First On-Air ATSC Trial of Dolby AC-4 Utilizes Harmonic

San Fran's KQED(TV) used Electra X2 for real-time video and audio encodingKQED(TV) used Electra X2 for real-time video and audio encoding
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SAN JOSE, Calif. �A recent live, on-air ATSC demonstration of Dolby AC-4 was performed by San Francisco PBS station KQED(TV). This was an important milestone for the standard.

The station used Harmonic�s Electra X2 advanced media processor for real-time video and AC-4 audio encoding to help demonstrate how Dolby AC-4 can improve bandwidth efficiency for broadcasters to enable the delivery of enhanced audio content.

With Electra X2 adding native Dolby AC-4 encoding, KQED was able to deliver 5.1 surround sound and HD video at a low bit rate of 2Mbps.

�I was impressed by the quality of the Dolby AC-4 broadcast at such a low bandwidth and see technology like this as an essential element to the future of KQED-TV,� said Lee Young, director of engineering and facilities for KQED.

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