Voice compression method for civil aviation control based on sparse code
Qiu Yan-li · Shenyang Gongye Daxue xuebao · 2014
Aiming at the problems that the domestic traffic control voice communication capacity has dramatically increased,a voice compression method based on sparse code was proposed in order to find out a compression method with narrower bandwidth and better voice quality. The specific derivation process was given,which was compared and analyzed with the traditional voice compression methods. Through evaluating and simulating the voice quality before and after coding,it is noted that the voice similarity is higher before and after coding and decoding with the proposed method bases on the sparse code. Moreover, the proposed method has such advantages as high voice quality,lowtransmission bit rate,short delay and lowcomplexity,which can better meet the requirement of narrowband transmission for the air traffic satellite and ensure the safety of air traffic.