audio visual | audiovisual equipment | christie video wall

Video wall means multiple monitor or screen of television set tied together . Mostly display technologies  LED arrays, DLP tiles,include LCD panels and rear projection screens.
          Main reason for video wall in place of a single large screen can include the capacity to customize tile layouts, greater screen area per single display cost, and greater pixel density per unit cost, due to the economics of manufacturing single screens which are not usual in shape, size, or quality.Christie is first to market a 3-chip DLP  video wall solution that provides options for larger screen sizes using fewer projectors.

audio visual | audiovisual equipment |display wall or video wall

In many companies there are video wall installed for the presentation purpose or for the introductory purpose . I mean introduction of the company...... !
Here we see the basic about what is video wall and how it works.And all types of video wall .Also the works of video wall.Why it is impotent in any organizational. 

audio visual | audio visual equipment | life-size |audio conferencing

Audio visual | audio visual equipment | life-size |audio conferencing

Now we see about the  life-size audio conference systems or life-size audio-conferencing equipments ...... !
For a authentic audio conferencing there should be high definition audio require .Life-size provides high definition audio conferencing equipments Life-size equipments enables people to communicate effectively whether working from a large conference room or a small office sitting.

First of all we have to know something impotent about audio conferencing or before selecting the audio conferencing  equipments... !

1-The last thing you want is to buy is equipment that's not going to get used.   If you come to a consensus as a  group on the features of the new audio conference equipment and even whether or not your team needs an upgrade.
2-Then contact all suppliers  and give the proper needs to the supplier .
3-Get many quote then compare all quote with make and models.
4-Set the whole budget from accounting department .
5-Before you buy try all the systems if they are supporting or not to your system .

audio visual | audiovisual equipment | lifesize video conferencing systems

 Audio visual | audiovisual equipment | life-size video conferencing systems
Hey last time we saw about poly-com video conferencing equipments same here there is another video conferencing system that is life-size .

     Life-size is also very good company who deals with the AV equipments
Life-size Passport is the first High-definition video system to deliver tele presence-quality and unmatched simplicity at a price point that enables broad deployment to every knowledge worker in your organization.Life-Size is the first truly portable video conference system.
  The new Life-size Camera 10x is the company’s first 10x optical zoom camera
Designed for large meeting rooms auditoriums and lecture halls this new High definition video conferencing accessory option delivers increased zoom capability to support Full High definition quality video even it is claimed at significant distances. The new camera is to be bundled with any of the Life-size 220 series endpoint offerings.

The features of that camera is .....!
* Improved Pan Tilt Zoom functionality – Smoother          operational handling for more lifelike interactions
* 1080p30 support and increased zoom capability – Full High definition video     supports larger meeting rooms with crisp, clear resolution     and detail
* Improved low light handling – Better quality video in darker environments
* Anti glare visor – Reduced light glare on lens to support productive High      definition video communications.

audio visual | video conference | poly com camera

  First of all we see very basic about how poly com camera works.
Polycom camera works with Polycom's software and will not function as a web cam in Web Meeting. ViaVideo and its software are compatible with any ITU H.323 standard endpoint such as NetMeeting, and Polycom's line of H.323 products.
you require high speed internet for ip camera works.IP camera is a combination of a camera and acomputer. The camera can be connected directly to the network. It has built-in software for a web server, FTP server and e-mail client. Some advanced versions support motion detection and alarm input/output ports.

How does the Ip camera works...... !

• The Camera captures the image
• Captured images are transformed into electrical
  signals
• These signals are converted from analog to
  digital format
• Digitized signals are compressed and sent over
  the network.

Difference between ip&cctv camera..... !

• Analog CCTV systems connect to a DVR (digital
  video recorder) using coax cables and BNC
  connectors (not networked).
• IP Cameras connect directly to an existing
  Ethernet network. This connection could be
  wired or wireless and they can be accessed from
  anywhere.

audio visual | video conference | ip cameras

There are many companies which uses the ip cameras for video conference.....
There are may types of ip cameras .basically these cameras are high resolution and movable.
now we see the POLY-COM . it provide many types of cameras .some types are ..... !
Mainly there are two types of camera system 1-room systems & 2-personal systems.

1-Room systems :-Polycom video conferencing systems for conference rooms allow groups to meet naturally over distance, enabling more productive meetings and real-time decision making.

