CN105635659A - Audio processing method and apparatus for video surveillance system - Google Patents
Audio processing method and apparatus for video surveillance system Download PDFInfo
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- CN105635659A CN105635659A CN201410617915.7A CN201410617915A CN105635659A CN 105635659 A CN105635659 A CN 105635659A CN 201410617915 A CN201410617915 A CN 201410617915A CN 105635659 A CN105635659 A CN 105635659A
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Abstract
The invention discloses an audio processing method and apparatus for a video surveillance system. The audio processing method comprises the steps that a client acquires second current audio in a current environment; the client carries out mixing processing of the second current audio and first current audio received from a monitoring front-end to obtain mixed audio; and the client transmits the mixed audio to the monitoring front-end. According to the invention, the current audio of a local user and current talk back audio from the client are subjected to mixing processing at the client, and the mixed audio is transmitted to the monitoring front-end as talk back audio; in this way, the broadcast or talk back audio between the client and the monitoring front-end is included into monitoring video; and thus the monitoring audio in the monitoring video can be more comprehensive and complete, the completeness of the monitoring video in terms of evidence collection is improved and the detection rate is increased.
Description
Technical field
The present invention relates to field of video monitoring, it particularly relates to a kind of audio-frequency processing method for video monitoring system and device.
Background technology
The equipment such as front monitoring front-end PU, client CU, monitor supervision platform and video platform storage server S A are included, as it is shown in figure 1, speech talkback can be carried out by monitor supervision platform between front monitoring front-end PU and client CU in current video monitoring system.
For speech talkback, client CU can send request and set up two-way speech code stream with front monitoring front-end PU, concrete, on the one hand, front monitoring front-end PU gathers audio A 1 from the pick up of oneself, and by monitor supervision platform, A1 being sent to client CU, client CU is decoded and passes to sound equipment after receiving the front monitoring front-end PU A1 sent or earphone is play; On the other hand, client CU can gather user one's voice in speech A2 from the machine microphone, then passes through monitor supervision platform and A2 is sent to front monitoring front-end PU, and then front monitoring front-end carries out the broadcasting of A2.
So, in the prior art, as shown in Figure 1, when video platform stores server S A or platform client CU ' to front monitoring front-end PU request monitor video, the audio A 1 of the monitor video V currently gathered and front end pick up collection can be sent simultaneously to monitor supervision platform by front monitoring front-end PU, the audio A 1 of the monitor video V from front monitoring front-end received and front end pick up collection is then simultaneously sent to video platform storage server S A or platform client CU ' by monitor supervision platform, wherein, video platform storage server S A will store it in video file after receiving these audio frequency and video, thus realizing the real time record of monitoring audio/video, platform client CU ' then can realize the real-time play of the current monitor audio frequency and video to front monitoring front-end PU, in addition, monitor video V and audio A 1 also can be stored in video file by front monitoring front-end PU.
And be can be seen that by above description, be platform client CU ' the current monitor audio frequency and video play or video platform storage server S A real-time storage video file and the stored video file of front monitoring front-end PU in comprise monitoring audio frequency in all only comprise the audio A 1 under the front monitoring front-end PU local environment that front end pick up gathers, and do not comprise the audio A 2 of the speech talkback between client CU and front monitoring front-end PU or voice broadcast service, as can be seen here, monitoring audio frequency of the prior art is unilateral and incomplete, and this is undoubtedly field of video monitoring leak in the evidence collection of monitor video, and this will result in the imperfect of evidence collection, and easily make lawless person escape because of lack of evidence.
Monitoring audio frequency existing for monitor video in correlation technique is unilateral and incomplete problem, not yet proposes effective solution at present.
Summary of the invention
Monitoring audio frequency existing for monitor video in correlation technique is unilateral and incomplete problem, the present invention proposes a kind of audio-frequency processing method for video monitoring system and device, in client, the present video of local user can be carried out stereo process with the current intercommunication audio frequency from client, and mixed audio frequency is sent to front monitoring front-end as intercommunication audio frequency, so that the monitoring audio frequency in monitor video is more comprehensive and complete, improve monitor video integrity in evidence collection, improve case-solving rate.
The technical scheme is that and be achieved in that:
According to an aspect of the invention, it is provided a kind of audio-frequency processing method for video monitoring system.
This audio-frequency processing method includes:
Client gathers the second present video under current environment;
Second present video and the first present video from front monitoring front-end received are carried out stereo process by client, obtain mixed audio;
Mixed audio is sent to front monitoring front-end by client.
Wherein, the mode that the first present video and second from front monitoring front-end received currently carries out stereo process can be included at least one of by client:
Process according to predetermined Mixed Audio Algorithm and encryption algorithm;
Process according to the mode of double track.
