Digital Sound & Music: Concepts, Applications, & Science, Chapter 1, last updated 6/25/2013
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1.5.3 Software for Digital Audio and MIDI Processing
1.5.3.1 The Basics
Although the concepts in this book are general and basic, they are often illustrated in the context
of specific application programs. The following sections include descriptions of the various
programs that our examples and demonstrations use. The software shown can be used through
two types of user interfaces: sample editors and multitrack editors.
A sample editor, as the name implies, allows you to edit down to the level of individual
samples, as shown in Figure 1.48. Sample editors are based on the concept of destructive editing
where you are making changes directly to a single audio file for example, normalizing an audio
file, converting the sampling rate or bit depth, adding meta-data such as loop markers or root
pitches, or performing any process that needs to directly and permanently alter the actual sample
data in the audio file. Many sample editors also have batch processing capability, which allows
you to perform a series of operations on several audio files at one time. For example, you could
create a batch process in a sample editor that converts the sampling rate to 44.1 kHz, normalizes
the amplitude values, and saves a copy of the file in AIFF format, applying these processes to an
entire folder of 50 audio files. These kinds of operations would be impractical or impossible to
accomplish with a multitrack editor.
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