CN111131967A - Intelligent audio sleep-aid instrument - Google Patents
Intelligent audio sleep-aid instrument Download PDFInfo
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- CN111131967A CN111131967A CN201911398266.5A CN201911398266A CN111131967A CN 111131967 A CN111131967 A CN 111131967A CN 201911398266 A CN201911398266 A CN 201911398266A CN 111131967 A CN111131967 A CN 111131967A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
- G11B2020/10555—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account
- G11B2020/10564—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account frequency
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Abstract
The embodiment of the invention discloses an intelligent audio sleep-assisting instrument, which comprises a plurality of auxiliary audio decoding chips and a main decoding control chip, wherein the auxiliary audio decoding chips are connected with the main decoding control chip; the auxiliary audio decoding chip is used for decoding two different single audio contents from a pre-stored dual-audio content mixed file to be respectively used as a left channel analog audio signal and a right channel analog audio signal; the main decoding control chip is used for overlapping and playing the left channel audio analog signals decoded by the corresponding multiple auxiliary audio decoding chips and overlapping and playing the right channel audio analog signals decoded by the corresponding multiple auxiliary audio decoding chips when multiple groups of playing instructions are obtained.
Description
Technical Field
The invention relates to the technical field of audio processing, in particular to an intelligent audio sleep-aid instrument.
Background
The sleep-assisting instrument is an intelligent device which helps a user to relax the brain and enables the user to comfortably go to the dream, and is more and more favored by people. However, the hardware cost of the sleep aid instrument in the traditional technology is high, the played sound source is single, most of the sound sources are lack of fusion of multiple sound sources in the environment, and the intelligent degree is low.
Disclosure of Invention
The invention aims to provide an intelligent audio sleep aid instrument aiming at the problems in the prior art.
In one embodiment, the invention provides an intelligent audio sleep-aid instrument, which comprises a plurality of auxiliary audio decoding chips and a main decoding control chip, wherein the auxiliary audio decoding chips are connected with the main decoding control chip;
the auxiliary audio decoding chip is used for decoding two different single audio contents from a pre-stored dual-audio content mixed file to be respectively used as a left channel analog audio signal and a right channel analog audio signal;
the main decoding control chip is used for overlapping and playing the left channel audio analog signals decoded by the corresponding multiple auxiliary audio decoding chips and overlapping and playing the right channel audio analog signals decoded by the corresponding multiple auxiliary audio decoding chips when multiple groups of playing instructions are obtained.
In one embodiment, the method further comprises the following steps:
the left channel volume adjusting potentiometer is respectively connected to the left channel output end of the auxiliary audio decoding chip and the audio input end of the main decoding control chip, and the right channel volume adjusting potentiometer is respectively connected to the right channel output end of the auxiliary audio decoding chip and the audio input end of the main decoding control chip;
the left channel volume adjustment potentiometer and the right channel volume adjustment potentiometer are used for adjusting the signal quantity of the corresponding analog audio signal when the adjustment instruction is obtained, and outputting the adjusted analog audio signal to the main decoding control chip.
In one embodiment, the audio content in the dual audio content mixing file includes any two of a rain sound, a thunder sound, a sea wave sound, a bonfire sound, a sill raindrop sound, a forest bird sound, and a wind sound.
In one embodiment, the dual audio content mixing file is an audio merging file obtained by compiling two different audio contents into a left channel audio file and a right channel audio file respectively in advance and then merging the two different audio contents.
In one embodiment, the main decoding control chip is further configured to control audio playing from a pre-marked starting point in the analog audio signal when the loop playing instruction is obtained, and start playing from the starting point after playing to a pre-marked end point.
In one embodiment, the main decoding control chip is further configured to play the left channel audio analog signal and the corresponding right channel audio analog signal decoded by the corresponding one of the auxiliary audio decoding chips when the single set of play instructions is obtained.
In one embodiment, the audio amplifier further comprises a power amplifier circuit connected to the main decoding control chip and used for amplifying the audio analog signal output by the main decoding control chip.
In one embodiment, the digital audio player further comprises a total volume adjusting potentiometer connected between the main decoding control chip and the power amplifier circuit and used for adjusting the semaphore of the analog audio played by the main decoding control chip.
In one embodiment, the main decoding control chip is further configured to decode and play a pre-stored natural noise audio content file.
