公开(公告)号：SG108862A1

公开(公告)日：2005-02-28

申请号：SG200204487

申请日：2002-07-24

Applicant: ST MICROELECTRONICS ASIA

Inventor： MOHAMMED JAVED ABSAR ,  SAPNA GEORGE

IPC: G10L19/025 ,  G10L19/02

Abstract: A method of parametrically encoding a transient audio signal, including the steps of: (a) determining a set V of the largest N frequency components of the transient audio signal, where N is a predetermined number; (b) determining an approximate envelope of the transient audio signal; and (c) determining a predetermined number P of samples W of the approximate envelope for generating a spline approximation of the approximate envelope; whereby a parametric representation of the transient audio signal is given by parameters including V, N, P and W, such that a decoder receiving the parametric representation can reproduce a received approximation of the transient audio signal.