Speaker Placement

Here are some guidelines in how to place your speakers in the entertainment room:


  1. Determine where the listener is going to sit which is usually dictated by the size of the video display.

  2. Ensure that the front-left and front-right speaker forms an equilateral triangle with the seating position. This ensures good stereo separation and audio imaging.

  3. The center speaker shall be placed below (preferred) or above the screen (normal mount position is 1200mm above finished floor). In case of front projection with acoustically transparent screen, mount the center speaker directly behind it.

  4. The front, left, center, and right tweeters should be placed  at the same height (preferably ear level) for sounds to pan seamlessly.

  5. If ceiling speakers are to be used for any of the front channels, make sure they're designed for that purpose. If they're not, they'll fire straight down instead of directing sound to the listening position. Suppliers are Definitive Technology, Sonance, Niles, SpeakerCraft, and Triad to name a few.

  6. Surround speakers should always be mounted behind the ears to achieve the surround effects (generally sounds that originate beside or behind the listener).

AVAYA Unified Communication

Avaya Communication has found a way to make office productivity machines work in a business environment.




The video in AVAYA website features a one number access in which a single number is used to ring 3 devices (i.e. Digital Phone, VoIP client software phone in a Apple iPhone, and the computer equipped with VoIP client software). The is shown below.





The technology also allows video conferencing  using computers.


Video-conference room design

A video-conference room has to be design using the basis of video and audio standard of provision. A room with good lighting provides a better video quality, and a wall with acoustic proofing provides a quality sound.

But what is a good video or audio, or how do make sure that we have a room suited for video-conference. The following item serves as guidelines for constructing a video-conferencing room.




·   Wall Finishes

Painted, papered or fabric walls can be acceptable wall finishes for video conferencing room. They offer a calm atmosphere for all the participants.

Painted walls are best in a flat or semi-flat finish. Avoid gloss or enamel finishes as they reflect light. If you decide to use a paper or fabric finish, avoid tight, intricate patterns, such as striping, checks or tight swirls. These patterns can cause the video image to appear distorted and flicker rapidly. Users participating in your video conference will find this effect unpleasant to their eyes. As with paint finishes, shiny wall coverings are also problematic because they reflect light. Paper or fabric wall finishes in a muted, pale color palette with no texture or minimal tone-on-tone texture are optimum.




·   Lighting

Specify for lightings that evenly lit the space to minimize shadowing. This lighting must not be directed to the camera lens. Diffused fluorescent fixtures work well, as do indirect candescent fixtures, which allow for a dimming feature.

Stark, direct lighting, such as indoor spotlights, which cause heavy shadowing, do not work well in a video conferencing environment. Often a combination of indirect candescent and diffused fluorescent will offer the most lighting flexibility.




·   Audio Equipment

Reverberation and echo distort audio signals. This is the main reason professional recording studios are designed with sound absorbing materials. Material such as carpet, draperies, fabric covered vertical blinds, and fabric wall coverings work best for video conference rooms. In addition, ceilings with sound-proofing tiles will lessen reverberation or acoustic echo effect.

Microphones specifically designed for video conferencing are highly sensitive. As long as the conference room microphones are centrally located, most microphones will capture sound within eight feet of the device.

Avoid moving the microphone while in the conference which may defeat echo cancellation. This will results to reverberation or squawking which is the source of distraction during a meeting.

A small video conference setup, microphones are typically placed in the center of the conference table. However, in a large room where they used the microphones not only for video-conferencing but also for meeting, presentation, and discussion, these require a complex discussion microphone solution (e.g. Danish Interpretation System) where several microphones are placed everywhere.

Bear in mind that microphones placed near the speakers will result in feedback. If this happens, place a feedback exterminator such as the FBX2000 of Sabine.

Not fair

You won't become successful by complaining that life is unfair. Certainly there are many injustices in the world, yet you won't get anywhere by using those injustices as excuses.

Your best response is to work over, under, around and through them. Accept the fact that life is unfair, and choose to experience outstanding success anyway.

It is admirable to fight against injustice. But fighting against injustice may very well make that injustice even stronger.

A better way to end injustice is to make it irrelevant. When you create ways for yourself and others to succeed in spite of unfair circumstances, then you render those circumstances powerless.

The world is filled with inequity and unfairness. And yet, there are always plenty of workable and creative ways to rise above those negative circumstances.

When something in life is unfair, choose to succeed anyway. And make that unfairness so small and insignificant it won't even matter.

-- Ralph Marston