CPC 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)
Filing statistics
CPC G10L 19/00 belongs to the parent subclass G10L, which recorded 175,043 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,834 in 2013 to 17,369 in 2023 (+122%), peaking at 21,895 applications in 2020. The most active applicants in class G10 are SAMSUNG ELECTRONICS COMPANY (6,277 applications), GOOGLE (5,429 applications) and FRAUNHOFER (4,984 applications).
Source: EPO PATSTAT, worldwide filings
10 direct subcodes
Child Classifications
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- G10L 19/002 Dynamic bit allocation (for perceptual audio coders G10L19/032)
- G10L 19/005 Correction of errors induced by the transmission channel, if related to the coding algorithm
- G10L 19/008 Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
- G10L 19/012 Comfort noise or silence coding
- G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
- G10L 19/02 using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L 19/04 using predictive techniques
Top Applicants
Top 10 applicants by patent filingsfor class G10, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 6,277
- GOOGLE US 5,429
- FRAUNHOFER DE 4,984
- SONY CORPORATION JP 2,808
- HUAWEI TECHNOLOGIES COMPANY CN 2,577
- MICROSOFT TECHNOLOGY LICENSING US 2,382
- DOLBY LABORATORIES LICENSING CORPORATION US 2,123
- QUALCOMM US 2,117
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,049
- AMAZON TECHNOLOGIES US 1,924