Skyworks Solutions, Inc.

Evan Michael Albright

Amit Kumar

Michael Jon Wurtz

Mark R Peting

Wai Laing Lee

Deepika Kumari

Thomas Lynn Kuntz

Spencer David Leuenberger

David Lamb

In some embodiments, a method for evaluating headphones during a manufacturing process can include generating a test sound and measuring a response to the test sound from a headphone being evaluated. The method can further include configuring and/or calibrating the headphone based on the measurement. In some embodiments, such a method can be implemented as part of a process for manufacturing of a large number of headphones having active noise cancellation functionality.

Systems, devices and methods related to design and production of active noise cancellation devices

In some embodiments, a calibration circuit for an audio amplification system can include a tone generator configured to provide a tone having a frequency to an input path of an audio amplifier, such that an input signal provided to the audio amplifier includes the tone, a a first sampling circuit configured to sample an output signal at an output node of the audio amplifier, and a second sampling circuit configured to sample the input signal at an input node of the audio amplifier. The calibration circuit can further include a gain adjustment circuit configured to generate a correction signal based on the sampled output signal and the sampled input signal to correct for a gain variation of the audio amplifier.

Gain calibration for audio amplifiers

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Portland, OR, United States of America

Evan Michael Albright