Mobile telecommunications device
AssigneeNokia Corporation
InventorsPer Pedersen, Alireza Asadi Sohi, Jens Madsen, Kenn Berend Pedersen, Per Højlev
Life of this patent
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Abstract
A mobile telecommunications device is disclosed and comprises a casing (2), an earpiece (6), and a cover (33) associated with the earpiece (6) to define a resonant cavity (34) between the earpiece (6) and the casing (2), wherein the cover (33) has an opening therein for the transmission of sound from the earpiece (6) via the cavity (34) into an acoustic path formed between the casing (2) and the cover (33).
Claims10
A mobile telecommunications device comprising a casing, an earpiece, and a cover associated with the earpiece to define a resonant cavity between the earpiece and the casing, wherein the cover has an opening therein for the transmission of sound from the earpiece via the cavity into an acoustic path formed between the casing and the cover, wherein the casing is interchangeable with at least one other casing, each casing having a plurality of apertures therein for the external transmission of sound from the device, at least one of a number and arrangement of apertures in each casing being different and the resonant cavity and the acoustic path being configured so that an acoustic response of the earpiece remains substantially the same irrespective of which casing is attached to the device.
A method of manufacturing a mobile telecommunications device comprising a casing, an earpiece, and a cover associated with the earpiece to define a resonant cavity between the earpiece and the casing, wherein the casing is interchangeable with at least one other each casing having a plurality of apertures herein for the external transmission of sound from the device, at least one of a number and arrangement of apertures in each casing being different and the resonant cavity and the acoustics path being configured so that an acoustic response of the earpiece remains substantially the same irrespective of which casing is attached to the device, and wherein the method includes the step of tuning the cover to the frequency of the earpiece such that the configuration of each casing has substantially no effect on the acoustic response of the earpiece.
Dependencies are inferred from the claim text.