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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11242 a1c6a512-1295-4272-9138-f99709370657
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Martin Arver 2006-10-17 09:31:18 +00:00
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166
manual/configure_rockbox/sound_settings.tex
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@ -7,9 +7,9 @@ change to customize your listening experience.
\section{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 \dap\
can produce without possible distortion (clipping). All values lower than this
reference will be negative and yield a progressively softer volume.
where 0 dB is a reference that indicates the maximum volume that the \dap{}
can produce without possible distortion (clipping). All values lower than
this reference will be negative and yield a progressively softer volume.
\opt{player, recorder, recorderv2fm, ondio, ipodnano, ipodvideo}{
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
@ -86,9 +86,9 @@ change to customize your listening experience.
Karaoke
& Removes all sound that is the same in 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. \\
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. \\
\bottomrule
\end{tabularx}
\end{center}
@ -97,12 +97,12 @@ change to customize your listening experience.
\section{Stereo Width}
Stereo width allows you to manually specify the effect that is applied
when the \setting{Channels} setting is set to \setting{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.
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.
\opt{recorder,recorderv2fm}{
\section{Loudness}
@ -214,9 +214,9 @@ change to customize your listening experience.
versa in order to simulate the spatial cues that the ear and brain receive
when listening to a set of loudspeakers placed in front of the listener. The
result is a more natural stereo image that can be especially appreciated in
older rock and jazz records, where one instrument is often hard-panned to just
one of the speakers. Many people will find such records tiring to listen to
using earphones and no crossfeed effect.
older rock and jazz records, where one instrument is often hard-panned to
just one of the speakers. Many people will find such records tiring to listen
to using earphones and no crossfeed effect.
Crossfeed has the following settings.
\begin{description}
@ -234,7 +234,8 @@ change to customize your listening experience.
of both this setting and the \setting{Cross Gain} setting.
\item[High-Frequency Cutoff]
Decides at which frequency the cross path audio will start to be cut
by the amount described by the \setting{High-Frequency Attenuation} setting.
by the amount described by the \setting{High-Frequency Attenuation}
setting.
\end{description}
Most users will find the default settings to yield satisfactory results, but
@ -260,39 +261,39 @@ change to customize your listening experience.
\textbf{EQ Band(s)} & \textbf{Description} \\\midrule
Band 0: Low shelf filter
& A low shelf filter boosts or lowers all frequencies below the
designated cutoff point. The ``bass''control on most home or car
stereos is an example of a low shelf filter. The low shelf
filter in Rockbox is more flexible than a simple ``bass''
control, because a simple bass control only lets you adjust
the amount of gain that is applied. Rockbox lets you control
the amount of gain that is applied (i.e., the amount that the
bass is boosted or cut) too, but Rockbox also allows you to
adjust the ``cutoff'' frequency where the shelving starts to take
effect. For example, a cutoff frequency of 50 Hz will adjust only very
low frequencies. A cutoff frequency of 200 Hz, on the other hand, will
adjust a much wider range of bass frequencies.. \\
designated cutoff point. The ``bass''control on most home or car
stereos is an example of a low shelf filter. The low shelf
filter in Rockbox is more flexible than a simple ``bass''
control, because a simple bass control only lets you adjust
the amount of gain that is applied. Rockbox lets you control
the amount of gain that is applied (i.e., the amount that the
bass is boosted or cut) too, but Rockbox also allows you to
adjust the ``cutoff'' frequency where the shelving starts to take
effect. For example, a cutoff frequency of 50 Hz will adjust only very
low frequencies. A cutoff frequency of 200 Hz, on the other hand, will
adjust a much wider range of bass frequencies.. \\
%
Bands 1-3: Peaking filters
& Peaking EQ filters boost or low a center frequency that you select,
as well as the frequencies within a certain distance of that
center. Graphic equalizers in home stereos are usually peaking
filters. The peaking EQs on Rockbox's parametric equalizer let
you adjust three different parameters for each EQ band 1
through 3. The ``center'' parameter controls the center
frequency that is adjusted by that EQ band. The ``gain''
parameter controls how much each band is adjusted. Positive
numbers make the EQ band louder, while negative numbers make
that EQ band quieter. Finally, the ``Q'' parameter controls how wide
or narrow each EQ band is. Higher Q values will affect a
narrow band of frequencies, while lower EQ values will affect
a wider band of frequencies. \\
& Peaking EQ filters boost or low a center frequency that you select,
as well as the frequencies within a certain distance of that
center. Graphic equalizers in home stereos are usually peaking
filters. The peaking EQs on Rockbox's parametric equalizer let
you adjust three different parameters for each EQ band 1
through 3. The ``center'' parameter controls the center
frequency that is adjusted by that EQ band. The ``gain''
parameter controls how much each band is adjusted. Positive
numbers make the EQ band louder, while negative numbers make
that EQ band quieter. Finally, the ``Q'' parameter controls how wide
or narrow each EQ band is. Higher Q values will affect a
narrow band of frequencies, while lower EQ values will affect
a wider band of frequencies. \\
%
Band 4: Hi shelf filter
& A high shelf filter boosts or lowers all frequencies above a
designated cutoff point. The ``treble'' control on most home or car
stereos is an example of a high shelf filter. The high shelf filter is
adjusted the same way as the low shelf filter, except that it works on
the high end of the frequency spectrum rather than the low end.\\
& A high shelf filter boosts or lowers all frequencies above a
designated cutoff point. The ``treble'' control on most home or car
stereos is an example of a high shelf filter. The high shelf filter is
adjusted the same way as the low shelf filter, except that it works on
the high end of the frequency spectrum rather than the low end.\\
\bottomrule
\end{tabularx}
\end{center}
@ -306,9 +307,9 @@ change to customize your listening experience.
