Hanchi Chen is a prominent inventor based in San Jose, CA, known for his contributions to audio technology. With a total of 14 patents, Chen has made significant strides in enhancing user experience through innovative sound solutions. His work primarily focuses on adaptive noise cancellation and in-ear electronic devices.

Latest Patents

One of Chen's latest patents is for an adaptive virtual microphone for earbuds. This invention discloses systems and methods for adaptive noise cancellation (ANC) at a virtual microphone located at the eardrum of a wearer of an earphone. The techniques estimate the level of leakiness of ambient noise in the earphone from the magnitude of the gain of the transfer function of the feed forward loop filter of the ANC. Based on the estimated leakiness, the techniques estimate the transfer function of the feed forward loop filter to compensate for the difference in the effect of noise cancellation at the virtual microphone and error microphone. A bias term that represents the difference in the frequency response of the attenuated noise at the virtual and error microphone may be added to the adaptive feed forward algorithm. The ANC operation may apply the bias term to the adaptive feed forward loop filter to reduce the ambient noise at the eardrum rather than at the error microphone.

Another notable patent is for an acoustic vent and protective membrane. This invention comprises an in-ear electronic device that includes an enclosure defining an enclosed space surrounding a microphone and an acoustic opening to the ambient environment. The device features an acoustic pathway with a first end that opens to the acoustic opening and a second end that opens to the microphone, along with a protective membrane positioned between the second end of the acoustic channel and the microphone.

Career Highlights

Hanchi Chen has established himself as a key player in the field of audio technology through his innovative patents. His work at Apple Inc. has allowed him to collaborate with some of the brightest minds in the industry, contributing to advancements in personal audio devices.

Collaborations

Chen has worked alongside talented colleagues, including Esge Brandt Andersen and Vladan Bajic. Their combined expertise has fostered a collaborative environment that drives innovation in audio technology.

Conclusion

Hanchi Chen's contributions to adaptive audio technology exemplify the impact of innovation in enhancing user experiences. His patents reflect a commitment to improving sound quality and functionality in

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