MAP RATE DETECTION FOR VARIABLE RATE CODEC

Title:

MAP RATE DETECTION FOR VARIABLE RATE CODEC

Document Type and Number:

Japanese Patent JP2001024524

Kind Code:

A

Abstract:

To obtain a method for determining the data rate of encoded data.

Signals to be encoded in encoded data are detected and these signals are expressed as digital values corresponding to observable parameters of signals determined and detected in each of continuous time sequences. An instruction for executing a pair of likelihood functions corresponding to the encoded data is provided. Each likelihood function pair corresponds to one of the plurality of data rates and the probability of appearance of data encoded by one of the plurality of data rates is provided by using a hypothesis previously determined and evaluated for the appearance of an observable variable. A digital signal processor(DSP) is used for executing an instruction by using digital values as data for the instruction and determining the data rate of the encoded data.

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Inventors:

GUTIERREZ ALBERTO JR
LEE YUAN KANG
MANDYAM GIRIDHAR D

Application Number:

JP2000174431A

Publication Date:

January 26, 2001

Filing Date:

May 08, 2000

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Assignee:

TEXAS INSTRUMENTS INC

International Classes:

G10L19/12; G10L19/00; G10L19/22; H03M7/30; H03M13/39; H04L1/00; H04L1/08; H04L29/08; (IPC1-7): H03M13/39; G10L19/12; G10L19/00; H03M7/30; H04J13/00; H04L29/08

Attorney, Agent or Firm:

Akira Asamura (3 outside)

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