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

R. N. Rathod, M. S. Holia



In 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 Extraction

Cite this Article

Rathod RN, Holia MS. Bandwidth Extension of Speech Signal Artificially, and Transmission and Coding for Wireless Communication. Journal of Communication Engineering & Systems. 2019; 9(2):


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