Propellerhead Reason - 2.0 Betriebshandbuch PDF herunterladen (Seite 253)

About Audio on Computers

251

Reason’s built in sequencer is not affected by latency!

When Reason’s sequencer is playing back a song, the timing between notes is

perfect! Once playback of a Reason pattern or song is up and running, latency

isn’t a consideration at all. The computer clocks the audio between the steps

and does this with perfect quartz accuracy! The timing is immaculate!

ReWire and Latency

When you run Reason as a ReWire slave, it is the other program, the Rewire

master that is responsible for actually creating the audio and playing it back via

the audio card. This means that it is the master program’s latency you will get as

a final result.

! When Reason runs as a ReWire slave, what audio card you have,

what driver you use, and settings you have made in the Preferences

dialog are of no importance at all! All audio card settings are then

instead done in the ReWire master application!

For information on ReWire, see “Using Reason as a ReWire Slave”.

Reducing latency

✪ Please note that internal audio under Mac OS 9 has a fixed latency

of 11ms which is very stable under all normal circumstances. The

tips below are for Windows users and for Mac OS 9 users with addi-

tional audio cards.

There are a few general methods for making sure latency is as low as possible:

Use a card with an ASIO driver.

While this in itself is no guarantee for low latency, ASIO drivers generally

perform better than MME or DirectX.

Select an audio card that supports low latency (small buffers) and

which is known for well written ASIO drivers.

Remove background tasks on your computer.

This might be any background utility you have installed as well as network-

ing, background internet activities etc.

Optimize your songs.

You might run into situations where you have to raise the Output Latency

setting to be able to play back a very demanding song on your computer.

Another option would be to actually optimize the song. See “Optimizing Per-

formance” for details.

Get a faster computer.

This is related to the point above and only required if you find that you need

to increase Output Latency because your computer can’t really cope with

the songs you try to play.

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Propellerhead Reason - 2.0 Betriebshandbuch Seite 253