Additionally, when front monitoring front-end is play mixed audio and receives video request, this audio-frequency processing method farther includes:
Front monitoring front-end gathers the current video under current environment;
Front monitoring front-end sends current video and mixed audio, and wherein, mixed audio is the sound accompaniment of current video.
It addition, this audio-frequency processing method farther includes:
Current video and mixed audio are processed as video record and store by front monitoring front-end, and wherein, in video record, mixed audio is the sound accompaniment of current video.
According to a further aspect in the invention, it is provided that a kind of apparatus for processing audio for video monitoring system.
This apparatus for processing audio includes:
First acquisition module, for gathering the second present video under current environment;
Mix module, for the second present video and the first present video from front monitoring front-end received are carried out stereo process, obtains mixed audio;
First sending module, for sending mixed audio to front monitoring front-end.
Wherein, the mode that the first present video and second from front monitoring front-end received currently carries out stereo process can be included at least one of by client:
Process according to predetermined Mixed Audio Algorithm and encryption algorithm;
Process according to the mode of double track.
Additionally, this apparatus for processing audio farther includes:
Second acquisition module, for when front monitoring front-end is play mixed audio and receives video request, gathering the current video under current environment;
Second sending module, is used for sending current video and mixed audio, and wherein, mixed audio is the sound accompaniment of current video.
It addition, this apparatus for processing audio farther includes:
Processing memory module, for processing current video and mixed audio for video record and storing, wherein, in video record, mixed audio is the sound accompaniment of current video.
The present invention is by carrying out stereo process by the present video of local user with the current intercommunication audio frequency from client in client, and mixed audio frequency is sent to front monitoring front-end as intercommunication audio frequency, so that the monitoring audio frequency in monitor video is more comprehensive and complete, improve monitor video integrity in evidence collection, improve case-solving rate.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the audio-frequency processing method according to prior art;
Fig. 2 is the flow chart of the audio-frequency processing method for video monitoring system according to embodiments of the present invention;
Fig. 3 is the flow chart of the audio-frequency processing method for video monitoring system according to the present invention one specific embodiment;
Fig. 4 is the block diagram of the apparatus for processing audio for video monitoring system according to embodiments of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, broadly fall into the scope of protection of the invention.
According to embodiments of the invention, it is provided that a kind of audio-frequency processing method for video monitoring system.
As in figure 2 it is shown, audio-frequency processing method according to embodiments of the present invention includes:
Step S201, client gathers the second present video under current environment;
Step S203, the second present video and the first present video from front monitoring front-end received are carried out stereo process by client, obtain mixed audio;
Step S205, mixed audio is sent to front monitoring front-end by client.
In order to be better understood from the technique scheme of the present invention, below in conjunction with Fig. 3, the technique scheme of the present invention is described in detail.
By the such scheme of the present invention, in client, the present video of local user can be carried out stereo process with the current intercommunication audio frequency from client, and mixed audio frequency is sent to front monitoring front-end as intercommunication audio frequency, so that broadcast or radio voice between client and front monitoring front-end are included in monitor video, make the monitoring audio frequency in monitor video more comprehensive and complete, improve monitor video integrity in evidence collection, improve case-solving rate.
As shown in Figure 3, under normal conditions, when there is speech talkback between front monitoring front-end PU and client CU, client CU receive through monitor supervision platform forward from after the first present video A1 of front monitoring front-end PU, A1 is then decoded and passes to sound equipment by client CU or earphone is play, client CU then also can gather user's one's voice in speech the second present video A2 from the machine microphone, then pass through monitor supervision platform and be transmitted to front monitoring front-end PU, play by front end, but audio-frequency processing method according to embodiments of the present invention, client CU is while playing out the first present video A1 of the pick up collection from front monitoring front-end PU by audio amplifier, the present video that also can be gathered by local microphone is (namely, second present video A2) carry out audio mixing with the first present video A1 of pick up collection from front monitoring front-end PU, thus obtaining mixed audio A1+2, then, this mixed audio A1+2 can be forwarded to this front monitoring front-end PU as the intercommunication audio frequency with this front monitoring front-end PU by monitor supervision platform by client CU.
So, in one embodiment, audio-frequency processing method according to embodiments of the present invention farther includes: while this front monitoring front-end PU plays this mixed audio A1+2, if receiving the video request forwarded from monitor supervision platform, the current monitor video V that so front monitoring front-end PU then will gather under current environment, and, it not that the simple A1 gathered by local pick up and current monitor video V is sent to monitor supervision platform, but the mixed audio A1+2 by current monitor video V with from client CU sends jointly to monitor supervision platform, and, mixed audio A1+2 is the sound accompaniment of current monitor video V, and then make monitor supervision platform that the current monitor video V received and mixed audio A1+2 is forwarded to the requestor of monitor video, i.e. platform client CU ' or storage server S A, so that the audio frequency and video not only comprised in the acquired monitor video of the requestor of monitor video under the current environment of front monitoring front-end PU also include the radio voice or the broadcasting speech A2 that there is the client CU of speech talkback or broadcast with it, thus improving the integrity of monitor video, and expand the monitoring range of video from the side, improve the availability of monitor video.
