CN111131939A - Audio playing device - Google Patents
Audio playing device Download PDFInfo
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- CN111131939A CN111131939A CN201911333619.3A CN201911333619A CN111131939A CN 111131939 A CN111131939 A CN 111131939A CN 201911333619 A CN201911333619 A CN 201911333619A CN 111131939 A CN111131939 A CN 111131939A
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- control unit
- audio
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- main control
- mosquitoes
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/16—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves
- A01M29/18—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves using ultrasonic signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M2200/00—Kind of animal
- A01M2200/01—Insects
- A01M2200/012—Flying insects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/02—Details of telephonic subscriber devices including a Bluetooth interface
Abstract
The invention provides an audio playing device, which comprises a main control unit, a digital-to-analog converter, a power amplifier, a loudspeaker and a communication interface unit. The communication interface unit receives an audio signal from the outside, the audio signal from the communication interface unit is converted into analog information through the digital-to-analog converter under the control of the main control unit, and the analog information is amplified by the power amplifier and then played by the loudspeaker. After the mosquito repelling mode is started, the main control unit obtains an ultrasonic signal with a preset frequency, the ultrasonic signal is converted into an analog signal through the digital-to-analog converter, power amplification is carried out through the power amplifier, and then the ultrasonic signal with the preset frequency is played through the loudspeaker. Like this, can utilize audio signal's processing route to carry out ultrasonic signal's processing and broadcast, reuse the audio processing route and realize the effect of mosquito repellent worm, realize with low costs, the commonality is strong.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of audio playing, and in particular, to an audio playing apparatus.
[ background of the invention ]
In summer, people are often disturbed by the bite of mosquitoes. Generally, people buy common mosquito coils, electric mosquito coils or mosquito nets to repel or repel mosquitoes.
A new electronic mosquito dispeller appears at present, and the working principle is as follows: the method is characterized in that a loudspeaker is used for simulating the sound of natural enemies of mosquitoes, such as dragonflies, bats or male mosquitoes, so that a noise environment which is difficult to bear by the mosquitoes is created, and the mosquitoes are driven; alternatively, the sound wave of the male mosquito's puppet can be simulated to allow the pregnant female mosquito to escape. However, the electronic mosquito dispeller needs to be manufactured separately, has no other functions and is low in utilization rate.
Generally, frequencies between 20Hz-20KHz are referred to as sonic waves, frequencies above 20KHz are referred to as ultrasonic waves, and frequencies below 20Hz are referred to as infrasonic waves. The ultrasonic wave can not be heard by human ears, so that the ultrasonic wave is utilized to repel mosquitoes, the user is not interfered, and the aim of repelling the mosquitoes can be achieved.
At present, other electronic products using ultrasonic waves to repel mosquitoes, such as a mobile phone with a mosquito repelling function and a sound box with a mosquito repelling function, are also available, however, the electronic products need to be provided with an independent ultrasonic generator and a special speaker, and the implementation scheme is high in cost and poor in universality.
In addition, most of the existing electronic mosquito repelling schemes need manual work to start and select the frequency of ultrasonic waves, and even if mosquitoes do not exist around, the mosquito repelling ultrasonic waves can be transmitted in the same way, so that useless power consumption is caused. Moreover, the existing electronic mosquito repelling scheme cannot automatically identify the mosquito type, or manually select the type of the object to be repelled, or the system plays the ultrasonic wave aiming at the default type of the mosquito according to factory settings, so that the mosquito repelling effect is not obvious, and even the use confidence of a user is influenced.
Therefore, there is a need for an improved solution to the above problems.
[ summary of the invention ]
The invention aims to provide an audio playing device which can utilize a processing path of an audio signal to process and play an ultrasonic signal, and reuses the audio processing path to realize the effect of repelling mosquitoes, and has low cost and strong universality.
