worldradiohistory.com: Stereo Review 1991-03 Citat: "...Understanding Dolby S noise reduction....It is difficult to achieve high levels of noise reduction without audible artifacts. Dolby S was designed specifically to minimize such problems, as well as those that can arise from errors in the alignment of the tape deck or the noise reduction system, yet still provide greater noise reduction than Dolby B or Dolby C...Dolby Laboratories requires that recorders containing Dolby S circuitry conform to more stringent specications for head-azimuth alignment, head height, and wow-and-flutter than it requires for Dolby B or Dolby C and that the decks provide increased headroom in their electronics and wider frequency response. These higher standards, combined with S-type noise reduction, amount to a significant advance in analog cassette technology....", backup
worldradiohistory.com: Stereo Review 1991-03 Citat: "...Understanding Dolby S noise reduction....It is difficult to achieve high levels of noise reduction without audible artifacts. Dolby S was designed specifically to minimize such problems, as well as those that can arise from errors in the alignment of the tape deck or the noise reduction system, yet still provide greater noise reduction than Dolby B or Dolby C...Dolby Laboratories requires that recorders containing Dolby S circuitry conform to more stringent specications for head-azimuth alignment, head height, and wow-and-flutter than it requires for Dolby B or Dolby C and that the decks provide increased headroom in their electronics and wider frequency response. These higher standards, combined with S-type noise reduction, amount to a significant advance in analog cassette technology....", backup
