我想知道阿里语音AI中每段数据流的前五个字符是什么意思，代表的进度还是长度还是什么？

可以正常播放了，组合的的时候每段数据流的前5个字符和结尾的一个字符丢掉，合并声音就对了。我是把异步生成，和实时生成的数据对比，发现每段的数据流丢掉前5后1就，数据就一样了。我想知道阿里语音AI中每段数据流的前五个字符是什么意思，代表的进度还是长度还是什么？
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字节集:702{0,184,2,71,253,255,243,72,196,0,27,67,38,40,3,70,24,2,13,246,143,119,176,3,11,39,119,123,226,238,238,238,247,187,187,191,238,136,157,119,61,221,253,17,63,66,255,221,221,221,220,255,235,187,191,252,47,119,0,0,0,76,56,24,179,119,3,3,115,250,136,137,253,112,1,4,238,239,160,24,183,63,68,71,119,127,255,119,127,255,244,79,243,209,17,61,0,192,220,226,34,35,159,255,255,255,187,128,0,8,12,23,7,193,0,64,16,113,64,64,16,119,255,136,14,40,16,22,221,118,187,93,176,215,109,97,209,74,164,58,31,33,10,61,51,192,37,162,36,255,243,72,196,22,34,243,142,222,95,136,88,2,18,16,135,207,125,186,173,239,166,51,124,86,76,38,177,89,255,234,190,94,189,211,255,103,211,224,152,114,83,99,26,120,171,254,94,104,247,190,147,137,255,246,45,5,140,255,147,86,168,219,44,151,180,227,231,109,94,207,52,103,255,249,44,8,202,77,107,126,199,217,189,110,181,166,39,235,251,127,127,255,239,183,29,98,9,26,85,179,102,195,251,116,43,158,62,187,62,247,191,255,253,159,253,249,227,71,146,215,218,124,187,234,128,90,25,56,206,93,219,42,246,219,97,10,64,133,82,200,37,130,135,255,243,72,196,13,31,115,234,210,93,193,40,1,38,70,68,25,29,118,222,65,53,232,143,183,167,183,255,207,234,232,177,117,109,82,213,56,130,28,78,163,6,139,157,148,96,233,50,114,94,101,58,141,18,12,8,131,8,1,0,166,75,51,146,141,218,237,236,187,157,152,208,212,65,68,19,48,226,16,172,170,200,123,165,179,19,217,103,118,40,193,0,16,58,236,19,22,66,156,170,241,131,93,88,73,245,69,69,125,103,43,15,117,23,14,34,138,12,81,65,37,29,2,72,125,85,190,219,100,154,218,201,32,255,14,198,49,10,86,125,34,109,134,236,255,243,72,196,18,32,227,106,222,90,96,203,50,225,56,241,135,215,124,113,188,197,105,235,233,94,212,69,195,21,128,213,243,196,88,46,48,96,174,103,177,150,128,202,4,103,53,138,28,41,151,254,135,124,34,183,110,46,83,153,174,225,144,80,89,36,125,18,223,111,88,137,74,56,32,7,150,117,86,161,94,141,111,255,20,67,138,12,24,203,139,33,39,42,216,88,80,147,59,60,139,178,15,36,227,70,210,166,247,115,89,234,99,137,133,83,34,237,99,17,113,51,128,49,49,62,149,181,54,156,146,218,137,8,129,154,15,89,159,167,225,194,100,78,255,243,72,196,17,31,3,222,226,90,121,132,214,69,143,224,63,219,202,170,31,238,171,98,1,175,44,251,205,172,198,72,8,252,18,90,164,38,70,35,150,47,101,210,218,100,37,172,248,246,49,52,191,95,114,108,123,49,93,10,97,99,11,32,99,145,76,232,174,143,100,158,212,90,162,4,25,136,114,182,223,244,182,157,124,67,186,24,166,42,104,245,77,106,223,210,239,151,86,188,227,58,114,47,215,86,178,255,109,14,139,122,74,178,130,21,48,194,181,146,0}
0,184,2,71,253,这个是字符的