Equalizer - SanDisk Sansa Clip v2 Manual

Chapter 6. Sound Settings

6.9. Equalizer

Rockbox features a parametric equalizer (EQ). In contrast to non-parametric equalizers,
a parametric EQ enables adjusting the center frequency, gain, and width of EQ bands
separately. The ability to adjust the frequency and width of bands enables more precise
control of the EQ frequency response while avoiding the use of a large number of bands
(often 12+) needed in a non-parametric EQ.
The graphic below illustrates how the width of 10kHz band can be adjusted to cover
a wider (lower Q) or narrower (higher Q) range of frequencies.
In some ways the EQ is similar to the Bass and Treble settings described earlier, but
the EQ allows you to control the sound much more carefully. Note that the parameteric
EQ bands will be applied in addition to any bass or treble tone controls.
Note: A maximum of 10 EQ bands are possible on most devices, but using more than
are required will waste battery and introduce additional rounding noise. For best results,
use the fewest number of bands required.
Rockbox's parametric EQ is composed of up to ten different bands:
Band 0: Low shelf filter. The low shelf filter boosts or lowers all frequencies below a
The Rockbox manual
Figure 6.2.: The graphical equalizer
(version 3.14)
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Sansa Clip v2