This option controls whether the EQ is on or off.
\item[Graphical EQ:]
This option brings up a graphic EQ screen, which allows adjustment of each of
the three parameters described above (gain, center frequency, and Q) for each
of the five EQ bands.
This option brings up a graphic EQ screen, which allows adjustment of each of
the three parameters described above (gain, center frequency, and Q) for each
of the five EQ bands.
\begin{table}
\begin{btnmap}{}{}
@ -327,58 +328,59 @@ change to customize your listening experience.
\opt{IRIVER_H100_PAD,IRIVER_H300_PAD,IAUDIO_X5_PAD}{\ButtonRight}
\opt{IPOD_4G_PAD,IPOD_3G_PAD,IPOD_VIDEO_PAD}{\ButtonRight}
& Moves to the next EQ band. \\
%
%
\opt{IRIVER_H100_PAD,IRIVER_H300_PAD}{\ButtonSelect}
\opt{IAUDIO_X5_PAD,IPOD_4G_PAD,IPOD_3G_PAD,IPOD_VIDEO_PAD}{\ButtonSelect}
& Toggles the cursor among the three parameters (gain, center frequency,
Q) for the selected EQ band.\\
%
Q) for the selected EQ band.\\
%
\opt{IRIVER_H100_PAD,IRIVER_H300_PAD}{\ButtonMode}
\opt{IPOD_4G_PAD,IPOD_3G_PAD,IPOD_VIDEO_PAD}{\ButtonMenu}
& Exits the graphic EQ screen.\\
& Exits the graphic EQ screen.\\
\end{btnmap}
\end{table}
\item[Pre-cut:]
If too much gain is added through the graphical EQ, your music may distort.
The \setting{Precut} setting allows you to adjust the overall gain of the EQ.
The \setting{Precut} setting allows you to adjust the overall gain of the EQ.
If your music distorts when using the EQ, trying changing this setting to a
negative value.
\item[Simple EQ:]
This option provides an easier alternative for those who are daunted by all of
the parameters that can be adjusted using the graphical EQ. With the
\setting{Simple EQ}, the only parameter that can be adjusted is the gain.
\item[Simple EQ:]
This option provides an easier alternative for those who are daunted by all of
the parameters that can be adjusted using the graphical EQ. With the
\setting{Simple EQ}, the only parameter that can be adjusted is the gain.
\item[Advanced EQ:]
This submenu provides options for adjusting the same parameters as the
\setting{Graphical EQ}. The only difference is that the parameters are
adjusted through textual menus rather than through a graphic interface.
\item[Save EQ Preset:]
This option saves the current EQ configuration in a \fname{.cfg} file.
\item[Browse EQ Presets:]
This menu displays a list EQ presets, as well as any EQ configurations saved
using the \setting{Save EQ Preset} option. Users unfamiliar with the
operation of a parametric EQ may wish to use the presets instead of trying to
configure the EQ, or use the presets for designing their own custom EQ
settings.
\item[Advanced EQ:]
This submenu provides options for adjusting the same parameters as the
\setting{Graphical EQ}. The only difference is that the parameters are
adjusted through textual menus rather than through a graphic interface.
\item[Save EQ Preset:]
This option saves the current EQ configuration in a \fname{.cfg} file.
\item[Browse EQ Presets:]
This menu displays a list EQ presets, as well as any EQ configurations saved
using the \setting{Save EQ Preset} option. Users unfamiliar with the
operation of a parametric EQ may wish to use the presets instead of trying to
configure the EQ, or use the presets for designing their own custom EQ
settings.
\end{description}
}
\opt{ipodvideo}{
\section{Hardware EQ}
This function controls the EQ that is built into the hardware of your
\playerman{}. The hardware EQ functions similarly to the Graphical EQ in that
it allows adjustmnet of several parameters. However, unlike the Graphical EQ,
the Hardware EQ allows the user to choose from a limited number of settings
for ``Center Frequency'' and ``Bandwidth'' (``Bandwidth'' in the Hardware EQ
is similar to ``Q'' in the Graphical EQ).
\note{While the \setting{Hardware EQ} menu shows Low Shelf, three peaking
filters, and High Shelf, the peaking filters are not currently operational.}
This function controls the EQ that is built into the hardware of your
\playerman{}. The hardware EQ functions similarly to the Graphical EQ in that
it allows adjustmnet of several parameters. However, unlike the Graphical EQ,
the Hardware EQ allows the user to choose from a limited number of settings
for ``Center Frequency'' and ``Bandwidth'' (``Bandwidth'' in the Hardware EQ
is similar to ``Q'' in the Graphical EQ).
\note{While the \setting{Hardware EQ} menu shows Low Shelf, three peaking
filters, and High Shelf, the peaking filters are not currently operational.}
}