One of the types of objects in Praat.
A PointProcess object represents a point process, which is a sequence of points ti in time, defined on a domain [tmin, tmax]. The index i runs from 1 to the number of points. The points are sorted by time, i.e. ti+1 > ti.
PointProcess commands
Creation from scratch:
- • Create empty PointProcess...
- • Create Poisson process...
Creation of a pulse train from a pitch contour:
- • PitchTier: To PointProcess: area-1 along entire time domain.
- • Pitch: To PointProcess: same, but excludes voiceless intervals.
- • Sound & Pitch: To PointProcess (cc): "pitch-synchronous": near locations of high amplitude.
- • Sound & Pitch: To PointProcess (peaks)...: "pitch-synchronous": near locations of high amplitude.
- • Sound: To PointProcess (periodic, cc)...: near locations of high amplitude.
- • Sound: To PointProcess (periodic, peaks)...: near locations of high amplitude.
Creation from converting another object:
- • Matrix: To PointProcess
- • PitchTier: Down to PointProcess
- • IntensityTier: Down to PointProcess
Hearing:
- • PointProcess: Play: pulse train.
- • PointProcess: Hum: pulse train with formants.
Drawing:
- • PointProcess: Draw...
Editing:
- • PointProcess: View & Edit: invokes a PointEditor.
- • PointProcess & Sound: View & Edit: invokes a PointEditor.
- • Inside a ManipulationEditor.
Queries:
- • PointProcess: Get jitter (local)...: periodic jitter.
- • PointProcess: Get jitter (local, absolute)...: periodic jitter.
- • PointProcess: Get jitter (rap)...: periodic jitter.
- • PointProcess: Get jitter (ppq5)...: periodic jitter.
- • PointProcess: Get jitter (ddp)...: periodic jitter.
- • PointProcess: Get low index...: index of nearest point not after specified time.
- • PointProcess: Get high index...: index of nearest point not before specified time.
- • PointProcess: Get nearest index...: index of point nearest to specified time.
- • PointProcess: Get interval...: duration of interval around specified time.
Set calculations:
- • PointProcesses: Union: the union of two point processes.
- • PointProcesses: Intersection: the intersection of two point processes.
- • PointProcesses: Difference: the difference of two point processes.
Modification:
- • PointProcess: Add point...: at a specified time.
- • PointProcess: Add points...: at specified times.
- • PointProcess: Remove point...: at specified index.
- • PointProcess: Remove point near...: near specified time.
- • PointProcess: Remove points...: between specified indices.
- • PointProcess: Remove points between...: between specified times.
Analysis:
- • PointProcess: To PitchTier...: pitch values in interval centres.
- • PointProcess & Sound: To Manipulation
Synthesis:
- • PointProcess: To Sound (pulse train)...
- • PointProcess: To Sound (hum)...
Conversion:
- • PointProcess: To Matrix
- • PointProcess: Up to TextGrid...
- • PointProcess: Up to PitchTier...
- • PointProcess: Up to IntensityTier...
Links to this page
© ppgb 20110128