In one embodiment, the audio decoding device comprises five groups of secondary audio decoding chips; the total number of the single audio content files decoded by each secondary audio decoding chip is 10.
The intelligent audio sleep-aiding instrument comprises a plurality of auxiliary audio decoding chips and a main decoding control chip. The secondary audio decoding chip can decode the dual audio mixed file to obtain two different single audio contents which are respectively used as a left channel analog audio signal and a right channel analog audio signal. When the main decoding control chip receives a plurality of groups of instructions, the main decoding control chip can superpose and play the left channel audio analog signals decoded by the corresponding plurality of auxiliary audio decoding chips, and superpose and play the corresponding right channel audio analog signals. The auxiliary audio decoding chip can decode two independent different single audio contents to be output by the audio output ends of the left channel and the right channel, can meet different requirements of different users on hearing while reducing the hardware cost of the auxiliary audio decoding chip, is convenient for fusing various sound sources, and further improves the intelligent degree of the sleep aid.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
FIG. 1 is a schematic diagram of an intelligent audio sleep aid device according to an embodiment of the invention;
FIG. 2 is a schematic diagram of another embodiment of the intelligent audio sleep aid device;
FIG. 3 is a schematic diagram of an output circuit of a secondary audio decoding chip in the intelligent audio sleep aid device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an output circuit of a main decoding control chip of the intelligent audio sleep aid device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another output circuit of the main decoding control chip of the intelligent audio sleep aid device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another output circuit of the main decoding control chip of the intelligent audio sleep aid device according to an embodiment of the present invention.
Detailed Description
Various embodiments of the present invention will be described more fully hereinafter. The invention is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the scope of the invention to the specific embodiments disclosed herein, but on the contrary, the intention is to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of various embodiments of the invention.
Hereinafter, the terms "includes" or "may include" used in various embodiments of the present invention indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to mean that the specified features, numbers, steps, operations, elements, components, or combinations of the foregoing, are only meant to indicate that a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to the possibility of, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "at least one of a or/and B" includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The term "user" as used in various embodiments of the present invention may indicate a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).
Referring to fig. 1, an embodiment of the present invention provides an intelligent audio sleep-assisting apparatus, which includes a plurality of secondary audio decoding chips 110 and a primary decoding control chip 120.
The secondary audio decoding chip 110 is used for decoding two different single audio contents from the pre-stored dual audio content mixing file as a left channel analog audio signal and a right channel analog audio signal respectively.
The main decoding control chip 120 is configured to, when multiple groups of playing instructions are obtained, superimpose and play the left channel audio analog signals decoded by the corresponding multiple sub audio decoding chips 110, and superimpose and play the right channel audio analog signals of the corresponding multiple sub audio decoding chips 110.
The secondary audio decoding chip 110 can decode the dual audio content mixed file to obtain two single audio contents, and output the two single audio contents through the left audio output port VOUTL and the right audio output port VOUTR, i.e. two different kinds of music can be decoded at the same time and output separately from the left and right channels. The plurality of sets of playing commands are commands for playing the plurality of sets of audio contents in a superimposed manner, and include information for controlling the playing of the analog audio of the plurality of corresponding sub audio decoding chips 110. After receiving the multiple groups of playing instructions, the main decoding control chip 120 superimposes and plays the left channel audio analog signals decoded by the corresponding multiple sub audio decoding chips 110, and superimposes and plays the right channel audio analog signals decoded by the multiple sub audio decoding chips 110. Therefore, the effects of simultaneously superposing and mixing a plurality of single audio content files and randomly combining and playing a plurality of audios can be achieved. The total number of the single audio contents decoded by each secondary audio decoding chip 110 is equal to twice of the total number of the secondary audio decoding chips 110, so that the number of the secondary audio decoding chips 110 is reduced on the whole, and the hardware cost is reduced.
The intelligent audio sleep-aid instrument comprises a plurality of auxiliary audio decoding chips 110 and a main decoding control chip 120. The secondary audio decoding chip 110 may decode the dual audio mixing file into two different single audio contents as a left channel analog audio signal and a right channel analog audio signal, respectively. When receiving multiple sets of instructions, the main decoding control chip 120 may superimpose and play the left channel audio analog signals decoded by the corresponding multiple sub audio decoding chips 110, and superimpose and play the corresponding right channel audio analog signals. The auxiliary audio decoding chip 110 can decode two independent different single audio contents to be output by the audio output ends of the left channel and the right channel, so that the hardware cost of the auxiliary audio decoding chip 110 is reduced, different requirements of different users on hearing can be met, various audio sources can be conveniently fused, and the intelligent degree of the sleep aid is further improved.
