@conference{bai2005dsp, title = {DSP-based Sensorless Velocity Observer with Audio Applications in Loudspeaker Compensation}, author = {Bai, Mingsian and Lee, Chih-chung}, booktitle = {Audio Engineering Society Convention 118}, month = {May}, year = {2005}, url = {https://www.aes.org/e-lib/browse.cfm?elib=13140} }