User guide

Chapter 7 Working With Projects 147
To match a file’s sample rate with the project sample rate, you can:
m Use the Audio Bin’s Copy/Convert File command, then replace the file in the project.
Logic Express performs a real time, native sample rate conversion. Any sample rate
available in Logic Express (via Audio > Sample Rate) can be used for the conversion—
even if your audio hardware does not support the selected sample rate.
The native software sample rate conversion facility matches the sample rate of any
audio hardware, thereby allowing the playback of projects on virtually any audio
system—even if the hardware is—in sample rate terms—not compatible. Nothing is
lost in the process. Any internal processing and bouncing is always performed at the
original sample rate, and at the highest quality, even in cases where the hardware does
not support a particular sample rate. This facility allows you to work on projects
originally created on high-end audio systems, with lower-end setups.
Example: A project was created with audio hardware set to operate at 96 kHz. Moving
this project to a notebook computer, or setup that does not support the original
project’s sample rate, will commonly result in the wrong playback speed. The native
real time sample rate conversion facility will counteract this effect, allowing correct
playback of the project on the laptop, at any sample rate.
Note: High sample rates not only eat drive space, but also result in more CPU load.
Setting the Project Tempo
You can set the basic project tempo in the Transport, the Tempo track, or the Tempo
List. Logic Express displays tempo as quarter notes per minute, or beats per minute
(bpm). It ranges from 5 to 9999 bpm, and is adjustable to four decimal places after the
whole value.
To set the project tempo, do one of the following:
m Click-hold the Transport tempo value and drag up or down, or double-click the tempo
field, then type a new value.
m Click-hold the tempo value in the Tempo List and drag up or down, or double-click the
tempo field, then type a new value.