Low speed speech encoding method based on Internet protocol

Details Low speed speech encoding method based on Internet protocol Low speed speech encoding method based on Internet protocol

2005-09-20

2005-09-20

Ometz, David L. (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S220000, C704S223000, C370S352000, C709S238000

Reexamination Certificate

active

06947887

ABSTRACT:
A low speed encoding method based on Internet protocol (IP) includes the steps of determining speech characteristic parameters in TN duration, determining an optimized frame length T for successive speech data processing according to the characteristic parameters, making compressed encoding of the speech data in every T, assembling a packet of the encoded bits with TCP and UDP, again assembling a packet of the assembled bits with IP, and finally outputting the channel. The method uses a single frame, variable length frame, intra-frame adaptive low speed speech encoding method, which has the advantages of reducing the bit rate and raising transmission efficiency. The method takes an optimized length encoded frame as a unit to break the IP datagram, and therefore raises encoding and decoding quality of the speech data greatly. Informal tests show that the method can raise a MOS (mean opinion score) value from 0.1 to 0.2.

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