Detection and synchronization of audio transmissions using complex audio signals
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United States of America Patent
Stats
-
Jan 17, 2023
Grant Date -
N/A
app pub date -
Oct 4, 2021
filing date -
May 20, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
First Claim
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Family
International Classification(s)
- 2021 Application Filing Year
- H04N Class
- 16793 Applications Filed
- 10991 Patents Issued To-Date
- 65.45 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H04N Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
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