IMBE

• Company: Digital Voice Systems Inc.
• Patents: US#5870405 (codec description)

Improved Multi Band Excitation (IMBE) is a proprietary speech codec used in government and commercial digital radio applications. The codec was developed in the early 90s.

References:

• ANSI/TIA/EIA 102BABA-1998, "Association of Public Safety Communications Officials (APCO) Project 25 Vocoder Description".