Sound on Vision

摘要

Like many audio enthusiasts I often listen to music on the radio and on TV. I enjoy events like the Proms from the BBC, and for this a good FM tuner has been a vital part of my audio system. However a couple of years ago I bought a digital terrestrial television receiver (or Freeview set-top box) for use with the TV set and AV system in the living room. Having enjoyed many televised Proms on BBC Four during 2004, it then occurred to me that the 2005 season would present an interesting opportunity for comparisons. The sound quality on BBC Four via DTTV seemed quite good to me, and lacked the background noise level of BBC Radio 3 FM. This set me wondering: what are the relevant levels of audio performance of these broadcast 'routes' and would we be better off listening to such music on BBC Four via DTTV (or R3 DTTV) rather than R3 on FM or DAB?