CN104618845A - Method for monitoring surrounding sound and portable mobile device - Google Patents
Method for monitoring surrounding sound and portable mobile device Download PDFInfo
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- CN104618845A CN104618845A CN201410779685.4A CN201410779685A CN104618845A CN 104618845 A CN104618845 A CN 104618845A CN 201410779685 A CN201410779685 A CN 201410779685A CN 104618845 A CN104618845 A CN 104618845A
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Abstract
The invention discloses a method implemented by a portable mobile device for monitoring surrounding sound and the portable mobile device. The method includes the steps that: the portable mobile device collects surrounding sound signals in real time by a microphone; the surrounding sound signals collected in real time are converted into surrounding sound digital signals by an A/D converter; the surrounding sound digital signals are analyzed and processed by a digital signal processor to obtain an analysis and process result about whether the abnormal sound signal exists in the surrounding; when the analysis and process result that the abnormal sound signal exists in the surrounding is obtained, an application processor performs abnormal processing control. According to the method and the portable mobile device, the possibility of prompting the user to pay attention to the surrounding can be provided.
Description
Technical field
The present invention relates to mobile device applied technical field, particularly relate to a kind of method for supervising based on portable mobile apparatus surrounding environment sound and portable mobile apparatus.
Background technology
Along with popularizing fast of handheld mobile device, and user strengthens further for terminal equipment intelligent requirements, make the more intelligent fool more of handheld mobile device, and more press close to the use habit of real-life, but thing followed safety factor also there will be.
Portable mobile apparatus, multimedia function is become better and better, and uses earphone to listen to the music, see TV, make a phone call, has become the custom of user.Interesting to listen to music and excellent video, and with in relatives and friends' communication process, owing to too dropping into, easily divert one's attention and ignore periphery complicated situation and precipitate situation, may make user be in jeopardy or in emergency like this.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of method for supervising based on portable mobile apparatus surrounding environment sound and portable mobile apparatus, can provide possibility for call user's attention surrounding environment.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of method for supervising based on portable mobile apparatus surrounding environment sound, comprising: portable mobile apparatus is by microphone real-time collecting surrounding environment voice signal; The surrounding environment voice signal of described real-time collecting is converted to the digital signal of surrounding environment sound by analog to digital converter; Analyzing and processing is carried out, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal by the digital signal of digital signal processor to described surrounding environment sound; When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.
Wherein, the described step by microphone real-time collecting surrounding environment voice signal, comprising: by Micro Electro Mechanical System microphone real-time collecting surrounding environment voice signal.
Wherein, describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound, to obtain the step whether surrounding environment exists the analysis processing result of abnormal sound signal, comprising: describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound; When in described analysis processing result, sound pressure level difference exceeds predetermined sound pressure level difference scope, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, described predetermined sound pressure level difference scope is 40 decibels to 60 decibels.
Wherein, describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound, to obtain the step whether surrounding environment exists the analysis processing result of abnormal sound signal, comprising: describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound; When sound pressure level difference in described analysis processing result exceed predetermined sound pressure level difference scope, frequency bandwidth there are suddenly high-frequency range data time, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, described predetermined sound pressure level difference scope is 40 decibels to 60 decibels, described high-frequency range be 10 hertz to 20 KHz.
Wherein, described when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, the step of abnormality processing control is carried out by application processor, comprise: when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control vibrator or acoustical generator with the form call user's attention safety of vibration or sound by application processor; Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control ongoing multimedia application by application processor and suspend, with call user's attention safety; Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controlled the management of power-supply system by application processor, to make power supply power consumption in predetermined power consumption range.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of portable mobile apparatus, and described equipment comprises: microphone, for real-time collecting surrounding environment voice signal; Analog to digital converter, is connected with described microphone, for the surrounding environment voice signal of described real-time collecting being converted to the digital signal of surrounding environment sound; Digital signal processor, is connected with described analog to digital converter, for carrying out analyzing and processing to the digital signal of described surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal; Application processor, is connected with described digital signal processor, for when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carries out abnormality processing control.
Wherein, described microphone is Micro Electro Mechanical System microphone.
Wherein, described digital signal processor is connected by I2S interface or SLIMBus interface with described analog to digital converter.
Wherein, described digital signal processor is specifically for carrying out analyzing and processing to the digital signal of described surrounding environment sound; When in described analysis processing result, sound pressure level difference exceeds predetermined sound pressure level difference scope, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, described predetermined sound pressure level difference scope is 40 decibels to 60 decibels.
