近年来,人工智能发展迅速,既有阿尔法狗大胜李世石的高光时刻,亦有不少“人工智障”翻车瞬间。例如,当我们和智能语音机器人通话的时候,可能会出现:停顿、答非所问或直接不回答等等让人暴走的情形,这到底是怎么一回事呢?下面由小文智能来为您解答。
电话机器人通话过程中出现Bug主要原因是它被环境中的其他噪音干扰了,电话机器人无法准确识别,进而影响下一步的判断回复。说到底,这不是机器人听不懂的问题,而是机器人有没有听到、听清楚的问题。
语音库中的语音模板基本上是在无噪声和无混响的环境中采集、转换而成,而实际应用中噪声是无法避免的,这些噪音虽然对我们没影响,但对AI来说,一切声音都将成为干扰:
1、不同语音的交叠
2、远场的混响和噪音干扰
除了噪音的干扰,还有语音的模糊性,发音人的多变性,也给语音识别造成了困难。别小瞧了些许识别率的差异,假设一个识别率是95%,一个是92%,在多轮对话中,语音识别率是相乘关系,那么三轮对话最终的结果是:
95%*95%*95%=86%
92%*92%*92%=78%
只是3%的区别,最终的结果相差了8%!逐轮递减,交互次数越多,影响越大!
电话机器人在智能客服领域应用,还会受到通信传输的影响。在电话信道下,由于信道的衰减、传输的距离较长,音频的质量对ASR文字转录影响很大。完整的语音交互过程分听清、听懂、满足三个步骤,听清排在首位。唯有识别越准确,机器人才能越智能。小文智能自研AI语音技术,拥有领先国内行业的自然语言处理技术,效果有保障。同时针对电话信道下识别效果衰减的问题(手机APP可以达到98%识别率,电话中会衰减到70%左右),我们定制了专门的电话应用识别模型,即使在电话信道下,语音机器人仍然可以保持90%以上的准确率,目前已开放电话机器人在线体验互动对话,欢迎大家来与小文智能电话机器人对话,感受与AI对话的乐趣。
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