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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14736 a1c6a512-1295-4272-9138-f99709370657
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Peter D'Hoye 2007-09-17 19:30:25 +00:00
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manual/configure_rockbox/recording_settings.tex
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% $Id:$ % % $Id:$ %
\screenshot{main_menu/images/ss-recording-settings}{The recording settings screen}{} \screenshot{main_menu/images/ss-recording-settings}{The recording settings screen}{}
\note{To change the location where recordings are stored open the \note{To change the location where recordings are stored open the
\setting{File Menu} (see \reference{ref:Filemenu}) on the directory \setting{File Menu} (see \reference{ref:Filemenu}) on the directory
where you want to store them in the \setting{File Browser} and select where you want to store them in the \setting{File Browser} and select
\setting{Set As Recording Directory}.} \setting{Set As Recording Directory}.}
\opt{MASCODEC}{ \opt{MASCODEC}{
\section{Quality} \section{Quality}
Choose the quality here (0 to 7). Default is 5, best quality is 7, Choose the quality here (0 to 7). Default is 5, best quality is 7,
smallest file size is 0. This setting effects how much your sound smallest file size is 0. This setting effects how much your sound
sample will be compressed. Higher quality settings result in larger sample will be compressed. Higher quality settings result in larger
MP3 files. MP3 files.
The quality setting is just a way of selecting an average bit rate, The quality setting is just a way of selecting an average bit rate,
or number of bits per second, for a recording. When this setting or number of bits per second, for a recording. When this setting
is lowered, recordings are compressed more (meaning worse sound quality), is lowered, recordings are compressed more (meaning worse sound quality),
and the average bitrate changes as follows. and the average bitrate changes as follows.
\begin{table}[h!] \begin{table}[h!]
\begin{center} \begin{center}
\begin{tabularx}{0.75\textwidth}{lX}\toprule \begin{tabularx}{0.75\textwidth}{lX}\toprule
\emph{Frequency} & \emph{Bitrate} (Kbit/s) -- quality 0$\rightarrow$7 \\\midrule \emph{Frequency} & \emph{Bitrate} (Kbit/s) -- quality 0$\rightarrow$7 \\\midrule
44100Hz stereo & 75, 80, 90, 100, 120, 140, 160, 170 \\ 44100Hz stereo & 75, 80, 90, 100, 120, 140, 160, 170 \\
22050Hz stereo & 39, 41, 45, 50, 60, 80, 110, 130 \\ 22050Hz stereo & 39, 41, 45, 50, 60, 80, 110, 130 \\
44100Hz mono & 65, 68, 73, 80, 90, 105, 125, 140 \\ 44100Hz mono & 65, 68, 73, 80, 90, 105, 125, 140 \\
22050Hz mono & 35, 38, 40, 45, 50, 60, 75, 90 \\\bottomrule 22050Hz mono & 35, 38, 40, 45, 50, 60, 75, 90 \\\bottomrule
\end{tabularx} \end{tabularx}
\end{center} \end{center}
\end{table} \end{table}
} }
\opt{SWCODEC}{ \opt{SWCODEC}{
\section{Format} \section{Format}
Choose which format to save your recording in. The available choices are Choose which format to save your recording in. The available choices are
the two uncompressed formats \setting{PCM Wave} and \setting{AIFF}, the the two uncompressed formats \setting{PCM Wave} and \setting{AIFF}, the
losslessly compressed \setting{WavPack} and the lossy losslessly compressed \setting{WavPack} and the lossy
\setting{MPEG Layer 3}. \setting{MPEG Layer 3}.
\section{Encoder Settings} \section{Encoder Settings}
This sets the bitrate when using the \setting{MPEG Layer 3} format. And has This sets the bitrate when using the \setting{MPEG Layer 3} format. And has
no settings for the other formats. no settings for the other formats.
} }
\section{Frequency} \section{Frequency}
\nopt{e200}{ \nopt{e200}{
Choose the recording frequency (sample rate). Choose the recording frequency (sample rate).
