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Monitoring audio part to be excavated
From:The Site Author:admin Time:2016-5-16
For the importance of audio monitoring, there are some people who oppose. That the audio monitoring will be a violation of personal privacy, but also some people think that the audio monitoring is not necessary. In fact, it is now in many areas of audio monitoring has become an integral part of.
First, the market is optimistic about the audio surveillance
Most of the traditional monitoring system is not sound or noise is too large, generally only through video analysis. In the security market is excellent situation, with the video surveillance technology to improve and monitor is widely used in various fields, audio analysis, identification and sound source location will in the monitoring play an important role, whether public security inspection agencies, or airports, railways, banks and other key units and staff gathering places, monitoring system need realize the audio and video synchronization and audio surveillance has become a new bright spot in the security industry.
Currently audio monitoring program in the public security system, schools and other projects are frequently used, application of civilian control of relatively small, although there are certain market demand, however the audio as independent industry application is very small, is still in the primary stage. Digital HD video era has come, as an important branch of the rapid development of the security industry in recent years, audio monitoring shows a huge potential value.
Will sound source localization, and audio and video analysis application to video surveillance solution scheme reflects the security monitoring field of high intelligence, this technology more for monitoring in public places, to achieve real-time video automatically capture and the sound source location, such as explosion point, shot point and vehicle location of the alarm. In the relevant case investigation, the audio analysis also played an important role, can be recorded in the video surveillance video to determine the event record.
Second, audio monitoring of the reasons for the neglect
(a) due to the security has always been regarded as a more mysterious industry, audio monitoring may relates to personal privacy issues, such as some sensitive things privately talking about if "accidentally" was recorded, and the monitoring data improper storage resulted in the loss of privacy. Video surveillance in public places, the state has the relevant laws and installation specifications, the implementation of legal protection. Although there is no essential difference between audio surveillance and video surveillance, there is no express provision, which hinders its development.
(b) audio monitoring by "taboo" also led to its development is not valued. Long term audio monitoring technology development is slow, coupled with the sound transmission itself will be affected by the environment, resulting in noise processing is difficult. Voice and noise is amplified and easily confused together, even arranged monitor microphone hear is noise, audio monitoring did not reach the purpose and significance.
Third, network camera monitor microphone in poor quality
In the face of the current situation of audio monitoring, the objective is not easy to solve the problem, but to solve the subjective problem, or can be a little ability to. When the camera is the coremonitor microphone of poor quality, high price, we use some tricks, can be improved.
(a) first determine whether the network camera audio input: LINEIN (linear input)
(b) if it is to determine the line of the audio input port, then check themonitor microphone power supply is normal, check the monitor microphone connection on whether
(c) if the above two are identified, the sound quality of the network video camera is still very vague or no sound
1, first check, monitor microphone audio signal output connection, the general network camera audio input connector is 3.5 headphone connector, then corresponding audio monitor microphone signal line, want to transfer into 3.5 headphone connector.
2, should pay attention to while you are connected to the 3.5 headphone connector, but 3.5 joint, he is double channel and single channel, is divided into stereo and mono, check your 3.5 joint is a dual channel or single channel.
3, if the confirmation is mono, then the cathode is connected with 3.5 monitor microphone of the cathode, the anode is connected to the anode of the corresponding. If you are dual channel, then there will be a three core cable,monitor microphone electrode connected 3.5 negative, whereas the positive pole is connected 3.5 couplings correspond to the other two core line, respectively, the left and right channels.
4, there is a situation is now a certain brand of network camera audio input is at the same time with: line and MIC input. That is to say an audio input port, he may is the left channel is line right channel is mic, such a situation, cannot be left and right channels together and then 3.5 cathode, to separate. For example, the negative or negative, the positive pole is connected to one of the 3.5 connectors, and then listen to the sound is normal, if not normal, for another audio cable to connect. Not both the left and right channels are parallel, but also prohibit the use of single channel 3.5 joints, must use a dual channel joint.
First, the market is optimistic about the audio surveillance
Most of the traditional monitoring system is not sound or noise is too large, generally only through video analysis. In the security market is excellent situation, with the video surveillance technology to improve and monitor is widely used in various fields, audio analysis, identification and sound source location will in the monitoring play an important role, whether public security inspection agencies, or airports, railways, banks and other key units and staff gathering places, monitoring system need realize the audio and video synchronization and audio surveillance has become a new bright spot in the security industry.
Currently audio monitoring program in the public security system, schools and other projects are frequently used, application of civilian control of relatively small, although there are certain market demand, however the audio as independent industry application is very small, is still in the primary stage. Digital HD video era has come, as an important branch of the rapid development of the security industry in recent years, audio monitoring shows a huge potential value.
Will sound source localization, and audio and video analysis application to video surveillance solution scheme reflects the security monitoring field of high intelligence, this technology more for monitoring in public places, to achieve real-time video automatically capture and the sound source location, such as explosion point, shot point and vehicle location of the alarm. In the relevant case investigation, the audio analysis also played an important role, can be recorded in the video surveillance video to determine the event record.
Second, audio monitoring of the reasons for the neglect
(a) due to the security has always been regarded as a more mysterious industry, audio monitoring may relates to personal privacy issues, such as some sensitive things privately talking about if "accidentally" was recorded, and the monitoring data improper storage resulted in the loss of privacy. Video surveillance in public places, the state has the relevant laws and installation specifications, the implementation of legal protection. Although there is no essential difference between audio surveillance and video surveillance, there is no express provision, which hinders its development.
(b) audio monitoring by "taboo" also led to its development is not valued. Long term audio monitoring technology development is slow, coupled with the sound transmission itself will be affected by the environment, resulting in noise processing is difficult. Voice and noise is amplified and easily confused together, even arranged monitor microphone hear is noise, audio monitoring did not reach the purpose and significance.
Third, network camera monitor microphone in poor quality
In the face of the current situation of audio monitoring, the objective is not easy to solve the problem, but to solve the subjective problem, or can be a little ability to. When the camera is the coremonitor microphone of poor quality, high price, we use some tricks, can be improved.
(a) first determine whether the network camera audio input: LINEIN (linear input)
(b) if it is to determine the line of the audio input port, then check themonitor microphone power supply is normal, check the monitor microphone connection on whether
(c) if the above two are identified, the sound quality of the network video camera is still very vague or no sound
1, first check, monitor microphone audio signal output connection, the general network camera audio input connector is 3.5 headphone connector, then corresponding audio monitor microphone signal line, want to transfer into 3.5 headphone connector.
2, should pay attention to while you are connected to the 3.5 headphone connector, but 3.5 joint, he is double channel and single channel, is divided into stereo and mono, check your 3.5 joint is a dual channel or single channel.
3, if the confirmation is mono, then the cathode is connected with 3.5 monitor microphone of the cathode, the anode is connected to the anode of the corresponding. If you are dual channel, then there will be a three core cable,monitor microphone electrode connected 3.5 negative, whereas the positive pole is connected 3.5 couplings correspond to the other two core line, respectively, the left and right channels.
4, there is a situation is now a certain brand of network camera audio input is at the same time with: line and MIC input. That is to say an audio input port, he may is the left channel is line right channel is mic, such a situation, cannot be left and right channels together and then 3.5 cathode, to separate. For example, the negative or negative, the positive pole is connected to one of the 3.5 connectors, and then listen to the sound is normal, if not normal, for another audio cable to connect. Not both the left and right channels are parallel, but also prohibit the use of single channel 3.5 joints, must use a dual channel joint.