Quadrophonic Stereo
The term Quadrophonic, or Quadraphonic, either are correct, was coined in the early 1970s to describe a four-channel sound presentation used in the recording and broadcast industries.
The speaker placement is frontLeft, frontRight, rearLeft and rearRight (fL,fR,rL,rR), with the listener sitting
Advanced Intelligent Tape
AIT, or Advanced Intelligent Tape, is a high-speed, high-capacity magnetic tape data storage format developed by Sony to compete with the DLT, LTO, DAT/DDS, and VXA formats. AIT uses a dual-reel cassette similar to 8mm Video8 or Exabyte formats.
Super AIT (SAIT) is a higher capacity variant
Loudness
The perceived quality of sound directly correlated to an increase or decrease in amplitude (volume). Loudness is a highly subjective measurement that varies from person to person and is affected by many factors such as frequency, duration and sound pressure levels (SPL). More objective measurements