Method and device for reducing noise in a decoded signal

摘要

A noise suppression process comprising a first decoded signal portion (S CELP) and a second decoded signal portion (S TDAC) which involves determining a first energy envelope generating curve (ENV CELP) and a second energy envelope generating curve (ENV TDAC) of the first signal portion and of the second decoded signal portion. The process then involves forming an identification number (R) depending on a comparison of the first and second energy envelope generating curves, deriving an amplification factor (G) which depends on the identification number. An independent claim is also included for the device e.g. communication equipment.