Speech classification or search

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Speech recognition > Speech classification or search

CPC:

Speech recognition (G10L17/00 takes precedence) > Speech classification or search

Of 10 combined children, 5 exist in both systems.

5 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

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G10L 15/083 CPC only CPC only
G10L 15/10 using distance or distortion measures between unknown speech and reference templates since 2000 IPC+CPC Available in IPC and CPC
G10L 15/12 using dynamic programming techniques, e.g. dynamic time warping [DTW] since 2000 IPC+CPC Available in IPC and CPC
G10L 15/14 using statistical models, e.g. Hidden Markov Models [HMMs] (G10L15/18 takes precedence) since 2000 +1 CPC IPC+CPC Available in IPC and CPC
G10L 15/16 using artificial neural networks since 2000 IPC+CPC Available in IPC and CPC
G10L 15/18 using natural language modelling since 2000 +3 CPC IPC+CPC Available in IPC and CPC
G10L 2015/081 2nd only CPC only CPC only
G10L 2015/085 2nd only CPC only CPC only
G10L 2015/086 2nd only CPC only CPC only
G10L 2015/088 2nd only CPC only CPC only