According to an aspect of the present invention, the present invention provides an audio playing apparatus, including a main control unit, a digital-to-analog converter, a power amplifier, a speaker, and a communication interface unit, wherein the communication interface unit receives an audio signal from outside, the audio signal from the communication interface unit is converted into analog information by the digital-to-analog converter under the control of the main control unit, and is played by the speaker after being power amplified by the power amplifier, after entering a mosquito repelling mode, the main control unit obtains an ultrasonic signal with a predetermined frequency, the ultrasonic signal is converted into an analog signal by the digital-to-analog converter, and after being power amplified by the power amplifier, the speaker plays the ultrasonic signal with the predetermined frequency.
Further: the digital-to-analog converter comprises a low-pass filter, one or more band-pass filters and a digital-to-analog conversion unit, wherein the band-pass filters are set to allow ultrasonic signals with preset frequencies to pass, audio signals from the main control unit are processed by the low-pass filters and the one or more band-pass filters and then are transmitted to the digital-to-analog conversion unit, before the main control unit enters a mosquito repelling mode, the band-pass filters are disabled, only the low-pass filters output the filtered audio signals to the digital-to-analog conversion unit at the moment, after the main control unit enters the mosquito repelling mode, the one or more band-pass filters are enabled, and the low-pass filters and the enabled band-pass filters output the filtered sound wave signals to the digital-to-.
Further: the power amplifier simultaneously supports power amplification of ultrasonic signals and audio signals, and the loudspeaker comprises a plurality of loudspeaker units, wherein part of the loudspeaker units are set to support playing of the ultrasonic signals.
Further: after the mosquito repelling mode is started, the main control unit mixes ultrasonic signals with preset frequency with audio signals received by the communication interface unit from the outside, the digital-to-analog converter conducts digital-to-analog conversion on the mixed signals, the power amplifier conducts power amplification on the mixed signals, and the loudspeaker plays the mixed signals after power amplification.
Further: the audio playing device also comprises a storage unit, wherein one or more ultrasonic signals with preset frequency are stored in the storage unit; after entering a mosquito repelling mode, the main control unit acquires an ultrasonic signal with a preset frequency from the storage unit.
Further: the ultrasonic signal of the predetermined frequency is generated by the main control unit.
Further: the master control unit obtains a mosquito repelling control instruction from the communication interface unit, the mosquito repelling control instruction specifies the frequency and/or amplitude of the ultrasonic signal, the ultrasonic signal enters a mosquito repelling mode after the mosquito repelling control instruction is received, and the master control unit generates the ultrasonic signal with the preset frequency based on the frequency and/or amplitude; or, the audio playing device further comprises an input unit, the input unit is used for inputting a mosquito repelling control instruction, the mosquito repelling control instruction specifies the frequency and/or amplitude of the ultrasonic signal, and the main control unit generates the ultrasonic signal with the preset frequency based on the frequency and/or amplitude.
Further: the audio playing device further comprises: the microphone is used for collecting ambient sound; the analog-to-digital converter is used for performing analog-to-digital conversion on the environment sound.
Further: the main control unit obtains the type of nearby target mosquitoes based on the audio signals of the ambient environment sounds collected by the microphone, further determines the frequency of the ultrasonic signals for repelling the target mosquitoes, and plays the ultrasonic signals with preset frequency.
Further: the main control unit determines whether to enter a mosquito repelling mode or not based on the audio signals of the ambient environment sounds collected by the microphone.
Further: the storage unit stores voiceprint reference templates of various types of mosquitoes, the main control unit analyzes audio signals collected by the microphone to obtain voiceprint characteristics to be processed, compares the voiceprint characteristics to be processed with the voiceprint reference templates to find the voiceprint reference template which is most matched with the voiceprint characteristics to be processed, and determines the mosquito type corresponding to the most matched voiceprint reference template as the type of the target mosquito nearby.
Further: including the artificial intelligence module based on degree of depth study in the master control unit, the artificial intelligence module has the artificial neural network model that obtains through training in advance, the artificial intelligence module draws sample eigenvalue among the audio signal that the microphone was gathered, and input extremely the artificial neural network model to obtain the mosquito type value that contains in the current audio signal.
