Wireless noise-cancelling earplug
AssigneeQon Oy
InventorsJanne Kyllönen, Matti Nisula, Pekka Sarlund
Life of this patent
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Abstract
A wireless noise-cancelling earplug includes a housing within which at least an active noise cancellation (ANC) circuit for producing anti-noise, a speaker for emitting the anti-noise as a sound wave, and a battery for powering at least the ANC circuit. The earplug further includes an audio cavity for guiding the sound wave from the speaker out of the earplug, at least one microphone for measuring ambient noise and feeding the measured ambient noise to the ANC circuit, and a passive noise reduction unit for blocking ambient noise.
Claims15
A wireless noise-cancelling earplug comprising a housing within which at least an active noise cancellation ANC circuit for producing anti-noise, a speaker for emitting the anti-noise as a sound wave, and a battery for powering at least the ANC circuit are arranged;
- the earplug further comprising an audio cavity for guiding the sound wave from the speaker out of the earplug, at least one microphone for measuring ambient noise and feeding the measured ambient noise to the ANC circuit, and a passive noise reduction unit for blocking ambient noise,
- wherein the earplug and the housing as viewed from one side is L-shaped comprising a stem portion of the L-shaped housing along a first axis and bar portion of the L-shaped housing along a second axis, wherein:
- the stem portion has a length of 25 mm or less;
- the bar portion has a length of 23 mm or less;
- and
- an inner angle between the first axis and the second axis of the L-shaped housing is 85 to 120 degrees.
Dependencies are inferred from the claim text.