Outdoor PTZ camera with speaker and microphone. IP camera EazyN - FullHD, IR, external microphone, motion sensor and control from smartphone, PC. Sound in network video surveillance systems

Outdoor PTZ camera with speaker and microphone. IP camera EazyN - FullHD, IR, external microphone, motion sensor and control from smartphone, PC. Sound in network video surveillance systems
27.10.2019
  • 2 MP CMOS sensor progressive scan
  • Built-in Wi-Fi module IEEE 802.11 b/g/n ( WPS)
  • Mode support DWDR(Digital Dynamic Range)
  • Built-in IR motion sensor with detection range up to 6 m
  • Built-in speaker and microphone with sound gain setting
  • Simultaneous encoding in MJPEG, MPEG-4 or H.264
  • Broadcast Mode Support multicast and unicast
  • Up to 30 fps at 1920x1080 resolution ( Full HD realtime)
  • Multi-zone Motion Detector and detector sound
  • Memory card support microSDHC(up to 32 GB)
  • Recording to external network storage (NAS)
  • ONVIF v.2.2 support
  • Web interface in Russian and software for 16 channels included

2 MP network IP camera N520 with built-in Wi-Fi module allows you to avoid laying cable networks and is economical solution for installation in any heated premises. The camera supports Full HD real-time, H.264 encoding format, switching broadcast modes, and if the connection with remote file storage is interrupted, it can continue recording to a memory card of the format microSDHC. DWDR, BLC and noise reduction allow you to always create a high-contrast image with clearly visible details even in conditions of changing illumination or backlight. The camera allows you to identify various alarm events, including unauthorized movement in the dark using IR sensor.

The ability to record audio makes the tracking device a comprehensive security equipment. Connecting a separate microphone may cause compatibility and setup issues. Cameras with a microphone simplify installation: an external recording device may require a separate power or signal line.

Pay attention to models with built-in Wi-Fi module, the installation of which boils down to fixing the device and connecting the power supply. Despite more high price video cameras with a microphone working through wireless transmission data, this solution allows you to save on laying communication lines and installation work.

Two-way communication

If there is a built-in loudspeaker, the camera can be used as a video intercom, allowing you to conduct a dialogue with the visitor. This function is in demand when the equipment operates in video baby monitor mode.

Price of cameras with built-in microphone in Moscow

The Amikom online store cooperates directly with equipment suppliers, being an official partner of well-known brands. Affordable prices are ensured by direct deliveries of goods from the manufacturer’s factories.

Which model is suitable for home video surveillance?
In this case, we recommend devices with a built-in microphone and speaker. Pay attention to the Bestseller – Dahua DH-IPC-K15P. This compact wireless camera works in the digital standard, producing a resolution of 1.3 MP with a sensitive CMOS sensor with a 1/3 size. Manufacturer used quality materials and components.

IP camera with motion sensor CD310 is designed to work with the CamDrive cloud video surveillance service. The CamDrive service allows you to organize effective system video control.

MOTION DETECTION (PIR SENSOR)

The CamDrive CD310 video camera is equipped with a built-in IR motion sensor. The motion camera is triggered instantly and, based on a signal from the infrared detector, starts recording video in the archive and/or sends an alarm message about movement in the selected area. For example, in case of penetration into a room with installed camera CamDrive, You can immediately receive a notification via SMS or e-mail about this fact. A camera with a motion sensor is actually two systems in one: an online video camera with a “cloud” archive and an alarm system with video confirmation of events.

BUILT-IN ACTIVE MICROPHONE AND SPEAKER

CamDrive CD310 is a multifunctional IP camera with microphone and speaker. The active microphone built into the camera allows you to both “hear” what is happening in real time and record sounds in the camera’s coverage area in an archive. The acoustic coverage area of ​​the microphone is 10 meters. Important Features microphone - high sensitivity to quiet sounds and low level extraneous noise from the amplifier, which makes it possible to transmit sound with virtually no distortion.

