Talk:Sliding Stretch

Peter 12July12: The following is taken from Clayton Otey's original draft documentation on the Wiki.

Options

• Rate Slide

The type of slide which interpolates between the initial and final rate scaling.

• Pitch Slide

The type of slide which interpolates between the initial and final pitch shift.

• Slide Types

• Linear Rate

Interpolate linearly between the initial and final rates (or pitch percentages).

• Linear Stretch

Interpolate linearly the inverse rates, equivalent to the stretch factors (or the inverse pitch percentages).

• Geometric

Interpolate geometrically (logarithmic). This is useful for pitch slides for producing portamento slides, which is linear in half steps.

• Slide References

The interpolation can be with reference to the input or the output audio.

The resulting output length for reference=input can be considerably longer than with reference=output, when very low rates are used.

To simulate a "slowing record", try type=linear rate; reference=output.

• Link Initial/Final

Fixes the initial and final rates, for a uniform change. This is for convenience in the UI, and doesn't affect the algorithm.

• Link Rate/Pitch (Resample)

This forces all changes to the pitch to affect the rate and vice versa, so that the affect is performed by resampling.

The result in this case is produced faster, and sounds more "unprocessed" than for arbitrary settings.

• Extreme Rates

Toggles more extreme settings for the rate slides.

• Clamp Length

Setting this will force any subsequent changes to preserve the output length.

This is useful if you need to fit the output in a fixed output length, but don't know how you want to slide.