US 6,795,805 B1
Periodicity enhancement in decoding wideband signalsGeneral
US 6,795,805 B1
Periodicity enhancement in decoding wideband signals
Tech Center:
2600 Communications
Examiner:
Doris H. To
Art Unit:
2655 Videophones and Telephonic Communications; Audio Signals; Digital Audio Data Processing; Linguistics, Speech Processing and Audio Compression
Agent:
Inventors:
Bruno Bessette; Redwan Salami; Roch Lefebvre
Assignee:
Priority:
10/27/98
Filed:
10/27/99
Granted:
09/21/04
Expiration:
10/27/19
Abstract
An alternative approach by which periodicity enhancement of an excitation signal is achieved through filtering an innovative codevector by an innovation filter to reduce low frequency content of the innovative codevector and enhance the periodicity at low frequencies more than high frequencies.