Patents by Inventor David Paul Theis

David Paul Theis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Loudspeaker Device
    Publication number: 20110164754
    Abstract: There is provided a loudspeaker device comprising at least one loudspeaker (L1, L2) for the playback of audio signals and at least one microphone (M1, M2) for recording ambient noises. The loudspeaker unit further has an audio input (D1) for receiving audio signals to be played back and a signal processing unit (DSP) for controlling the playback of the audio signals to be played back by the at least one loudspeaker (L1, L2) in dependence on the ambient noise recorded by the at least one microphone (M1, M2).
    Type: Application
    Filed: November 27, 2008
    Publication date: July 7, 2011
    Inventors: Achim Gleissner, David Paul Theis, Suzanne Fiona Sielski Waters