Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Apparatus and method for identifying speech and call-progression signals

Apparatus and method for identifying speech and call-progression signals

US Patent 5319703 · Granted Jun 7, 1994

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Adaptive efficient single/dual tone decoder apparatus and method for identifying1994
Compression and expansion technique for digital audio data1992