Further: the artificial neural network model is obtained in advance based on the training of the sound signals of the repelled mosquitoes, and/or the artificial neural network model is obtained in advance based on the training of the sound signals of the natural enemies of the repelled mosquitoes.
Further: the master control unit counts the number of times that the microphone captures one or more types of mosquitoes within a preset time period and is greater than a preset threshold value, then the master control unit considers that a large number of one or more types of mosquitoes exist in the area, further enters a mosquito repelling mode, and selects to play corresponding ultrasonic waves to repel the identified mosquitoes; and/or when the main control unit counts the number of times of the natural enemies of the mosquitoes caught by the microphone within the preset time length and exceeds a preset threshold value, the mosquitoes in the area are considered to be more, then the main control unit enters a mosquito repelling mode, and corresponding ultrasonic waves are selected to be played so as to repel the mosquitoes considered to possibly exist in the area.
Further: the audio playing device is a Bluetooth sound box, and the communication interface unit is a Bluetooth communication unit.
Compared with the prior art, in the audio playing device provided by the invention, the audio signal and the ultrasonic signal are played by the loudspeaker after sequentially passing through the digital-to-analog converter and the power amplifier, the audio signal and the ultrasonic signal share the same channel, an audio processing channel is multiplexed to realize the effect of repelling mosquitoes, and the low cost and the strong universality are realized.
Specific, further advantageous effects that can be achieved by the present invention will be described in detail below with reference to specific embodiments.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a block diagram of an audio playback device of the present invention in one embodiment;
FIG. 2 is a block diagram of a digital-to-analog converter in an audio playback device according to an embodiment of the present invention;
fig. 3 is a flowchart of a mosquito repelling method of the audio playing device shown in fig. 1.
[ detailed description ] embodiments
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The invention provides an audio playing device, which can utilize a processing path of an audio signal to process and play an ultrasonic signal, and reuses the audio processing path to realize the effect of mosquito repelling, and has low cost and strong universality.
Fig. 1 is a block diagram of an audio playback device 100 according to an embodiment of the present invention. As shown in fig. 1, the audio playing apparatus 100 of the present invention includes a power module 110, an input unit 120, a storage unit 130, a main control unit 140, a communication interface unit 150, an encoding unit 151, a decoding unit 152, a digital-to-analog converter 160, a power amplifier 170, a speaker 180, a microphone 190, and an analog-to-digital converter 210.
The audio playing apparatus 100 may be a bluetooth speaker, a Wifi speaker, or a wired device. The communication interface unit 150 may be a bluetooth communication unit, a Wifi communication unit, or other wired communication units.
The power module 110 is used for supplying power to the audio playing device 100.
The input unit 120 is configured to serve as a human-computer interaction command interface, and receive various control commands input by a user. The control instruction at least comprises a mosquito repelling mode control instruction, and also comprises an audio playing device on-off instruction, a volume adjusting instruction, a mute instruction and the like, and the control instruction can be an input module such as a touch panel and a key.
The storage unit 130 is used to store various data necessary for the operation of the apparatus, such as a control program and control information. In a preferred embodiment, the storage unit 130 may be used to store one or more predetermined frequency ultrasonic signals in advance, such as a first ultrasonic signal simulating a bat, a second ultrasonic signal simulating a male mosquito, a third ultrasonic signal simulating a dragonfly, and so on, and the frequencies of the various ultrasonic signals may be different. The predetermined frequency may be, for example, 22KHz, 40KHz, etc.
The main control unit 140 is a control center of the audio playing apparatus 100, and is connected to other modules in the audio playing apparatus 100 by using various interfaces and lines, and performs overall monitoring and scheduling on each module of the audio playing apparatus 100, so as to implement each function of the audio playing apparatus 100.
