Propellerhead Reason - 4.0 Instrukcja Operacji Pobierz pdf (Strona 19)

AUDIO BASICS

About Sample Rates and Resolutions

Sample rate and resolution are properties of digital audio, which determine the quality

of the sound. Generally, higher sample rate and resolution result in better audio quality

(but also larger audio files and higher demands on computer performance and audio

hardware).

This table shows some common sample rate/resolution combinations:

To cater for all different situations, Reason supports multiple sample rates and resolu-

tions. This applies to the following areas:

Playing back

Reason handles all internal audio processing in 32-bit floating point resolution. How-

ever, the resolution of the output audio is determined by the audio hardware. That is,

if you have a 24-bit audio card, Reason will create audio in 24-bit resolution, and if you

have a 16-bit audio card, audio will be in 16-bit resolution.

The playback sample rate can be specified in the Preferences-Audio dialog (ac-

cessed from the Reason menu or Edit menu depending on whether you are running

Mac OS X or not):

Note that the available options on this pop-up menu depend on which sample rates

are supported by the audio hardware. Most standard sound cards support 44.1 kHz

and various lower sample rates, in which case you should select 44.1 kHz for best au-

dio quality.

About using high resolution audio

Reason has the capability to play back samples with practically any resolution. This

means that if for instance 24-bit samples are loaded in a sampler or the Redrum, play-

back of the samples can be in 24-bit resolution as well. If you are using such samples

and want Reason to play them back in their original high resolution, proceed as fol-

lows:

1. Open the Preferences from the Edit menu or Reason menu, and select the

General page.

2. At the bottom of the page, make sure the option “Use High Resolution Sam-

ples” is checked.

If this is activated, and if your audio card supports it, Reason will play back high reso-

lution samples in their original resolution. If this option is not activated, Reason will

play back all samples in 16-bit resolution, regardless of their original resolution.

Exporting audio

Reason can export audio, i.e. mix down the song or a section of the song as an audio

file (see page 137 for details). When you do this, you will be asked to specify a reso-

lution (16 or 24 bit) and sample rate (11–96 kHz) for the file.

✪ If you plan to open the exported file in another application, you should

select a format that is supported by the application. If you’re uncertain,

16 bit/44.1 kHz is a safe bet.

Importing audio

When loading samples or ReCycle files into the samplers, the drum machine device

or the loop player, Reason supports files of a large number of sample rates and reso-

lutions. You can use files of different formats in the same device - one drum sound can

be an 8-bit sample, the next a 16-bit sample, etc.

Sample rate:

Resolution:

Comment:

22.05 kHz 8 bit Typically used in situations where small file size is

more important than audio quality, such as games,

some multimedia applications, sound files on the

Internet, etc.

44.1 kHz 16 bit This is the format used on standard audio CDs.

44.1 kHz –

96 kHz

24 bit These are formats used in professional studios

and high-end recording equipment.

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