CN218849085U - Multifunctional sound console USB flash disk playing system - Google Patents
Multifunctional sound console USB flash disk playing system Download PDFInfo
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- CN218849085U CN218849085U CN202222104051.1U CN202222104051U CN218849085U CN 218849085 U CN218849085 U CN 218849085U CN 202222104051 U CN202222104051 U CN 202222104051U CN 218849085 U CN218849085 U CN 218849085U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model discloses a multi-functional sound console USB flash disk play system, including USB audio frequency processing chip, leading wave filter, USB audio signal switching module, analog-to-digital converter, digital signal processor, digital analog converter that connect gradually to and analog filter, wherein, USB audio frequency processing chip input is used for being connected with the USB flash disk, and analog filter's output is connected with the input of speaker. The utility model has the advantages that: digital signals stored in the USB flash disk are sequentially input into the USB audio processing chip, the pre-filter, the USB audio signal switching module, the analog-to-digital converter, the digital signal processor, the digital-to-analog converter and the analog filter, are converted into mp3 analog signals through data processing and then are played through the loudspeaker, and the system only uses the USB flash disk as intermediate equipment and is high in reliability.
Description
Technical Field
The utility model relates to a digital sound console technical field especially relates to a multi-functional sound console USB flash disk play system.
Background
Digital mixing consoles are a frequently used device in public address systems and audio-visual recordings, with multiple inputs, each path of sound signal being processed separately. The existing digital sound console can only be connected with a PC end through a network cable and a router, so that mp3 format files input by the PC end can be played, and if any one of the network cable, the router or the PC fails, mp3 playing cannot be completed.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a multi-functional sound console USB flash disk play system mainly solves current digital sound console and carries out the input and the play of mp3 format file through a plurality of intermediate apparatus, leads to the problem that system reliability is low.
In order to solve the technical problem, the technical scheme of the utility model as follows:
the utility model provides a multi-functional sound console USB flash disk play system, includes USB audio frequency processing chip, prefilter, USB audio signal switching module, analog-to-digital converter, digital signal processor, digital-to-analog converter that connect gradually to and analog filter, wherein, USB audio frequency processing chip's input is used for being connected with the USB flash disk, analog filter's output is connected with the input of speaker.
In some embodiments, the USB audio processing chip is a BU94702USB audio decoder, the forty-first pin and the forty-second pin of the BU94702USB audio decoder respectively output a USB data negative signal and a USB data positive signal to the negative signal receiving terminal and the positive signal receiving terminal of the USB disk, and the fifty-fifth pin and the fifty-third pin of the BU94702USB audio decoder are respectively connected to an input terminal of an independent pre-filter.
In some embodiments, each of the prefilters includes three operational amplifiers, and the mono signal output by the BU94702USB audio decoder is connected to the non-inverting input of a first operational amplifier, and the output of the first operational amplifier is connected to the non-inverting inputs of a second operational amplifier and a third operational amplifier, and the second operational amplifier and the third operational amplifier respectively output the hot signal and the cold signal of the mono signal.
In some embodiments, the USB audio signal switching module is an NJU201AM switch, the number of the NJU201AM switches is two, the hot signal and the cold signal of the mono signal are respectively connected to a fourteenth pin and a tenth pin of the NJU201AM switch, and a fifteenth pin and an eleventh pin of the NJU201AM switch are respectively connected to the input terminal of the analog-to-digital converter.
In some embodiments, the analog-to-digital converter is a PCM1840 converter, the sixth pin and the seventh pin of the PCM1840 converter are respectively connected with the fifteenth pin and the eleventh pin of one of the NJU201AM switches, the eighth pin and the ninth pin of the PCM1840 converter are respectively connected with the fifteenth pin and the eleventh pin of the other of the NJU201AM switches, and the twenty-first pin of the PCM1840 converter outputs a left-right channel combined digital signal.
In some embodiments, the digital signal processor is an ADSP-21489KsWz-5B processor, the eighty-eight pin of the ADSP-21489KsWz-5B processor is connected to the twenty-first pin of the PCM1840 converter, and the forty-ninth pin of the ADSP-21489KsWz-5B processor outputs a DSP signal.
In some embodiments, the digital-to-analog converter is a PCM1690 converter, an eighth pin of the PCM1690 converter is connected to a forty-ninth pin of the ADSP-21489KsWz-5B processor, forty-third and forty-fourth pins of the PCM1690 converter output the divided left-channel positive analog signal and left-channel negative analog signal, and forty-first and forty-second pins of the PCM1690 converter output the divided right-channel positive analog signal and right-channel negative analog signal.
