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Ａｂｓｔｒａｃｔ

Ｓｐｅｅｃｈｒｅｃｏｇｎｉｔｉｏｎｉｓａｔｅｃｈｎｏｌｏｇｙｔｈａｔｃａｎｅｘｔｒａｃｔｃｈａｒａｃｔｅｒｓｙｍｂｏｌｓｆｒｏｍｔｈｅｓｐｅｅｃｈｓｉｇｎａｌｔｈｒｏｕｇｈｃｏｍｐｕｔｅｒｐｒｏｃｅｓｓｉｎｇ．Ｃｈｉｎｅｓｅｃｏｎｔｉｎｕｏｕｓｓｐｅｅｃｈ

ａｒｅｒｅｃｏｇｎｉｔｉｏｎｓｏｍｅｈａｓｂｅｅｎｉｎｒｅｓｅａｒｃｈｅｄｆｏｒａｌｍｏｓｔ６０ｙｅａｒｓａｔｈｏｍｅａｎｄａｂｒｏａｄ．Ａｌｔｈｏｕｇｈｔｈｅｒｅａｃｈｉｅｖｅｍｅｎｔｓ

ｃｏｎｔｉｎｕｏｕｓ

ｓｐｅｅｃｈｓｐｅｅｃｈｒｅｃｏｇｎｉｔｉｏｎｒｅｓｅａｒｃｈ，ａｔｅｃｈｎｏｌｏｇｉｅｓｃａｌｌｌｏｔｏｆｐｒｏｂｌｅｍｓｎｅｅｄｔｏｂｅＣａｌｌｒｅｓｏｌｖｅｄ．Ｅｘｉｓｔｉｎｇｃｏｍｍｕｎｉｃａｔｅｗｉｍ

ｓｐｅｅｃｈｒｅｃｏｇｎｉｔｉｏｎｎｏｔｒｅａｃｈｔｈｅｔａｒｇｅｔｔｈａｔｈｕｍａｎｍａｃｈｉｎｅｂｙｎａｔｕｒａｌｓｐｅｅｃｈ．Ｌａｒｇｅｖｏｃａｂｕｌａｒｙ，ｓｐｅａｋｅｒ－ｉｎｄｅｐｅｎｄｅｎｔｃｏｎｔｉｎｕｏｕｓ

ｒｅｃｏｇｎｉｔｉｏｎｉｓｓｔｉｌｌｔｈｅｄｉｆｆｉｃｕｌｔｙａｎｄｋｅｙｓｔｏｎｅｏｆｓｐｅｅｃｈｒｅｃｏｇｎｉｔｉｏｎ．

ｃｏｎｔｉｎｕｏｕｓｓｐｅｅｃｈＴｈｅｍａｉｎｓｔｕｄｙｏｆｔｈｉｓｐａｐｅｒｉｓｔｈｅｋｅｙｔｅｃｈｎｏｌｏｇｉｅｓｏｆＣｈｉｎｅｓｅ

ｒｅｃｏｇｎｉｔｉｏｎ．Ｆｉｒｓｔｌｙ

ｏｆｓｐｅｅｃｈｔｈｅｐａｐｅｒｉｎｔｒｏｄｕｃｅｓｔｈｅｐｒｉｎｃｉｐｌｅｓｏｆｓｐｅｅｃｈｒｅｃｏｇｎｉｔｉｏｎ，ｔｈｅｃｏｍｐｏｓｉｔｉｏｎｔｈｅｎｒｅｃｏｇｎｉｔｉｏｎ

ｔｈｅｆｕｎｃｔｉｏｎｓｓｙｓｔｅｍａｎｄａｎｄｔｈｅｂａｓｉｃｋｎｏｗｌｅｄｇｅｏｆＣｈｉｎｅｓｅＳｐｅｅｃｈ．Ａｎｄｉｎｔｒｏｄｕｃｅｓｋｅｙｔｅｃｈｎｏｌｏｇｉｅｓｏｆｐｒｅ－ｐｒｏｃｅｓｓｉｎｇ、ｆｅａｔｕｒｅｅｘｔｒａｃｔｉｏｎ、ｐａｔｔｅｒｎ

ｏｆｓｐｅｅｃｈｍａｔｃｈｉｎｇａｎｄ

ｉｎｖｉｅｗｏｆ

ｆｏｌｌｏｗｓ：ｐｏｓｔ－ｐｒｏｃｅｓｓｉｎｇｅｘｉｓｔｅｄｒｅｃｏｇｎｉｔｉｏｎ．Ｉｍｐｒｏｖｅｄｍｅｔｈｏｄｓｈａｖｅｂｅｅｎｐｒｏｐｏｓｅｄａｒｅａｓｐｒｏｂｌｅｍｓｉｎｔｒａｄｉｔｉｏｎａｌｍｅｔｈｏｄｓ．Ｉｎｔｈｉｓｐａｐｅｒ，ｔｈｅｍａｉｎｗｏｒｋｓ

