Manualshelf

X

ManualsBrandsMagix Xara ManualsApplicationsSamplitude Pro
341342343344345346347348349350
Table Of Contents
350 SYNCHRONIZATION
Chase lock sync - adapt speed by resampling
Samplitude supports real chase lock synchronization, i. e. audio playback can be
controlled by an incoming timecode signal. In this case not only the starting point of audio
playback is controlled externally, but sync also controls playback speed if "Chase Lock" is
activated. Samplitude is therefore capable of following analog tape devices or VCRs that
always feature some slip over longer periods.
If fluctuations in speed occur, Samplitude can make adjustments in slave mode that ensure
exact temporal synchronization. This function is called "chase lock". Use chase lock in
case a device involved in the synchronization cannot be clocked centrally via Blackburst,
Wordclock, or the digital input and Samplitude is the "slave". This is the case if the
timecode is located on a track featuring a multitrack machine.
Active: Activate chase lock synchronization by clicking this check box.
Sync Velocity: By entering the Sync Velocity you can influence the speed of the tempo
adjustment. The greater the sync velocity value, the faster Samplitude will follow master
device tempo changes; however, this also means that the pitch fluctuation in the audio
material is greater. The preset value for the sync velocity is 100; experiment with values
larger than 100 in case the synchronization does not run exactly.
Note: Please note that Samplitude will apply resampling to the recording in real time
according to the timecode fluctuations in case chase lock is active. This causes increased
CPU load and may result in unwanted changes to the audio material, if this is played later
with other timecode references.
If the systems are coupled via a central digital audio clock, then chase lock should not be
activated.
When using the hardware pitching feature, chase lock synchronization uses direct access
to the sample rate of the sound card in 1 Hz steps. This achieves particularly precise
synchronization without additional CPU load. However, this feature has to be supported
specially by the sound card.
Use sample-accurate position: If this option is active, Samplitude uses the time position
of the sound card as the clock reference (timer) and not its own internal timer. This ensures
sample-exact synchronization between the recorded audio material and the sync signal.