CN102774321B - Vehicle-mounted system and sound control method thereof - Google Patents
Vehicle-mounted system and sound control method thereof Download PDFInfo
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Abstract
The invention discloses a vehicle-mounted system and a sound control method thereof. The sound control method comprises the following steps of: intercepting, namely intercepting whether the sound is to be output by more than two threads in the vehicle-mounted system; judging, namely judging whether a specified thread exists in the more than two threads when the sound is to be output by more than two threads in the vehicle-mounted system; sound adjusting and mixing, namely performing sound mixing processing on the sound which is to be output by more than two threads after the volume level value of the sound to be output on other threads except the specified thread refers to a volume value smaller than the volume of the sound to be output on the specified thread if the judgment result is yes; and sound outputting, namely outputting the sound based on the sound data obtained by the sound mixing processing. The sound interference among multiple different vehicle-mounted systems can be avoided as much as possible.
Description
Technical field
The present invention relates to a kind of information system being applied on automobile or similar tool movement, relate in particular to a kind of onboard system and audio control method thereof.
Background technology
Automobile has had the history of more than 100 year as people's the daily vehicle, during this period along with scientific and technological development, automobile has also experienced variation with rapid changepl. never-ending changes and improvements.The various advantages of automobile make automobile obviously improve the mankind's life.Information techenology is to the deep infiltration of every field at any time, and various onboard systems are also born thereupon.
Onboard system has comprised vehicle-mounted monitoring subsystem, vehicle GPS subsystem, vehicle-mounted audio/video subsystem (MP3, MP4, DVD etc.), on-vehicle Bluetooth subsystem etc.Even vehicle-mounted computer and in-car TV are unrare yet.
But, the hardware resource such as electric power and space in car is limited, how to make better the resource sharing of can trying one's best of these onboard systems, save limited hardware resource, and how to avoid numerous different vehicle-mounted between phase mutual interference (for example, acoustic noises etc.), become a technical matters urgently to be resolved hurrily.
Summary of the invention
One of technical matters to be solved by this invention is that a kind of onboard system and the audio control method thereof that can as far as possible avoid the acoustic noises between multiple different onboard system need to be provided.
In order to solve the problems of the technologies described above, the invention provides a kind of audio control method of onboard system.The method comprises:
Intercept step, intercept described onboard system and whether exist more than two thread to be about to output sound;
Determining step, exists more than two thread to be about to output sound if listen in described onboard system, judges the described given thread that more than two whether exists in thread;
Sound is adjusted and audio mixing step, if the determination result is YES, make the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output be represent that volume is about to value that the volume of sound of output is little than described given thread after, then the sound that described more than two thread is about to output is carried out to stereo process;
Voice output step, the voice data output sound based on obtaining by stereo process.
The thread of the vehicle mounted guidance subsystem that further, described given thread is described onboard system.
Further, in described sound adjustment and audio mixing step, if the determination result is YES, the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, the sound in the sound that described more than two thread to be ready exporting except the sound that the thread of on-vehicle Bluetooth subsystem will be exported carries out stereo process; In voice output step, there is the sound that the thread of on-vehicle Bluetooth subsystem will export in described more than two thread is about to the sound of output time, the sound that the thread of the voice data based on obtaining by stereo process and on-vehicle Bluetooth subsystem will be exported carrys out output sound.
Further, described sound adjustment and audio mixing step comprise:
The level of sound volume that keeps described given thread to be about to the sound of output is worth in constant situation, make the level of sound volume value of the described sound that more than two in thread, other thread except described given thread will just be exported be adjusted into expression volume than the just little level of sound volume value of volume of the sound of output of described given thread, and then the sound that described more than two thread will just be exported carry out stereo process;
Or, the level of sound volume that keeps described given thread to be about to the sound of output is worth in constant situation, the level of sound volume value of the sound that described in making, other thread will just be exported is adjusted into and represents quiet level of sound volume value, and then the sound that described more than two thread to be ready exporting carries out stereo process;
Or, in the case of by described given thread, just the level of sound volume value of the sound of output will be heightened, the level of sound volume value of the sound that described in making, other thread will just be exported is adjusted into the low value of level of sound volume value that is about to the sound of output than described given thread, and then the sound that described more than two thread will just be exported carries out stereo process.
Further, the method also comprises: in the time that described given thread voice output finishes, the level of sound volume value that makes described other thread be about to the sound of output reverts to respectively the value before each self aligning.
Further, the operating system of described onboard system is Android operating system, wherein, described in intercept step and comprise: whether exist more than two IAudioTrack object to determine whether to exist more than two thread to be about to output sound by searching.