2-Polycom solutions for the personal space combine ease-of-use with standard definition communication, allowing individuals and teams to interact across various environments.

audio visual | audio visual equipment |display screen

Audio visual equipments. Here today we see the types of projector screen.The types of projector screen are .... !

1> Curved Screens

• Vutec Ultra High Gain Curved Screen

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2> Stretched Flat Screens

Standard with 1.5” Frame:

• STEWART Luxus Screenwall

• DA-LITE Permwall and Da-Snap

• DRAPER CinePerm

• VUTEC Vu-Easy

Deluxe with 3.25” Frame:

• STEWART Deluxe Luxus Screenwall

• DA-LITE CinemaContour

• DRAPER Shadow Box Clarion

• VUTEC Vision XWF

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3> Electric Motorized Free

Hanging Screens

Electric Motorized Tab-

Tensioned Screens

• DA-LITE Cosmopolitan Electrol™

• DRAPER Targa™

• VUTEC Vision XL and Lectric

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4> Motorized Trap Door Screens

• DA-LITE Director Electrol

• DRAPER Signature Series E

• VUTEC Lectric III

audio visual | audi visual equipments projector display

Hi we all know little bit about all things which are use in the audio visual Field.
know we see the little bit about projectors.

There are many types of projectors used in video conferencing for the display purpose.

There are main three types of projectors ...... !

1> LCD




LCD projectors start with a source of light (lamp) and split the light into three beams. Each beam passes through its own LCD panel. The LCD panels each have hundreds of thousands of tiny pixels the higher the resolution the more pixels.Data determines whether light is allowed to pass through each.

2> DLP



The vast majority of DLP projectors use a single monochrome DLP chip (officially DMD for "Digital Micro Device), and the aforementioned spinning color filter wheel to generate colors. Unless specifically noted, when this series of articles refers to DLP projectors, they are discussing single chip models

3> CRT



The full form of CRT is(Cathode Ray Tube)When video projectors first arrived on the scene, television technology was based on the Cathode Ray Tube (CRT), on which the viewer sees the television image. Three small CRTs (one for each primary color), coupled with a light magnifying lens, can project a color image onto a large screen in a darkened room. With the proper video processing circuitry, CRT size, and lens combination, a CRT projector can produce excellent high resolution images.


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audio visual | video conference and video equipments used

you all know about video conference .And how video conference work and where the video conference work...... !
The word video conference means "A live video and voice communication between 3 or more than three person from different places" .
Now that we have discussed the meaning of video conferencing let us look at the technology and setup required to host a video conference. The most common method used to connect individuals for a video conference is through a computer network. The basic concept is that the computer network acts as a central hub where all the participants go to connect in to the conference.
There are two types of devices required one is input device and another one is output device. 1> web-cam or standard video camera 2> projector or monitor.Also during the conference there is a need of audio also for that we need to use .
Audio input Takes the form of microphone. Sometimes each person might be individually miked some video conferences have one general microphone that is passed around or can consist of a microphone in a central location.
Audio output Usually consists of speakers. These speakers can range from professional equipment headphones or even tiny speakers on a laptop computer.



Hmmmmmmm know we see little bit about importance of video conferencing ..... !

Video conferencing is used by many businesses usually to save both time and money. One of the great advantages of video conferencing is that two or more parties can have a virtual face to face meeting to conduct business, which is seen as more beneficial than just a conference call. Other parties such as educators and health professionals use video conferencing when giving lectures, teaching about topics that require visual cues or visual information. Health professionals can give a diagnosis by conducting an examination via a video conference. There are many advantages to this technology and this has a lot to do with its exponential growth in recent years.

audio visual | audioconference parts in detail

Audio visual equipments and little bit in detail about audio conference. Used parts
.....
First we see the detail parts in audio conferencing .
how the audio conferencing are working .
many people think why audio conference system is importent ? we can use cel phone at the place of costly machinary but they are wrong .There are thousend of functions are present in the audiconference devices .the systems are connceted through wireless chip now a days .
If Once you ve decided on the type of audio controls you need you can explore specific functions and find the software or hosting company that offer what you need. Here are some of the functions are there.



1> you can Dial new person during the call .
2> you can Set some announcement in between.
3> you can Mute or unmute a participantline.
4> you can Raise or lower volume of any individual line.
5> you can Record a conference so those who could not be present can hear it later.
6> you can Make Private conversation allows several participants to move into a private "mini-conference" and then rejoin the group.

audio visual | what is conferencing | equipmensts used

Conference means when two or more people come together or share the information its called as conferencing .



