pav::lib::visualizer::MelSpectrum Class Reference

List of all members.

Public Member Functions
	MelSpectrum ()
void	process () throws PAVException
void	setNumBands (int num)
void	setBorderColor (int color)
void	quantize (int steps)
void	filter (float[] filter)
void	rememberMax (boolean remember)
String	toString ()
void	dispose ()

---

Detailed Description

Draws a MEL spectrum of the currently playing audio data.

Author:

christopher

---

Constructor & Destructor Documentation

pav::lib::visualizer::MelSpectrum::MelSpectrum

(

)

[inline]

Ctor.

---

Member Function Documentation

void pav::lib::visualizer::MelSpectrum::dispose

(

)

[inline]

Disposes this visualizer, releasing all resources that were used exclusively by this visualiter. Subsequent calls to any methods of the visualizer might cause exceptions.

Implements pav::lib::visualizer::Visualizer.

void pav::lib::visualizer::MelSpectrum::filter

(

float[]

filter

)

[inline]

Filters the calculated spectrum intensities before displaying them. The process is simply carried out by multiplying the i-th spectrum intensity with the i-th value in the filter. Thus, the filter length must not be longer than the number of calculated bands, but it can be lower.

Parameters:

filter

The filter to use or null to disable filtering. Filter length must not be larger than numBands.

void pav::lib::visualizer::MelSpectrum::process

(

)

throws PAVException [inline]

Draws to the PApplet specified by drawTo.

Exceptions:

PAVException

If an error occures while drawing

Implements pav::lib::visualizer::Visualizer.

void pav::lib::visualizer::MelSpectrum::quantize

(

int

steps

)

[inline]

Sets the number of steps to use for quantization of the spectrum values or disables quantization.

Parameters:

steps

The number of quantization steps. Set to <= 0 to disable quantization

void pav::lib::visualizer::MelSpectrum::rememberMax

(

boolean

remember

)

[inline]

Before drawing the maximum intensity of the spectrum data is calculated so that the output can be scaled properly. This method sets whether the maximum will be saved and reused.

Parameters:

remember

Whether or not to remember the max intensity

void pav::lib::visualizer::MelSpectrum::setBorderColor

(

int

color

)

[inline]

Sets the color to use when drawing the borders of the frequency bands.

Parameters:

color

The color to use when drawing

void pav::lib::visualizer::MelSpectrum::setNumBands

(

int

num

)

[inline]

Sets the number of mel bands to compute. Must be > 0.

Parameters:

num

The number of mel bands

String pav::lib::visualizer::MelSpectrum::toString

(

)

[inline]

Returns a short string representation of this visualizer.

Returns:

visualizer info

Implements pav::lib::visualizer::Visualizer.

---

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

• src/pav/lib/visualizer/MelSpectrum.java