The camera is equipped with a high-quality speaker - in one click you can send audio messages from the application or from your computer to the camera. The possibility of two-way audio communication sets it apart this model from competitors. The function of transmitting audio through an IP camera with a speaker from your personal account or application is useful not only in everyday use, but can also greatly help with emergency situations in the observation area.

NIGHT SHOOTING (IR ILLUMINATION)

When the light level in the observation area drops, the camera automatically switches to night shooting mode, and the illumination built into the camera in the infrared spectrum, invisible to the human eye, turns on. Night mode shooting allows you to get a high-quality picture from the camera even in absolute darkness.

USING CAMDRIVE HOSTING SERVICE

The CamDrive online access service not only provides the ability to monitor events in real time from anywhere via the Internet, but also stores video recordings on remote servers, which eliminates accidental or intentional damage to data in the case of local archive storage. A video camera with a speaker only needs to be connected to the INTERNET network and connected to the power supply - included in the purchase additional equipment or there is no need to install specialized software.

WORKING IN DIFFICULT LIGHTING CONDITIONS

Wide dynamic range (DWDR) technology allows you to record high-quality video images when the lighting of objects in the frame is uneven. For example, if the camera is aimed at a light source, and an object located between the light source and the camera lens enters the field of view, a backlight effect will occur - it will be difficult to see the details of both the object itself and the space behind it. The DWDR mode allows you to minimize backlight - lighten dark areas of the frame and darken overexposed areas, thereby you get a high-quality image even in difficult conditions illumination

VIDEO ARCHIVE

An IP camera with a built-in microphone and speaker, coupled with the CamDrive service, provides the opportunity convenient choice a fragment recorded in the archive for playback and downloading. You can choose the recording method yourself in your personal account: constantly, according to a schedule, or triggering the camera to start working on movement. Insert a miroSD memory card into a special slot and you will not be left without video recording even in the absence of the Internet. All video data will be saved to the card, and when the connection is restored, it will be automatically transferred to the cloud archive.

CONNECTING AND INSTALLING CD310 IP CAMERA

Video camera CD310 - smart IP camera with speaker and microphone! To connect, you do not need to make any settings - you can easily do it yourself without resorting to the help of installation organizations. The camcorder has 2 connectors on the rear panel. Just connect the plug from the power supply into one connector, and the Internet cable into the second connector. All that remains is to enter Personal Area to view online broadcasts and recordings from your camera.

STORING INFORMATION ON REMOTE SERVERS

A “cloud” archive is a dedicated space on remote servers where video from the camera is recorded. The archive is necessarily encrypted and duplicated several times, thereby preventing loss or damage to data. CamDrive allows you not to think about organizing data storage or online broadcasts from your cameras and makes it possible to build a video surveillance system on our own in a few minutes using a regular browser with desktop computer, laptop, tablet and even mobile phone from anywhere in the world via the Internet.

10/02/2015 Denis Lyapin

Equipping a video surveillance system with loudspeakers can very effectively prevent unwanted actions. With their help, the system operator can remotely give instructions and ask questions to both visitors and uninvited guests. Therefore, loudspeakers play a very important role in video surveillance systems.

If the behavior of a person caught in the camera's field of view raises suspicions (he is seen loitering near an ATM, or he enters a restricted area), the security guard located at the control panel of the video surveillance system can immediately warn him against possible misconduct over speakerphone. In many cases, this is quite enough to avoid unwanted incidents. Thus, the use of CCTV helps to take proactive measures and prevent crime. Now let's look at the factors that should be considered when choosing and installing a loudspeaker.

SPEAKER TYPES

Loudspeakers are devices that convert electrical signals into audible signals. mechanical waves pressure (sound). Exist Various types loudspeakers, but in video surveillance systems you usually have to choose between dynamic and horn speakers.