Conferences can be face-to-face affairs. A salesman attends a trade show to pitch his product to hundreds of potential clients.
* There are may types of conferencing *

1> Teleconferencing.
2> Videoconferencing.
3> Web conferencing.

First we see the TELECONFERENCING ....... !

If you ever use a three way phone call you've already teleconferenced.There are two types of conference call.1(Meet-Me)& 2(Ad-Hoc).
Meet-Me :-Meet-Me conferencing requires participants to call a special phone number on a given day and time and enter an access code to join the teleconference.
Ad-Hoc :-conferencing requires a moderator to call each of the attendees individually and connect them together.



Teleconferencing has endless applications in the business world, from large corporate conference calls for shareholder earnings reports to four salesmen in four different cubicles discussing a new product.
Teleconferencing advantages are that the technology is familiar to anyone who uses a phone, it's easy to set up, and it offers good audio interactivity for small groups. Its disadvantages are that it greatly limits collaboration and interaction for larger groups, and that audio-only presentations are often less engaging to attendees.
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Know we see the VIDEOCONFERENCING ....... !

This is the simplest form of videoconferencing, where the presenter appears on the screens of all the attendees in a small Web cam video window. For small groups, some software programs offer the "Brady Bunch" effect, in which all of the attendees appear on the screen in separate Web cam windows.

There is a difference, however, between this simple form of videoconferencing and what are known as Web casts. Web casts are professional-quality online video presentations, usually for larger groups and with less interactivity between participants.


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Little bit about WEBCONFERENCING ....... !

Web conferences and Web seminars allow groups of people to collaborate online using special software or Web interfaces.


They are making web conferencing in one office.



They are doing different types of web conferencing.

video conferencing | video conferencing equipmenta

Know a days video conferencing is very popular . Many multinational companies are working with video conferencing .In every beatings video conferencing is must .
There are many equipments are used in video conferencing .the basic equipment is camera and out put display .. ! know we see little bit about how video conferencing works . Video input usually consists of either a video camera or a web cam. Usually there are two video cameras, at least one camera at each location. For larger video conferences there can be many more cameras. Digital projectors are used frequently to show a presentation not only in one location but sending the presentation as well as part of the video conference. Besides a standard video camera, more and more people are using web cams to conduct their video conference.
Video Output

Video output can be in the form of any video output form such as a standard TV set, digital TV set, computer


Read more about How Video Conferencing Works ..
know we see the images of video conferencing .how it works some basic images ..... !

audio visual | audio equipments ,speaker

In audio conferencing input source is mic .but the main out put source is speaker and without speaker audio conferencing is not possible . There are many types of speakers used in audio conferencing witch are ........... !First we must know that How speakers work ? the basic mechanism of speaker.

Speakers are air pistons that move back (on the negative cycle of the signal) and forth (on the positive cycle), creating different degrees of air pressure at different frequencies. The amplifier (either separate or built-in your radio), produces electrical impulses that alternate from positive and negative voltages (AC). This current reaches the voice coil inside the speaker, creating an electro-magnet that will either be repelled, or attracted by the fixed magnet at the bottom of the speaker. The voice coil is attached to the cone, moving it back and forth, creating sound. The surround (rubbery circle that joins top of the cone and metal basket) and the spider (usually yellow corrugated circle joining bottom of cone to magnet) make the cone return to its original position.

Speaker Sensitivity, measured in dB, is how loud a speaker plays (usually 1 Watt, 1 meter). A higher Sensitivity rating means that the speaker will play louder using the same power as a speaker with a lower rating.

The back and front parts of the speaker should be isolated from each other। When the front of the cone is pushing air, the bottom is pulling air, creating a canceling effect. Ideally every speaker should be in an enclosure. If you are mounting a speaker in a big hole, make sure you build a panel to isolate the front and back of the speaker (baffle).

1) wall spears are placed on wall .like below images..

2. images of sum wireless speakers which are ..... !

audio visual equipment | audio conferencing

The basic parts of audio conferencing are ....mic , speakers , audio mixer , amplifier & wireless audio systems( receiver ).

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1> MIC
There are many types of mics ........... !First of all we have to know little bit about how mic works or the basic mechanism of mics.
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Ok know we see the types of mics ...

1>wireless mics .___________________________________________________________________
2>wireless color mic.
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3>wireless table mic.