Scalable audio encoding and decoding apparatus, method, and...

Details Scalable audio encoding and decoding apparatus, method, and... Scalable audio encoding and decoding apparatus, method, and...

2006-09-28

2011-11-29

Smits, Talivaldis Ivars (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S503000, C704S229000

Reexamination Certificate

active

08069048

ABSTRACT:
Provided is a scalable encoding method, apparatus, and medium. The method includes: encoding a base layer and encoding a first enhancement layer and a second enhancement layer in a frame having the base layer; and generating an encoded frame by synthesizing the encoded results. Accordingly, only if the loss of the encoding frame is not as great as the encoded first enhancement layer is damaged, a case where speech restoration with respect to partial frequency bands must be given up does not occur. Furthermore, since an encoder divides the second enhancement layer into a plurality of layers in a horizontal or vertical direction, considering a distribution pattern of data belonging to the second enhancement layer and first encodes a layer in which lots of data are distributed among the divided layers, loss of audio information can be minimized even if a portion of the encoded second enhancement layer is damaged.

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U.S. Patent Application Publication No. 2006-0116871 (published Jun. 1, 2006), Abstract, Drawing and Claim (3pp only).

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