Tune Changer - Time Stretch & Pitch Shift Player

Tune Changer is a music player that controls pitch and speed of the song in real time.

[Main function]
- The function to import the music data of the iPod (music) in this app.
- Time stretch (change the speed while maintaining the pitch) in real time. (75 - 150%)
- Pitch shift (change the pitch while maintaining the speed) in real time. (-6 ~ +6)
- The waveform display, can easily be set to check / playback position graphical music data.
- Supports background playback.
- Can easily loop playback of the entire, five seconds before and after, and move to the top.

[Use cases]
- Karaoke's training. (Can be changed speed units of 10%, pitch shift in semitones easily)
- Can playback at reduced tempo to copy phrase for guitar or bass, the keyboard instrument.
- Can playback by changing the pitch to play by changing the key in the band performance. (Developer himself has experience)


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The main screen has 4 areas.

1. File area
First you should choose [File] button.
[File] button
It move to 'File choice' screen.
[info] button
It move to 'this' screen.
[iPod] button (File choice screen)
It opens iPod screen. The file you chose is read in this app.
[Edit] button (File choice screen)
You can delete the file is read in this app you chose.

2. Show time area
It shows 'Current time / Total time', 'loop start time', 'loop end time'.
[back to top] button
It comes back to the top of the file.
[Loop] button
It switches 'Once / Loop'.
[Loop Start Time] label, [Loop End Time] label
You can adjust the loop interval when you tap the label of each part.

3. Wave view area
It shows wave pattern of the file you chose.
You can zoom and scroll wave pattern by pinch in / pinch out.
The cursor moves current position. You can move the cursor (current play position) when it drags that or does double tap wave view.
The lower cursor moves current position. You can move it (current play position) when you drag it horizontally or tap double wave view.
The upper cursors set the loop section. You can move it when you drag it horizontally. Please press [Loop] button to enable loop play.

4. Control area
It plays file, sets 'time stretch' / 'pitch shift' value.
[-5] [+5] button
It steps -5 / +5 from current time.
[Play] button
It switches 'Start / Stop'.
Time stretch supports 75 - 150% speed.
Pitch shift supports -6 - +6 pitch.
It changes 'time stretch' / 'pitch' by slider or upper / lower button.
[Reset] button
It shows current 'time stretch' / 'pitch shift' value. And 'time stretch' / 'pitch shift' value is reset when It pushes the button.