ShiftInput Class Reference
[Processing, Basic Processing]

Apply sliding window with certain hop size and window size. More...

#include <ShiftInput.h>

Inherits Marsyas::MarSystem.

Private Attributes
MarControlPtr	ctrl_clean_
	Internal pointer to the clean MarControl.
MarControlPtr	ctrl_highCleanLimit_
	Internal pointer to the highCleanLimit MarControl.
MarControlPtr	ctrl_lowCleanLimit_
	Internal pointer to the lowCleanLimit MarControl.
MarControlPtr	ctrl_reset_
	Internal pointer to the reset MarControl.
MarControlPtr	ctrl_winSize_
	Internal pointer to the winSize MarControl.
mrs_natural	hopSize_
	Internal cache for the hop size value.
realvec	outSavedData_
	Internal sample buffer.
mrs_natural	winSize_
	Internal cache for the window size value.

---

Detailed Description

Apply sliding window with certain hop size and window size.

The ShiftInput MarSystem is useful for generating slices from an input source in a sliding window fashion with certain window size and hop size.

The hop size between the overlapping windows is defined by the number of input samples of the ShiftInput MarSystem, which is in turn automatically determined from the number of output samples of the preceding source or MarSystem. A typical example is a SoundFileSource MarSystem followed by a ShiftInput MarSystem. To set the hop size of the sliding window in ShiftInput, one has to set the onSamples control of the SoundFileSource.

The window size can be set with the winSize control.

If the hop size is smaller than the window size, there will be overlap between successive output slices. If the hop size is larger than the window size, the output slices will be trimmed versions of the input slices.

Controls:

• mrs_natural/winSize [rw] : the window size of the sliding window.
• mrs_bool/reset [w] : reset the internal buffer (used in case of overlapping windows) to zero.
• mrs_bool/clean [w] : call for a partial clean of the internal buffer. (limited by lowCleanLimit and highCleanLimit).
• mrs_real/lowCleanLimit [rw] : low limit of a cleaning request (as a portion of the internal buffer size).
• mrs_real/highCleanLimit [rw] : high limit of a cleaning request (as a portion of the internal buffer size).

See also:

SoundFileSource

SoundFileSourceHopper for generating an audio slices from a SoundFileSource in a sliding/hopping window fashion.

Definition at line 70 of file ShiftInput.h.

---

The documentation for this class was generated from the following files:

• /home/marsyas/marsyas/src/marsyas/ShiftInput.h
• /home/marsyas/marsyas/src/marsyas/ShiftInput.cpp