Wherein, in one embodiment, client CU is when carrying out stereo process by the first present video A1 and the second present video A2, can process according to predetermined Mixed Audio Algorithm and encryption algorithm, also can process according to the mode of double track, certainly also A1 and A2 can be processed by the mode that two kinds of processing modes carry out combining.
Wherein, for carrying out, according to predetermined Mixed Audio Algorithm and encryption algorithm, the mode that processes, concrete processing mode is, the second present video A2 that this locality is gathered by client CU and the first present video A1 from front monitoring front-end PU received is decoded respectively, then decoded A1 and A2 is calculated according to predetermined Mixed Audio Algorithm, finally A1 and the A2 after calculating is recoded according to predetermined encryption algorithm, thus obtaining mixed audio A1+2;
Additionally, for carrying out, according to the mode of double track, the mode that processes, concrete processing mode is, A1 and the A2 not decoded is processed two different sound channels into video according to the mode of double track by client CU respectively, thus obtaining mixed audio A1+2.
And, in the above-described embodiments, owing to the first present video A1 and the second present video A2 and current monitor video V is all current acquisition in real time, therefore, this also ensure that the temporal associativity of mixed audio A1+2 and current monitor video V from the side, namely, they all belong to sound, the video that the same time gathers, so that as mixed audio A1+2 and the current monitor video V tight association in time of current monitor video V sound accompaniment, and then ensure that the accuracy of monitor video, thus improving the availability of monitor video.
Wherein, in one embodiment, at front monitoring front-end PU, current monitor video V and mixed audio A1+2 is sent to monitor supervision platform, so that when monitor supervision platform is forwarded to video request person, if this mixed audio A1+2 is when being carried out stereo process by client CU, the processing mode adopted is according to predetermined Mixed Audio Algorithm and encryption algorithm, so, the mixed audio A1+2 after recoding is divided into two-way code stream to send jointly to monitor supervision platform as sound accompaniment and the current monitor video V of current monitor video V by front monitoring front-end PU.
And in another embodiment, when current monitor video V and mixed audio A1+2 is sent to monitor supervision platform by front monitoring front-end PU, if this mixed audio A1+2 is when being carried out stereo process by client CU, the processing mode adopted is the processing mode of double track, so, front monitoring front-end PU is then that to be processed by A1 and the A2 not decoded in the mode of double track be the audio frequency (i.e. A1+2) of two different sound channels, and is sent to monitor supervision platform together with current monitor video V as the sound accompaniment of current monitor video V by A1+2.
In addition, in another embodiment, audio-frequency processing method according to embodiments of the present invention may also include that when the storage condition of front monitoring front-end PU allows, the current monitor video V collected and the mixed audio A1+2 received also can be processed as video record and carry out locally stored by front monitoring front-end PU, and, in video record, mixed audio A1+2 is as the sound accompaniment of current monitor video V, so that the first present video A1 that in the video record that preserves of front monitoring front-end PU, the sound accompaniment of monitor video not only includes under the front monitoring front-end PU home environment gathered, also include the second present video A2 of the local monitor front end PU speech talkback from client CU received, thus the integrity of the monitoring audio frequency ensured in the local video record of front monitoring front-end PU, simultaneously, the monitor video comprising mixed audio is made not only to be only stored in storage server S A, also can be saved in front monitoring front-end PU, thus improving the reliability of monitor video.
In actual applications, environment residing for front monitoring front-end PU can be police kiosk, police kiosk has policeman and monitoring probe, such that it is able to the monitor video (V corresponding in above-described embodiment) around collection police kiosk, also can gather other various sound under policeman's word and police kiosk local environment, thus the A1 constituted in above-described embodiment;
Environment residing for client CU can be then there is the video monitoring room of speech talkback or voice broadcast service with police kiosk, some information can be listened to by the observer in Control Room by the policeman being sent in multiple police kiosk in the way of voice broadcast service, additionally, observer also can carry out man-to-man speech talkback with the policeman in police kiosk, so that police kiosk receives the voice from video monitoring room, such as, other sound (A2 corresponding in above-described embodiment) in the voice of observer and Control Room.
