Patents by Inventor Giuseppe DI CARLANTONIO

Giuseppe DI CARLANTONIO 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).

  • Sealed pipe-loaded loudspeaker for improving low frequency response in portable devices
    Patent number: 10536769
    Abstract: Embodiments are directed to a sealed pipe-loaded loudspeaker for augmenting low frequency response in a portable electronic device. A loudspeaker transducer is configured to radiate sound directly out of a forward radiation area and incidentally out of a rearward radiation area, and a sealed transmission line forming a closed pipe acoustically coupled to the transducer through which the rearward radiation propagates to produce standing waves corresponding to the dimensions of the closed pipe, wherein resonances apply a loading to a diaphragm element of the transducer to lower its resonance frequency. An acoustical wave front radiates away from the diaphragm element for the direct sound and is emitted outside of the device, and the rearward radiation is not emitted from the device.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: January 14, 2020
    Assignee: Dolby International AB
    Inventors: Kelvin Francis Griffiths, Giuseppe Di Carlantonio
  • SEALED PIPE-LOADED LOUDSPEAKER FOR IMPROVING LOW FREQUENCY RESPONSE IN PORTABLE DEVICES
    Publication number: 20170318383
    Abstract: Embodiments are directed to a sealed pipe-loaded loudspeaker for augmenting low frequency response in a portable electronic device. A loudspeaker transducer is configured to radiate sound directly out of a forward radiation area and incidentally out of a rearward radiation area, and a sealed transmission line forming a closed pipe acoustically coupled to the transducer through which the rearward radiation propagates to produce standing waves corresponding to the dimensions of the closed pipe, wherein resonances apply a loading to a diaphragm element of the transducer to lower its resonance frequency. An acoustical wave front radiates away from the diaphragm element for the direct sound and is emitted outside of the device, and the rearward radiation is not emitted from the device.
    Type: Application
    Filed: May 2, 2017
    Publication date: November 2, 2017
    Applicant: DOLBY INTERNATIONAL AB
    Inventors: Kelvin Francis GRIFFITHS, Giuseppe DI CARLANTONIO