| 摘要 |
<p>The invention relates to a disc for use in an apparatus for signal processing, which apparatus comprises a digital audio source (3, 7) and a record player (1, 6) with a turntable and an arm (1, 7) carrying a pick-up element (1, 8) which is arranged to play a conventional record. The disc during its use is placed on the turntable and is provided with a groove which can be followed by the pick-up element, and which comprises a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source.</p> |
