Rate determination coding
AssigneeMindspeed Technologies, Inc.
InventorHuan-Yu Su
Life of this patent
Estimating the term…
Abstract
A speech encoding system and method for encoding a speech data signal including a number of frames. The speech encoding system includes a speech data rate determinator and a number of speech data signal encoders. The speech data rate determinator determines the data rate of each of the frames and selects one of the speech data signal encoders based on each data rate. Each frame may be encoded using a different encoding method or standard. The encoding system may further include a network controller for selecting any number of the speech data signal encoders based on predetermined factors.
Claims19
A method of enhancing an installed speech coding system that has been in use for encoding a speech signal including a plurality of speech signal frames, said installed speech coding system including a plurality of installed speech encoders, said method comprising the steps of:
- providing a rate determinator module;
- connecting said rate determinator module to said installed speech coding system;
- receiving said plurality of speech signal frames by said rate determinator;
- determining a data rate of one of said speech signal frames by said rate determinator;
- selecting one of said installed plurality of speech encoders according to said data rate on a frame-by-frame basis, said installed plurality of speech encoders including at least a first encoder using a first speech encoding scheme and a second encoder using a second speech encoding scheme, wherein said second speech encoding scheme belongs to a different speech coding standard than said first speech encoding scheme;
- and
- encoding said one of said speech signal frames using said one of said plurality of speech encoders on the frame-by-frame basis;
- wherein said determining, selecting and encoding steps are repeated so as to encode said speech signal on the frame-by-frame basis.
A method of enhancing an installed speech coding system that has been in use for encoding a speech signal including a plurality of speech signal frames, said installed speech coding system including a plurality of installed speech encoders, said method comprising the steps of:
- providing a rate determinator module;
- connecting said rate determinator module to said installed speech coding system;
- receiving said plurality of speech signal frames by said rate determinator;
- choosing, according to a predetermined factor, one group from a plurality of groups of installed speech encoders, said chosen group of installed speech encoders including at least a first encoder using a first speech encoding scheme and a second encoder using a second speech encoding scheme, wherein said second speech encoding scheme belongs to a different speech coding standard than said first speech encoding scheme;
- determining a data rate of one of said speech signal frames;
- selecting, according to said data rate, one of said plurality of installed speech encoders in said chosen group on a frame-by-frame basis;
- and
- encoding said one of said speech signal frames using said selected speech encoder on the frame-by-frame basis;
- wherein said determining, selecting and encoding steps are repeated so as to encode said speech signal on the frame-by-frame basis.
Dependencies are inferred from the claim text.