CN209804261U - Karaoke entertainment system based on double-chip processing - Google Patents
Karaoke entertainment system based on double-chip processing Download PDFInfo
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- CN209804261U CN209804261U CN201920294281.4U CN201920294281U CN209804261U CN 209804261 U CN209804261 U CN 209804261U CN 201920294281 U CN201920294281 U CN 201920294281U CN 209804261 U CN209804261 U CN 209804261U
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Abstract
The utility model provides a karaoke entertainment system based on double-chip processing, including the first chip that can be used to gather multiple audio digital signal and the second chip that is used for gathering audio analog signal, the second chip still can be used to gather the audio digital signal of SPDIF input, including being used for decoding the decoding module that the audio digital signal of input carries out the decoding and/or be used for to the coding module that the audio digital signal carries out the code in the first chip; the second chip comprises an ADC, a DAC and an audio effector, wherein the audio digital signals are input into the second chip after being decoded or coded, and the audio effector processes the microphone signals, the musical instrument signals and the music signals which are converted into the digital signals according to the selection of a user and the audio digital signals transmitted from the second chip, and then converts the digital signals into analog signals through the DAC to be input into the audio amplification circuit. The utility model discloses circuit structure is simple, and the sound reduction high quality.
Description
Technical Field
The utility model relates to a audio amplifier technical field, concretely relates to karaoke entertainment system based on double-chip handles.
Background
In order to realize multiple functions, such as chorus, musical instrument performance, and performance of a small article, an audio signal processing system of an existing smart sound box, which can also be said to be a karaoke entertainment system, often needs to input multiple audio signals, such as a microphone signal, a musical instrument performance signal, a background signal, and the like, at the same time, perform corresponding processing, perform effect processing according to user selection, and finally play through a loudspeaker, so as to realize a karaoke entertainment function. Therefore, the conventional audio signal processing system is generally provided with a TF card input module, a usb disk input module, a wireless input module (such as bluetooth input), a microphone input signal module, a musical instrument signal input module, and the like, so as to satisfy various forms of audio input; from the audio signals input by the input modules, the existing audio signal processing system needs to perform effect processing after performing digital/analog and analog/digital conversion on the audio signals respectively, and in the processing process, because more chips are involved, especially in the effect processing process, effect processing such as echo, reverberation, chorus, phase shift and the like, corresponding chips need to be additionally added for effect processing, and an MCU (micro control unit) needs to be introduced for control, the circuit structure of the existing audio signal processing system is more complex and the cost is higher; moreover, since all input audio signals need to undergo digital/analog and analog/digital conversion, signal loss is severe, and thus sound reproduction quality is low.
SUMMERY OF THE UTILITY MODEL
The utility model is not enough to prior art, the utility model provides a karaoke entertainment system based on double-chip is handled, through first chip, the second chip manages the audio signal who gathers respectively, first chip is used for gathering and handles multiple audio digital signal promptly, the second chip is used for gathering and handles the microphone signal that the user needs to amplify, musical instrument signal, music signal etc., finally carry out effect processing and export audio amplifier through the speaker broadcast to these signals through the second chip, both avoided needing to carry out number/mould to multiple audio digital signal among the current audio signal processing system, the conversion of mould/number, lead to the loss of signal, circuit structure has also been simplified, and cost is reduced.
The technical scheme of the utility model is realized like this: a karaoke entertainment system based on dual-chip processing comprises a first chip and a second chip, wherein the first chip can be used for collecting various audio digital signals, the second chip is used for collecting audio analog signals including microphone signals, musical instrument signals and music signals, which need to be amplified by a user, the second chip can also be used for collecting audio digital signals input by an SPDIF (sinusoidal digital data interchange) and the first chip comprises a decoding module and/or an encoding module, which are/is used for decoding the input audio digital signals; the second chip comprises an ADC (analog-to-digital converter) for converting an audio analog signal into a digital signal, a DAC (digital-to-analog converter) for converting the digital signal into the analog signal and an audio effector, wherein the audio digital signal is input into the second chip after being decoded or encoded, the audio effector processes a microphone signal, a musical instrument signal and a music signal which are converted into the digital signal according to the selection of a user and an audio digital signal transmitted from the second chip, and then converts the signals into the analog signal through the DAC to be input into an audio amplifying circuit, and the signal amplified by the audio amplifying circuit is played through a loudspeaker.
Optionally, the plurality of audio digital signals are input to the first chip by a TF card input, a usb disk input, and a wireless signal input (e.g., a bluetooth signal input).
Optionally, the audio effector includes a frange effector, a chorus effector, a phase shift effector, a reverberation effector, an echo effector, and a waja effect effector.
Optionally, the second chip further includes a dynamic equivalent module, an equalization module, and a high-gain driving module.
