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SMPTE/MIDI time code synchronization
Synchronizing your gear
SMPTE/MTC sync and full chase lock
When using SMPTE/MTC Sync with full chase lock, the first time you play any audio the pitch may
fluctuate wildly for up to 30 seconds. Also, you may occasionally note the pitch of the audio sounding
consistently high or low pitch.
A simple analogy makes this behavior easy to understand: Synchronizing audio to SMPTE/MTC is a
lot like trying to get even and stay neck-and-neck with another car on the freeway. If the car is ahead
of you, you need to drive faster to catch up to it. If it's behind you, you have to slow until the car
catches up to you. Once the two cars are neck-and-neck, you can simply keep going at the same
speed, unless the other car changes its speed. If the other car speeds or slows, you must speed or
slow too.
The first time you play audio under SMPTE/MTC Sync, the audio clock has to get even with the
external clock. This could mean racing ahead, which raises the pitch of the audio, or stepping on the
brakes, which lowers the pitch of the audio. These fluctuations continue until SONAR matches its
playback speed to the external clock, which usually takes no more than 30 seconds. The stable
playback speed, by the way, may be slightly faster or slower than the normal audio playback speed,
resulting in a slight change in the pitch of the audio. Here’s the best way to address this problem:
• Start each new SONAR session by playing some audio under SMPTE/MTC Sync.
• Let the audio play for 30 seconds or until all audio pitch fluctuations stop.
Once this procedure is complete, SONAR knows the difference in rates between the external time
code and the audio clock on your sound card. For the rest of the session, SONAR will start playback
closely in sync, without any drastic pitch changes.
If the external timing source were 100 percent stable, the audio would stay in sync with the external
clock. Unfortunately, no timing source is perfect. Therefore, every once in a while after playback has
started, SONAR may need to vary the playback speed by a tiny amount to stay even with the time
code. If the time code signal is unstable (as might be the case from an analog source), these
variations can cause noticeable changes in audio pitch, which can in turn cause audible audio
distortion.
Содержание sonar x3
Страница 1: ...SONAR X3 Reference Guide...
Страница 4: ...4 Getting started...
Страница 112: ...112 Tutorial 1 Creating playing and saving projects Saving project files...
Страница 124: ...124 Tutorial 3 Recording vocals and musical instruments...
Страница 132: ...132 Tutorial 4 Playing and recording software instruments...
Страница 142: ...142 Tutorial 5 Working with music notation...
Страница 150: ...150 Tutorial 6 Editing your music...
Страница 160: ...160 Tutorial 7 Mixing and adding effects...
Страница 170: ...170 Tutorial 8 Working with video Exporting your video...
Страница 570: ...570 Control Bar overview...
Страница 696: ...696 AudioSnap Producer and Studio only Algorithms and rendering...
Страница 720: ...720 Working with loops and Groove Clips Importing Project5 patterns...
Страница 820: ...820 Drum maps and the Drum Grid pane The Drum Grid pane...
Страница 848: ...848 Editing audio Audio effects audio plug ins...
Страница 878: ...878 Software instruments Stand alone synths...
Страница 1042: ...1042 ProChannel Producer and Studio only...
Страница 1088: ...1088 Sharing your songs on SoundCloud Troubleshooting...
Страница 1140: ...1140 Automation Recording automation data from an external controller...
Страница 1178: ...1178 Multi touch...
Страница 1228: ...1228 Notation and lyrics Working with lyrics...
Страница 1282: ...1282 Synchronizing your gear MIDI Machine Control MMC...
Страница 1358: ...1358 External devices Working with StudioWare...
Страница 1362: ...1362 Using CAL Sample CAL files...
Страница 1386: ...1386 Troubleshooting Known issues...
Страница 1394: ...1394 Hardware setup Set up to record digital audio...
Страница 1400: ...1400 MIDI files...
Страница 1422: ...1422 Initialization files Initialization file format...
Страница 1463: ...1463 Misc enhancements New features in SONAR X3...
Страница 1470: ...1470 Comparison...
Страница 1518: ...1518 Included plug ins Instruments...
Страница 1532: ...1532 Cyclone Using Cyclone...
Страница 1694: ...1694 Beginner s guide to Cakewalk software Audio hardware sound cards and drivers...
Страница 1854: ...1854 Preferences dialog Customization Nudge Figure 518 The Nudge section...
Страница 1856: ...1856 Preferences dialog Customization Snap to Grid Figure 519 The Snap to Grid section...
Страница 1920: ...1920 Snap Scale Settings dialog...
Страница 2042: ...2042 View reference Surround panner...