The communication interface unit 150 is configured to perform data interaction with an external device (e.g., a smart phone) according to a predetermined communication protocol. In a preferred embodiment, the audio playback apparatus 100 is a bluetooth audio playback apparatus 100, which establishes a wireless communication link with an external device based on the bluetooth specification.
The encoding unit 151 is configured to encode data that the audio playing apparatus 100 needs to output to an external device, and output the encoded data to the communication unit for transmission.
The decoding unit 152 is configured to decode data received by the communication interface unit 150 from an external device.
The analog-to-digital converter 160 is configured to perform digital-to-analog conversion on the signal from the main control unit 140, where the signal from the main control unit 140 may be a common audio signal, such as music, a voice of a person during a telephone call, or an ultrasonic signal, such as an ultrasonic signal with a predetermined frequency stored in the memory 130, or an ultrasonic signal with a predetermined frequency directly generated by the main control unit 140.
The power amplifier 170 is used for power amplifying the signal from the analog-to-digital converter 160. Of course, it can not only power-amplify the common audio signal, but also power-amplify the ultrasonic signal.
The speaker 180 may be a mono speaker or a multi-channel speaker. The speaker 180 may play not only a general audio signal but also an ultrasonic signal of a predetermined frequency.
The microphone 190 may include one microphone, may include a plurality of microphones, and may be a microphone array. The microphone 190 may collect audio signals with frequencies less than 20KHz or ultrasonic signals with frequencies greater than 20 KHz.
The analog-to-digital converter 210 is used for analog-to-digital converting the signal from the microphone 190, and in one embodiment, the analog-to-digital converted signal is transmitted to the main control unit 140.
The audio playing apparatus 100 may be a bluetooth speaker or a bluetooth headset, and may be used to play music. Specifically, the bluetooth speaker and the smart phone establish wireless communication, and a piece of music is played on the smart phone, and a related audio signal is transmitted to the bluetooth speaker through wireless communication, and the audio signal being played is played by the speaker 180 after passing through the decoding unit 152, the main control unit 140, the digital-to-analog conversion unit 160, and the power amplifier 170 in sequence.
The audio playback device 100 can also be used to conduct a call. Specifically, the bluetooth headset and the smart phone establish wireless communication, the smart phone transmits a far-end call audio to the bluetooth headset through wireless communication, and a call audio signal being played is played by the speaker 180 after sequentially passing through the decoding unit 152, the main control unit 140, the digital-to-analog conversion unit 160 and the power amplifier 170; meanwhile, the microphone 190 collects a local audio signal, and the local audio signal is transmitted by the communication interface unit 150 after passing through the analog-to-digital converter 210, the audio processing unit, the main control unit 140, and the encoding unit 151 in sequence.
The audio playback device 100 can also be used to repel mosquitoes. The audio playing device 100 may enter the mosquito repelling mode after receiving an external mosquito repelling control command, for example, the mosquito repelling control command may be obtained from the communication interface unit 150, or the mosquito repelling control command may be obtained from the input unit 130. After entering the mosquito repelling mode, the main control unit 140 may obtain an ultrasonic signal with a predetermined frequency, transmit the ultrasonic signal to the digital-to-analog converter 160, perform power amplification on the ultrasonic signal through the power amplifier 180, and finally play the ultrasonic signal through the speaker 180. It can be seen that the audio signal and the ultrasonic signal are played by the speaker 180 after sequentially passing through the digital-to-analog converter 160 and the power amplifier 170, and both share the same output channel, so that the mosquito repelling effect is realized, and the low cost and the strong universality are realized.
The ultrasonic signal of the predetermined frequency may be obtained from the storage unit 130 by the main control unit 140, or may be generated by the main control unit 140. In one embodiment, the mosquito repelling control instruction includes a frequency and/or an amplitude of an ultrasonic signal, or the mosquito repelling control instruction corresponds to the frequency and/or the amplitude of the ultrasonic signal, and the main control unit 140 generates the ultrasonic signal with a predetermined frequency based on the mosquito repelling control instruction.
