Vladimir I. Shin Doh-Suk Kim Moo Young Kim Jeongsu Kim Enhancement of noisy speech by using improved global soft decision. 1929-1932 2001 INTERSPEECH http://www.isca-speech.org/archive/eurospeech_2001/e01_1929.html conf/interspeech/2001 db/conf/interspeech/interspeech2001.html#ShinKKK01