Patent application 14075815 (US), filed 2013-11-08
Publication number: US20140067384A1
Title: METHOD AND APPARATUS FOR CANCELING VOCAL SIGNAL FROM AUDIO SIGNAL
CPC codes: G10L  21/0272
H04R   3/04
H04S   1/00
G01L  21/02
G10K  15/04
Office action: rejection, dated 2015-10-15
Rejection reasons: obviousness_103
subject_matter_101
double_patenting
Prior art cited: ref_id: 0068379
ref_type: patent
severity: obviousness
ref_id: KR 10-063248
ref_type: patent
severity: obviousness
Final disposition: pending (2015-10-15)