In one embodiment, after entering the mosquito repelling mode, the audio playing apparatus 100 may pause playing the audio signal, and at this time, the speaker 180 only plays the ultrasonic signal. In another embodiment, after entering the mosquito repelling mode, the main control unit 140 may mix the ultrasonic wave signal with the audio signal being played, and the mixed signal sequentially passes through the digital-to-analog converter 160 and the power amplifier 170, and finally the audio signal and the ultrasonic wave signal are simultaneously played through the speaker 180, so that the audio playing and mosquito repelling functions can be simultaneously realized, and normal listening music and calling of a user are not affected.
In one embodiment, as shown in fig. 2, the digital-to-analog converter 160 includes a low pass filter 161, one or more band pass filters 162, and a digital-to-analog conversion unit 163, and the audio signal from the main control unit 140 is transmitted to the digital-to-analog conversion unit 163 through the low pass filter 161 and the band pass filters 162, respectively, wherein each band pass filter 162 corresponds to a predetermined frequency of the ultrasonic signal.
Before entering the mosquito repelling mode, the band-pass filter 162 is disabled, and only the low-pass filter 161 outputs the filtered audio signal to the digital-to-analog conversion unit 163, and at this time, the digital-to-analog converter 160 can normally process the audio signal. The low pass filter 160 has a cut-off frequency of about 20KHz, i.e. audio signals with frequencies higher than 20KHz will be filtered out. After entering the mosquito repelling mode, one or more predetermined band pass filters 162 are enabled, the low pass filter 162 and the enabled band pass filter 162 output the filtered sound wave signal to the digital-to-analog conversion unit 163, and the band pass filter 162 allows the predetermined filtered ultrasonic wave signal to pass through, so that the digital-to-analog converter 160 can support the processing of the ultrasonic wave signal.
The power amplifier 170, which is commonly used, is mostly capable of supporting power amplification of both the ultrasonic signal and the audio signal. The speaker 180 may include a plurality of speaker units, wherein some of the speaker units support the playing of ultrasonic signals, and the rest of the speaker units support the playing of audio signals.
In order to further improve the effectiveness of repelling mosquitoes, the embodiment of the present application also aims to improve the capability of the audio playback apparatus 100 to automatically identify mosquito types. Research has shown that acoustic signals are important information that is shown in the life activities of insects. Insects make sounds through their vocal organs, and also make sounds during their activities such as feeding, flying, etc., such as cicada's singing, bird's singing, and insect wing vibration. Most of the sounds made by insects have species specificity, and therefore, the sound characteristics of insects can be used as a basis for identifying the insect species. For example, when a female mosquito flies, the continuous wing vibration sound formed by flapping the wings up and down has no tone change, the waveform is a sine wave or a slightly incomplete sine wave, the wing vibration sound frequency is generally 300-500 Hz, the wing vibration sound frequency of female mosquitoes of different mosquito species is different, but the wing vibration sound frequency change among the same species is small, and the wing vibration sound frequency change is usually within +/-50 Hz of the average frequency. The wing vibration frequency of the male mosquito and the female mosquito is greatly different, and the wing vibration frequency of the natural enemy dragonfly and bat of the mosquito is much lower than that of the mosquito.
In a preferred embodiment, the main control unit 140 may obtain the type of the target mosquito nearby based on the sound signal collected by the microphone 190, determine the frequency of the ultrasonic signal for repelling the target mosquito, and generate and play the ultrasonic signal with a predetermined frequency.
