ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
G10L0019200000 using sound class specific coding, hybrid encoders or object based coding 1
G10L0019220000 Mode decision, i.e. based on audio signal content versus external parameters 1
G10L0019240000 Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding 1
G10L0019260000 Pre-filtering or post-filtering 1
G10L0021000000 Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility (G10L0019000000 takes precedence);; 1
G10L0021003000 Changing voice quality, e.g. pitch or formants 1
G10L0021007000 characterised by the process used 1
G10L0021010000 Correction of time axis 1
G10L0021013000 Adapting to target pitch 1
G10L0021020000 Speech enhancement, e.g. noise reduction or echo cancellation (reducing echo effects in line transmission systems H04B0003200000; echo suppression in hands-free telephones H04M0009080000) 1
G10L0021020800 Noise filtering 1
G10L0021021600 characterised by the method used for estimating noise 1
G10L0021022400 Processing in the time domain 1
G10L0021023200 Processing in the frequency domain 1
G10L0021026400 characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques 1