Bandwidth Extension of Speech Signal Artificially & Transmission & Coding for Wireless Communication

R. N. Rathod; M. S. Holia

Abstract

AbstractIn today’s next generation wireless communication, decoded speech quality at recipient side initiate quiet and slim; mainly recognized to intrinsic band limitation (300-3400 Hz). so as to increase clearness and genuineness of improved speech signal. Narrowband speech coders be supposed to promote to wideband coders supports bandwidth of 50-7000Hz. extensive time duration has been left for advancement from narrowband to fully wideband well-suited systems. Many smart devices at the present support high-quality speech communication services at super-wide bandwidths. Often, however, speech quality is degraded when they are used with networks or devices which lack super-wideband support. Artificial bandwidth extension can then be used to improve speech quality. Wide band improve speech reproduction with no reaching the natural quality offace-to-face exchange or the high quality of professionally recorded speech. now a day's various coding algorithms have been urbanized for SWB (50–14,000 Hz) and FB (20–20,000 Hz) to obtain full benefit of advancement in available telecommunications bandwidth, predominantly for internet. Keywords: Speech coding, Super-wide bandwidth, ABE, Enhanced voice services, Feature ExtractionCite this ArticleRathod RN, Holia MS. Bandwidth Extension of Speech Signal Artificially, and Transmission and Coding for Wireless Communication. Journal of Communication Engineering & Systems. 2019; 9(2): 111–116p.