Fix some language in the sound settings manual.

Change-Id: Ia487a903a221dda6cb81cf409cd18d1fb6522123

1 files changed, 16 insertions, 13 deletions

diff --git a/manual/configure_rockbox/sound_settings.tex b/manual/configure_rockbox/sound_settings.tex
index 3fe7efbade..3ac346d256 100644
--- a/manual/configure_rockbox/sound_settings.tex
+++ b/manual/configure_rockbox/sound_settings.tex
@@ -592,29 +592,32 @@ details about how to use the feature.
 
 \opt{swcodec}{
 \section{Haas Surround}
-This setting does Haas effect with adjustable delay time to enhance the stereo stage
-of the sound. A full range haas effect may sounds like everything starts from left channel ends at right.
-Therefore, four additional functions are provided to move the stage back to the center:
-First is a \setting{Balance} setting for change left-right channel output ratio.  Second
-is a bypass band for frequency mostly contain vocals, using \setting{f(x1)}, \setting{f(x2)} to reserved the
-frequncy range. The \setting{SIDE ONLY} setting uses mid-side
-processing to determine and apply effect to side only. And finally, a \setting{Dry/Wet Mix}
-to adjust the proportion of mix between the original (dry) and 'effected' (wet) signals.
+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
+that sound  starts from one channel and ends in the other.  Therefore, four additional 
+functions are provided to move the stage back to the center:
+\setting{Balance} to change the left-right channel output ratio.  
+A bypass band for frequencies that mostly contain vocals, using \setting{f(x1)}, 
+and \setting{f(x2)} to set frequencies which are not affected. The \setting{SIDE ONLY} 
+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.
 }
 
 \opt{swcodec}{
 \section{Perceptual Bass Enhancement}
-This setting dose a group delay correction and an additional Biophonic EQ to
-emphasize the clarity of the sounds. The \setting{Precut} setting provides
+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.  
 }
 
 \opt{swcodec}{
 \section{Auditory Fatigue Reduction}
-Human hearing are most senstive to some frequency bands, and this setting applies custom presets
-of equalization and bi-shelf filter to reduce signals in those bands to minimize
-the chance that temporary threshold shift (Auditory Fatigue) occurs.
+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.
 }
 
 \opt{swcodec}{