Patents by Inventor Andreas von Zitzewitz

Andreas von Zitzewitz 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).

  • Patent number: 5199065
    Abstract: A method for automatic speech direction reversal includes supplying a reception signal with variable damping to a loudspeaker, outputting a microphone signal with variable damping from a microphone as a transmission signal; continuously classifying each of the reception signal and the microphone signal as a speech signal or noise; setting the damping of one of the signals classified as the speech signal to a first damping value, setting the damping of the other of the signals to a second damping value being higher than the first damping value, and maintaining the set damping until the one signal is classified as noise. The preceding damping values are maintained if both of the signals are classified as a speech signal. Both damping vlaues are set to a third damping value being located between the first and second damping values if both of the signals are classified as noise.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: March 30, 1993
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andreas von Zitzewitz, Siegmund Redl