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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » javax.microedition.media.control

Source Cross Reference Class Diagram Java Document (Java Doc)

javax.microedition.media.control .PitchControl

All known Subclasses:   com.sun.mmedia .DirectMIDIControl,
PitchControl
public interface PitchControl extends javax.microedition.media.Control(Code)
PitchControl raises or lowers the playback pitch of audio without changing the playback speed.
PitchControl can be implemented in Players for MIDI media or sampled audio. It is not possible to set audible output to an absolute pitch value. This control raises or lowers pitch relative to the original.
The pitch change is specified in number of "milli- semitones" to raise the pitch. As an example, specifying a pitch of 12'000 results in playback one octave higher. For MIDI that means that all MIDI notes are raised by 12 (semitones). For sampled audio playback, it means doubling the frequency of perceived sounds (i.e. a 440Hz sound will become a 880Hz sound.). Negative values are used to lower the pitch.
All Players by default support 0, or no pitch change. A Player which supports only 0 pitch change must not implement PitchControl.
PitchControl does not influence playback volume in any way.
See Also:   javax.microedition.media.Player
See Also:   javax.microedition.media.control.RateControl
See Also:   javax.microedition.media.control.TempoControl

Method Summary
int getMaxPitch()
     Gets the maximum playback pitch raise supported by the Player.
int getMinPitch()
     Gets the minimum playback pitch raise supported by the Player.
int getPitch()
     Gets the current playback pitch raise.
int setPitch(int millisemitones)
     Sets the relative pitch raise. The pitch change is specified in "milli- semitones", i.e.

Method Detail
getMaxPitch
int getMaxPitch()(Code)
Gets the maximum playback pitch raise supported by the Player. the maximum pitch raise in "milli-semitones".

getMinPitch
int getMinPitch()(Code)
Gets the minimum playback pitch raise supported by the Player. the minimum pitch raise in "milli-semitones".

getPitch
int getPitch()(Code)
Gets the current playback pitch raise. the current playback pitch raise in "milli-semitones".
See Also:   PitchControl.setPitch

setPitch
int setPitch(int millisemitones)(Code)
Sets the relative pitch raise. The pitch change is specified in "milli- semitones", i.e. 1000 times the number of semitones to raise the pitch. Negative values lower the pitch by the number of milli-semitones.
The setPitch() method returns the actual pitch change set by the javax.microedition.media.Player Player . Players should set their pitch raise as close to the requested value as possible, but are not required to set it to the exact value of any argument other than 0. A Player is only guaranteed to set its pitch change exactly to 0. If the given pitch raise is less than the value returned by getMinPitch or greater than the value returned by getMaxPitch, it will be adjusted to the minimum or maximum supported pitch raise respectively.
Parameters:
  millisemitones - The number of semi tones to raise the playback pitch.It is specified in "milli-semitones". The actual pitch raise set in "milli-semitones".
See Also:   PitchControl.getPitch

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