DIFF Subgroup
G10L 21/04 Time compression or expansion
Introduced: January 2000
Full Title
Full titles differ between systems:
IPC:
Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility > Time compression or expansion
CPC:
Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility (G10L19/00 takes precedence) > Time compression or expansion
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
IPC defines codes here since 2013.
Child Classifications
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- G10L 21/055 for synchronising with other signals, e.g. video signals since 2013 IPC+CPC Available in IPC and CPC