Naoki Koshikawa Takahiro Murakami Toshihisa Tanaka Pitch Shifting of Music Based on Adaptive Order Estimation of Linear Predictor. 40-49 2008 PCM http://dx.doi.org/10.1007/978-3-540-89796-5_5 conf/pcm/2008 db/conf/pcm/pcm2008.html#KoshikawaMT08