Digital audio engineers appropriated observations made by Harry Nyquist in 1928 on the subject of telegraph transmission. Nyquist's observations pertained to characterizing symbols only, not to characterizing continuous audio content. Digital technology developers made a wholly unjustified leap when they said, as does Advanced Digital Audio, K. Pohlmann, ed., Sams Publications, 1991, p. 33: "Although Nyquist proposed his result in terms of telegraph transmission, the result is equally valid for any kind of digital data transmission, including, of course, digital audio." Nyquist described "completely characterizing" telegraph code. Continuous audio is not completely characterized by intermittent samples.
No comments:
Post a Comment