In some embodiments, the analog filters have two positive and negative inputs respectively connected to the forty-third pin and the forty-fourth pin of the PCM1690 converter, the other one of the positive and negative inputs respectively connected to the forty-first pin and the forty-second pin of the PCM1690 converter, and the outputs of the two analog filters respectively connected to inputs of a separate speaker.
The utility model has the advantages that: the system comprises a USB audio processing chip, a pre-filter, a USB audio signal switching module, an analog-to-digital converter, a digital signal processor, a digital-to-analog converter and an analog filter, wherein the USB audio processing chip can be connected with a USB flash disk through a tail plug, digital signals stored in the USB flash disk are sequentially input into the USB audio processing chip, the pre-filter, the USB audio signal switching module, the analog-to-digital converter, the digital signal processor, the digital-to-analog converter and the analog filter, and are played through a loudspeaker after being converted into mp3 analog signals through data processing, and the system only uses the USB flash disk as intermediate equipment and is high in reliability.
Drawings
Fig. 1 is a schematic structural diagram of a multifunctional sound console usb disk playing system disclosed in an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a USB audio processing chip disclosed in an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a pre-filter according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a USB audio signal switching module according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an analog-to-digital converter according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a digital signal processor according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a digital-to-analog converter according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of an analog filter according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the following will explain the contents of the present invention in detail with reference to the accompanying drawings and the detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
As shown in fig. 1, the present embodiment proposes a multifunctional sound console USB disk playing system, which includes a USB audio processing chip 1, a pre-filter 2, a USB audio signal switching module 3, an analog-to-digital converter 4, a digital signal processor 5, a digital-to-analog converter 6, and an analog filter 7, where the USB audio processing chip 1 can be connected to a USB disk through a tail plug, and a digital signal stored in the USB disk is sequentially input into the USB audio processing chip 1, the pre-filter 2, the USB audio signal switching module 3, the analog-to-digital converter 4, the digital signal processor 5, the digital-to-analog converter 6, and the analog filter 7, and is played through a speaker after being converted into an mp3 analog signal through data processing, and the system only uses a USB disk as an intermediate device, and has high reliability.
The system comprises a USB audio processing chip 1, a pre-filter 2, a USB audio signal switching module 3, an analog-to-digital converter 4, a digital signal processor 5, a digital-to-analog converter 6 and an analog filter 7 which are sequentially connected, wherein the input end of the USB audio processing chip 1 is used for being connected with a USB flash disk, and the output end of the analog filter 7 is connected with the input end of a loudspeaker.
As shown in fig. 2, the USB audio processing chip 1 is a BU94702USB audio decoder, the forty-first pin and the forty-second pin of the BU94702USB audio decoder respectively output a USB data negative signal and a USB data positive signal to the negative signal receiving terminal and the positive signal receiving terminal of the USB disk, and the fifty-fifth pin and the fifty-third pin of the BU94702USB audio decoder are respectively connected to the input terminal of an independent pre-filter 2.
As shown in fig. 3, each pre-filter 2 includes three operational amplifiers, the mono signal output by the BU94702USB audio decoder is connected to the non-inverting input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to the non-inverting input terminals of the second operational amplifier and the third operational amplifier, and the second operational amplifier and the third operational amplifier respectively output the hot signal and the cold signal of the mono signal. The three operational amplifiers adopt NJM4580M two-way amplifiers.
As shown in fig. 4, the USB audio signal switching module 3 is an NJU201AM switch, the number of the NJU201AM switches is two, the hot signal and the cold signal of the monaural signal are respectively connected to the fourteenth pin and the tenth pin of the NJU201AM switch, and the fifteenth pin and the eleventh pin of the NJU201AM switch are respectively connected to the input terminal of the analog-to-digital converter 4.
As shown in fig. 5, the analog-to-digital converter 4 is a PCM1840 converter, the sixth pin and the seventh pin of the PCM1840 converter are respectively connected with the fifteenth pin and the eleventh pin of one of the NJU201AM switches, the eighth pin and the ninth pin of the PCM1840 converter are respectively connected with the fifteenth pin and the eleventh pin of the other NJU201AM switch, and the twenty-first pin of the PCM1840 converter outputs a digital signal after left and right channel combination.
As shown in FIG. 6, the DSP 5 is an ADSP-21489KsWz-5B processor, the eighty-eighth pin of the ADSP-21489KsWz-5B processor is connected to the twenty-first pin of the PCM1840 converter, and the forty-ninth pin of the ADSP-21489KsWz-5B processor outputs the DSP signal.
As shown in fig. 7, the digital-to-analog converter 6 is a PCM1690 converter, the eighth pin of the PCM1690 converter is connected to the forty-ninth pin of the ADSP-21489KsWz-5B processor, the forty-third pin and the forty-fourth pin of the PCM1690 converter output the divided left channel positive analog signal and left channel negative analog signal, and the forty-first pin and the forty-second pin of the PCM1690 converter output the divided right channel positive analog signal and right channel negative analog signal.
