EAP-3101

The EAP-3101 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, dynamic processing (limiter, compressor, and expander) and loudness metering. A new lip sync option generates audio/video fingerprints to detect and measure lip sync errors in a broadcast facility.

It has one on-board socket for optional modules, which can offer Dolby decoding, Dolby encoding and stereo upmixing using Linear Acoustic upMAX™ technology. Two new modules provide Automatic Loudness Control (ALC), using the AEROMAX™ technology by Linear Acoustic, or Level Magic™ by Jünger Audio. Both solutions are capable of maintaining constant loudness across different audio programs (See Automatic Loudness Control (ALC)) .

The card will pass and delay automatically all 32 internal audio channels to preserve lip sync between the channels. Each channel can be delayed independently to correct any lip sync issues. All audio channels can be mixed and shuffled to provide 16 channels for embedding in the video output.

When genlocked to an external reference or to the frame reference using the internal URS signal, the EAP-3101 can handle video hot switches at the input without losing sync at the output. In absence of the video input, the card can freeze the output to the last good frame, field or black.



The card has a frame buffer (not a frame sync) which allows an increase in the video delay of up to 15 frames to compensate for the long audio processing delay required by some modules. For applications which require a small processing delay, the frame buffer can be bypassed to reduce the delay to a few microseconds.

The EAP-3101 has 3 GPIO that can be used as input or output to embed or extract GPI events to/from the Time Code user bits in transport applications, or they can be used simultaneously to trigger the card's user presets.

Dolby Metadata insertion in the VANC is possible from multiple sources, such as a Dolby E decoder module, an embedded VANC stream, an external RS-422 link, or from the integrated Metadata generator. All parameters in the Metadata stream can be probed and monitored. Dolby Metadata can be used to steer the behaviour of the audio downmix and upmix modules.

The EAP-3101-3SRP-R rear module has a bypass relay that can be used to bypass the main input to the output if the card fails, loses power or if the card is removed.

There are many benefits to the EAP-3101's high level of feature integration. A lower purchase cost per channel is obviously highly desirable but there are many other dimensions to cost savings that are readily achievable. These include reduced space and cooling costs, less cabling, and a reduced spares inventory. By simplifying video and audio synchronization, and reducing the number of vendors, the system integration is also simplified significantly.