The 7721AE8-AC3E-HD Audio Embedder & Dolby Digital (AC-3) Encoder can insert up to 16 audio channels as 4 embedded audio groups into a 1.5Gb/s HD or a 270Mb/s SD video signal as specified by SMPTE ST 299-1 or ST 272 respectively.

This device provides:

• HD/SD-SDI video proc functions
• 16 channel audio demux & re-mux
• 16 channel audio proc
• Dolby Digital (AC-3) encode
• Can automatically compensate for encoding delay
• Optional Professional Upmix with +UMX

The on-board audio processor provides control to route, shuffle, mix and proc up to 16 selected channels. All channels can be additionally delayed up to 1.2 seconds. There are two on-board audio mixers. One mixer is dedicated for the AES and embedded audio processing, and the other mixer is dedicated to the input Dolby Digital (AC-3) encoder.

The on-board Dolby Digital (AC-3) Encoder can process up to six audio channels. The encoder will transform the 6 discrete channels into 2 channels containing Dolby Digital (AC-3) and the associated Dolby metadata. The encoder supports encoded bit ranges from 56 to 640kb/s and channel configurations from mono to 5.1-channel surround sound. Dolby Metadata can be ingested from an external source, extracted from the VANC, or authored directly on-board the module.

The final processed audio can be re-embedded as 4 embedded audio groups into the HD/SD-SDI output signal and additionally can be routed discretely to the AES outputs.

VistaLINK® enables control and configuration capabilities via Simple Network Management Protocol (SNMP). This offers the flexibility to manage the module status monitoring and configuration from SNMP - enabled control systems such as Evertz VistaLINK® PRO locally or remotely.

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