path: root/manual/configure_rockbox/sound_settings.tex
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authorMoshe Piekarski <>2020-11-16 18:14:31 -0500
committerMoshe Piekarski <>2020-11-18 14:35:09 +0000
commit0aa702836bd0be397c010ebd677bd673b7f900af (patch)
treec171f8f2bf9781cfe2a34a584faa69349853983e /manual/configure_rockbox/sound_settings.tex
parent7c87467ba4d6f6fabca5b167e1233d4cca1671ca (diff)
Manual: remove most HWCODEC artifacts
This causes 3 changes in layout. 2 I can't track down and 1 is better this way. Change-Id: If4ad5e1d7431b4c2cbaaf9767d78139ef4e2dc44
Diffstat (limited to 'manual/configure_rockbox/sound_settings.tex')
1 files changed, 0 insertions, 16 deletions
diff --git a/manual/configure_rockbox/sound_settings.tex b/manual/configure_rockbox/sound_settings.tex
index c4ef325689..63a5770c41 100644
--- a/manual/configure_rockbox/sound_settings.tex
+++ b/manual/configure_rockbox/sound_settings.tex
@@ -197,7 +197,6 @@ change to customise your listening experience.
Crossfeed attempts to make the experience of listening to music on
headphones more similar to listening to music with stereo speakers. When you
@@ -250,9 +249,7 @@ change to customise your listening experience.
Beware that the crossfeed function is capable of making the audio distort
if you choose settings which result in a too high output level.
\screenshot{configure_rockbox/images/ss-equalizer}{The graphical equalizer}{}
Rockbox features a parametric equalizer (EQ). In contrast to non-parametric
@@ -472,9 +469,7 @@ configure the EQ, or use the presets for designing their own custom EQ
This setting controls the dithering and noise shaping functionality of Rockbox.
@@ -500,9 +495,7 @@ and not easily noticable.
Rockbox uses highpass triangular distribution noise as the dithering noise
source, and a third order noise shaper.
Enabling \setting{Timestretch} allows you to change the playback speed without
@@ -512,9 +505,7 @@ intended for speech playback and may significantly dilute your listening
experience with more complex audio. See \reference{sec:pitchscreen} for more
details about how to use the feature.
\section{Haas Surround}
This setting implements the Haas effect with adjustable delay time to enhance
the stereo effect of the sound. A full range Haas effect creates the impression
@@ -526,25 +517,19 @@ and \setting{f(x2)} to set frequencies which are not affected. The \setting{SIDE
setting uses mid-side processing to determine and apply effect to the side channel only.
Finally, the \setting{Dry/Wet Mix} setting adjusts the proportion mixed from the
original (dry) and 'effected' (wet) signals.
\section{Perceptual Bass Enhancement}
This setting implements a group delay correction and an additional biophonic EQ to
emphasize to boost bass perception. The \setting{precut} setting provides
negative overall gain to prevent possible audio distortion due to the EQ
gain. The defult precut value is set to -2.5 dB and can be adjust from 0 dB to -4.5 dB.
Note that this effect will stack with any other EQ applied.
\section{Auditory Fatigue Reduction}
Human hearing is more senstive to some frequency bands. This setting applies additional
equalization and bi-shelf filtering to reduce signals in these bands to minimize
the chance that temporary threshold shift (auditory fatigue) occurs.
The \setting{Compressor} reduces, or compresses, the dynamic range of the audio
signal. This makes the quieter and louder sections closer to the same volume
@@ -592,4 +577,3 @@ the input signal is reduced appropriately, but the gain isn't allowed to
immediately return to normal levels. This is necessary to reduce artifacts
such as ``pumping.'' Instead, the gain is allowed to return to normal at the
chosen rate. Release Time is the time for the gain to recover by 10~dB.