G10L 21/00 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
Introduced: January 2000
Last revised: January 2013
Classification Context
- Section:
- PHYSICS
- Class:
- MUSICAL INSTRUMENTS; ACOUSTICS
- Subclass:
- SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
Filing statistics
IPC G10L 21/00 belongs to the parent subclass G10L, which recorded 174,065 patent applications worldwide between 2013 and 2023. Annual filings grew from 8,115 in 2013 to 18,565 in 2023 (+129%), peaking at 21,649 applications in 2020. The most active applicants in class G10 are SAMSUNG ELECTRONICS COMPANY (5,218 applications), GOOGLE (4,644 applications) and FRAUNHOFER (4,601 applications).
Source: EPO PATSTAT, worldwide filings
Additional Content
Glossary
viseme visemes a visual representation of the mouth, lips, tongue and teeth corresponding to a phoneme
Limiting references
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
4 direct subcodes
Child Classifications
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- G10L 21/003 Changing voice quality, e.g. pitch or formants
- G10L 21/02 Speech enhancement, e.g. noise reduction or echo cancellation
- G10L 21/04 Time compression or expansion
- G10L 21/06 Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
Top Applicants
Top 10 applicants by patent filingsfor class G10, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 5,218
- GOOGLE US 4,644
- FRAUNHOFER DE 4,601
- SONY CORPORATION JP 2,380
- HUAWEI TECHNOLOGIES COMPANY CN 2,179
- YAMAHA CORPORATION 2,120
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 1,974
- MICROSOFT TECHNOLOGY LICENSING US 1,916
- AMAZON TECHNOLOGIES US 1,866
- DOLBY LABORATORIES LICENSING CORPORATION US 1,843