Accurate hidden Markov models for non-audible murmur (NAM) recognition based on iterative supervised adaptation

P. Heracleous, Y. Nakajima, A. Lee, H. Saruwatari, K. Shikano
2003 IEEE Workshop on Automatic Speech Recognition and Understanding (IEEE Cat. No.03EX721)  
In previous works, we introduced a special device (Non-Audible Murmur (NAM) microphone) able to detect very quietly uttered speech (murmur), which cannot be heard by listeners ne紅 白e taJker. Experimental results showed the efficiency of白e device in NAM recognition. Using normal-speech monophone hidden
doi:10.1109/asru.2003.1318406 fatcat:ysirga5hizg3hdewbtschb4izm