Further, in the AudioTrack method of the Android of described onboard system operating system, thread mark is set, described thread mark represents whether AudioTrack object is created by described given thread, and describedly judge that the described step of given thread that more than two whether exists in thread comprises: be the IAudioTrack object being created by described given thread if exist thread mark to represent in the IAudioTrack object that in the described onboard system finding, each thread creates, more than two in thread, there is given thread in what be judged as the each IAudioTrack of establishment.
Further, described in, making the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output is to represent that volume is about to the level of sound volume value that the volume of sound of output is little processing than described given thread comprises: the level of sound volume value that makes to create the IAudioTrack object except the IAudioTrack object being created by described given thread in each AudioTrack object is adjusted into and represents that volume is than the little value of volume of the IAudioTrack object being created by described given thread.
According to a further aspect of the invention, also provide a kind of onboard system.This onboard system comprises:
Intercept module, whether exist more than two thread to be about to output sound for intercepting described onboard system;
Judge module, for existing more than two and to judge the described given thread that more than two whether exists in thread when thread is about to output sound listening to described onboard system;
Sound is adjusted and audio mixing module, for in judged result when being, make the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output be represent that volume is about to value that the volume of sound of output is little than described given thread after, then the sound that described more than two thread is about to output is carried out to stereo process;
Voice output module, the voice data output sound based on obtaining by stereo process.
Further, described sound adjusting module in judged result when being, the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, the sound in the sound that described more than two thread to be ready exporting except the sound that the thread of on-vehicle Bluetooth subsystem will be exported carries out stereo process; When described voice output module exists for be about to the sound of output at described more than two thread the sound that the thread of on-vehicle Bluetooth subsystem will export, the sound that the thread of the voice data based on obtaining by stereo process and on-vehicle Bluetooth subsystem will be exported carrys out output sound.
Compared with prior art, one or more embodiment of the present invention can have the following advantages by tool: by intercepting the output sound that whether is about to of onboard system, and before carrying out stereo process, make the level of sound volume value of the sound that in each thread that is about to output sound, other thread except this given thread will just be exported be adjusted into expression volume than the just little level of sound volume value of volume of the sound of output of this given thread, the sound that can make onboard system can intelligently user in muli-sounds be expected to emphasis is not heard is exported with higher volume.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification sheets, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in specification sheets, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets,, is not construed as limiting the invention jointly for explaining the present invention with embodiments of the invention.In the accompanying drawings:
Fig. 1 is according to the schematic flow sheet of the audio control method of the onboard system of first embodiment of the invention;
Fig. 2 is according to the schematic flow sheet of the audio control method of the onboard system of the employing Android operating system of second embodiment of the invention;
Fig. 3 is according to the structural representation of the onboard system of third embodiment of the invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application engineering means solve technical matters whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each feature in each embodiment and each embodiment in the present invention can mutually combine, and the technical scheme forming is all within protection scope of the present invention.
In addition, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the diagram of circuit of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
The first embodiment
Each step of the audio control method of the onboard system of the present embodiment is described below with reference to Fig. 1.
Whether step S110, intercept in onboard system and exist more than two thread of each onboard subsystem such as on-vehicle Bluetooth, vehicle-mounted music, vehicle-carrying DVD (digital versatile disc) to be about to output sound.
Step S120, exists more than two thread of each onboard subsystem to be about to output sound (that is to say this more than two thread will export at one time the sound that will export separately) in onboard system if listen to, just need to carry out stereo process.And in the present embodiment, before carrying out stereo process, first judge the given thread such as whether this more than two exists the vehicle mounted guidance subsystem of such as global positioning system (GPS) thread in thread.
Step S130, if the judged result in step S120 is yes, this level of sound volume value of sound that more than two in thread, other thread except this given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, then the sound that described more than two thread to be ready exporting carries out stereo process; Preferably, if the judged result in step S120 is yes, this level of sound volume value of sound that more than two in thread, other thread except this given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, the sound in the sound that this more than two thread to be ready exporting except the sound that the thread of on-vehicle Bluetooth subsystem will be exported carries out stereo process.
Step S140, the voice data output sound based on obtaining by stereo process.The sound that like this, can make onboard system can intelligently user in muli-sounds be expected to emphasis is not heard is exported with higher volume.Preferably, there is the sound that the thread of on-vehicle Bluetooth subsystem will export in this more than two thread is about to the sound of output time, the sound that the thread of the voice data based on obtaining by stereo process and on-vehicle Bluetooth subsystem will be exported carrys out output sound.
