Detection and synchronization of audio transmissions using complex audio signals

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United States of America Patent

PATENT NO 11558647
SERIAL NO

17493315

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Abstract

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Methods and systems for improved detection of audio transmissions are provided. In one embodiment, a method is provided that includes receiving an audio signal containing an audio transmission. The audio transmission may contain a predetermined portion that was initially generated based on an expected sequence of complex-valued signals. A real portion of the expected sequence of complex-valued signals may be compared to the received audio signal to identify a first portion of the received audio signal. A complex portion of the expected sequence may be compared to portions of the received audio signal near the first portion of the received audio signal to identify a second portion of the received audio signal. An arrival time of the audio transmission may be determined based on the second portion of the received audio signal.

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Patent Owner(s)

Patent OwnerAddress
LISNR INC1203 MAIN STREET 2ND FLOOR CINCINNATI OH 45202

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Farrar, Rebekah Columbus, US 14 29
Knauer, William Bellevue, US 32 276
Mendel, Oz Piedmont, US 22 32

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