Specifications

Chapter 4. Browsing and playing 33
Pitch
The Pitch Screen allows you to change the rate of playback (i.e. the playback speed
and at the same time the pitch) of your player. The rate value can be adjusted between
50% and 200%. 50% means half the normal playback speed and a pitch that is an octave
lower than the normal pitch. 200% means double playback speed and a pitch that is an
octave higher than the normal pitch.
The rate can be changed in two modes: procentual and semitone. Initially, procentual
mode is active.
If you’ve enabled the Timestretch option in Sound Settings and have since re-
booted, you can also use timestretch mode. This allows you to change the playback
speed without affecting the pitch, and vice versa.
In timestretch mode there are separate displays for pitch and speed, and each can be
altered independently. Due to the limitations of the algorithm, speed is limited to be
between 35% and 250% of the current pitch value. Pitch must maintain the same ratio
as well as remain between 50% and 200%.
The value of the rate, pitch and speed is not persistent, i.e. after the player is turned
on it will always be set to 100%. However, the rate, pitch and speed information will be
stored in any bookmarks you may create (see section 8.7 (page 69)) and will be restored
upon playing back those bookmarks.
Key Remote Key Action
Select Mode Toggle pitch changing mode (cycle
through all available modes).
Up / Down Volume Up /
Volume Down
Increase / Decrease pitch by 0.1% (in
procentual mode) or 0.1 semitone (in
semitone mode).
Long Up / Long
Down
Long Volume
Up / Long
Volume Down
Increase / Decrease pitch by 1% (in pro-
centual mode) or a semitone (in semitone
mode).
Left / Right Rewind /
Forward
Temporarily change pitch by 2% (beat-
match), or modify speed (in timestretch
mode).
Power Rec Reset pitch and speed to 100%.
Play Play Leave the Pitch Screen.
4.4. Working with Playlists
4.4.1. Playlist terminology
Some common terms that are used in Rockbox when referring to playlists:
The Rockbox manual (version rUnversioned directory-150517) Iaudio M5