functional I/O interface, the input of described I/O interface is connected with functional select switch, pass through function switch, the user can select required audio pattern efficiently, does not need the professional knowledge of complicated audio frequency debugging; Power supply described in the utility model adopts Switching Power Supply, and the pre-treatment level is the DSP processing unit, and whole device volume is little, and is in light weight.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Fig. 1 is the theory diagram of the utility model numeral active loundspeakers.
Embodiment
With reference to Fig. 1, a kind of digital active loundspeakers with the DSP pre-treatment, comprise DSP processing unit 2, described DSP processing unit 2 comprises A/D translation interface 21, I/O interface 23, D/A translation interface 22, the input of described A/D translation interface 21 is connected with audio frequency input unit 1, the input of described I/O interface 23 is connected with functional select switch 7, the output of described D/A translation interface 22 is connected with power amplification unit 3, the output of described power amplification unit 3 also is connected with loudspeaker unit 4, and described digital active loundspeakers also is included as its power subsystem that power supply is provided 6.
Be further used as preferred embodiment, described DSP processing unit 2 also comprises communication interface 24, and described communication interface 24 is connected with PC control flow 5.The user can realize conventional control by PC control flow 5, comprise that the frequency division menu selects, and configuration information is stored in reads; System menu is selected; Password is set; Locking mode selection etc.
Be further used as preferred embodiment, described power subsystem 6 is a Switching Power Supply.It is 90V ~ 250V that the utility model adopts the supply voltage switch scope.
Be further used as preferred embodiment, described power amplification unit 3 is the D power-like amplifier.
Described audio frequency input unit 1 received audio signal amplifies, regulates volume, buffering output to audio signal, and pending audio signal is input to A/D translation interface 21.
Audio signal after 2 pairs of processes of DSP processing unit A/D conversion is handled, and comprises changing audio signal multiplication factor, adjustment EQ parametric compensation, high low-pass filtering, dynamic amplitude limit.
Described DSP processing unit 2 is binary channels input, the output of four road signals, but the relation combination in any between its input and output, but as input single channel or two-way, singly output of output, two-way, three tunnel, four tunnel outputs.
2 pairs of audio signals of the utility model DSP processing unit are achieved as follows input, output control:
Phase control, each input channel and output channel include independently phase control, Polarity=(+), positive; Polarity=(-), anti-phase.
Time-delay control, each passage all comprise independently time-delay control, and its input INPUT and output OUTPUT delay time adjustable range are in 0 ~ 2000ms (input+output＜=2000).
The balanced control of parameter, each input channel all can be provided with 15 sections equalizers for use, realizes the control of EQ1 ~ EQ15, regulates parameter area and is: on Freq:20Hz ~ 20KHz, optional frequency select when any one frequency of 20Hz ~ 20KHz, and be stepping with 1Hz; Band width Bandwidth-Q value can be set between 0.05 to 10, can 0.01 be stepping; Yield value: be arranged on-16dB ~+16dB between, and be stepping with 0.1dB.
Frequency division high pass (HPF, High pass)/low pass (LPF, Low pass) filtering, each passage comprises independently high pass/low pass filter, its filter scope is 20Hz ~ 20KHz, can be provided with arbitrarily, and optional Lin-Ril, Bessel, ButterW filter, can select slope to be: 12dB/Oct, 18dB/Oct, 24dB/Oct, and, can realize bandpass filtering, promptly when high pass and low pass are moved simultaneously, become bandpass filtering.
Limiter control is adopted in restriction control, threshold values :-20dB ~+20dB, start-up time: 0.3ms-100ms.
The low frequency extending controller: according to people's ear and audio amplifier characteristic low frequency is promoted, the lifting ratio is different under the situation of different volumes.
Digital signal after process DSP processing unit 2 is handled inputs to power amplification unit 3 after converting analog signal to by D/A conversion mouth 22, described power amplification unit 3 is the D power-like amplifier, power amplifier is analog signal conversion that digital signal is carried out the switch amplification through ∑-△ computing, the audio signal of amplifying signal after the low-pass filtering of inductance capacitance leaches switching signal partial reduction amplification, the high bass that respectively outputs to audio amplifier promotes loudspeaker unit 4 playing back music.
