Earpiece acoustics
AssigneeNokia Mobile Phones Ltd.
InventorsDavid Williams, John Mercer
Life of this patent
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Abstract
A radiotelephone is provided which comprises a housing 1 having an earpiece port 4, a loudspeaker 6 and a resonator. The resonator comprises and earpiece path form the loudspeaker to the earpiece port4. Further, the resonator also comprises an internal cavity 7, which may be ring, and a path 8 from the loudspeaker 6 to the internal cavity 7, to provide a specified resonance performance.
Claims29
A resonator for a radiotelephone having a housing with an earpiece port and a loudspeaker, the resonator comprising:
- a housing, a first linear channel for channeling sound between the loudspeaker and the earpiece port, an internal cavity, and a second channel for channeling sound between the loudspeaker and the internal cavity and providing a specified resonance performance, and further comprising a compensation filter for compensating for the specified resonance performance, wherein the compensation filter comprises a digital signal processor.
A resonator having a housing with an earpiece port and a loudspeaker, the resonator comprising:
- a housing, a first channel for channeling sound between the loudspeaker and the earpiece port, an internal cavity, and a second channel for channeling sound between the loudspeaker and the internal cavity and providing a specified resonance performance, wherein the internal cavity is exposed through an open face in the resonator housing, and further comprising a compensation filter for compensating for the specified resonance performance, wherein the compensation filter comprises a digital signal processor.
A resonator for a radiotelephone, the radiotelephone having a housing with an earpiece port and a loudspeaker, the resonator comprising:
- a housing, a first channel for channeling sound between the loudspeaker and the earpiece port, and an internal cavity characterized wherein a second channel for channeling sound between the loudspeaker and the internal cavity is provided to give a specific resonance performance which causes a low frequency loss, and wherein low frequency boosting is provided to compensate for the low frequency loss.
Dependencies are inferred from the claim text.