Simple multifrequency-tone detector

• 19 October 1972
• journal article
• Published by Institution of Engineering and Technology (IET) in Electronics Letters
• Vol. 8  (21) , 524-525
• https://doi.org/10.1049/el:19720382

Abstract

Keywords

• MULTIFREQUENCY DETECTOR
• TOUCH TONE RECEIVER
• DIGITALLY ENCODED MULTIFREQUENCY TONES
• PCM
• TELEPHONE NETWORKS
• DIGITAL FILTERS
• SIGNALLING
• ROM
• SIGNAL DETECTION