Referring to fig. 2, in a specific embodiment, the method further includes:
a left channel volume adjustment potentiometer 130 respectively connected to the left channel output terminal VOUTL of the sub audio decoding chip 110 and the audio input terminal of the main decoding control chip 120, and a right channel volume adjustment potentiometer 140 respectively connected to the right channel output terminal VOUTR of the sub audio decoding chip 110 and the audio input terminal of the main decoding control chip 120.
The left channel volume adjustment potentiometer 130 and the right channel volume adjustment potentiometer 140 are configured to adjust the magnitude of the corresponding analog audio signal when the adjustment instruction is obtained, and output the adjusted analog audio signal to the main decoding control chip 120.
The secondary audio decoding chip 110 can decode the dual audio content mixed file to obtain two single audio contents, and output the two single audio contents through the left audio output port VOUTL and the right audio output port VOUTR, i.e. two different kinds of music can be decoded at the same time and output separately from the left and right channels. The left channel volume adjustment potentiometer 130 and the right channel volume adjustment potentiometer 140 connected thereto can adjust the magnitude of the analog audio signal outputted correspondingly to perform the volume adjustment function, and output the adjusted analog audio signal to the main decoding control chip 120. Wherein, the volume adjusting potentiometer of the left and right sound channels can send adjusting instructions by the way of keys or knobs.
The intelligent audio sleep aid instrument provided by the embodiment of the invention can adjust the volume of a single audio content through the volume adjusting potentiometers of the left and right channels, reduce the hardware cost of the secondary audio decoding chip 110, and simultaneously meet different requirements of different users on hearing, so that the audio is more fused and natural after being superposed and output through the main decoding control chip 120, and the audio mixing effect is further optimized.
In a specific embodiment, the dual audio content mixing file is an audio merging file obtained by compiling two different audio contents into a left channel audio file and a right channel audio file respectively in advance and then merging the two different audio contents.
According to the intelligent audio sleep-assisting instrument, the two different audio contents are compiled into the left channel audio file and the right channel audio file respectively in advance and are combined, so that the auxiliary audio decoding chip can be decoded and then separately output from the left channel audio output end and the right channel audio output end, a mixed superposition effect can be effectively achieved, and the auditory perception of a user is enhanced.
In a specific embodiment, the audio content in the dual audio content mixed file includes any two of rain sound, thunder sound, sea wave sound, bonfire sound, windowsill raindrop sound, forest bird sound, and wind sound.
The audio contents in the dual audio content mixed file include, but are not limited to, any two of rain sound, thunder sound, sea wave sound, bonfire sound, windowsill raindrop sound, forest bird sound, and wind sound.
According to the intelligent audio sleep-assisting instrument provided by the embodiment of the invention, the sound source diversification can meet the auditory requirements of different users, any sound source combination playing can be effectively realized, the sound mixing effect is favorably realized, the sound effect of the nature is simulated, and the sleep-assisting effect on the users is improved.
In a specific embodiment, five groups of secondary audio decoding chips are included; the total number of the single audio content files decoded by each secondary audio decoding chip is 10.
According to the intelligent audio sleep-assisting instrument provided by the embodiment of the invention, the set of auxiliary audio decoding chips can decode two independent audio contents through the left and right audio output ends, so that the number of the auxiliary audio decoding chips is reduced on the whole, the hardware cost is reduced, the integration level of the sleep-assisting instrument is improved, and the intelligent audio sleep-assisting instrument is convenient for a user to use.
