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DIFF Subgroup
G10L 25/03

characterised by the type of extracted parameters

Introduced: January 2013

Full Title

Full titles differ between systems:

IPC:

Speech or voice analysis techniques not restricted to a single one of groups > characterised by the type of extracted parameters

CPC:

Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 (muting semiconductor-based amplifiers when some special characteristics of a signal are sensed by a speech detector, e.g. sensing when no signal is present, H03G3/34) > characterised by the type of extracted parameters

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

IPC defines codes here since 2013.

Child Classifications

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  • G10L 25/06 the extracted parameters being correlation coefficients since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/09 the extracted parameters being zero crossing rates since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/12 the extracted parameters being prediction coefficients since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/15 the extracted parameters being formant information since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/18 the extracted parameters being spectral information of each sub-band since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/21 the extracted parameters being power information since 2013 IPC+CPC Available in IPC and CPC
  • G10L 25/24 the extracted parameters being the cepstrum since 2013 IPC+CPC Available in IPC and CPC