The microphone 190 captures the environmental sound around the audio playing device 100, the main control unit 140 obtains the current type of the mosquito based on the analysis of the environmental sound collected by the microphone 190, selects the ultrasonic frequency for repelling the target mosquito according to the type of the mosquito, and generates and plays the ultrasonic signal with the predetermined frequency. Like this, even if after getting into the mosquito repellent mode, when there is not the mosquito near, also need not to send ultrasonic signal, when having the mosquito near the control, just send the ultrasonic signal of mosquito repellent, the consumption of saving that like this can be great. In addition, the present invention may also select the most effective ultrasonic signal for a particular type of mosquito. Of course, the main control unit 140 may also determine whether to enter the mosquito repelling mode based on the sound signal collected by the microphone 190, so as to automatically determine whether to enter the mosquito repelling mode, enter the mosquito repelling mode when determining that there are mosquitoes, and not enter the mosquito repelling mode when determining that there are no mosquitoes. The main control unit 140 may also count the number of times of capturing various types of mosquitoes within a predetermined time period, and when the number of times of capturing a certain type or types of mosquitoes within the predetermined time period is greater than a preset threshold, it is determined that a large number of the certain type or types of mosquitoes exist in the area, and then the area enters a mosquito repelling mode, and the ultrasonic wave for repelling the certain type or types of mosquitoes is selectively played.
In one embodiment, before the main control unit 140 analyzes the current mosquito type based on the environmental sound collected by the microphone 190, the environmental sound may be subjected to a noise cancellation process. The noise cancellation process may be performed before or after the analog-to-digital conversion.
In one embodiment, the storage unit 140 may store Voiceprint reference templates of multiple types of mosquitoes, the main control unit 140 analyzes the audio signal acquired by the microphone 190 to obtain a Voiceprint feature to be processed, compares the Voiceprint feature to be processed with each Voiceprint reference template, finds a Voiceprint reference template that is most matched with the Voiceprint feature to be processed, and determines a mosquito type corresponding to the most matched Voiceprint reference template as a type of a target mosquito nearby, where the Voiceprint reference template is obtained through training based on a Voiceprint (Voiceprint) recognition technology.
The training of the voiceprint reference template can be performed on the audio playing device, preferably, in the server, and the audio playing device only needs to download the trained voiceprint reference template.
In another alternative embodiment, the main control unit 140 includes an artificial intelligence module based on deep learning. The artificial intelligence module can be formed based on an artificial neural network algorithm. The artificial intelligence module is trained in advance to identify the type of mosquitoes according to sound waves collected by a microphone, it is required to be known that the training process of the artificial intelligence module can be performed in a server, then the artificial intelligence module of a training number is installed in the main control unit 140, at present, the artificial neural network technology has been widely applied in the technical field of insect classification and identification, in a preferred embodiment, insect wing ringing signals are recorded by the microphone, a power spectrum of the ringing signals is obtained from a frequency domain characteristic diagram of the ringing, the power spectrum can reflect the frequency components of the ringing signals and the energy of each frequency component, so that sufficient number of characteristic values capable of reflecting the characteristics of the sample are extracted, for example, frequencies corresponding to the first N maximum amplitude values are used as characteristic values and are used as a training sample set and a feed-forward amplification sample set, and a multilayer artificial neural network structure-BP (back propagation) is based on the artificial neural network, training to obtain the artificial neural network model required by the embodiment, and transplanting the artificial application network model into the artificial intelligent module. . The artificial intelligence module based on deep learning can adopt supervised learning to train and also can adopt unsupervised learning to train. Thus, the artificial intelligence module can analyze the current mosquito type based on the sound signal collected by the microphone 190.
In another embodiment, the main control unit 140 may further analyze and obtain whether the current environmental sound includes the sound of a natural enemy (such as bat, dragonfly, etc.) repelling mosquitoes based on the environmental sound collected by the microphone 190. When the number of times of the natural enemies of the mosquitoes caught in the preset time exceeds the preset threshold value, the mosquitoes in the area are considered to be more, and then the mosquito repelling mode is entered, and the corresponding mosquito repelling ultrasonic wave is selected to be played.
Based on the same inventive concept, the embodiment of the present invention further provides a mosquito repelling method for the audio playing device 100. Fig. 2 is a flowchart of a mosquito repelling method 300 of the audio playing device shown in fig. 1. The mosquito repelling method 300 comprises the following steps:
in step 310, the audio playback device 100 enters the mosquito repelling mode.
