| The technology of digital signal processing has made great progress with the development of information science and chip technology since it was born in 1960' s.Language is the main method of information exchanging for its directness, naturalness and simpleness. Speech is the physical form of language. The main aim of speech signal processing is speech coding, speech recognition and speech understanding by automaton. In this paper, firstly, some basic signal process are discussed, such as signal filter, sampling, FFT, pitch detection, then, they are tested on the testing board designed by the author. Based on those process algorithms, the other important applications, such as speech coding in GSM system, echo cancellation, speaker recognition, are discussed. At last, the future applications of DSP technology and speech technology are made. |
PDF Full Text Request