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  1. diff --git a/manual/configure_rockbox/sound_settings.tex b/manual/configure_rockbox/sound_settings.tex
  2. index 3a33782..30f36ff 100644
  3. --- a/manual/configure_rockbox/sound_settings.tex
  4. +++ b/manual/configure_rockbox/sound_settings.tex
  5. @@ -586,6 +586,35 @@ details about how to use the feature.
  6.  }
  7.  
  8.  \opt{swcodec}{
  9. +\section{Haas Surround}
  10. +This setting does Haas effect with adjustable delay time to enhance the stereo stage
  11. +of the sound. A full range haas effect may sounds like everything starts from left channel ends at right.
  12. +Therefore, four additional functions are provided to move the stage back to the center:
  13. +First is a \setting{Balance} setting for change left-right channel output ratio.  Second
  14. +is a bypass band for frequency mostly contain vocals, using \setting{f(x1)}, \setting{f(x2)} to reserved the
  15. +frequncy range. The \setting{SIDE ONLY} setting uses mid-side
  16. +processing to determine and apply effect to side only. And finally, a \setting{Dry/Wet Mix}
  17. +to adjust the proportion of mix between the original (dry) and 'effected' (wet) signals.
  18. +}
  19. +
  20. +\opt{swcodec}{
  21. +\section{Perceptual Bass Enhancement}
  22. +This setting dose a group delay correction with bi-shelf filter boost to
  23. +emphasize the clarity of the sounds. The \setting{Precut} setting provides
  24. +negative overall gain to prevent possible audio distortion due to bi-shelf filter
  25. +boost.  The defult precut value is -2.5 dB and can be adjust from 0 dB to -4.5 dB.
  26. +a Dry/Wet Mix is also provided with a default 0 percent.
  27. +This option minipulated the sound like a flanger.
  28. +}
  29. +
  30. +\opt{swcodec}{
  31. +\section{Auditory Fatigue Reduction}
  32. +Human hearing are most senstive to some frequency bands, and this setting applies custom presets
  33. +of equalization and bi-shelf filter to reduce signals in those bands to minimize
  34. +the chance that temporary threshold shift (Auditory Fatigue) occurs.
  35. +}
  36. +
  37. +\opt{swcodec}{
  38. \section{Compressor}
  39. The \setting{Compressor} reduces, or compresses, the dynamic range of the audio
  40.  signal.  This makes the quieter and louder sections closer to the same volume
  41. --
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