Wherein, described application processor, specifically for when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controls vibrator or acoustical generator with the form call user's attention safety of vibration or sound; Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control ongoing multimedia application and suspend, with call user's attention safety; Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control the management of power-supply system, to make power supply power consumption in predetermined power consumption range.
The invention has the beneficial effects as follows: the situation being different from prior art, portable mobile apparatus of the present invention is by microphone real-time collecting surrounding environment voice signal; The surrounding environment voice signal of real-time collecting is converted to the digital signal of surrounding environment sound by analog to digital converter; By digital signal processor, analyzing and processing is carried out to the digital signal of surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal; When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.Owing to carrying out analyzing and processing to the surrounding environment voice signal of real-time collecting by DSP, when surrounding environment exists abnormal sound signal, carry out abnormality processing control, in this way, possibility can be provided for call user's attention surrounding environment.
Accompanying drawing explanation
Fig. 1 is the flow chart of method for supervising one execution mode that the present invention is based on portable mobile apparatus surrounding environment sound;
Fig. 2 is the flow chart of another execution mode of method for supervising that the present invention is based on portable mobile apparatus surrounding environment sound;
Fig. 3 is the flow chart of the another execution mode of method for supervising that the present invention is based on portable mobile apparatus surrounding environment sound;
Fig. 4 is the structural representation of portable mobile apparatus one execution mode of the present invention;
Fig. 5 is the structural representation of a MEMS microphone in portable mobile apparatus of the present invention.
Embodiment
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Consult Fig. 1, Fig. 1 is the flow chart of method for supervising one execution mode that the present invention is based on portable mobile apparatus surrounding environment sound, comprising:
Step S101: portable mobile apparatus is by microphone real-time collecting surrounding environment voice signal.
Surrounding environment comprises a lot of sound, such as: the ambient noise such as voice, tucket, brake voice sound of people.By microphone real-time collecting surrounding environment voice signal, so that carry out analyzing and processing, determine whether there is abnormal sound.
Step S102: the digital signal surrounding environment voice signal of real-time collecting being converted to surrounding environment sound by analog to digital converter.
Analog to digital converter and A/D converter, or be called for short ADC, typically referring to analog-signal transitions is the electronic component of digital signal.
The voice signal of the surrounding environment of microphone real-time collecting is analog signal, for the ease of analyzing and processing, by analog to digital converter, the surrounding environment voice signal of real-time collecting is converted to the digital signal of surrounding environment sound.
Step S103: carry out analyzing and processing to the digital signal of surrounding environment sound by digital signal processor, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal.
Digital signal processor (Digital Signal Processor, is abbreviated as DSP) be with logical circuit to audiovisual digital signal carry out reprocess process professional component, be one be referred to as noun, comprise digital effecter, EQ, 3D around etc.Digital signal processor is the special chip carrying out Digital Signal Processing, is the new unit produced along with the development of microelectronics, Digital Signal Processing, computer technology.The algorithm of DSP has multiple, in embodiments of the present invention, can be built in DSP by noise processing algorithm in advance.
By digital signal processor, analyzing and processing is carried out to the digital signal of surrounding environment sound, can determine from the analysis processing result obtained whether surrounding environment exists abnormal sound signal.
Step S104: when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.
Application processor be entirely named as multimedia application processor (Multimedia ApplicationProcessor, is abbreviated as MAP).Application processor is the very lagre scale integrated circuit (VLSIC) expanding audio frequency and video function and special purpose interface on the basis of low power consumption CPU.Application processor grows up with smart mobile phone, is at present to appear in smart mobile phone with the status of coprocessor.
When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor, thus possibility can be provided for call user's attention surrounding environment.
Embodiment of the present invention portable mobile apparatus is by microphone real-time collecting surrounding environment voice signal; The surrounding environment voice signal of real-time collecting is converted to the digital signal of surrounding environment sound by analog to digital converter; By digital signal processor, analyzing and processing is carried out to the digital signal of surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal; When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.Owing to carrying out analyzing and processing to the surrounding environment voice signal of real-time collecting by DSP, when surrounding environment exists abnormal sound signal, carry out abnormality processing control, in this way, possibility can be provided for call user's attention surrounding environment.
Consult Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 is the flow chart of another two execution modes of method for supervising that the present invention is based on portable mobile apparatus surrounding environment sound, these two execution modes are substantially identical with the execution mode of Fig. 1, and something in common refers to Fig. 1 and corresponding explanatory note, and the method comprises:
Step S201: portable mobile apparatus is by Micro Electro Mechanical System microphone real-time collecting surrounding environment voice signal.