Referring to fig. 3, the intelligent audio sleep aid device according to the embodiment of the present invention includes five sets of sub audio decoding chips U1, U2, U3, U4, and U5, and left and right channel volume adjustment potentiometers J1 to J10 are respectively connected to a left channel audio output terminal VOUTL or a right channel audio output terminal VOUTR of the corresponding sub audio decoding chip. In order to play a role in filtering and overcurrent protection, the adjusting output ends of the left and right sound channel volume adjusting potentiometers J1-J10 are respectively connected with a capacitor C1 and a resistor R1, and further, in order to reduce complicated winding wires, the output ends DAC-OUT of the J1-J10 can be uniformly connected to the output ends DAC-OUT of the left and right sound channel volume adjusting potentiometers J9 and J10 of the fifth group of auxiliary audio decoding chips U5 on the output side of the auxiliary audio decoding chips, and then are uniformly connected to the audio input ends AUXL and AUXR of the main decoding control chip U6. Specifically, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R2, a resistor R3 and a resistor R4 are also connected to play a role in filtering and overcurrent protection. Further, if the auxiliary audio decoding chip U1 can decode rain and thunder, the auxiliary audio decoding chip U2 can decode sea and bonfire, the auxiliary audio decoding chip U3 can decode running water and windowsill raindrop, the auxiliary audio decoding chip U4 can decode forest bird and wind, and the auxiliary audio decoding chip U5 can decode night environment sound and cradle music, and then output through the corresponding left and right channel audio output ends and the left and right channel volume adjustment potentiometers. The AGND ports of the left and right channel volume adjustment potentiometers J1-J10 are potential ground terminals.
The intelligent audio sleep-assisting instrument provided by the embodiment of the invention reduces the number of secondary audio decoding chips on the whole, reduces the hardware cost, improves the integration level of the sleep-assisting instrument, can realize the effect of superimposed sound mixing, and improves the intelligent degree and the hearing experience of a user.
In a specific embodiment, the main decoding control chip is further configured to control audio playing from a pre-marked start point in the analog audio signal when the loop playing instruction is obtained, and start playing from the start point after playing to a pre-marked end point.
When the intelligent audio sleep-assisting instrument provided by the embodiment of the invention is used for compiling a dual-audio content mixed file, the start point and the end point can be marked on the time axis of the audio content according to the time axis of the audio content, and further when the audio content is decoded into an analog audio signal by the auxiliary audio decoding chip and then played by the main decoding control chip, the main decoding control chip can control audio to be played circularly according to the pre-marked start point and end point in the analog audio signal. Therefore, the invention can realize the effect of seamless playing in the circular playing.
In a specific embodiment, the main decoding control chip is further configured to play the left channel audio analog signal and the corresponding right channel audio analog signal decoded by the corresponding one of the auxiliary audio decoding chips when the single set of play instruction is obtained.
The single-group play instruction main decoding control chip plays an instruction of a group of audio contents, and the instruction comprises analog audio information for controlling and playing a corresponding auxiliary audio decoding chip. And after the main decoding control chip receives the single group of playing instructions, the main decoding control chip plays the left channel audio analog signals decoded by the corresponding auxiliary audio decoding chip and plays the right channel audio analog signals decoded by the corresponding auxiliary audio decoding chip.
The intelligent sleep-assisting instrument provided by the embodiment of the invention can realize single-group playing according to the hearing requirements of users, and meets the hearing requirements of different users.
Referring to fig. 4, in a specific embodiment, the audio signal processing device further includes a power amplifier circuit 150 connected to the main decoding control chip 120, for amplifying the audio analog signal output by the main decoding control chip 120.
The intelligent audio sleep-assisting instrument provided by the embodiment of the invention has the advantages that the circuit structure is complete while the number of auxiliary audio decoding chips is reduced on the whole, and the auditory experience of a user is improved.
Referring to fig. 5, in a specific embodiment, the audio playback device further includes a total volume adjustment potentiometer 160 connected between the main decoding control chip 120 and the power amplifier circuit 150, for adjusting the semaphore of the analog audio played by the main decoding control chip 120.
The total volume adjustment potentiometer 160 may be a knob potentiometer.
The intelligent audio sleep aid instrument further comprises a total volume adjusting potentiometer 160 connected between the main decoding control chip 120 and the power amplifier circuit 150, so that the total volume can be adjusted before playing, the hearing requirements of different users are met, the played audio is closer to the hearing habits of the users, and the intelligent degree is high.
Referring to FIG. 6, in a specific embodiment, the power amplifier circuit includes a power amplifier chip U13, the left channel audio output DAC-L of the main decoding control chip U6 is connected to the left channel adjustment input DAC-L of the total volume adjustment potentiometer J11, and the right channel audio output DAC-R of the main decoding control chip U6 is connected to the right channel adjustment input DAC-R of the total volume adjustment potentiometer J11. The left channel adjusting output end INL of the total volume adjusting potentiometer J11 is connected to OUTR + of the power amplifier chip U13, the right channel adjusting output end INR of the total volume adjusting potentiometer J11 is connected to INR of the power amplifier chip U13, and CTRL and INR + of the power amplifier chip U13 are connected to the potential ground end AGND of the total volume adjusting potentiometer J11. And the audio output end of the power amplifier chip U13 is connected with a loudspeaker BR and a loudspeaker BR.
