Title:
【発明の名称】音響信号から導かれた電気信号を区分する方法及び装置
Document Type and Number:
Japanese Patent JP2527168
Kind Code:
B2
Abstract:
An accordance with the method a number of parameters, for example "log area" parameters, are derived as a function of time from the electric signal (block 2); for consecutive instants the signals of the parameters located within a time interval around each instant are taken up and transition functions (0i) are derived therefrom for each instant (block 3). Subsequently similarity factors (cij) are determined each between two transition functions (0i and 0j) associated with respective proximate instants (i and j) (block 4) and a replacing transition function (0ij) is derived (block 6) from the transition functions of at least one group of two transition functions for which the associated similarity factor is larger than a reference value V, the said transition function (0ij) replacing the aforementioned transition functions from which it is derived (block 7).
A combined transition function (0ij) replacing one of these transition functions is preferably calculated from the aforementioned transition functions, while the other of these transition functions are omitted.
Furthermore the group of transition functions for which the similarity factor is largest is preferably taken (block 5).
The method is subsequently repeated (Fig. 1).
The transition functions obtained in accordance with the method are very suitable for use in the transmission or recognition of speech signals and for coding diphones.
Inventors:
Stephen Michael Marx
Application Number:
JP28162886A
Publication Date:
August 21, 1996
Filing Date:
November 26, 1986
Export Citation:
Assignee:
Philips Electronics Nemrose Fennaught Shap
International Classes:
G10L15/02; G10L15/04; (IPC1-7): G10L9/00
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)