１）Ａｍｅｄｉｕｍ－ｖｏｃａｂｕｌａｒｙ，ｓｐｅａｋｅｒ－ｉｎｄｅｐｅｎｄｅｎｔＣｌｌｉｎｅｓｅｃｏｎｔｉｎｕｏｕｓｓｐｅｅｃｈ

Ｖｉｓｕａｌｒｅｃｏｇｎｉｔｉｏｎｓｙｓｔｅｍｉｓａｃｈｉｅｖｅｄｏｎａｐｅｒｓｏｎａｌｃｏｍｐｕｔｅｒ，ｕｓｉｎｇＭｉｃｒｏｓｏｆｔ

ｏｎＣ＋＋，ＭＡＴＬＡＢ，ＭｉｃｒｏｓｏｆｉＳＱＬＳｅｒｖｅｒａｎｄｏｔｈｅｒｔｏｏｌｓ，ｅｘｐｅｒｉｍｅｎｔｓａｒｅｍａｄｅ

ｕｎｉｔ，ｔｈｅｔｈｅｓｙｓｔｅｍ．Ｔｈｅｓｙｓｔｅｍｃｈｏｏｓｅｓｔｈｅｉｎｉｔｉａｌａｎｄｆｉｎａｌａｓ

ｔｈｅＤＴＷａｓｒｅｃｏｇｎｉｔｉｏｎＭＦＣＣａｓｆｅａｔｕｒｅｐａｒａｍｅｔｅｒｓ，ａｎｄｕｓｉｎｇｒｅｃｏｇｎｉｔｉｏｎｍｏｄｅｌ．

ａｃｃｕｒａｃｙｏｆＩ／Ｆ２）Ｔｈｅ

ｓｅｇｍｅｎｔａｔｉｏｎ

ｃｏｎｔｉｎｕｏｕｓｓｅｇｍｅｎｔａｔｉｏｎｈａｓｇｒｅａｔｉｎｆｌｕｅｎｃｅｏｎｓｙｓｔｅｍ，ｃｕｒｒｅｎｔＩ／Ｆｍｅｔｈｏｄｓａｃｈｉｅｖｅｈｉｇｈｄｅｇｒｅｅｏｆａｃｃｕｒａｃｙｉｎｎｅｗｍｅｔｈｏｄｎｏｎ ｃｏｎｔｉｎｕｏｕｓｓｐｅｅｃｈ，ｂｕｔｆａｌｌｉｎｏｆｓｐｅｅｃｈ．Ｉｎｔｈｉｓｐａｐｅｒ，ａｂａｓｅｄｏｎｅｎｔｒｏｐｙａｎｄｔｈｅｆｏｒｍａｎｔｅｎｅｒｇｙ

ＦＦ．Ｃｈｉｎｅｓｅｖｏｗｅｌｓｉｓｐｒｏｐｏｓｅｄ，ｗｈｉｃｈｃａｎａｃｃｕｒａｔｅｌｙｓｅｇｍｅｎｔｔｈｅ

ｌｏｎｇ３）Ｔｈｅｓｐｅｅｃｈｒｅｃｏｇｎｉｔｉｏｎｓｙｓｔｅｍ、ⅣｉｔｈｔｈｅｔｒａｄｉｔｉｏｎａｌＤｙｎａｍｉｃＴｉｍｅＷａｒｐｉｎｇｔｅｃｈｎｏｌｏｇｙｈａｓｇｒｅａｔａｍｏｕｎｔｏｆｃａｌｃｕｌａｔｉｏｎａｎｄｒｅｓｐｏｎｓｅ

ｍｅｔｈｏｄｔｉｍｅ．Ｆｏｒｔｈｉｓｉｍｐｒｏｖｅｄ

ａｎｄｍｅｔｈｏｄｓｏｆＤＴＷｍｅｔｈｏｄ

ｃａｎａｌｅｉｎｔｒｏｄｕｃｅｄ：ａｎｉｍｐｒｏｖｅｄｏｎｐｒｏｂｌｅｍ，ｔｗｏｂａｓｅｄｏｎｔｅｍｐｌａｔｅｔｈｒｅｓｈｏｌｄｅｘｐｅｒｉｍｅｎｔｓｓｈｏｗｒｅｓｐｏｎｓｅｔｉｍｅ。ａｎｉｍｐｒｏｖｅｄｂａｓｅｄｆｅａｔｕｒｅｖｅｃｔｏｒｔｈｒｅｓｈｏｌｄ．Ｔｈｅｒｅｓｕｌｔｓｏｆｔｈａｔｔｈｅｎｅｗｍｅｔｈｏｄｓｒｅｄｕｃｅｔｈｅｃａｌｃｕｌａｔｉｏｎｔｉｍｅａｎｄｉｍｐｒｏｖｅｔｈｅ

Ｋｅｙｗｏｒｄｓ：ＳｐｅｅｃｈＲｅｃｏｇｎｉｔｉｏｎ，ＥｎｄｐｏｉｎｔＤｅｔｅｃｔｉｏｎ，ＭｅｌＦｒｅｑｕｅｎｃｙＣｅｐｓｔｒａｌＣｏｅｆｆｉｃｉｅｎｔ

（ＭＦＣＣ），ＤｙｎａｍｉｃＴｉｍｅＷａｒｐｉｎｇ（Ｄｎ聊１１