CPC Subgroup
G10L 21/0316 by changing the amplitude
Full Title
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) > Speech enhancement, e.g. noise reduction or echo cancellation (reducing echo effects in line transmission systems H04B3/20; echo suppression in hands-free telephones H04M9/08) > by changing the amplitude
3 direct subcodes
Child Classifications
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- G10L 21/0324 Details of processing therefor
- G10L 21/0356 for synchronising with other signals, e.g. video signals
- G10L 21/0364 for improving intelligibility