Sony 7 manual Looping techniques, Match endpoint amplitudes, Match endpoint waveform slope

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Looping techniques

Depending upon the source material, creating a natural-sounding loop can be a difficult task. Many factors beyond your control may produce distracting pops and glitches, thereby calling unwanted attention to the loop. Although looping skill is largely the product of practice and experimentation, there are some guidelines to consider.

Match endpoint amplitudes

One of the easiest ways to minimize the occurrence of glitches when creating loops is to select loop endpoints that have an amplitude of zero. These points are known as zero-crossings. For more information, see Finding zero-crossingson page 225.

Match endpoint waveform slope

Another technique for reducing loop glitches is to avoid matching loop endpoints where the waveform slope does not match. If the waveform slope changes drastically, a pop plays when the sample is looped.

Non-matching slope Matching slope

Note: The data windows pictured above display the Loop Tuner in the bottom half of the window. For more information on the Loop Tuner, please see page 223.

Match endpoint sound levels

The overall amplitude (or loudness) approaching the loop’s endpoints should be as similar as possible to prevent distracting glitches. Unfortunately, it is frequently difficult to avoid this problem, particularly with rapidly decaying source material. For more information, see Viewing loop amplitude on page 225.

Non-matching amplitude Matching amplitude

LOOPING CHP. 15