Patent ID: 9166546
Filing Date: 2015-10-20
Classification: G10L,H03G,H04R

Abstract:
1. An apparatus for processing an input sound signal comprising: gain circuitry configured to control a common gain based on a plurality of respective sub-signals of the input sound signal, wherein the gain control circuitry comprises (1) a plurality of envelope detection circuits configured, wherein each envelope detection circuit is configured to determine a provisional envelope based on one of the plurality of sub-signals, (2) for each provisional envelope, a slow-gain circuit configured to produce a processed envelope, (3) a level-combine circuit configured to generate a level signal by analyzing each processed envelope, and (4) a fast-gain rule circuit configured to determine the common gain based on the level signal; and an amplification apparatus configured to adjust the amplification of all the plurality of amplitudes based on the common gain.