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PCE
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DIFF Main Group
G10L 19/00

Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (in musical instruments G10H)

Introduced: January 2000

Title

Titles differ between systems:

IPC: Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

CPC: Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (in musical instruments G10H)

Full Title

Full titles differ between systems:

IPC:

Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

CPC:

Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (in musical instruments G10H)

Of 10 combined children, 7 exist in both systems.

3 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G10L 19/0017 CPC only CPC only
  • G10L 19/0018 CPC only CPC only
  • G10L 19/002 Dynamic bit allocation (for perceptual audio coders G10L19/032) since 2013 IPC+CPC Available in IPC and CPC
  • G10L 19/005 Correction of errors induced by the transmission channel, if related to the coding algorithm since 2013 IPC+CPC Available in IPC and CPC
  • G10L 19/008 Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing since 2013 IPC+CPC Available in IPC and CPC
  • G10L 19/012 Comfort noise or silence coding since 2013 IPC+CPC Available in IPC and CPC
  • G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal since 2013 IPC+CPC Available in IPC and CPC