Analog and digital audio alignment in the HD radio exciter engine (exgine)
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United States of America Patent
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Nov 19, 2019
Grant Date -
Aug 15, 2019
app pub date -
Aug 22, 2018
filing date -
Feb 9, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus comprises a digital input port configured to receive digital audio packets of main program service (MPS) audio; a modem operatively coupled to the digital port; an analog input port configured to receive an audio engineer society format (AES) audio signal that is a digitized version of the analog signal component of the frequency modulation (FM) hybrid radio signal; and an alignment unit configured to time-align the AES audio signal with the digital audio packets at the modem; wherein the modem is configured to generate the FM hybrid radio signal using the digital audio packets and the time-aligned AES audio signal.
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