Further, the total volume adjustment potentiometer J11 further includes power supply terminals VBAT and BAT for supplying power to devices such as the main control chip U6.
The intelligent audio sleep-assisting instrument provided by the embodiment of the invention has a perfect structure and is beneficial to providing a good circuit environment for the audio output side of the sleep-assisting instrument.
The intelligent audio sleep-assisting instrument provided by the embodiment of the invention is complete in structure.
In a specific embodiment, the main decoding control chip is further configured to decode and play a pre-stored natural noise audio content file.
The main decoding control chip also has an audio decoding function and outputs and plays the decoded audio.
Natural noise of an appropriate volume may help the brain relax so that the user may feel the feeling of the natural environment. According to the intelligent audio sleep-assisting instrument provided by the embodiment of the invention, the main decoding control chip can decode and play the pre-stored file in the natural noise audio, so that the intelligent audio sleep-assisting instrument is complete in function and can meet the sleep-assisting requirements of different users.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. Terms such as those defined in commonly used dictionaries will be interpreted as having a meaning that is the same as a contextual meaning in the related art and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein in various embodiments of the present invention.
Claims (10)
1. An intelligent audio sleep-aiding instrument is characterized by comprising a plurality of auxiliary audio decoding chips and a main decoding control chip;
the secondary audio decoding chip is used for decoding two different single audio contents from a pre-stored dual-audio content mixed file to be respectively used as a left channel analog audio signal and a right channel analog audio signal;
the main decoding control chip is used for overlapping and playing the left channel audio analog signals decoded by the corresponding multiple auxiliary audio decoding chips and overlapping and playing the right channel audio analog signals decoded by the corresponding multiple auxiliary audio decoding chips when multiple groups of playing instructions are obtained.
2. The intelligent audio sleep aid according to claim 1, further comprising:
the left channel volume adjusting potentiometer is respectively connected to the left channel output end of the auxiliary audio decoding chip and the audio input end of the main decoding control chip, and the right channel volume adjusting potentiometer is respectively connected to the right channel output end of the auxiliary audio decoding chip and the audio input end of the main decoding control chip;
the left channel volume adjustment potentiometer and the right channel volume adjustment potentiometer are used for adjusting the magnitude of the semaphore of the corresponding analog audio signal when an adjustment instruction is obtained, and outputting the adjusted analog audio signal to the main decoding control chip.
3. The intelligent audio sleep aid according to claim 1, wherein the audio content in the dual audio content mixed file comprises any two of rain, thunder, sea wave, bonfire, sill raindrop, forest bird, and wind.
4. The intelligent audio sleep aid according to claim 1, wherein the dual audio content mixing file is an audio merging file obtained by previously compiling two different audio contents into a left audio file and a right audio file, respectively, and then merging the two different audio contents.
5. The intelligent audio sleep aid according to claim 1, wherein the main decoding control chip is further configured to control audio playing from a pre-marked starting point in the analog audio signal when the loop playing instruction is obtained, and to start playing from the starting point after playing to a pre-marked end point.
6. The intelligent audio sleep-aid device according to claim 1, wherein the main decoding control chip is further configured to play the left channel audio analog signal and the right channel audio analog signal decoded by the corresponding secondary audio decoding chip when the single set of playing instructions is obtained.
7. The intelligent audio sleep-aid device according to claim 1, further comprising a power amplifier circuit connected to said main decoding control chip for amplifying the audio analog signal outputted from said main decoding control chip.
8. The intelligent audio sleep aid according to claim 7, further comprising a total volume adjustment potentiometer connected between said main decoding control chip and said power amplifier circuit for adjusting the semaphore of the analog audio played by said main decoding control chip.
9. The intelligent audio sleep-aid device according to claim 1, wherein the main decoding control chip is further configured to decode and play a pre-stored natural noise audio content file.
10. The intelligent audio sleep aid according to any one of claims 1 to 9, comprising five sets of said secondary audio decoding chips; the total number of the single audio content files decoded by each secondary audio decoding chip is 10.
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