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6  Sound Settings


PIC

Figure 6.1.: The sound settings screen

The sound settings menu offers a selection of sound settings you may change to customise your listening experience.

6.1 Volume
6.2 Bass
6.3 Volume Limit
6.4 Treble
6.5 Balance
6.6 Channels
6.7 Stereo Width

6.1  Volume

This setting adjusts the volume of your music. Like most professional audio gear and many consumer audio products, Rockbox uses a decibel scale where 0 dB is a reference that indicates the maximum volume that the player can produce without possible distortion (clipping). All values lower than this reference will be negative and yield a progressively softer volume. Values higher than 0 dB are available and can be used to raise the volume more than would otherwise be possible. These volume levels will ordinarily lead to distorted sound, but might work nicely for music that has an otherwise low volume level. The volume can be adjusted from a minimum of -78 dB to a maximum of +18 dB.

6.2  Bass

This setting emphasises or suppresses the lower (bass) frequencies in the sound. A value of 0 dB means that bass sounds are unaltered (flat response). The minimum setting is -15 dB and the maximum is 15 dB.

6.3  Volume Limit

This setting adjusts the maximum volume of your music. The setting is by default set to the maximum volume which equals to no limit. To set a volume limit, select a volume from the list and the maximum volume will be limited to the selected value all over the system.

6.4  Treble

This setting emphasises or suppresses the higher (treble) frequencies in the sound. A value of 0 dB means that treble sounds are unaltered (flat response). The minimum setting is -15 dB and the maximum is 15 dB.

6.5  Balance

This setting controls the balance between the left and right channels. The default, 0, means that the left and right outputs are equal in volume. Negative numbers increase the volume of the left channel relative to the right, positive numbers increase the volume of the right channel relative to the left.

6.6  Channels

A stereo audio signal consists of two channels, left and right. The Channels setting determines if these channels are to be combined in any way, and if so, in what manner they will be combined. Available options are:

Stereo.
Leave the audio signal unmodified.
Mono.
Combine both channels and send the resulting signal to both stereo channels, resulting in a monophonic output.
Custom.
Allows you to manually specify a stereo width with the Stereo Width setting described later in this chapter.
Mono Left.
Plays the left channel in both stereo channels.
Mono Right.
Plays the right channel in both stereo channels.
Karaoke.
Removes all sound that is common to both channels. Since most music is recorded with vocals being equally present in both channels to make the singer sound centrally placed, this often (but not always) has the effect of removing the voice track from a song. This setting also very often has other undesirable effects on the sound.

6.7  Stereo Width

Stereo width allows you to manually specify the effect that is applied when the Channels setting is set to “custom”. All values below 100% will progressively mix the contents of one channel into the other. This has the effect of gradually centering the stereo image, until you have monophonic sound at 0%. Values above 100% will progressively remove components in one channel that is also present in the other. This has the effect of widening the stereo field. A value of 100% will leave the stereo field unaltered.