Dynamic loudspeakers. Dina The microphone loudspeaker has a lightweight diaphragm - a cone connected mechanically with voice coil. These types of devices are used in many applications. Examples include in-ceiling and wall-mounted speakers, as well as Hi-Fi systems. The disadvantage of dynamic loudspeakers is their low efficiency: only 1% electrical energy transmitted to the speaker from the amplifier is converted into acoustic energy.

Horn type loudspeakers. Blah Thanks to the acoustic horn, the overall efficiency of this system is much higher. The compression drive included in the device is connected directly to the horn. Because this design increases the output power from the amplifier by ten times, horn speakers are often used in public address systems. Compared to other types of speakers, the sound they transmit is heard further.

The disadvantage of horn loudspeakers is that their optimal frequency range is limited. Therefore, they are of little use for playing music. But for broadcasting speech (especially when it is necessary to cover large spaces), horn loudspeakers are ideal.

SOUND IN NETWORKS VIDEO SURVEILLANCE SYSTEMS

A digital audio signal transmitted over a network must be delivered to its destination, decoded and amplified. Only then can the electrical audio signal be converted into sound. All of the above actions can be performed either in a single integrated device or in several autonomous components (transmitting equipment, amplifier and loudspeaker).

Analog speakers. Integration of sound into network video surveillance systems is carried out by connecting an analog speaker to the audio output of the network camera. In this case, the signal coming from the camera requires amplification. When using a conventional passive speaker, a separate amplifier is needed, and in most cases a built-in amplifier is preferred. This analog speaker - with a built-in amplifier - requires an external power supply.

IN network systems CCTV analog speaker with built-in amplifier is connected to the line level analog output on network camera. Analog signal Line level is sensitive to external noise, so the speaker should be placed close to the camera. Otherwise, there is a risk of interference from the power cable and other interference. To control the analog speaker in the camcorder, there is special software.

Installing an analog speaker only makes sense if it is possible to place it next to the camera, and there is a electric outlet. To remotely check its operation, you need to connect a microphone to the camera so that the operator can hear what he says.

Network speakers. Network speaker delivers a complete, easy-to-install public address solution in a single device. Unlike analogue, which connects to a surveillance camera and electrical network, a network speaker is a stand-alone device that can be placed some distance from the camera. If the network speaker supports Power over Ethernet technology, power supply and network data transmission are carried out over a single network cable.

Streaming audio over the network ensures proper sound quality and high level reliability. When using network audio technologies, sound is sent to the speaker in digital form, which allows you to achieve good quality playback and immunity to signal attenuation. Thanks to this, there are opportunities to simplify individual operations and automate them. Streaming audio can be broadcast via local network, via the Internet and regionally distributed networks. Remote control the entire system is centralized, and pre-recorded audio files can be easily played from anywhere with a network connection. This system is suitable for warning both indoors and outdoors.

In a networked audio system, each speaker is addressed individually. Smart speakers support various smart features such as automatic tracking. The use of IP networks simplifies integration with other systems. Network speakers integrate with software video control. If the speaker supports VoIP telephony over SIP, the paging system equipped with it will be even more effective.

Network dynamics are highly flexible and scalable. Their modular design makes it easy Maintenance and system modernization. The installation procedure is also simplified - no special equipment not required. Using your existing network infrastructure allows you to quickly, easily and efficiently install everything you need.

COVERAGE AREA

After selecting the speaker type, you need to set the coverage area, after which the level is determined sound pressure, warning range and coverage area (sector), as well as the number of required loudspeakers.

Sound pressure. The volume of the sound depends on the sound pressure level. Every additional 10 dB results in a twofold increase in volume. For example, 120 dB is twice as loud as 110 dB. Sound pressure levels can be illustrated in following examples: Motorcycle (98 dB), loud rock concert (115 dB), nearby thunder (120 dB), jet plane taking off (133 dB). A level of 120 dB is considered to be uncomfortable for the human ear, and the pain threshold is around 130 dB. The sound pressure value for a specific area will depend on the background noise level and the required range. It is usually recommended to choose a slightly more powerful onespeaker because the volume may decline.