Optionally, after the musical instrument signal is subjected to impedance matching by the first buffer, one path of signal is transmitted to the ADC of the second chip and converted into a digital signal; and the other path of signal is input into a filter for screening a signal frequency band, and the signal processed by the filter is input into a second chip after being processed by an amplitude limiter.
optionally, the microphone signal is transmitted to the ADC of the second chip after being impedance-matched by the second buffer and converted into a digital signal, and the music signal is transmitted to the ADC of the second chip after being impedance-matched by the third buffer and converted into a digital signal.
Optionally, the second chip further includes an expansion module, where the expansion module expands a user interaction display function, and the user interaction display function includes LED display and LCD display.
Optionally, the first chip is ATS2819 or CW6693G, and the second chip is AP8248, AP8264, or HC 6216.
Optionally, the first chip is provided with a mobile device control module, and is configured to receive a signal sent by the mobile device APP to control the audio signal processing system.
Compared with the prior art, the utility model has the advantages of it is following: the utility model discloses a multiple audio digital signal of first chip collection is handled, gather the audio frequency analog signal that the user including microphone signal, musical instrument signal, music signal needs to enlarge and convert it into digital signal through the second chip, audio frequency effect ware in the second chip carries out the effect processing according to the audio frequency digital signal after user's selection is handled with the first chip again and the audio frequency signal that converts digital signal into through the second chip, it is visible to use through the cooperation of first chip and second chip and has greatly simplified the circuit structure of audio signal processing system; and because excessive chips and MCU control are not required to be introduced, the cost is reduced.
Additionally, the utility model discloses in the audio digital signal who gathers, only need decode or encode through first chip and handle, and need not like current audio signal processing system to carry out the conversion of digital/analog, analog/digital, avoided the loss of signal, make the sound restore high quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a system structure of an embodiment of the Kara OK entertainment system based on dual-chip processing of the present invention;
FIG. 2 is a circuit diagram of a first chip in an embodiment of the karaoke entertainment system based on dual-chip processing according to the present invention;
FIG. 3 is a circuit diagram of a second chip in an embodiment of the present invention of a dual-chip processing based karaoke entertainment system;
Fig. 4 is a circuit diagram of the partial input and output terminals in the karaoke entertainment system based on the dual-chip processing of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 4, the karaoke entertainment system based on dual-chip processing disclosed in the embodiments of the present invention comprises a first chip for collecting various audio digital signals and a second chip for collecting audio analog signals including microphone signals, musical instrument signals, and music signals, which are required to be amplified by a user, wherein the second chip can also be used for collecting audio digital signals input by SPDIF, the first chip comprises a decoding module for decoding the audio digital signals input to the first chip and/or an encoding module for encoding the audio digital signals; the second chip is internally provided with an ADC for converting audio analog signals into digital signals, a DAC for converting the digital signals into the analog signals and an audio effector, the audio digital signals are input into the second chip after decoding or encoding, the audio effector processes microphone signals, musical instrument signals and music signals which are converted into the digital signals according to user selection and audio digital signals transmitted from the second chip, and then the signals are converted into the analog signals through the DAC to be input into an audio amplifying circuit, and the signals amplified by the audio amplifying circuit are played through a loudspeaker. The audio digital signal input by the SPDIF to the second chip includes a coaxial input and an optical fiber input, and the music signal here refers to a signal input through another line. Specifically, the first chip is ATS2819 or CW6693G, and the second chip is AP8248, AP8264 or HC 6216. The input circuit of various signals can be seen in fig. 4.
The modes of inputting the various audio digital signals to the first chip comprise TF card input, U disk input and wireless signal input. The audio digital signal of input includes MP3, WMA, bluetooth wireless signal input etc. makes the utility model discloses the accessible inserts TF card input or inserts USB flash disk input or bluetooth wireless input audio digital signal, satisfies the user's demand.
specifically, the audio effector includes a frange effector, a chorus effector, a phase shift effector, a reverberation effector, an echo effector, and a waja effect effector. The second chip can carry out corresponding effect processing to the microphone signal, the music signal, the musical instrument signal received and the audio digital signal input in the first chip according to user's selection, and frange effect ware, chorus effect ware, phase shift effect ware, reverberation effect ware, echo effect ware and waying sound effect ware etc. all place in the second chip in addition, belong to the function extension of second chip promptly, need not increase the chip, have greatly simplified circuit structure.
Further, the second chip further comprises a dynamic equivalent module, an equalization module and a high-gain driving module. The dynamic equivalent module can be used for setting low frequency, high frequency and the like, and the balancing module is used for balancing the audio digital signal collected by the first chip and the audio analog signal collected by the second chip according to the user requirement; and the high gain driving module is also used for increasing or decreasing the sound according to the user requirement.
