CONTROLLING LOUDNESS OF SPEECH IN SIGNALS THAT CONTAIN SPEECH AND OTHER TYPES OF AUDIO MATERIAL
Application 1936/KOLNP/2004 published 2006-08-11, filed 2004-12-16
An indication of the loudness of an audio signal containing speech and other types of audio material is obtained by classifying segments of audio information as either speech or non-speech. The loudness of the speech segments is estimated and this estimate is used to derive the indication of loudness. The indication of loudness may be used to control audio signal levels so that variations in loudness of speech between different programs is reduced. A preferred method for classifying speech segments is described. (FIG. 4)
Applicant
DOLBY LABORATORIES LICENSING CORPORATION
100 POTRERO AVENUE, SAN FRANCISCO, CA 94103-4813, UNITED STATES OF AMERICA
Inventor
VINTON MARK STUART; ROBINSON CHARLES QUITO; GUNDRY KENNETH JAMES; VENEZIA STEVEN JOSEPH; RIEDMILLER JEFFREY CHARLES
International Info
Classification: G10L 11/00
Publication Number: WO 04/021332
Application Date: 2003-08-15
Priority Information
10/233,073 USA 2002-08-30