If you are looking for a video editor in Miami. Do not look any further. Contact CAVSI at (786)220-1752 or (305)407-8472

CAVSI offers video editing services. Freelance video editor will work with you to achieve the video you have in your mind....

Call CAVSI at (786)220-1752 or (305)407-8472

Slideshows are awesome for weddings, you can show a great picture slideshow at your wedding,  reception or rehearsal....

Your time is valuable. Let CAVSI work for you. Phones (786)220-1752 or (305)407-8472

VHS to DVD conversion services $15...

If you are looking for a place where to rent a projection screen in Miami, you can contact CAVSI at (786)220-1752 or (305)407-1229.

Rent a projection screen is a great idea for special events as conferences, weddings, shows and more....

Looking for a 3000 lumens-projector rental for an audience between 75 to 200 people?

You can rent a projector with CAVSI, located in Miami. Phone (786)220-1752...

CAVSI is located in Miami and offers projector rentals. Phone (786)220-1752

For information about projector rentals visit:...

Simultaneous Interpretation (SI) systems involve the immediate translation of one language to another. These systems involve at least two professional translators and some electronic equipment for each language. The speaker or presenter using the primary language speaks into a microphone. This transmits sound to a translator in a soundproof booth, wearing a pair of headphones. This sound is translated and is then carried (via wires or infrared signals) to audience listeners wearing headphones....

Inside the Oktava 319 condenser microphoneIn a condenser microphone, also known as a capacitor microphone, the diaphragm acts as one plate of a capacitor, and the vibrations produce changes in the distance between the plates. There are two methods of extracting an audio output from the transducer thus formed: DC-biased and RF (or HF) condenser microphones. With a DC-biased microphone, the plates are biased with a fixed charge (Q). The voltage maintained across the capacitor plates changes with the vibrations in the air, according to the capacitance equation (C = Q / V), where Q = charge in coulombs, C = capacitance in farads and V = potential difference in volts. The capacitance of the plates is inversely proportional to the distance between them for a parallel-plate capacitor.

A nearly constant charge is maintained on the capacitor. As the capacitance changes, the charge across the capacitor does change very slightly, but at audible frequencies it is sensibly constant. The capacitance of the capsule and the value of the bias resistor form a filter which is highpass for the audio signal, and lowpass for the bias voltage. Note that the time constant of an RC circuit equals the product of the resistance and capacitance. Within the time-frame of the capacitance change (on the order of 100 μs), the charge thus appears practically constant and the voltage across the capacitor changes instantaneously to reflect the change in capacitance. The voltage across the capacitor varies above and below the bias voltage. The voltage difference between the bias and the capacitor is seen across the series resistor. The voltage across the resistor is amplified for performance or recording....

Oftentimes in audio systems it becomes necessary to take an audio signal and send it to two or more places. Just connecting the devices together may either load the signal down, or cause other undesirable anomalies.

A distribution amplifier is an amplifier that accepts a signal at its input, and distributes the signal to two or more outputs. Each output is therefore isolated from the other, to a greater or lesser degree depending on the type and circuitry....

The purpose of noise masking systems is, simply, to mask noise. In the quiet, non-reverberant office spaces, conversations can be unintentionally overheard; invading privacy and mechanical or man-made noises can become disruptive to the work effort. When properly installed and balanced, the noise masking system makes these noises less noticeable. This can increase efficiency of the workforce as well as privacy.

Direct sound, so important for speech intelligibility in paging or reinforcement systems, is undesirable in masking systems. Loudspeakers, completely separate from paging loudspeakers, are throughout the area. They are sometimes oriented horizontally to improve dispersion and avoid a spatial concentration of volume. When used properly, employees will not notice the installation at all, just that disruptive noises seem to be less noticeable....