\opt{MASCODEC}{48kHz, 44.1kHz, 32kHz, 24kHz, 22.05kHz, 16kHz} \opt{MASCODEC}{48kHz, 44.1kHz, 32kHz, 24kHz, 22.05kHz, 16kHz}
\opt{h1xx,h300}{44.1kHz, 22.05kHz and 11.025kHz} \opt{h1xx,h300}{44.1kHz, 22.05kHz and 11.025kHz}
\opt{x5}{88.2kHz, 44.1kHz, 22.05kHz and 11.025kHz} \opt{x5}{88.2kHz, 44.1kHz, 22.05kHz and 11.025kHz}
are available. Higher sample rates use up more disk space, but give better are available. Higher sample rates use up more disk space, but give better
sound quality. sound quality.
\opt{SWCODEC}{\note{The 11.025kHz setting is not available when using% \opt{SWCODEC}{\note{The 11.025kHz setting is not available when using%
\setting{MPEG Layer 3} format.} \setting{MPEG Layer 3} format.}
}% }%
\opt{MASCODEC}{ \opt{MASCODEC}{
The frequency setting also determines which version of the MPEG standard The frequency setting also determines which version of the MPEG standard
the sound is recorded using:\\ the sound is recorded using:\\
MPEG v1 for 48, 44.1 and 32\\ MPEG v1 for 48, 44.1 and 32\\
MPEG v2 for 24, 22.05 and 16\\ MPEG v2 for 24, 22.05 and 16\\
} }
\opt{recorder,recorderv2fm,h1xx} \opt{recorder,recorderv2fm,h1xx}
{\note{You cannot change the sample rate for digital recordings.} {\note{You cannot change the sample rate for digital recordings.}
} }
} % nopt e200 } % nopt e200
\opt{e200}{ \opt{e200}{
Recordings can only be made at a 22.05kHz frequency (sample rate) Recordings can only be made at a 22.05kHz frequency (sample rate)
on this \dap. on this \dap.
} % opt e200 } % opt e200
\section{Source} \section{Source}
Choose the source of the recording. This can be Choose the source of the recording. This can be
\opt{recorder,recorderv2fm,h1xx}{\setting{SPDIF (digital)},}% \opt{recorder,recorderv2fm,h1xx}{\setting{SPDIF (digital)},}%
\setting{Mic} or \setting{Line In}. \setting{Mic} or \setting{Line In}.
\opt{CONFIG_TUNER}{For recording from the radio see \reference{ref:FMradio}.} \opt{CONFIG_TUNER}{For recording from the radio see \reference{ref:FMradio}.}
\section{Channels} \section{Channels}
This allows you to select mono or stereo recording. Please note that This allows you to select mono or stereo recording. Please note that
for mono recording, only the left channel is recorded. Mono recordings for mono recording, only the left channel is recorded. Mono recordings
are usually somewhat smaller than stereo. are usually somewhat smaller than stereo.
\opt{MASCODEC}{ \opt{MASCODEC}{
\section{Independent Frames} \section{Independent Frames}
The independent frames option tells the \dap{} to encode with the bit The independent frames option tells the \dap{} to encode with the bit
reservoir disabled, so the frames are independent of each other. This reservoir disabled, so the frames are independent of each other. This
makes a file easier to edit. makes a file easier to edit.
} }
\section{File Split Options} \section{File Split Options}
This sub menu contains options for file splitting, which can be used to split This sub menu contains options for file splitting, which can be used to split
up long recordings into manageable pieces. The splits are seamless (frame up long recordings into manageable pieces. The splits are seamless (frame
accurate), no audio is lost at the split point. The break between recordings accurate), no audio is lost at the split point. The break between recordings
is only the time required to stop and restart the recording, on the order of is only the time required to stop and restart the recording, on the order of
2 -- 4 seconds. 2 -- 4 seconds.
\begin{description} \begin{description}
\item[Split Measure:] \item[Split Measure:]
This option controls wether to split the recording when the This option controls wether to split the recording when the
\setting{Split Filesize} is reached or when the \setting{Split Filesize} is reached or when the
\setting{Split Time} has elapsed. \setting{Split Time} has elapsed.
\item[What to do when Splitting:] \item[What to do when Splitting:]
This controls what will happend when the splitting condition is This controls what will happend when the splitting condition is
fullfilled the two available options here are fullfilled the two available options here are
\setting{Start a new file} or \setting{Stop recording}. \setting{Start a new file} or \setting{Stop recording}.
