System information
I
In-Place Plug-In
An in-place plug-in processes audio data so that the output length always matches the input length. A non-
in-place plug-in's output length need not match a given input length at any time: for example, Time Stretch,
Gapper/Snipper, Pitch-Shift (without preserving duration), and some Vibrato settings can create an output
that is longer or shorter than the input.
Plug-ins that generate tails when there is no more input but otherwise operate in-place (such as reverb and
delay) are considered in-place plug-ins.
Insertion Point
The insertion point (also referred to as the cursor position) is analogous to the cursor in a word processor. It
is where pasted data will be placed or other data may be inserted depending on the operation.
Inverse Telecine (IVTC)
Telecine is the process of converting 24 fps (cinema) source to 30 fps video (television) by adding pulldown
fields. Inverse telecine, then, is the process of converting 30 fps (television) video to 24 fps (cinema) by
removing pulldown. For more information, see "Telecine" on page 647 and "Pulldown" on page 644.
Invert Data
Inverting sound data reverses the polarity of a waveform around its baseline. Inverting a waveform does
not change the sound of a file; however, when you mix different sound files, phase cancellation can occur,
producing a "hollow" sound. Inverting one of the files can prevent phase cancellation.
In the following example, the red line represents the baseline, and the lower waveform is the inverted image
of the upper waveform.
ISRC Code
Industry Standard Recording Codes (ISRC) were designed to identify CD tracks. The ISRC code is a 12-
character alphanumeric sequence in the following format:
Field A B C D E
Sample ISRC SE T38 86 302 12
640CHAPTER 34