Title:
遅延パケット隠蔽方法および装置
Document Type and Number:
Japanese Patent JP4651194
Kind Code:
B2
Abstract:
A decoder improves delayed packet concealment in a packet network by using two decoder sections. A first decoder section bases its decoding during the concealment phase on erroneous filter states and a set of speech parameters, whereas a second decoder section bases its decoding on saved and updated filter states and the same speech parameters. The outputs of the two decoder sections are thereafter combined to form the final speech signal. This decoding strategy produces a speech signal with smooth transitions from delayed to non-delayed packets and uses information from the most recent packets for speech generation.
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Inventors:
Ekdden, Erik
Svenson, Thomas
Sundokuvist, Jim
Svenson, Thomas
Sundokuvist, Jim
Application Number:
JP2000548987A
Publication Date:
March 16, 2011
Filing Date:
April 28, 1999
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
G10L19/00; G10L19/005; G10L19/12; G10L19/16; H04L1/00; H04L12/56; H04L12/64
Domestic Patent References:
| JP9116571A | ||||
| JP7334191A | ||||
| JP8204712A |
Foreign References:
| WO1997037469A1 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Kuniaki Shimizu
Hayashi Zouzo
Hajime Asamura
Kuniaki Shimizu
Hayashi Zouzo