In addition, also can comprise step S150, in the time that this given thread voice output finishes, the level of sound volume value that makes other thread be about to the sound of output reverts to respectively the value before each self aligning.
Further describe the processing of step S110 below.In the present embodiment, this onboard system is preferably and adopts Android operating system to realize, and now, this onboard system is the intelligence computation platform of realizing based on Android operating system.This intelligence computation platform platform based on Android operating system can access various sound source subsystem, such as MP3 subsystem, MP4 subsystem, DVD subsystem, on-vehicle Bluetooth subsystem, vehicle mounted guidance subsystem and iPod subsystem etc.
In the time that at least two subsystems in these subsystems need at one time output sound, mean and have two different sub-systems will export at one time voice data separately, therefore, before output (broadcasting) sound, need to carry out stereo process, export again after being treated to a voice data with each voice data that will export at one time.
But, if only simply each voice data is directly mixed into a voice data as conventional art, and will cause because of each sound phase mutual interference, cannot give prominence to the key points may be to the very important acoustic information of user.For example, in the time that user listens to the music, the phone sounding of navigationsystem or on-vehicle Bluetooth.Now, user very likely wishes to receive calls or listen to the sound that navigationsystem produces.But because the sound of music in conventional art can not diminish because of phone or navigation sounding event, therefore, in conventional art, music probably will become interference tones, cause user cannot not hear the desired telephone speech of listening or navigation sound.
The present inventor has noticed the problems referred to above, therefore, in step S120, exist more than two thread of each onboard subsystem to be about to output sound if listen in onboard system, judge the given thread such as the thread of this vehicle mounted guidance subsystem that more than two whether has such as global positioning system (GPS) in thread or the thread of on-vehicle Bluetooth call subsystem.Like this, be convenient to the voice data differentiated treatment that the follow-up voice data that the thread of the thread of vehicle mounted guidance subsystem or on-vehicle Bluetooth call subsystem is produced and other subsystem produce.
Then describe step S130 in detail.If the judged result in step S120 is yes, that is, judge this and more than two in thread, have given thread, be to represent that volume is about to the little value of volume of the sound of output than this given thread in the level of sound volume value that makes this sound that more than two in thread, other thread except this given thread will just be exported, then, then by described more than two thread be about to output sound carry out stereo process.Like this, in the voice data that can make to obtain through stereo process, the volume of the sound of subsystem under given thread (as vehicle mounted guidance subsystem etc.) can be larger than the volume of the sound of other subsystem, thereby make user can catch the sound that the subsystem under given thread sends.
Be to represent that volume is about to the little value of volume of the sound of output than this given thread, can have multiple processing mode in order to make the level of sound volume value of this sound that more than two in thread, other thread except this given thread will just be exported.
For example, the level of sound volume that can keep given thread to be about to the sound of output is worth in constant situation, make the level of sound volume value of this sound that more than two in thread, other thread except given thread will just be exported be adjusted into expression volume than the just little value of volume of the sound of output of given thread, and then the sound that this more than two thread will just be exported carry out stereo process.For another example, can in the case of the level of sound volume of sound that keeps given thread to be about to output be worth constant, the level of sound volume value that makes other thread be about to the sound of output is adjusted into and represents quiet level of sound volume value, and then the sound that this more than two thread to be ready exporting carries out stereo process; And for example, can also be in the case of by given thread, just the level of sound volume value of the sound of output be heightened, the level of sound volume value of sound that makes other thread be about to output is adjusted into the low value of level of sound volume value that is about to the sound of output than given thread, and then the sound that this more than two thread is about to output is carried out to stereo process.
Finally, the voice data output sound based on obtaining by stereo process in step S140.
The second embodiment
Illustrate according to each step of the audio control method of the onboard system of the employing Android operating system of second embodiment of the invention below with reference to Fig. 2.For the convenience of explanation, the processing identical with the first embodiment cardinal principle, adopts the Reference numeral identical with the first embodiment.
Step S210, intercepts and whether exists two of onboard system above (containing two, in full with) thread and be about to output sound by searching IAudioTrack object that in onboard system, each thread creates.
More specifically, this onboard system has adopted Android operating system as its operating system, accesses the subsystems such as each such as MP4 subsystem, DVD subsystem, on-vehicle Bluetooth subsystem, vehicle mounted guidance subsystem by Android operating system.Subsystems, in the time wanting output sound, can create IAudioTrack object by computing machine thread.Therefore, whether exist two above (containing two, same in full) threads to be about to output sound by searching can the intercepting of IAudioTrack object that in onboard system, each thread creates.