In the above embodiment, the microphone signal is impedance-matched by the second buffer and then transmitted to the ADC of the second chip to be converted into a digital signal, and the music signal is impedance-matched by the third buffer and then transmitted to the ADC of the second chip to be converted into a digital signal, so as to reduce signal loss and more accurately restore the audio signal. After the musical instrument signals are subjected to impedance matching through the first buffer, one path of signals are transmitted to an ADC (analog to digital converter) of the second chip and converted into digital signals; and the other path of signal is input into a filter for screening a signal frequency band, and the signal processed by the filter is input into a second chip after being processed by a limiter, so that the signal loss is reduced, and the audio signal is restored more accurately. Because the audio digital signal of input need not carry out digital/analog, analog/digital conversion, and the audio frequency analog signal of input has carried out impedance matching again in order to reduce signal loss, thereby makes the utility model discloses a sound restores the high quality. Wherein the limiter may be a limiting diode.
Furthermore, the second chip further comprises an expansion module, the expansion module expands the user interaction display function, and the user interaction display function comprises LED display and LCD display, so that the human-computer interaction or the human-computer control and the like can be realized conveniently.
Further, first chip is equipped with mobile device control module for the signal that the receipt mobile device APP sent controls audio signal processing system, and it is right that the user of being convenient for passes through mobile device APP the utility model discloses control, like sound amplitude control, reverberation control, balanced control etc. do benefit to the user and adjust audio signal according to own demand.
The utility model discloses a multiple audio digital signal of first chip collection is handled, and the audio frequency analog signal that the user including microphone signal, musical instrument signal, music signal needs to be enlarged and changes it into digital signal through the second chip collection, and audio frequency effect ware in the last second chip carries out the effect according to the audio frequency digital signal after the user selection is handled with first chip and the audio signal that converts digital signal into through the second chip again and handles. The first chip and the second chip are matched for use, so that excessive chips are avoided, MCU is not required to be introduced for control, the circuit structure of the audio signal processing system is greatly simplified, and the cost is also reduced.
In addition, the audio digital signal collected in the utility model only needs to be decoded or coded by the first chip, and does not need to be converted into digital/analog and analog/digital like the existing audio signal processing system, thereby avoiding the loss of the signal; and the input audio analog signals (microphone signals, music signals and musical instrument signals) which need to be amplified by the user are subjected to impedance matching, so that the loss of the signals is reduced, and the sound reproduction quality is higher.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A karaoke entertainment system based on double-chip processing is characterized in that: the digital signal processing device comprises a first chip which can be used for collecting various audio digital signals and a second chip which is used for collecting audio analog signals including microphone signals, musical instrument signals and music signals and needing to be amplified by a user, wherein the second chip can also be used for collecting audio digital signals of SPDIF input, and a decoding module used for decoding the input audio digital signals and/or an encoding module used for encoding the audio digital signals are/is arranged in the first chip; the second chip comprises an ADC (analog-to-digital converter) for converting an audio analog signal into a digital signal, a DAC (digital-to-analog converter) for converting the digital signal into the analog signal and an audio effector, wherein the audio digital signal is input into the second chip after being decoded or encoded, the audio effector processes a microphone signal, a musical instrument signal and a music signal which are converted into the digital signal according to the selection of a user and an audio digital signal transmitted from the second chip, and then converts the signals into the analog signal through the DAC to be input into an audio amplifying circuit, and the signal amplified by the audio amplifying circuit is played through a loudspeaker.
2. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the various audio digital signals are input into the first chip in a mode comprising TF card input, U disk input and wireless signal input.
3. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the audio effect device comprises a Franco effect device, a chorus effect device, a phase shift effect device, a reverberation effect device, an echo effect device and a Wasabo effect device.
4. the karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the second chip further comprises a dynamic equivalent module, an equalization module and a high-gain driving module.
5. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: after the musical instrument signals are subjected to impedance matching through the first buffer, one path of signals are transmitted to an ADC (analog to digital converter) of the second chip and converted into digital signals; and the other path of signal is input into a filter for screening a signal frequency band, and the signal processed by the filter is input into a second chip after being processed by an amplitude limiter.
6. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the microphone signal is transmitted to the ADC of the second chip after being subjected to impedance matching through the second buffer and is converted into a digital signal, and the music signal is transmitted to the ADC of the second chip after being subjected to impedance matching through the third buffer and is converted into a digital signal.
7. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the second chip further comprises an expansion module, and the expansion module can be used for expanding the user interaction display function, wherein the user interaction display function comprises LED display and LCD display.
8. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the first chip is ATS2819 or CW6693G, and the second chip is AP8248, AP8264 or HC 6216.
9. The karaoke entertainment system based on dual chip processing as claimed in claim 1, wherein: the first chip is provided with a mobile device control module and used for receiving signals sent by the mobile device APP and controlling the audio signal processing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294281.4U CN209804261U (en) | 2019-03-08 | 2019-03-08 | Karaoke entertainment system based on double-chip processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294281.4U CN209804261U (en) | 2019-03-08 | 2019-03-08 | Karaoke entertainment system based on double-chip processing |
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| Publication Number | Publication Date |
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| CN209804261U true CN209804261U (en) | 2019-12-17 |
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| CN201920294281.4U Active CN209804261U (en) | 2019-03-08 | 2019-03-08 | Karaoke entertainment system based on double-chip processing |
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