User manual

MDB Harmonics
MDB HarmonicsMDB Harmonics
MDB Harmonics: The percentage of the low notes that is converted into
harmonics. If low notes are causing speaker distortion, this can be set to 100%
to eliminate the fundamental completely and only produce harmonics in the
signal. If set to 0% this is the same as turning the MDB feature off.
MDB Centre Frequency:
MDB Centre Frequency: MDB Centre Frequency:
MDB Centre Frequency: The cutoff frequency of your headphones or
speakers. This is usually given in the specification for the
headphones/speakers.
MDB shape:
MDB shape: MDB shape:
MDB shape: It is recommended that this parameter be set to 1.5 times the
centre frequency.
This is the frequency up to which harmonics are generated. Some of the
lower fundamentals near the cut-off range will have their lower harmonics cut
off, since they will be below the range of the speakers. Fundamentals
between the cut-off frequency and the lower frequency will have their
harmonics proportionally boosted to compensate and restore the 'loudness'
of these notes.
For most users, the defaults should provide an improvement in sound quality
and can be safely left as they are. For reference, the defaults Rockbox uses
are:
SETTING
SETTING SETTING
SETTING VALUE
VALUE VALUE
VALUE
MDB Strength 50dB
MDB Harmonics 48%
MDB Centre Frequency 60Hz
MDB Shape 90Hz
2
2 2
2 General Settings
General SettingsGeneral Settings
General Settings
Recorder general settings Player general settings
2.1
2.1 2.1
2.1 Playback Options
Playback OptionsPlayback Options
Playback Options
This menu is for configuring settings related to MP3 playback
Shuffle
ShuffleShuffle
Shuffle
Select shuffle ON/OFF. This alters how Rockbox will select which next song to
play.
Part 4: Configuring Rockbox 33