GOOGLE LLC (20250124909). ADAPTIVE HOWLING SUPPRESSION FOR ACTIVE NOISE CONTROL SYSTEMS
ADAPTIVE HOWLING SUPPRESSION FOR ACTIVE NOISE CONTROL SYSTEMS
Organization Name
Inventor(s)
Guohua Sun of Santa Clara CA US
Lyle Nitta of Westminster CO US
ADAPTIVE HOWLING SUPPRESSION FOR ACTIVE NOISE CONTROL SYSTEMS
This abstract first appeared for US patent application 20250124909 titled 'ADAPTIVE HOWLING SUPPRESSION FOR ACTIVE NOISE CONTROL SYSTEMS
Original Abstract Submitted
adaptive howling suppression is provided for active noise control (anc) systems of wearable audio components (wacs), such as earbuds, based on detecting whether the wacs are presently being worn. upon first detecting howling, embodiments can pre-suppress the howling audio signature by reducing anc output. then, embodiments detect whether the wac is presently on-ear (worn) or off-ear and attempt to fully suppress the howling using different parameters, based on this detection. for example, if on-ear, embodiments use on-ear tuning settings to cycle through a set of suppression stages until anc output can be restored without howling; if off-ear, embodiments use off-ear tuning settings to cycle through the set of suppression stages until anc output can be restored without howling. once anc output can be restored without howling, the system can be released to a normal idle state.
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