Micro Electro Mechanical System (Micro Electro Mechanical System, be abbreviated as MEMS) microphone, it can reach high s/n ratio (Signal to Noise Ratio in low-power consumption mode, SNR), this device adopts Low-power Technology, start when can realize normal, monitor (Always On at any time, Always Listening), its power consumption can lower than the design using conventional microphone collocation Analogue-to-digital Converter (ADC) (Analog-to-Digital Converter, is abbreviated as ADC).MEMS microphone not only has battery durable power for more time, the performance of better tonequality, ultra-wideband (Superwide-band) technology, excellent coupling sensitivity, best radio frequency rejection ability, also has multiple using forestland (as dormancy, low-power consumption, mode standard etc.).In addition, even if (as party and competitive sports) use in various noisy environment, MEMS microphone still can carry out accurate speech recognition.
Step S202: the digital signal surrounding environment voice signal of real-time collecting being converted to surrounding environment sound by analog to digital converter.
Step S203: carry out analyzing and processing to the digital signal of surrounding environment sound by digital signal processor, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal.
Wherein, step S203 specifically comprises: sub-step S203a and sub-step S203b.
Sub-step S203a: analyzing and processing is carried out to the digital signal of surrounding environment sound by digital signal processor.
Sub-step S203b: when sound pressure level difference in analysis processing result exceeds predetermined sound pressure level difference scope, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, predetermined sound pressure level difference scope is 40 decibels to 60 decibels.
Further, sub-step S203b is specifically as follows: when sound pressure level difference in analysis processing result exceed predetermined sound pressure level difference scope, frequency bandwidth there are suddenly high-frequency range data time, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, predetermined sound pressure level difference scope is 40 decibels to 60 decibels, high-frequency range be 10 hertz to 20 KHz.
In advance noise treatment algorithm is built in digital signal processor, surrounding environment sound (comprising ambient external noise and voice) is analyzed, according to the different characteristics of surrounding environment sound, real-time listening surrounding environment sound, by making analysis judgement to tiny sound or for the change of emergent, abnormal voice signal, finally by comparison data, monitor out abnormal sound and which kind of belongs to, finally provide conclusion and draw to be in what environment at present.
When resolving surrounding environment sound, constantly form database at Real-time Collection, comprise the phase difference of data-signal, amplitude, sound pressure level difference and frequency range etc.When discovery Wave anomaly, with data before by very large difference, such as: sound pressure level difference exceedes predetermined sound pressure level difference (40 decibels to 60 decibels), then think to there is abnormal sound signal in surrounding environment.Further, when sound pressure level difference exceedes predetermined sound pressure level difference (40 decibels to 60 decibels), when high-frequency range (10 hertz to 20 KHz) data appear suddenly in frequency bandwidth, more confirm to there is abnormal sound signal in surrounding environment.Certainly, in actual applications, predetermined sound pressure level difference and high-frequency range can set separately, and the parameter compared, except sound pressure level difference, frequency bandwidth, can also be chosen other parameter, no longer limit at this.
Step S204: when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.
Wherein, step S204 can comprise: sub-step S204a, sub-step S204b or sub-step S204c, or sub-step S204a, sub-step S204b, sub-step S204c comprise at least two sub-steps wherein simultaneously.
Sub-step S204a: when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controls vibrator or acoustical generator with the form call user's attention safety of vibration or sound by application processor.
Or sub-step S204b: when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controls ongoing multimedia application by application processor and suspends, with call user's attention safety.
Or, sub-step S204c: when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controlled the management of power-supply system by application processor, to make power supply power consumption in predetermined power consumption range.
Embodiment of the present invention portable mobile apparatus is by microphone real-time collecting surrounding environment voice signal; The surrounding environment voice signal of real-time collecting is converted to the digital signal of surrounding environment sound by analog to digital converter; By digital signal processor, analyzing and processing is carried out to the digital signal of surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal; When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.Owing to carrying out analyzing and processing to the surrounding environment voice signal of real-time collecting by DSP, when surrounding environment exists abnormal sound signal, carry out abnormality processing control, in this way, possibility can be provided for call user's attention surrounding environment.In addition, controlled by concrete abnormality processing, can call user's attention surrounding environment or guarantee user and note surrounding environment.
Consult Fig. 4, Fig. 4 is the structural representation of portable mobile apparatus one execution mode of the present invention, and this equipment comprises: microphone 101, analog to digital converter 102, digital signal processor 103 and application processor 104.