Step S220, exist by more than two different threads and create IAudioTrack object if listen to, just confirming as in onboard system exists more than two thread of each onboard subsystem to be about to output sound, then, judge the given thread that creates the thread etc. that whether has such as GPS navigation system creation in the thread of these IAudioTrack objects.
For example, can be simply identify by creating the title of each thread of these IAudioTrack objects or a part for title whether the thread that creates these IAudioTrack objects is given thread.
Preferably, can in the AudioTrack method of the Android of onboard system operating system, thread mark be set.This thread mark represents whether AudioTrack object is created by described given thread.Like this, can judge like this in the thread that creates these AudioTrack and whether have given thread: be the IAudioTrack object being created by given thread if exist thread mark to represent in the IAudioTrack object that in the onboard system finding, each thread creates, judged result is yes, create in the thread (corresponding to more than two thread in step S120) of these AudioTrack and have given thread, otherwise, judged result is no, creates in the thread of these AudioTrack and does not have given thread.Thread mark represents it is the sound that sound that the IAudioTrack object that created by given thread will be exported is given thread and is about to output.
Step S230, if the judged result in step S220 is yes, after the level of sound volume value of the IAudioTrack object the IAudioTrack object being created by given thread except this in making to create these AudioTrack objects is adjusted into and represents that volume is than the little value of the volume of the IAudioTrack object being created by given thread, then the sound that each AudioTrack object to be ready exporting carries out stereo process;
As described in Figure 2, the processing after step S230 is substantially identical with the first embodiment, as long as carry out respective handling for the output mechanism of Android operating system, carries out no longer in detail explanation.
The 3rd embodiment
Below with reference to Fig. 3, the onboard system according to the present embodiment is described.
Comprise and intercept module 10, judge module 20, sound adjustment and audio mixing module 30, voice output module 40, sound recovery module 50 according to the onboard system of the present embodiment.
Whether intercept module 10 exists more than two thread of each onboard subsystem such as on-vehicle Bluetooth, vehicle-mounted music, vehicle-carrying DVD (digital versatile disc) to be about to output sound for intercepting onboard system.
Judge module 20 for listen to onboard system exist each onboard subsystem it is more than two that thread is about to output sound time, first judge the given thread such as whether this more than two exists the vehicle mounted guidance subsystem of such as global positioning system (GPS) thread in thread.
Sound adjustment and audio mixing module 30 in the judged result of judge module 20 when being, this level of sound volume value of sound that more than two in thread, other thread except this given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, then the sound that described more than two thread to be ready exporting carries out stereo process; Preferably, for after being adjusted in the level of sound volume value of sound that makes this more than two thread other thread except this given thread be about to output and representing that volume is about to value that the volume of sound of output is little than this given thread, then in the sound that described more than two thread to be ready exporting, the sound except the sound that the thread of on-vehicle Bluetooth subsystem will be exported carries out stereo process.
Voice output module 40 is for the voice data output sound based on obtaining by stereo process.The sound that like this, can make onboard system can intelligently user in muli-sounds be expected to emphasis is not heard is exported with higher volume.Preferably, voice output module 40 sound that the thread of the voice data based on obtaining by stereo process and on-vehicle Bluetooth subsystem will be exported in the time existing described more than two thread to have the sound that the thread of on-vehicle Bluetooth subsystem will export in being about to the sound of output carrys out output sound.
Sound recovers module 50 in the time that this given thread voice output finishes, and the level of sound volume value that makes other thread be about to the sound of output reverts to respectively the value before each self aligning.
It is above-mentioned that to intercept the processing that module 10, judge module 20, sound adjustment and audio mixing module 30, voice output module 40 and sound recovers module 50 corresponding with step S 110, S 120, S130, S140 and S150 in above-described embodiment respectively, therefore other processing of each module can be learnt in conjunction with above-described embodiment, launches no longer in detail explanation at this.
Those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general computer device, they can concentrate on single computer device, or be distributed on the network that multiple computer devices form, alternatively, they can be realized with the executable program code of computer device, thereby, they can be stored in memory storage and be carried out by computer device, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Although the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, not in order to limit the present invention.Technical personnel in any the technical field of the invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can do any amendment and variation what implement in form and in details; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (10)
1. an audio control method for onboard system, is characterized in that, comprising:
Intercept step, intercept described onboard system and whether exist more than two thread to be about to output sound;
Determining step, exists more than two thread to be about to output sound if listen in described onboard system, judges the described given thread that more than two whether exists in thread;
Sound is adjusted and audio mixing step, if the determination result is YES, make the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output be represent that volume is about to value that the volume of sound of output is little than described given thread after, then the sound that described more than two thread is about to output is carried out to stereo process;
Voice output step, based on the voice data output sound obtaining by stereo process.
