Yamaha A3000 Owner's Manual - Page 231

SETUP Function Knob 5 • For DIGITAL and OPTICAL inputs, the A3000 supports the following three clock frequencies only: 48kHz, 44.1kHz, and 32kHz. The A3000 can not accept input frequencies other than these. Note also that the A3000 does not filter out return noise when reducing the frequency to ext/2, ext/4, or ext/8. Also note that if you reduce the frequency, the quality that you hear when monitoring the signal may not match the recording quality. • Note that you can not use the DIGITAL OUT connector (on the AIEB1 expansion board) to monitor the input signal. Note also that A3000's DIGITAL OUT frequency is fixed at 44.1kHz. Pretrig = 0ms,...,500ms Use this feature to add a "pretrigger" period to the recording, so that actual recording starts at a specified interval ahead of the start trigger. While in standby, the A3000 retains memory of recent input. When the A3000 receives the start trigger, it moves the start point back so as to include the pretrigger interval into the recording. As an example, assume you want to record a sudden explosive sound from a tape cassette, and that you are using a manual trigger to do this (you push the >START knob when you hear the sound start). Since the sound comes up so suddenly, you will always push the knob too late. If you set the pretrigger to a 500ms, however, then you can wait 1/2 second after the sound has started before pushing the >START knob. The pretrigger is especially helpful when you are using a signal-level trigger (when StartBy = SrcIn; 234), since it allows you to capture the attack portion of the target sound. If you set the level to 30 and the pretrigger to 0ms, you will miss any attack qualities as the level builds from 1 to 29. If you set the pretrigger to 300ms, however, you will be able to capture 0.3 second of attack. Original Sound Level Sample produced when pretrigger = 0ms. Level Start trigger is here Time Time Sample produced when pretrigger = 300ms. Level 300ms (0.3sec.) Time Chapter 6 Chapter 6 RECORDING Mode 229