O - Used Lighting, Audio, Staging & Video

Alternating Current - An alternating current (AC) is an electrical current where the magnitude and direction of the current varies cyclically, as opposed to direct current, where the direction of the current stays constan. Used Audio. t. The usual waveform of an AC power circuit is a sine wave, as this results in the most efficient transmission of energy. However in certain applications different waveforms are used, s. Used Audio. uch as triangular or square waves.

Used generically, AC refers to the form in which electricity is delivered to businesses and residences. However, audio and radio signals carried on electrical wire ar

Analog to Digital Converter - In electronics, an analog-to-digital converter (abbreviated ADC, A/D, or A to D) is a device that converts continuous signals to discrete digital numbers. Typically, an ADC converts a voltage to a di. Used Audio. gital number. The digital to analog converter or DAC performs the reverse operation. . Used Audio.

Compression and Dynamics - Compression is the reduction of the dynamic range of a sound to avoid unintentional changes and increases in the amplitude. Compression is generally used to make an audio signal sound louder without i. Used Audio. ncreasing its peak amplitude. By compressing or limiting the peak signals, it becomes possible to increase the overall volume of the signal without exceeding the dynamic limits of a devi. Used Audio. ce or medium. This causes quiet sounds to become louder, while louder sounds remain unchanged....

Acoustics - Acoustics is a branch of physics and is the study of sound, mechanical waves in gases, liquids, and solids. A scientist who works in the field of acoustics is an acoustician. The application of acoust. Used Audio. ics in technology is called acoustical engineering. There is often much overlap and interaction between the interests of acousticians and acoustical engineers.

"... acoustic. Used Audio. s is characterized by its reliance on combinations of physical principles drawn from other sources; and that the primary task of modern physical acoustics is to effect a fusion of the principles normally adhering t...

Amplifier - The amplifier can be considered to be any device that uses a small amount of energy to control a larger amount, although the term today usually refers to an electronic amplifier. The relationship of t. Used Audio. he input to the output of an amplifier — usually expressed as a function of the input frequency — is called the transfer function of the amplifier, and the magnitude of the transfer func. Used Audio. tion is termed the gain. There are numerous types of electronic amplifier depending upon the application....