I/O interface 23 in the described DSP processing unit 2 is connected with functional select switch 7, by functional select switch 7, the user can call the audio pattern that needs (these patterns be professional collect the user use data to debug), can be issued to professional enjoyment standard in the situation that is not having sound equipment debugging basis.
DSP processing unit 2 also has the function of managing power amplifier operation, as not having input signal in 2 fixed times of DSP processing unit (as 5min), can close power amplifier; When audio signal is imported, but the power amplifier operate as normal can effectively reduce stand-by power consumption, prolongs the useful life of power amplifier.
More than be that preferable enforcement of the present utility model is specified, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of the utility model spirit, distortion that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (4)
1. digital active loundspeakers with the DSP pre-treatment, it is characterized in that: comprise DSP processing unit (2), described DSP processing unit (2) comprises A/D translation interface (21), I/O interface (23), D/A translation interface (22), the input of described A/D translation interface (21) is connected with audio frequency input unit (1), the input of described I/O interface (23) is connected with functional select switch (7), the output of described D/A translation interface (22) is connected with power amplification unit (3), the output of described power amplification unit (3) also is connected with loudspeaker unit (4), and described digital active loundspeakers also is included as its power subsystem that power supply is provided (6).
2. a kind of digital active loundspeakers according to claim 1 with the DSP pre-treatment, it is characterized in that: described DSP processing unit (2) also comprises communication interface (24), described communication interface (24) is connected with PC control flow (5).
3. a kind of digital active loundspeakers with the DSP pre-treatment according to claim 1 is characterized in that: described power subsystem (6) is a Switching Power Supply.
4. 1 described a kind of digital active loundspeakers with the DSP pre-treatment as requested, it is characterized in that: described power amplification unit (3) is the D power-like amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206818482U CN201928400U (en) | 2010-12-27 | 2010-12-27 | Digital active sounder with DSP (Digital Signal Processor) preprocessing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206818482U CN201928400U (en) | 2010-12-27 | 2010-12-27 | Digital active sounder with DSP (Digital Signal Processor) preprocessing function |
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| CN201928400U true CN201928400U (en) | 2011-08-10 |
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| CN2010206818482U Expired - Fee Related CN201928400U (en) | 2010-12-27 | 2010-12-27 | Digital active sounder with DSP (Digital Signal Processor) preprocessing function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916732A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Control method for active integrated loudspeaker box provided with multi-digital signal processor system |
| CN104113290A (en) * | 2013-04-22 | 2014-10-22 | 恩平市奥新电子科技有限公司 | Professional power amplifier with DSP (digital signal processor) digital speaker processor |
| CN104503297A (en) * | 2014-11-25 | 2015-04-08 | 宁波中荣声学科技有限公司 | DSP audio digital signal processing system and method |
| FR3043243A1 (en) * | 2015-11-02 | 2017-05-05 | Smarty Crew | METHOD FOR RETRIEVING AUDIO CONTENT BY CONNECTED DOUDOU |
-
2010
- 2010-12-27 CN CN2010206818482U patent/CN201928400U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916732A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Control method for active integrated loudspeaker box provided with multi-digital signal processor system |
| CN104113290A (en) * | 2013-04-22 | 2014-10-22 | 恩平市奥新电子科技有限公司 | Professional power amplifier with DSP (digital signal processor) digital speaker processor |
| CN104503297A (en) * | 2014-11-25 | 2015-04-08 | 宁波中荣声学科技有限公司 | DSP audio digital signal processing system and method |
| CN104503297B (en) * | 2014-11-25 | 2017-06-30 | 宁波中荣声学科技有限公司 | DSP audio digital signals processing system and method |
| FR3043243A1 (en) * | 2015-11-02 | 2017-05-05 | Smarty Crew | METHOD FOR RETRIEVING AUDIO CONTENT BY CONNECTED DOUDOU |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510820 Feida Industrial Park, charcoal Town, Huadu District, Guangdong, Guangzhou Patentee after: GUANGZHOU FEIDA SOUND CO., LTD. Address before: 510820 Feida Industrial Park, charcoal Town, Huadu District, Guangdong, Guangzhou Patentee before: Guangzhou Fidek Professional Audio Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |