CN201383321Y - Karaoke processing module based on double DSP - Google Patents
Karaoke processing module based on double DSP Download PDFInfo
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- CN201383321Y CN201383321Y CN200920301398U CN200920301398U CN201383321Y CN 201383321 Y CN201383321 Y CN 201383321Y CN 200920301398 U CN200920301398 U CN 200920301398U CN 200920301398 U CN200920301398 U CN 200920301398U CN 201383321 Y CN201383321 Y CN 201383321Y
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Abstract
The utility model relates to a karaoke processing module based on double digital signal processing (DSP), which comprises an analog/digital conversion circuit, audio-digital signal processing chips, a single chip microcomputer and digital/analog conversion circuits. The analog/digital conversion circuit is connected with the audio-digital signal processing chips, the audio-digital signal processing chips are connected with the digital/analog conversion circuits, the single chip microcomputer is also connected with the audio-digital signal processing chips, the number of the audio-digital signal processing chips is two, the two audio-digital signal processing chips are connected with each other, and each audio-digital signal processing chip is connected with one digital/analog conversion circuit, wherein either of the two audio-digital signal processing chips is connected with the single chip microcomputer, the audio-digital signal processing chips are provided with read-only memory units, and the read-only memory units are pre-stored with self-loading low-layer firmware. The karaoke processing module adopts the two DSP chips to complete the parallel signal processing, makes use of the common DSP chips to achieve the signal processing with high performance, and greatly increases the performance-to-price ratio of the karaoke program.
Description
Technical field
The utility model relates to the karaoke equipment technology, particularly a kind of pair of Karaoke processing module that DSP handles.
Background technology
Karaoke is meant and utilizes electronic technology, and the former voice in the music signal source is removed a kind of entertainment mode of accompanying for the singer in back (or directly adopting Karaoke accompaniment band).This entertainment way utilizes a cover stereo set to replace singing needed band, makes singing effect with respect to singing opera arias or simply accompanying and has obtained very big lifting.
Popularizing rapidly of Karaoke cultural and recreational activity caused the heavy demand of market to karaoke equipment, and the equipment of excellent can obtain more sales volume and profit, and therefore, this demand has promoted the dedicated devices or the design fast lifting of Karaoke.Wherein at housed device, a lot of chip manufacturers have released special-purpose Karaoke effect process chip (for example BA5096 and the M65831 of Japan's product), and Fig. 1 is exactly the theory diagram that utilizes the Karaoke effect process functional unit of this class chip composition.
But in commercial equipment (professional stereo set) field, the effect that these chips are handled still lacks perfection, and therefore, the Karaoke effect process function of specialty along with the DSP technology rapid development, is finished by a DSP usually.Fig. 2 is the common theory diagram of this class design.The action principle of Fig. 2 is: from microphone next people's acoustical signal and accompaniment stereophonic music signal, after the prime amplification or buffering through A1, A2, convert to by ADC again and send into DSP after the digital signal and carry out various effect process (the DSP device is under the control of single-chip microcomputer, can realize multi-functional Karaoke effect by how middle algorithm) to audio digital signals, digital signal after the processing converts simulating signal to through DAC, and the entire process process finishes.
Yet still there are following shortcoming in actual applications in Fig. 1 or treatment circuit shown in Figure 2:
(1) adopt a special-purpose Karaoke chip or a dsp chip, the function that can realize is still simple relatively, can not satisfy high-end commercial user's demand.
(2) expansion of platform shown in Figure 2 is strong inadequately; Because the limitation of circuit structure, the bottom firmware of software (claiming firmware again, i.e. Firmware) customization can't be very flexible.When industrialization, can not deacclimatize multiple customer demand with identical platform, the target of do not reach and simplify design, saving development resources.
(3) on cost, platform shown in Figure 2 is had relatively high expectations to DSP and AD/DA device, relatively device cost also high (present DSP and AD/DA chip kind are more, the having of senior middle school's low side, but the structures shape of Fig. 2 platform adopt the device of low side can not satisfy high-end Karaoke effect).
The utility model content
The shortcoming that the purpose of this utility model is to overcome prior art provides a kind of and utilizes common dsp chip to realize high performance signal Processing with not enough, and cost is low, the Karaoke processing module that two DSP that treatment effect is good handle.
The purpose of this utility model is achieved through the following technical solutions: a kind of pair of Karaoke processing module that DSP handles, comprise A/D conversion circuit, audio digital signals process chip (Audio DSP), single-chip microcomputer, D/A conversion circuit, described A/D conversion circuit is connected with the audio digital signals process chip, the audio digital signals process chip is connected with D/A conversion circuit, and single-chip microcomputer also is connected with the audio digital signals process chip; It is characterized in that: the quantity of described audio digital signals process chip is two, and two audio digital signals process chip interconnect, and every audio digital signals process chip is connected with a cover D/A conversion circuit respectively; Wherein a slice audio digital signals process chip is connected with single-chip microcomputer, and this audio digital signals process chip is provided with read-only memory (ROM), and described read-only memory internal memory contains the bottom firmware (Firmware) of bootstrap loading; Described bottom firmware (Firmware) is shared by two audio digital signals process chip institutes; This structure can be reloaded (Firmware Reload) to the bottom firmware easily, to realize different application functions.
A described cover D/A conversion circuit comprises the two D/A conversion circuits of two differential types; Cooperate after the software algorithm of the technical program, this programme can adopt two digital/analog converter spares of low side to realize high-end performance, and the platform cost is reduced.
Two audio digital signals process chip can adopt the chip of same model, also can adopt the chip of different model.
Described audio digital signals process chip can be selected for use but be not limited to IC:SAM3703, SAM3308, AD1940, DSPB56362, SAM3303, ADAU1701 or the like of following model.
The utility model has following advantage and effect with respect to prior art:
1, this programme has used two dsp chip parallel processing signals.This originality design makes that high performance Karaoke scheme does not need to re-use expensive dsp chip, has improved the cost performance of Karaoke implementation significantly.
2, this programme has adopted the mode of operation of the two D/A conversion circuits of differential type originally, has improved performance index of the present invention.Making simultaneously utilizes common dsp chip to realize that high performance signal Processing becomes a reality.
3, this programme (especially designs the Karaoke treatment effect equipment of having relatively high expectations at various application scenarios, the hardware platform versatility is very strong, the device range of choice is also widened (DSP and the AD/DA chip that can select high-, middle-and low-end for use) greatly, after hardware design finishes, can on this platform, realize very diversified application, satisfy all kinds of clients' demand, save the hardware development resource largely.
Description of drawings
Fig. 1 is the existing structural representation that adopts the common Karaoke processing module of Karaoke special integrated chip.
Fig. 2 is the structural representation that adopts the specialty Karaoke processing module of DSP.
Fig. 3 is the structural representation of the Karaoke processing module of the two DSP processing of the utility model.
Fig. 4 is the circuit diagram of the Karaoke processing module of shown in Figure 3 pair of DSP processing.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
Fig. 3～Fig. 4 shows concrete structure of the present utility model, by Fig. 3, Fig. 4 as seen, the Karaoke processing module of this pair of DSP processing is connected and composed by following device: a microphone and a music input (left side, R channel) amplification of totally three passages and buffering processing module A1, A2, A3, two CS4223 chip (CODEC chips of Cirrus Logitech, 2 totally 4 ADC and DAC, wherein 3 ADC of input, 4 DAC of difference output), DSP (the model ADAU1701 of a DSP of an Atmel company (model SAM3303) and an Adi company, built-in 2 road ADC and DAC, performance is general), the compatible single-chip microcomputer (MCU) of 89C5X series, and the differential buffer device of output.In addition, the LCD display that MCU can also control a 2*10 character shows, to ensure good man machine operation interface.
Wherein, after difference was made in the DAC of CS4223 output, overall performance improved 6dB, reaches the performance of top DAC.The built-in ADC of ADAU1701 because performance bad need not, only use its DAC, make the difference output form after, performance can reach high-end requirement.Wherein after 4 of CS4223 DAC difference, as the output DAC of music left and right acoustic channels, performance is high, and after built-in two the DAC difference of ADAU1701, as the center channels output based on voice, performance is also fairly good.
In addition, after two DSP (SAM3303 and ADAU1701) parallel processing data, the performance leap realizes that the processing of most Karaokes is more than sufficient.The ingenious structure of utilizing ADAU1701 of while, hang in the ROM storer of its control outside the bottom most software firmware (Firmware), cooperate the design of software, can realize at any time bottom most software firmware update or upgrading (can be undertaken by pc ports such as USB, RS232, RS485, communication modes is very flexible).
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (4)
1. Karaoke processing module that two DSP handle, comprise A/D conversion circuit, audio digital signals process chip, single-chip microcomputer, D/A conversion circuit, described A/D conversion circuit is connected with the audio digital signals process chip, the audio digital signals process chip is connected with D/A conversion circuit, and single-chip microcomputer also is connected with the audio digital signals process chip; It is characterized in that: the quantity of described audio digital signals process chip is two, and two audio digital signals process chip interconnect, and every audio digital signals process chip is connected with a cover D/A conversion circuit respectively; Wherein a slice audio digital signals process chip is connected with single-chip microcomputer, and this audio digital signals process chip is provided with read-only memory, and described read-only memory internal memory contains the bottom firmware of bootstrap loading.
2. the according to claim 1 pair of Karaoke processing module that DSP handles is characterized in that: a described cover D/A conversion circuit comprises the two D/A conversion circuits of two differential types.
3. the according to claim 1 pair of Karaoke processing module that DSP handles is characterized in that: two audio digital signals process chip adopt the chip of same model, or adopt the chip of different model.
4. the according to claim 1 pair of Karaoke processing module that DSP handles is characterized in that: IC:SAM3703, SAM3308, AD1940, DSPB56362, SAM3303, ADAU1701 that described audio digital signals process chip is following model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920301398U CN201383321Y (en) | 2009-03-19 | 2009-03-19 | Karaoke processing module based on double DSP |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920301398U CN201383321Y (en) | 2009-03-19 | 2009-03-19 | Karaoke processing module based on double DSP |
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| CN201383321Y true CN201383321Y (en) | 2010-01-13 |
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| CN200920301398U Expired - Fee Related CN201383321Y (en) | 2009-03-19 | 2009-03-19 | Karaoke processing module based on double DSP |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270696A (en) * | 2014-06-06 | 2015-01-07 | 深圳市实益达科技股份有限公司 | Broadcasting power-amplification sound system based on 4K Blu-ray player |
-
2009
- 2009-03-19 CN CN200920301398U patent/CN201383321Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270696A (en) * | 2014-06-06 | 2015-01-07 | 深圳市实益达科技股份有限公司 | Broadcasting power-amplification sound system based on 4K Blu-ray player |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHAOQING DINGLI AUDIO VISUAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUANGZHOU DIGISYNTHETIC CO., LTD. Effective date: 20101011 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510760 NO.3, FACTORY BUILDING, WUSHE INDUSTRY ZONE, CANGLIAN ROAD 2, LILIAN STREET, HUANGPU DISTRICT, GUANGZHOU CITY, GUANGDONG PROVINCE TO: 526118 TIANZI INDUSTRIAL PARK, MAAN, GAOYAO CITY, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20101011 Address after: 526118 Guangdong Gaoyao Maan talent Industrial Park Patentee after: Zhaoqing Dingli Audio and Video Technology Co., Ltd. Address before: 510760, Guangzhou, Guangdong Province, Whampoa District, Lai Lian street, two Lian Road, five clubs Industrial Zone, No. 3 workshop Patentee before: Guangzhou Digisynthetic Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG DIGISYNTHETIC CO., LTD. Free format text: FORMER NAME: ZHAOQING DIGISYNTHETIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 526118 Guangdong city of Zhaoqing Province Gaoyao Maan talent Industrial Park Patentee after: Guangdong Digisynthetic Co., Ltd. Address before: 526118 Guangdong Gaoyao Maan talent Industrial Park Patentee before: Zhaoqing Dingli Audio and Video Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20160319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |