IMPROVED TONE DETECTOR
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-13
This paper describes a way to allow some simple hardware to be used to distinguish between very tightly spaced frequencies or tone signals. The hardware is purely digital in operation and can be programmed for a multitude of various tones with spacings as low as perhaps 5hz. This idea could also be used to distinguish between any tightly spaced baud rates for binary codes.