\item[Split Time:] \item[Split Time:]
Set the time to record between each split, if time is used as Set the time to record between each split, if time is used as
\setting{Split Measure}.\\ \setting{Split Measure}.\\
Options (hours:minutes between splits): Off, 00:05, 00:10, 00:15, 00:30, Options (hours:minutes between splits): Off, 00:05, 00:10, 00:15, 00:30,
1:00, 1:14 (74 minute CD), 1:20 (80 minute CD), 2:00, 4:00, 8:00, 10:00, 1:00, 1:14 (74 minute CD), 1:20 (80 minute CD), 2:00, 4:00, 8:00, 10:00,
12:00, 18:00, 24:00. 12:00, 18:00, 24:00.
\item[Split Filesize:] \item[Split Filesize:]
Set the filesize to record between each split, if filesize is used as Set the filesize to record between each split, if filesize is used as
\setting{Split Measure}. \setting{Split Measure}.
\end{description} \end{description}
\section{Prerecord Time} \section{Prerecord Time}
This setting buffers a small amount of audio so that when the record button This setting buffers a small amount of audio so that when the record button
is pressed, the recording will begin from that number of seconds earlier. is pressed, the recording will begin from that number of seconds earlier.
This is useful for ensuring that a recording begins before a cue that is This is useful for ensuring that a recording begins before a cue that is
being waited for. being waited for.
\section{Clear Recording Directory} \section{Clear Recording Directory}
Resets the location where the recorded files are saved to the root of your Resets the location where the recorded files are saved to the root of your
\daps{} drive. \daps{} drive.
\nopt{ondio}{ \nopt{ondio}{
\section{Clipping Light} \section{Clipping Light}
Causes the backlight to flash on when clipping has been detected.\\ Causes the backlight to flash on when clipping has been detected.\\
Options: \setting{Off}, \setting{Main unit only}, Options: \setting{Off}, \setting{Main unit only},
\setting{Main and remote unit}, \setting{Remote unit only}. \setting{Main and remote unit}, \setting{Remote unit only}.
} }
\section{Trigger} \section{Trigger}
\fixme{Add description of triggered recording.} \fixme{Add description of triggered recording.}
\opt{h1xx,h300}{% \opt{h1xx,h300}{%
\section{Automatic Gain Control} \section{Automatic Gain Control}
The \setting{Automatic Gain Control} has five different presets for The \setting{Automatic Gain Control} has five different presets for
automatically controlling the gain while recording. automatically controlling the gain while recording.
\begin{description} \begin{description}
\item[Safety (clip):] \item[Safety (clip):]
This preset will lower the gain when the levels get too high (-1dB) This preset will lower the gain when the levels get too high (-1dB)
and will never increase gain. and will never increase gain.
\item[Live (slow):] \item[Live (slow):]
This preset is designed to be used for recording of live shows and has This preset is designed to be used for recording of live shows and has
quite large headroom for loud parts. It heads for a nominal target peak quite large headroom for loud parts. It heads for a nominal target peak
level of -9dB and will slowly increase or decrease gain to reach it. level of -9dB and will slowly increase or decrease gain to reach it.
\item[DJ-Set (slow):] \item[DJ-Set (slow):]
This preset heads for a nominal target peak level of -5dB and will This preset heads for a nominal target peak level of -5dB and will
slowly increase or decrease gain to reach it. slowly increase or decrease gain to reach it.
\item[Medium:] \item[Medium:]
This preset heads for a nominal target peak level of -6dB and will This preset heads for a nominal target peak level of -6dB and will
increase or decrease gain to reach it. increase or decrease gain to reach it.
\item[Voice (fast):] \item[Voice (fast):]
This preset is designed to be used for voice recording and heads for a This preset is designed to be used for voice recording and heads for a
nominal target peak level of -7dB and will quickly increase or nominal target peak level of -7dB and will quickly increase or
decrease gain to reach it. decrease gain to reach it.
\end{description} \end{description}
\section{AGC clip time} \section{AGC clip time}
This setting controls how long the level is too loud or soft before the This setting controls how long the level is too loud or soft before the
\setting{Automatic Gain Control} kicks in. \setting{Automatic Gain Control} kicks in.
}% }%