VST OneTrack Especificações descarregar pdf (Página 455)

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Synchronization and audio playback

Synchronizing digital audio material with the “real world” raises many issues

which are not immediately apparent when using MIDI only systems. This is a big

subject, and we will only be able to touch upon it here.

● Please note that Cubase VST makes use of special Synchronization function-

ality in the respective ASIO drivers. Exactly what is possible depends on

which audio card you are using.

Avoid MIDI Clock!

With Cubase VST, you should sync the program to time code (SMPTE or MIDI

Time Code), not MIDI Clock. MIDI Clock is a tempo dependent synchronization

with low resolution, not really suitable for professional audio applications.

If you can – Use Cubase VST as a Master

To avoid drift between audio and MIDI we recommend you to not synchronize Cu-

base VST externally at all when using audio, if possible. However, you might very

well use Cubase VST as a “master” for other systems. Using MIDI Time Code or

MIDI Clock generated by Cubase VST (for transmission to other devices) will en-

sure sync with the audio.

Audio and External Synchronization

How Timing is handled in a non-synced system

Let’s ﬁrst look at the situation where Cubase VST is not synchronized to any exter-

nal source.

Any digital playback system has an internal clock that ultimately affects the play-

back speed and stability, and PC audio hardware is no exception. This clock is ex-

tremely stable.

Normally, you will have the MIDI Sync Reference setting in the Audio System di-

alog set to “Audio Clock”. This means that when Cubase VST plays back, the MIDI

part of the program is internally synchronized to the digital audio to ensure syn-

chronization between digital audio and MIDI.

Synchronizing Cubase VST’s playback

Let’s assume now that we use external synchronization, with Cubase VST, for ex-

ample, we might synchronize playback to a tape recorder, using time code.

Time code coming from an analog tape recorder will always vary slightly in speed.

Different time code generators and different tape recorders will also supply time

code with slight differences in speed. In addition, the shuttling of tape mechanisms

due to overdubs and re-recordings can cause the physical tape to wear and stretch,

which affects the speed of the time code.

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VST OneTrack Especificações Página 455