Range and coverage area. Different speakers provide different range and coverage. In general, the wider the coverage angle, the shorter the range. Sound coming from a speaker with a narrow coverage area is heard further. Coverage area varies for different frequencies and is always approximate. The sound intensity is highest in the middle and decreases as you move away from the center. The same is observed with light sources: the brightness is maximum in the center and decreases at the edges.

It should also be taken into account that sound is reflected from most surfaces. And in this case, we can also draw an analogy with the light that is reflected from mirrors hanging on the walls. In some situations, this has a negative impact on sound quality, making it difficult to hear. The quality of speech is especially severely reduced, sometimes becoming completely unintelligible. On open space good sound easier to achieve than in places where there are many obstacles.

Speaker direction. After determining the type of speaker, you need to think about its orientation in space during installation. The speaker should be aimed at the area on which attention is focused, and its center should be at the place where people are expected to be. When deploying CCTV systems, the speaker is usually mounted 3-8 m above the ground and pointed at the area being monitored. As noted earlier, sound travels in the same way as light from a lamp: it is most intense in the center and weakens towards the edges. The higher the speaker is raised above the ground, the wider its coverage area will be and the lower the sound pressure level.

Expanding coverage area. To increase the coverage area, it may be necessary to install multiple speakers. In any case, they must be turned to different sides. The figure above shows an example of using three speakers in a large courtyard of a building, along the perimeter of which surveillance is organized.

The sound coming from the speakers should be heard in the same areas monitored by the cameras. This will allow operators to address anyone in their area of ​​attention and switch between different cameras and speakers.

CONCLUSION

The use of loudspeakers in video surveillance systems is effective way crime prevention. Speakers can be integrated into a CCTV system in different ways. For creating effective solution, which will meet the requirements for it, it is important to choose correct option. When installing a speaker, you must first take into account the coverage area and the desired sound pressure level, as well as installation and maintenance features. Testing a device before purchasing, whenever possible, will allow you to dot the i's and make your choice ahead of time.

Denis Lyapin- technical trainer, Axis Communications Russia and CIS.



IP cameras with speakers are well suited for monitoring offices, warehouses, and stores. For example, the owner can control the work of employees by giving them commands by voice and, accordingly, receive answers in the same mode. In addition to professional tasks, an IP camera with a speaker is also suitable for personal purposes, video surveillance in country house, apartment. It can be used as a video nanny for a child, as a means of constant communication and for other purposes.

Features and characteristics of an IP camera with speaker

Our online store offers customers various models IP cameras with speakers. On the website it is easy to choose the option that suits your needs, thanks to a convenient product search and a clear description of all the main features and characteristics. You can buy an IP camera with a speaker for a price starting from 2000 rubles.

Here are a number of criteria to pay attention to when choosing:

  • The presence of a microphone and its sensitivity.
  • Speaker volume.
  • Maximum resolution.
  • Viewing angle.
  • Power options, battery power, capability and duration battery life devices.
  • Communication frequency range.
  • List of network protocols.
  • Manufacturing materials, case strength, protection from moisture.
  • Installation method.
  • Simplicity self-installation and connections.
  • Availability of SIM card.
  • Availability of night lighting.
  • The presence of a motion detector and its characteristics.
  • The temperature range in degrees Celsius at which the camera is guaranteed to operate without errors.
  • Dimensions with sides indicated.
  • Weight without packaging.
  • Reviews confirming ease of use and reliability.
  • Availability clear instructions included.

At correct selection characteristics, taking into account all the requirements and conditions, you can buy an IP camera with a speaker that has best combination prices, shooting quality and IP functions. After a simple and quick ordering, the goods will be delivered to your address as soon as possible.