Microphone 101 is for real-time collecting surrounding environment voice signal.
Surrounding environment comprises a lot of sound, such as: the ambient noise such as voice, tucket, brake voice sound of people.By microphone real-time collecting surrounding environment voice signal, so that carry out analyzing and processing, determine whether there is abnormal sound.
Wherein, microphone 101 is Micro Electro Mechanical System microphone.
MEMS microphone, it can reach high s/n ratio in low-power consumption mode, and this device adopts Low-power Technology, starts, monitors at any time when can realize normal, and its power consumption can lower than the design using conventional microphone collocation Analogue-to-digital Converter (ADC).MEMS microphone not only has battery durable power for more time, the performance of better tonequality, super wide frequency technology, excellent coupling sensitivity, best radio frequency rejection ability, also has multiple using forestland (as dormancy, low-power consumption, mode standard etc.).In addition, even if (as party and competitive sports) use in various noisy environment, MEMS microphone still can carry out accurate speech recognition.
As shown in Figure 5, in one embodiment, the MEMS microphone of four digital interfaces 1,2,3,4 obtains surroundings outside voice signal, wherein, two MEMS microphone are respectively installed in top and bottom, can collect surroundings outside voice signal in maximum magnitude ground.Because this MEMS microphone supports full frequency band 20HZ-20KHZ, part infrasound and supersonic band, by to the high sensitivity of low frequency signal and the high s/n ratio of high-frequency signal, more obtain sound that the more people's ear around except voice can hear, microvibration, people's ear are not easy the voice signal realized, input is close to real peripheral environment sound most possibly.
Analog to digital converter 102 is connected with microphone 101, for the surrounding environment voice signal of real-time collecting being converted to the digital signal of surrounding environment sound.
Analog to digital converter and A/D converter, or be called for short ADC, typically referring to analog-signal transitions is the electronic component of digital signal.
The voice signal of the surrounding environment of microphone real-time collecting is analog signal, for the ease of analyzing and processing, by analog to digital converter, the surrounding environment voice signal of real-time collecting is converted to the digital signal of surrounding environment sound.
Wherein, digital signal processor 103 is connected by I2S interface or SLIMBus interface with analog to digital converter 102.
Analog to digital converter 102 provides analog input interface and audio digital signals output interface, the special audio digital signal output interface be connected with digital signal processor, support two kinds of high speed audio transfer bus interface I2S and SLIMBus interface, this interface can provide higher bandwidth to support audio signal data, transfer of data more at a high speed, is convenient to connect peripheral components.
Digital signal processor 103 is connected with analog to digital converter 102, for carrying out analyzing and processing to the digital signal of surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal.
Digital signal processor (Digital Signal Processor, is abbreviated as DSP) be with logical circuit to audiovisual digital signal carry out reprocess process professional component, be one be referred to as noun, comprise digital effecter, EQ, 3D around etc.Digital signal processor is the special chip carrying out Digital Signal Processing, is the new unit produced along with the development of microelectronics, Digital Signal Processing, computer technology.The algorithm of DSP has multiple, in embodiments of the present invention, can be built in DSP by noise processing algorithm in advance.
By digital signal processor, analyzing and processing is carried out to the digital signal of surrounding environment sound, can determine from the analysis processing result obtained whether surrounding environment exists abnormal sound signal.
Digital signal processor 103 is specifically for carrying out analyzing and processing to the digital signal of surrounding environment sound; When sound pressure level difference in analysis processing result exceeds predetermined sound pressure level difference scope, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, predetermined sound pressure level difference scope is 40 decibels to 60 decibels.Further, digital signal processor 103 is specifically for carrying out analyzing and processing to the digital signal of surrounding environment sound; When sound pressure level difference in analysis processing result exceed predetermined sound pressure level difference scope, frequency bandwidth there are suddenly high-frequency range data time, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, predetermined sound pressure level difference scope is 40 decibels to 60 decibels, high-frequency range be 10 hertz to 20 KHz.
Application processor 104 is connected with digital signal processor, for when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carries out abnormality processing control.
Application processor be entirely named as multimedia application processor (Multimedia ApplicationProcessor, is abbreviated as MAP).Application processor is the very lagre scale integrated circuit (VLSIC) expanding audio frequency and video function and special purpose interface on the basis of low power consumption CPU.Application processor grows up with smart mobile phone, is at present to appear in smart mobile phone with the status of coprocessor.
When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor, thus possibility can be provided for call user's attention surrounding environment.