As shown in fig. 8, the analog filters 7 have two positive and negative inputs of one analog filter 7 respectively connected to the forty-third pin and the forty-fourth pin of the PCM1690 converter, the other analog filter 7 has positive and negative inputs respectively connected to the forty-first pin and the forty-second pin of the PCM1690 converter, and the outputs of the two analog filters 7 are respectively connected to the inputs of a separate speaker.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. The utility model provides a multi-functional sound console USB flash disk play system which characterized in that, includes USB audio frequency processing chip, prefilter, USB audio signal switching module, analog-to-digital converter, digital signal processor, digital-to-analog converter that connect gradually to and analog filter, wherein, USB audio frequency processing chip's input is used for being connected with the USB flash disk, analog filter's output is connected with the input of speaker.
2. The multifunctional sound console USB flash disk playing system according to claim 1, wherein the USB audio processing chip is a BU94702USB audio decoder, the forty-first pin and the forty-second pin of the BU94702USB audio decoder respectively output a USB data negative signal and a USB data positive signal to the negative signal receiving terminal and the positive signal receiving terminal of the USB flash disk, and the fifty-fifth pin and the fifty-third pin of the BU94702USB audio decoder are respectively connected to the input terminal of a separate pre-filter.
3. The USB flash disk playing system of claim 2, wherein each of the pre-filters comprises three operational amplifiers, the BU94702USB audio decoder outputs a single-channel signal to a non-inverting input terminal of a first operational amplifier, an output terminal of the first operational amplifier is simultaneously connected to non-inverting input terminals of a second operational amplifier and a third operational amplifier, and the second operational amplifier and the third operational amplifier respectively output a hot signal and a cold signal of the single-channel signal.
4. The multifunctional sound console USB flash disk playing system according to claim 3, wherein the USB audio signal switching module is an NJU201AM switch, the number of the NJU201AM switches is two, the hot signal and the cold signal of the mono audio signal are respectively connected to the fourteenth pin and the tenth pin of the NJU201AM switch, and the fifteenth pin and the eleventh pin of the NJU201AM switch are respectively connected to the input terminal of the analog-to-digital converter.
5. The multifunctional console USB flash disk playing system of claim 4, wherein the analog-to-digital converter is a PCM1840 converter, the sixth pin and the seventh pin of the PCM1840 converter are respectively connected with the fifteenth pin and the eleventh pin of one of the NJU201AM switches, the eighth pin and the ninth pin of the PCM1840 converter are respectively connected with the fifteenth pin and the eleventh pin of the other NJU201AM switch, and the twenty-first pin of the PCM1840 converter outputs a left-right channel combined digital signal.
6. The multi-function mixing console USB flash disk playing system according to claim 5, wherein the digital signal processor is an ADSP-21489KsWz-5B processor, the eighty-eight pin of the ADSP-21489KsWz-5B processor is connected to the twenty-first pin of the PCM1840 converter, and the forty-ninth pin of the ADSP-21489KsWz-5B processor outputs a DSP signal.
7. The multi-function sound console U-disk playback system of claim 6, wherein the digital-to-analog converter is a PCM1690 converter, the eighth pin of the PCM1690 converter is connected to the forty-ninth pin of the ADSP-21489KsWz-5B processor, the forty-third and forty-fourth pins of the PCM1690 converter output the divided left channel positive analog signal and left channel negative analog signal, and the forty-first and forty-second pins of the PCM1690 converter output the divided right channel positive analog signal and right channel negative analog signal.
8. The multi-function mixing console USB flash disk playing system as claimed in claim 7, wherein said analog filters have two inputs, one of said analog filters has a positive input connected to the forty-third pin and the forty-fourth pin of said PCM1690 converter, the other of said analog filters has a positive input connected to the forty-first pin and the forty-second pin of said PCM1690 converter, and the outputs of said two analog filters are connected to the inputs of a separate speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222104051.1U CN218849085U (en) | 2022-08-10 | 2022-08-10 | Multifunctional sound console USB flash disk playing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222104051.1U CN218849085U (en) | 2022-08-10 | 2022-08-10 | Multifunctional sound console USB flash disk playing system |
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| Publication Number | Publication Date |
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| CN218849085U true CN218849085U (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222104051.1U Active CN218849085U (en) | 2022-08-10 | 2022-08-10 | Multifunctional sound console USB flash disk playing system |
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| Country | Link |
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| CN (1) | CN218849085U (en) |
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2022
- 2022-08-10 CN CN202222104051.1U patent/CN218849085U/en active Active
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