Abstract
Along with the development of modern correspondence, the numeral turns increasingly daily life of permeating people, the people's need to various multi-media business increases increasingly, we are enjoying numeral to turn the convenience for bringing with fast, the satellite television, numerical television, various figures music product is changing our lifes. Hence request to get more better audio frequency product kimono duty then Numerical voice conduct and actions a kind of saving, handle and deliver high fidelity voice of method, Be consuming an electronics, professional voice etc. numerous realms have already got extensively applied. For acquiring enough big high to output power, have to adopt high power enlarger. High power's characteristics of the enlarger is greatly to output powers and the efficiency is high. We here what to need is a small signal low power to enlarge, so adopt AN enlarger. The exportation electric circuit of the AN enlarger has strange time wave of offset to lose really, and AN enlarger the pipe works always inside on-line sex curve, the transistor is from the jump from be placed in to lead an appearance eventually. There fore, the nonexistent switch loses really with hand over to lose to really wait a problem more. The AN enlarger keeps the work appearance of big electric current always. So ascend and descend to the hair orotund moment ability the reflects soon. As a result output power to take place a nasty upheaval to turn, the power supply electric current changes extremely minute. Being driven strongly by this kind of can acquire hi-fi easily to pushing loudspeaker of heavy put result. The thesis aims at currently a part of parameter audio frequencies to code a sound source, the model appears under the high sample rate of various problem carry on an improvement, putting forward 1 kind but to the coding system of the parameter audio frequency of 44.1 KHzs/48 KHzs high sample rate audio frequency signal, using can look after both sides a code rate and sound quality effectively of many resolution sine model with many models. Blend various advantages of the coding project of the parameter audio frequencies in the meantime, carried on adjustment on the coder structure, have to a certain signal more the mold piece of[with] coding result, if wave structure analytical transformation short time of the mold piece, double the composition examine and double the transformation short time mold piece etc. is an options to bring into coder, from user while coding according to small together source voice document of small together characteristics, decide whether use and how use, but these vivid constitutions can through a code flow in define several good to mark ratio in advance tell a decoding machine especially, constituting decoding machine is little with complications to without direct influence.
Keyword: Mix to ring,Have another heavy mix to ring,Audio frequency