Application processor 104, specifically for when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controls vibrator or acoustical generator with the form call user's attention safety of vibration or sound;
Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control ongoing multimedia application and suspend, with call user's attention safety;
Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control the management of power-supply system, to make power supply power consumption in predetermined power consumption range.
Embodiment of the present invention portable mobile apparatus is by microphone real-time collecting surrounding environment voice signal; The surrounding environment voice signal of real-time collecting is converted to the digital signal of surrounding environment sound by analog to digital converter; By digital signal processor, analyzing and processing is carried out to the digital signal of surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal; When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.Owing to carrying out analyzing and processing to the surrounding environment voice signal of real-time collecting by DSP, when surrounding environment exists abnormal sound signal, carry out abnormality processing control, in this way, possibility can be provided for call user's attention surrounding environment.In addition, controlled by concrete abnormality processing, can call user's attention surrounding environment or guarantee user and note surrounding environment.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. based on a method for supervising for portable mobile apparatus surrounding environment sound, it is characterized in that, described method comprises:
Portable mobile apparatus is by microphone real-time collecting surrounding environment voice signal;
The surrounding environment voice signal of described real-time collecting is converted to the digital signal of surrounding environment sound by analog to digital converter;
Analyzing and processing is carried out, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal by the digital signal of digital signal processor to described surrounding environment sound;
When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carry out abnormality processing control by application processor.
2. method according to claim 1, it is characterized in that, described portable mobile apparatus, by the step of microphone real-time collecting surrounding environment voice signal, comprising: described portable mobile apparatus is by Micro Electro Mechanical System microphone real-time collecting surrounding environment voice signal.
3. method according to claim 1, it is characterized in that, describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound, to obtain the step whether surrounding environment exists the analysis processing result of abnormal sound signal, comprising:
Describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound;
When in described analysis processing result, sound pressure level difference exceeds predetermined sound pressure level difference scope, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, described predetermined sound pressure level difference scope is 40 decibels to 60 decibels.
4. method according to claim 3, it is characterized in that, describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound, to obtain the step whether surrounding environment exists the analysis processing result of abnormal sound signal, comprising:
Describedly carry out analyzing and processing by the digital signal of digital signal processor to described surrounding environment sound;
When sound pressure level difference in described analysis processing result exceed predetermined sound pressure level difference scope, frequency bandwidth there are suddenly high-frequency range data time, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, described predetermined sound pressure level difference scope is 40 decibels to 60 decibels, described high-frequency range be 10 hertz to 20 KHz.
5. method according to claim 1, is characterized in that, described when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, is carried out the step of abnormality processing control, comprising by application processor:
When obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control vibrator or acoustical generator with the form call user's attention safety of vibration or sound by application processor;
Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control ongoing multimedia application by application processor and suspend, with call user's attention safety;
Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controlled the management of power-supply system by application processor, to make power supply power consumption in predetermined power consumption range.
6. a portable mobile apparatus, is characterized in that, described equipment comprises:
Microphone, for real-time collecting surrounding environment voice signal;
Analog to digital converter, is connected with described microphone, for the surrounding environment voice signal of described real-time collecting being converted to the digital signal of surrounding environment sound;
Digital signal processor, is connected with described analog to digital converter, for carrying out analyzing and processing to the digital signal of described surrounding environment sound, to obtain the analysis processing result whether surrounding environment exists abnormal sound signal;
Application processor, is connected with described digital signal processor, for when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, carries out abnormality processing control.
7. equipment according to claim 6, is characterized in that, described microphone is Micro Electro Mechanical System microphone.
8. equipment according to claim 6, is characterized in that, described digital signal processor is connected by I2S interface or SLIMBus interface with described analog to digital converter.
9. equipment according to claim 6, is characterized in that, described digital signal processor is specifically for carrying out analyzing and processing to the digital signal of described surrounding environment sound; When in described analysis processing result, sound pressure level difference exceeds predetermined sound pressure level difference scope, obtain the analysis processing result that there is abnormal sound signal in surrounding environment, wherein, described predetermined sound pressure level difference scope is 40 decibels to 60 decibels.
10. equipment according to claim 6, is characterized in that,
Described application processor, specifically for when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, controls vibrator or acoustical generator with the form call user's attention safety of vibration or sound;
Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control ongoing multimedia application and suspend, with call user's attention safety;
Or, when obtaining surrounding environment and there is the analysis processing result of abnormal sound signal, control the management of power-supply system, to make power supply power consumption in predetermined power consumption range.
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Application publication date: 20150513 |