CHORD-SEQ-ANALYSIS

[GENERIC-FUNCTION]


OM-pm2
Function Reference
ARGUMENTS:
  - SELF  
&key
 
  - BEGIN-T  
  - END-T  
  - MARKERS  
  - MAX-PARTIALS [default = 12]
  - AMP-TRESHOLD [default = -40]
  - ANALYSIS-TYPE [default = "averaged-spectrum"]
  - WINDOWSIZE [default = 4096]
  - FFTSIZE [default = 4096]
  - STEP [default = 256]
  - WINDOWTYPE [default = "hanning"]
  - OUT [default = "chordseqs.sdif"]

Description:

Tracks sinusoidal chords in an audio file and returns an SDIF sound description file.

- FileName : the pathname of the sound file (Aiff) to be analysed

- begin-t : begin time of analysis (s)

- end-t : end time of analysis (s)

- markers : markers for analysis (text file). If nil, markers of filename are used.

- max-partials : the maximum number of simultaneous partials

- amp-treshold : Amplitude treshold of analysis (-120 -> 0 dB)

- analysis-type : type of analysis ('averaged-spectrum or 'inharmonic-partial-averaging).
for inharmonic partial averaging, connect partial connection parameters if needed :
- Relative frequency derivation (mc)
- Constant frequency derivation (Hz)
- Relative amplitude derivation (%)
- Source partial neighbors
- target partial neighbors (>= source partial neighbors)
- time gap to connect over (s)
- frequency gap to connect over (mc)
- minimum partial length (s)

- windowsize : the number of samples of the analysis window

- fftsize : the number of points of fft

- step : the number of samples between two successive analysis windows

- windowtype : the shape of the analysis window




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