Patents Assigned to LIZN APS
  • In-ear headphone device with active noise control
    Patent number: 12081935
    Abstract: An in-ear headphone device for insertion in an ear canal of a person. The in-ear headphone device comprises a noise microphone, a loudspeaker and a signal processor arranged to provide an active noise control signal on the basis of a recorded audio signal from said noise microphone, wherein said loudspeaker is arranged to reproduce said active noise control signal in said ear canal. Further, the device comprises a damped vent comprising one or more vent elements and one or more dampening elements, said damped vent being arranged to couple said ear canal to an external acoustic environment. The damped vent is characterized by an inward vent transfer function HVI from said external acoustic environment to said ear canal.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: September 3, 2024
    Assignee: LIZN ApS
    Inventor: Niels Farver
  • IN-EAR HEADPHONE DEVICE WITH ACTIVE NOISE CONTROL
    Publication number: 20230141100
    Abstract: An in-ear headphone device for insertion in an ear canal of a person. The in-ear headphone device comprises a noise microphone, a loudspeaker and a signal processor arranged to provide an active noise control signal on the basis of a recorded audio signal from said noise microphone, wherein said loudspeaker is arranged to reproduce said active noise control signal in said ear canal. Further, the device comprises a damped vent comprising one or more vent elements and one or more dampening elements, said damped vent being arranged to couple said ear canal to an external acoustic environment. The damped vent is characterized by an inward vent transfer function HVI from said external acoustic environment to said ear canal.
    Type: Application
    Filed: February 25, 2021
    Publication date: May 11, 2023
    Applicant: LIZN ApS
    Inventor: Niels Farver
  • Speech intelligibility enhancing system
    Patent number: 11265660
    Abstract: A speech intelligibility enhancing system for difficult acoustical conditions is disclosed, the speech intelligibility enhancing system comprising at least one ear plug (201) for insertion in an ear canal (218) of a person, the at least one ear plug being arranged with an ear canal facing portion (401) and an environment facing portion (402), and the at least one ear plug comprising an acoustically attenuating path (214; 214, 213) comprising a vent (214) coupling said environment facing portion (402) with said ear canal facing portion (401); and an electroacoustic path (202, 204, 209; 202, 203, 204, 208, 209, 210, 211, 212) comprising a microphone (202) at said environment facing portion (402), a variable gain (204) and a loudspeaker (209) at said ear canal facing portion (401); wherein said acoustically attenuating path (214; 214, 213) is arranged with a transfer function from said environment facing portion (402) to said ear canal facing portion (401) having a low pass characteristic having a low pass cut¬o
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: March 1, 2022
    Assignee: LIZN APS
    Inventor: Niels Farver
  • Combined charger and sleeve
    Patent number: D870666
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: December 24, 2019
    Assignee: LIZN APS
    Inventor: Torben Madsen