So, when there being other Control Room (namely, platform client CU ') to a certain police kiosk PU ask monitor video V time, by the technique scheme of the present invention, the voice of the user not only only comprising client CU side in the radio voice of client CU that front monitoring front-end PU receives also includes local monitor front end PU and sends the radio voice to this client CU, so that the current monitor video V not only comprised in the monitor video of police kiosk under this police kiosk environment received by CU ' and audio A 1, it also includes the audio A 2 existing under the Control Room CU ' local environment of speech talkback with this police kiosk PU, thus ensureing the information integrity when monitoring audio/video under police kiosk PU local environment is acquired, also make when a target environment being monitored the collection of video, the monitoring information collected not only comprises the monitoring information that the monitoring information under this target environment also includes existing under other environment of speech talkback with this target environment, thus side expands the monitoring range of field of video monitoring sound intermediate frequency monitoring, improve the availability of monitor video.
According to embodiments of the invention, additionally provide a kind of apparatus for processing audio for video monitoring system.
As shown in Figure 4, apparatus for processing audio according to embodiments of the present invention includes:
First acquisition module 41, for gathering the second present video under current environment;
Mix module 42, for the second present video and the first present video from front monitoring front-end received are carried out stereo process, obtains mixed audio;
First sending module 43, for sending mixed audio to front monitoring front-end.
Wherein, in one embodiment, the mode that the first present video and second from front monitoring front-end received currently carries out stereo process can be included at least one of by client:
Process according to predetermined Mixed Audio Algorithm and encryption algorithm;
Process according to the mode of double track.
Additionally, in one embodiment, apparatus for processing audio according to embodiments of the present invention farther includes:
Second acquisition module (not shown), for when front monitoring front-end is play mixed audio and receives video request, gathering the current video under current environment;
Second sending module (not shown), is used for sending current video and mixed audio, and wherein, mixed audio is the sound accompaniment of current video.
It addition, in one embodiment, apparatus for processing audio according to embodiments of the present invention farther includes:
Processing memory module (not shown), for processing current video and mixed audio for video record and storing, wherein, in video record, mixed audio is the sound accompaniment of current video.
In sum, technique scheme by means of the present invention, by the present video of local user being carried out stereo process with the current intercommunication audio frequency from client in client, and mixed audio frequency is sent to front monitoring front-end as intercommunication audio frequency, so that the monitoring audio frequency in monitor video is more comprehensive and complete, improve monitor video integrity in evidence collection, improve case-solving rate.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (8)
1. the audio-frequency processing method for video monitoring system, it is characterised in that including:
Client gathers the second present video under current environment;
Described second present video and the first present video from front monitoring front-end received are carried out stereo process by described client, obtain mixed audio;
Described mixed audio is sent to described front monitoring front-end by described client.
2. audio-frequency processing method according to claim 1, it is characterised in that when described front monitoring front-end is play described mixed audio and receives video request, described audio-frequency processing method farther includes:
Described front monitoring front-end gathers the current video under described current environment;
Described front monitoring front-end sends described current video and described mixed audio, and wherein, described mixed audio is the sound accompaniment of described current video.
3. audio-frequency processing method according to claim 2, it is characterised in that described audio-frequency processing method farther includes:
Described current video and described mixed audio are processed as video record and store by described front monitoring front-end, and wherein, in described video record, described mixed audio is the sound accompaniment of described current video.
4. audio-frequency processing method according to claim 1, it is characterised in that the first present video from front monitoring front-end received and the described second mode currently carrying out stereo process are included at least one of by described client:
Process according to predetermined Mixed Audio Algorithm and encryption algorithm;
Process according to the mode of double track.
5. the apparatus for processing audio for video monitoring system, it is characterised in that including:
First acquisition module, for gathering the second present video under current environment;
Mix module, for the second present video and the first present video from front monitoring front-end received are carried out stereo process, obtains mixed audio;
First sending module, for sending described mixed audio to described front monitoring front-end.
6. apparatus for processing audio according to claim 5, it is characterised in that described apparatus for processing audio farther includes:
Second acquisition module, for when described front monitoring front-end is play described mixed audio and receives video request, gathering the current video under described current environment;
Second sending module, is used for sending described current video and described mixed audio, and wherein, described mixed audio is the sound accompaniment of described current video.
7. apparatus for processing audio according to claim 6, it is characterised in that described apparatus for processing audio farther includes:
Processing memory module, for processing described current video and described mixed audio for video record and storing, wherein, in described video record, described mixed audio is the sound accompaniment of described current video.
8. apparatus for processing audio according to claim 5, it is characterised in that the first present video from front monitoring front-end received and the described second mode currently carrying out stereo process are included at least one of by described client:
Process according to predetermined Mixed Audio Algorithm and encryption algorithm;
Process according to the mode of double track.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410617915.7A CN105635659A (en) | 2014-11-04 | 2014-11-04 | Audio processing method and apparatus for video surveillance system |
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| CN201410617915.7A CN105635659A (en) | 2014-11-04 | 2014-11-04 | Audio processing method and apparatus for video surveillance system |
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Application publication date: 20160601 |