In an embodiment, the audio playing device 100 may enter the mosquito repelling mode after receiving the mosquito repelling control instruction from the input unit 120 or the communication interface unit, or determine whether the mosquito repelling mode is needed according to the signal collected by the microphone 190.
In step 320, the main control unit 140 obtains an ultrasonic signal with a predetermined frequency.
In one embodiment, the main control unit 140 may obtain the ultrasonic signal with a predetermined frequency from the storage unit 130, and may also generate the ultrasonic signal with a fixed frequency according to the mosquito repelling control instruction, where the mosquito repelling control instruction specifies the frequency and/or amplitude of the ultrasonic signal to be generated.
In step 330, the ultrasonic signal is played by the speaker 180 after passing through the digital-to-analog converter 160 and the power amplifier 170 in sequence.
Playing can pause playing audio signals when the ultrasonic signals are played, only playing the ultrasonic signals to repel mosquitoes at this moment, certainly can not pause the playing of the audio signals, at this moment, the main control unit 140 can mix the ultrasonic signals with the audio signals, the mixed signals sequentially pass through the digital-to-analog converter 160, the power amplifier 170 and finally the loudspeaker 180 plays the audio signals and the ultrasonic signals, so that the audio playing and mosquito repelling functions can be realized simultaneously, and normal listening music and calling of a user are not hindered.
It should be understood by those skilled in the art that, based on the technical idea of the embodiments of the present invention, the embodiments of the present invention can be used to expel not only mosquitoes, but also other animals that can be expelled by using ultrasonic wave technology, for example, to emit ultrasonic waves simulating bats to expel moths. Therefore, "repelling mosquitoes" in the claims and the specification of the present invention should be understood not only as repelling mosquitoes but also as being understood according to the specific repelling subject.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
Claims (15)
1. An audio playback apparatus, comprising: comprises a main control unit, a digital-to-analog converter, a power amplifier, a loudspeaker and a communication interface unit, wherein,
the communication interface unit receives audio signals from the outside, the audio signals from the communication interface unit are converted into analog information through the digital-to-analog converter under the control of the main control unit, and are played by the loudspeaker after being amplified by the power amplifier,
after the mosquito repelling mode is started, the main control unit obtains an ultrasonic signal with a preset frequency, the ultrasonic signal is converted into an analog signal through the digital-to-analog converter, power amplification is carried out through the power amplifier, and then the ultrasonic signal with the preset frequency is played through the loudspeaker.
2. The audio playback apparatus of claim 1, wherein: the digital-to-analog converter comprises a low-pass filter, one or more band-pass filters and a digital-to-analog conversion unit, wherein the band-pass filters are arranged to allow an ultrasonic signal of a predetermined frequency to pass,
the audio signal from the main control unit is processed by a low-pass filter and one or more band-pass filters and then transmitted to the digital-to-analog conversion unit,
before entering into mosquito repellent mode, the band-pass filter is disabled, only the low-pass filter outputs the filtered audio signal to the digital-to-analog conversion unit,
after entering a mosquito repelling mode, one or more band-pass filters are enabled, and the low-pass filter and the enabled band-pass filter output the filtered sound wave signals to the digital-to-analog conversion unit.
3. The audio playback apparatus of claim 2, wherein: the power amplifier supports both power amplification of the ultrasonic signal and the audio signal,
the loudspeaker comprises a plurality of loudspeaker units, wherein part of the loudspeaker units are arranged to support the playing of ultrasonic signals.
4. The audio playback apparatus of claim 1, wherein:
after the mosquito repelling mode is started, the main control unit mixes ultrasonic signals with preset frequency with audio signals received by the communication interface unit from the outside, the digital-to-analog converter conducts digital-to-analog conversion on the mixed signals, the power amplifier conducts power amplification on the mixed signals, and the loudspeaker plays the mixed signals after power amplification.
