【英语翻译Speechrecognitionsystemsgenerallyassumethatthespeechsignalisarealisationofsomemessageencodedasasequenceofoneormoresymbols(seeFig.1.1).Toeffectthereverseoperationofrecognisingtheunderlyingsymbolsequence】

　　英语翻译

　　Speechrecognitionsystemsgenerallyassumethatthespeechsignalisarealisationofsomemessageencodedasasequenceofoneormoresymbols(seeFig.1.1).Toeffectthereverseoperationofrecognisingtheunderlyingsymbolsequencegivenaspokenutterance,thecontinuousspeechwaveformisfirstconvertedtoasequenceofequallyspaceddiscreteparametervectors.

　　请问这句话怎么翻译.arealisationof的定语只是somemessage还是somemessageencodedasasequenceofoneormoresymbols这类句子要怎么看呵呵.