@article{oai:nitech.repo.nii.ac.jp:00005952,
 author = {Kubo, Manami and Taniguchi, Junki and Kato, Masashi},
 journal = {Applied acoustics},
 month = {Jul},
 note = {application/pdf},
 pages = {174--182},
 title = {Howling reduction by analog phase-locked loop and active noise control circuits},
 volume = {87},
 year = {2014}
}