5. The audio playback apparatus of claim 1, wherein: the ultrasonic wave transducer further comprises a storage unit, wherein one or more ultrasonic wave signals with preset frequencies are stored in the storage unit;
after entering a mosquito repelling mode, the main control unit acquires an ultrasonic signal with a preset frequency from the storage unit.
6. The audio playback apparatus of claim 1, wherein: the ultrasonic signal of the predetermined frequency is generated by the main control unit.
7. The audio playback apparatus of claim 6, wherein: the master control unit obtains a mosquito repelling control instruction from the communication interface unit, the mosquito repelling control instruction specifies the frequency and/or amplitude of the ultrasonic signal, the ultrasonic signal enters a mosquito repelling mode after the mosquito repelling control instruction is received, and the master control unit generates the ultrasonic signal with the preset frequency based on the frequency and/or amplitude; alternatively, the first and second electrodes may be,
the audio playing device further comprises an input unit, wherein a mosquito repelling control instruction is input through the input unit, the mosquito repelling control instruction specifies the frequency and/or amplitude of the ultrasonic signal, and the main control unit generates the ultrasonic signal with the preset frequency based on the frequency and/or amplitude.
8. The audio playback apparatus of one of claims 1 to 7, wherein: it still includes: a microphone and an analog-to-digital converter,
the microphone is used for collecting ambient sound;
the analog-to-digital converter is used for performing analog-to-digital conversion on the environment sound.
9. The audio playback apparatus of claim 8, wherein: the main control unit obtains the type of nearby target mosquitoes based on the audio signals of the ambient environment sounds collected by the microphone, further determines the frequency of the ultrasonic signals for repelling the target mosquitoes, and plays the ultrasonic signals with preset frequency.
10. The audio playback apparatus of claim 9, wherein: the main control unit determines whether to enter a mosquito repelling mode or not based on the audio signals of the ambient environment sounds collected by the microphone.
11. The audio playback apparatus of claim 9, wherein:
the storage unit stores voiceprint reference templates of various types of mosquitoes, the main control unit analyzes audio signals collected by the microphone to obtain voiceprint characteristics to be processed, compares the voiceprint characteristics to be processed with the voiceprint reference templates to find the voiceprint reference template which is most matched with the voiceprint characteristics to be processed, and determines the mosquito type corresponding to the most matched voiceprint reference template as the type of the target mosquito nearby.
12. The audio playback apparatus of claim 9, wherein: including the artificial intelligence module based on degree of depth study in the master control unit, the artificial intelligence module has the artificial neural network model that obtains through training in advance, the artificial intelligence module draws sample eigenvalue among the audio signal that the microphone was gathered, and input extremely the artificial neural network model to obtain the mosquito type value that contains in the current audio signal.
13. The audio playback apparatus of claim 12, wherein: the artificial neural network model is obtained in advance based on the training of the sound signals of the repelled mosquitoes, and/or,
the artificial neural network model is obtained in advance based on training of sound signals of natural enemies of the repelled mosquitoes.
14. The audio playback apparatus of claim 13, wherein: the master control unit counts the number of times that the microphone captures one or more types of mosquitoes within a preset time period and is greater than a preset threshold value, then the master control unit considers that a large number of one or more types of mosquitoes exist in the area, further enters a mosquito repelling mode, and selects to play corresponding ultrasonic waves to repel the identified mosquitoes; and/or the presence of a gas in the gas,
when the number of times of the natural enemies of the repelled mosquitoes captured by the microphone in the preset time length is counted by the main control unit to exceed the preset threshold value, the mosquitoes in the area are considered to be more, then the mosquitoes enter a mosquito repelling mode, and corresponding ultrasonic waves are selected to be played to repel the mosquitoes which are considered to possibly exist in the area.
15. The audio playback apparatus of claim 1, wherein: it is the bluetooth speaker, the communication interface unit is bluetooth communication unit.
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