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    EAP-3901: 3G/HD/SD Embedded Audio and Metadata Processor Datasheet (GVB-1-0365E-EN-DS) File size: 1.1 MB, posted Nov 30 2018
    The EAP-3901 from Grass Valley, a Belden Brand, is an advanced embedded audio processor which can simultaneously process up to 32 channels of audio (16 channels of embedded audio from the video plus others generated internally). Functions include down-mixing, proc amp, channel shuffling and mixing. Options include automatic loudness control (ALC), dynamic processing (limiter, compressor and expander) and loudness measurement. The EAP-3901 generates audio/video fingerprints (via an iControl option) to detect and measure lip sync errors in a broadcast facility.