Narrowing audio filter transition band

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United States of America Patent

PATENT NO 9906198
SERIAL NO

14663783

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Abstract

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An apparatus including a first audio filter; a first transducer connected to the first audio filter; and a first sound attenuator located relative to the first transducer to attenuate sound from the first transducer. The first audio filter includes a first transition frequency band. The first sound attenuator is configured to attenuate sound generated by the first transducer from audio signals through the first audio filter in a target frequency band, where a majority of the target frequency band is in the first transition frequency band.

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Patent Owner(s)

  • NOKIA TECHNOLOGIES OY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lehtiniemi, Arto Juhani Lempaala, FI 161 1190
Roimela, Kimmo Tapio Tampere, FI 16 252
Shetty, Ranjeeth Ravindra Tampere, FI 3 14
Vilermo, Miikka Tapani Siuro, FI 109 362

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