Doppler Labs, Inc.

Sonos, Inc.

Dopler Labs, Inc.

Jonathan Oswaks

Dan Wiggins

Noah Kraft

Nils Jacob Palmborg

Richard Fritz Lanman

Edward D Mitchell

Philippe Vossel

Tristan Taylor

Wulin Xia

Wei-Hean Liew

Qiang Wu

Teik Siang Lee

A manufacturing process for a grille element of a media playback system is provided. In one embodiment a sheet of plastic is thermoformed into a desired shape. Holes may have been drilled into the sheet of plastic prior to being thermoformed. Once thermoformed into the desired shape, a coating is applied and cured via a subsequent heat treatment process that anneals the material to remove additional stresses in the material from thermoforming. Once formed and heat treated, the formed component can be bonded to profile substrates to help maintain the formed desired shape.

Manufacture of a grille element for a media playback device

A passive acoustical filter includes a first opening to receive ambient sound, a second opening to output filtered sound, and a first low pass filter element coupled between the first opening and the second opening. The first low pass filter element includes a first expansion chamber filled with a material in which a speed of sound is lower than a speed of sound in air.

Passive acoustical filters with filled expansion chamber

There is disclosed a passive acoustical filter including two or more filter elements coupled between an ambient and a listener's ear, each of the filter elements selected from the group consisting of a low pass filter element, a high pass filter element, a band reject filter element, and a band pass filter element.

Passive audio ear filters with multiple filter elements

There is disclosed a passive acoustical filter including a first filter element coupled between an ambient and an ear of a listener, at least a portion of the first filter element filled with a material in which a speed of sound is lower than a speed of sound in air.

Passive acoustical filters incorporating inserts that reduce the speed of sound

Wristband with communication device enclosed therein

Growing community of inventors

Thousand Oaks, CA, United States of America

Jonathan Oswaks