Each 3 dB increase in volume level requires double the amplifier power. The part of a speaker driver that moves, producing the sound. Each diaphragm is directly connected to a voice coil . The diaphragm for a woofer is a cone, while for a tweeter, it's often a dome. Diffusion The scattering of sound.
Diffusion reduces the sense of direction of a sound source, a useful quality in surround speakers.
A special processor circuit that is designed to perform complex operations on audio waveforms. This specialization permits sophisticated sounds to be produced rapidly and efficiently. This architecture may be compared with video and graphic processor circuits that have been used to accelerate and improve video output. DSP is used in sound cards, or audio equipment to create soundfields which are electronic or digitally synthesized acoustical environments for audio enhancement, and to create time delays and for precise steering of multi-channel Dolby Pro Logic information. A new format for storing audio and visual data.