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    TIME-ALIGNMENT MEASURMENT FOR HYBRID HD RADIO TECHNOLOGY
    81.
    发明申请
    TIME-ALIGNMENT MEASURMENT FOR HYBRID HD RADIO TECHNOLOGY 审中-公开

    公开(公告)号：US20190190691A1

    公开(公告)日：2019-06-20

    申请号：US16284586

    申请日：2019-02-25

    Applicant: Ibiquity Digital Corporation

    Inventor： Brian W. Kroeger ,  Paul J. Peyla

    IPC: H04L7/00 ,  H04L12/18 ,  H04H20/30 ,  H04H60/12 ,  H04H40/18 ,  H04H40/00 ,  H04H60/00

    Abstract: A method for processing audio signals in a radio transmitter, includes: receiving an analog audio sample stream and a digital audio sample stream; determining offsets in time between the analog audio stream and the digital audio stream using a normalized cross-correlation of audio envelopes of the analog audio sample stream and the digital audio sample stream; filtering the determined offsets in time to produce filtered offset values; determining an alignment slip adjustment value as a function of the filtered offset values; aligning the analog audio sample stream and the digital audio sample stream using the determined alignment slip adjustment value; and generating a hybrid radio signal for broadcast that includes time-aligned analog audio and digital audio.

    SIGNAL PROCESSING USING MULTIPLE SOURCES
    84.
    发明申请
    SIGNAL PROCESSING USING MULTIPLE SOURCES 审中-公开

    公开(公告)号：US20190013885A1

    公开(公告)日：2019-01-10

    申请号：US15643794

    申请日：2017-07-07

    Applicant: NXP B.V.

    Inventor： Naveen Jacob

    IPC: H04H40/18 ,  H04B7/08

    Abstract: Aspects of the disclosure are directed to providing signals utilizing two or more sources. As may be implemented in accordance with one or more embodiments, a method and/or apparatus involves processing respective signals carrying broadcast data provided by different receiver circuits that respectively receive the same broadcast data. The signals received from the respective receiver circuits are equalized, and corresponding sets of the broadcast data from each of the equalized signals are selectively combined to provide a combined signal carrying the broadcast data. This approach may be used, for example, to generate broadcast data utilizing source data from two or more receivers, such as may be received on different signal mediums (e.g., over-the-air digital radio and Wi-Fi digital radio), and therein providing enhanced reception.

    Audio system
    86.
    发明授权
    Audio system 有权

    公开(公告)号：US09923653B2

    公开(公告)日：2018-03-20

    申请号：US15387277

    申请日：2016-12-21

    Applicant: Alpine Electronics, Inc.

    Inventor： Tomohiko Ise

    IPC: H04L27/06 ,  H04H40/18 ,  H04H20/86 ,  H04R3/12

    CPC classification number: H04H40/18 ,  H04H20/62 ,  H04H20/86 ,  H04R3/12 ,  H04R2499/13

    Abstract: A digital tuner in a broadcasting receiving unit outputs audio data at a sample rate of Fs+dr (Hz), and an ASRC rate-converts audio data to audio data at a sample rate of Fs+ds (Hz) and transmits the resulting audio data to an audio processing unit. A DAC in the audio processing unit analog-converts the received audio data at an output rate of Fs+da (Hz) and outputs the resulting audio data to a speaker. The sample rate Fs+ds and the output rate Fs+da are synchronized with a SYNC transmitted from the broadcasting receiving unit to the audio processing unit on a 125 ms cycle. For the sample rate Fs+ds and the output rate Fs+da, a relationship of (da−ds)×0.125

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