MAS.632 Conversational Computer Systems - MIT OpenCourseWare

Applilions •nddiing of 1Stoed Voice 13
in Figure 4.8. With each edit operation performed by the user, one or more
entries are likely to be added to the buffer list. After a number of operations, the
resulting representation is complex (see Figure 4.9), but it is hidden completely
from the user. Depending on how sound is stored in disk files, the complexity
may be largely hidden from the editing program as well; some sound file systems
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Figure 4.8. Edit buffers showing insertion of a new sound into an existing
sound. The original sound at the top must be divided into two segments,
each with its own buffer node and a new node inserted in their
midst. The resulting buffer in the middle may then be written to a single
file at bottom.
Figure 4.9. After a number of edit operations, the resulting buffer may
become rather complicated.