2. method according to claim 1, is characterized in that, the thread of the vehicle mounted guidance subsystem that described given thread is described onboard system.
3. method according to claim 1, is characterized in that:
In described sound adjustment and audio mixing step, if the determination result is YES, the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, the sound in the sound that described more than two thread to be ready exporting except the sound that the thread of on-vehicle Bluetooth subsystem will be exported carries out stereo process;
In voice output step, there is the sound that the thread of on-vehicle Bluetooth subsystem will export in described more than two thread is about to the sound of output time, the sound that voice data based on obtaining by stereo process and the thread of on-vehicle Bluetooth subsystem will be exported carrys out output sound.
4. method according to claim 1, is characterized in that, described sound adjustment and audio mixing step comprise:
The level of sound volume that keeps described given thread to be about to the sound of output is worth in constant situation, make the level of sound volume value of the described sound that more than two in thread, other thread except described given thread will just be exported be adjusted into expression volume than the just little level of sound volume value of volume of the sound of output of described given thread, and then the sound that described more than two thread will just be exported carry out stereo process;
Or, the level of sound volume that keeps described given thread to be about to the sound of output is worth in constant situation, the level of sound volume value of the sound that described in making, other thread will just be exported is adjusted into and represents quiet level of sound volume value, and then the sound that described more than two thread to be ready exporting carries out stereo process;
Or, in the case of by described given thread, just the level of sound volume value of the sound of output will be heightened, the level of sound volume value of the sound that described in making, other thread will just be exported is adjusted into the low value of level of sound volume value that is about to the sound of output than described given thread, and then the sound that described more than two thread will just be exported carries out stereo process.
5. method according to claim 4, is characterized in that, also comprises: in the time that described given thread voice output finishes, the level of sound volume value that makes described other thread be about to the sound of output reverts to respectively the value before each self aligning.
6. according to the method described in any one in claim 1 to 5, it is characterized in that, the operating system of described onboard system is Android operating system, wherein, described in intercept step and comprise:
Whether exist more than two IAudioTrack object to determine whether to exist more than two thread to be about to output sound by searching.
7. method according to claim 6, it is characterized in that, in the AudioTrack method of the Android of described onboard system operating system, thread mark is set, described thread mark represents whether AudioTrack object is created by described given thread, and describedly judges that the described step of given thread that more than two whether exists in thread comprises:
If existing thread mark to represent in the IAudioTrack object that in the described onboard system finding, each thread creates is the IAudioTrack object being created by described given thread, more than two there is given thread in thread in what be judged as the each IAudioTrack of establishment.
8. method according to claim 7, it is characterized in that, described in to make the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output be to represent that volume is about to the level of sound volume value that the volume of sound of output is little processing than described given thread comprises:
Make the level of sound volume value that creates the IAudioTrack object except the IAudioTrack object being created by described given thread in each AudioTrack object be adjusted into expression volume than the little value of volume of the IAudioTrack object being created by described given thread.
9. an onboard system, is characterized in that, comprising:
Intercept module, whether exist more than two thread to be about to output sound for intercepting described onboard system;
Judge module, for existing more than two and to judge the described given thread that more than two whether exists in thread when thread is about to output sound listening to described onboard system;
Sound is adjusted and audio mixing module, for in judged result when being, make the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output be represent that volume is about to value that the volume of sound of output is little than described given thread after, then the sound that described more than two thread is about to output is carried out to stereo process;
Voice output module, based on the voice data output sound obtaining by stereo process.
10. system according to claim 9, is characterized in that:
Described sound adjustment and audio mixing module in judged result when being, the described level of sound volume value of sound that more than two in thread, other thread except described given thread is about to output being adjusted into represent volume is about to value that the volume of sound of output is little than this given thread after, the sound in the sound that described more than two thread to be ready exporting except the sound that the thread of on-vehicle Bluetooth subsystem will be exported carries out stereo process;
When described voice output module exists for be about to the sound of output at described more than two thread the sound that the thread of on-vehicle Bluetooth subsystem will export, the sound that voice data based on obtaining by stereo process and the thread of on-vehicle Bluetooth subsystem will be exported carrys out output sound.
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