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authorMartin Arver <martin.arver@gmail.com>2006-02-21 11:54:53 +0000
committerMartin Arver <martin.arver@gmail.com>2006-02-21 11:54:53 +0000
commitc7fd0fee7ad2581889e84748ab64e10003d9d526 (patch)
treec81cb417787c809732f7126cee8148b3a52881cd /manual/plugins/split_editor.tex
parentbff84266217d10337e5bb4d643c7bfdb9c4b0d5d (diff)
Patch[1430311] by Henrico Witvliet. Split plugins to individual files. Proper naming of the targets.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8763 a1c6a512-1295-4272-9138-f99709370657
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+\subsection{Split Editor}
+When recording an mp3 file, it is common practice to start the recording
+a little bit early and stop it a little bit late to ensure all the
+desired sound is recorded. This results in recordings that contain
+extra snippets of sound and the beginning and end. Unfortunately these
+snippets can not be deleted easily because they are stored in the same
+file as the desired recording. The purpose of the split editor is to
+split a mp3 file (the input file) at a point in time (split point). Two
+new files can be generated from the input file. The first file contains
+the part before the split point and the second file contains the part
+after the split point. Once this process has been successful the
+original file can be deleted or kept as a backup.
+
+The whole process of splitting a mp3 file consists of three steps:
+
+\begin{enumerate}
+\item defining the split point
+\item generating the result files.
+\item if desired delete the input file (with the browser, not the split
+editor)
+\end{enumerate}
+
+\subsubsection{How to use the Split Editor}
+
+\begin{itemize}
+\item \textbf{Pause near the split point}
+When the device plays the song just hit the PAUSE button, when playback
+has roughly reached the split point. This need not be very precise as
+the split point can be fine tuned later.
+\item \textbf{Open the split editor}
+
+Open the plugin. A screen similar to the one below will appear.
+
+{\centering\itshape
+ [Warning: Image ignored] % Unhandled or unsupported graphics:
+%\includegraphics[width=3.701cm,height=2.11cm]{images/rockbox-manual-img67.gif}
+ \newline
+The Split Editor
+\par}
+
+{\centering\upshape
+Here is an explanation of the areas marked in red on the screenshot.
+\par}
+
+\begin{enumerate}
+\item The waveform \newline
+\newline
+The waveform displays the volume of the song over time. It will appear
+as the song plays and help to visually identify the point in time where
+the split is desired
+\item The split point indicator\newline
+\newline
+The split point indicator is a vertical line with a small triangle at
+the top end. It is the most important control element of the split
+editor. It can be moved with the LEFT and RIGHT buttons. Later, when
+you have fine tuned the split point, the song will be split at this
+position.
+\item The split time\newline
+\newline
+At the top of the window a time value is displayed. This is the point in
+time within the song at which the split point indicator is positioned.
+\item The locator\newline
+\newline
+Another vertical bar represents the position locator. It moves along as
+the song plays. In contrast to the split point indicator it has no
+triangles at the ends.
+\item The time bar\newline
+\newline
+The time bar displays the current position within the song relative to
+the whole song. The entire length of the time bar represents the song
+length. The length of the solid part of the time bar represents the position and length
+of the displayed part of the song.
+\item The scale mode\newline
+\newline
+Directly above the F3 button the scale mode is displayed. The waveform
+can be scaled either logarithmically or linearly. In logarithmic scale
+mode the letters ``dB'' are displayed, in linear mode ``\%''. Use F3 to
+switch between these modes. Linear mode usually gives better optical
+hints with commercially recorded music. For quiet recordings,
+especially of human speech, the logarithmic scale often is preferable.
+\item The loop mode \newline
+\newline
+Directly above the F2 button the loop mode icon is displayed. There are
+4 different loop modes. Pressing F2 changes to the next loop mode.
+
+\begin{itemize}
+\item [Warning: Image ignored] % Unhandled or unsupported graphics:
+%\includegraphics[width=0.794cm,height=0.476cm]{images/rockbox-manual-img68.gif}
+ Playback loops around the split point indicator. This mode is best
+used when searching and zooming for the desired point at which to split
+the recording.
+\item [Warning: Image ignored] % Unhandled or unsupported graphics:
+%\includegraphics[width=0.794cm,height=0.476cm]{images/rockbox-manual-img69.gif}
+ Playback loops from the split point indicator to the end of the
+visible area. This mode is best used when fine tuning the split
+indicator position at the beginning of a recording.
+\item [Warning: Image ignored] % Unhandled or unsupported graphics:
+%\includegraphics[width=0.794cm,height=0.476cm]{images/rockbox-manual-img70.gif}
+ Playback loops from the beginning of the
+visible area to the split point. This mode is best used when fine
+tuning the split indicator position at the end of a recording.
+\item [Warning: Image ignored] % Unhandled or unsupported graphics:
+%\includegraphics[width=0.688cm,height=0.476cm]{images/rockbox-manual-img71.gif}
+ Playback doesn't loop, the borders of the visible
+area as well as the split point indicator are ignored. This mode is
+best used when playing the song outside of the borders of the displayed
+region.
+\end{itemize}
+
+\item Perform the split \newline
+\newline
+The icon directly above the F1 button indicates its function to execute
+the split. When split positioning is complete open the save dialogue with F1.
+\end{enumerate}
+
+{\bfseries
+Controls in the split editor }
+\end{itemize}
+
+\begin{tabular}[c]{|p{2.975cm}|p{3.047cm}|p{6.649cm}|}
+\hline
+{\centering\bfseries\itshape
+Recorder
+\par}
+&
+{\centering\bfseries\itshape
+Ondio
+\par}
+&
+{\centering\bfseries\itshape
+Function
+\par}
+\\\hline
+{\centering
+Off
+\par}
+&
+{\centering
+On/Off
+\par}
+&
+Quit plugin
+\\\hline
+{\centering
+Left/Right
+\par}
+&
+{\centering
+Left/Right
+\par}
+&
+Move the split point indicator
+\\\hline
+{\centering
+Up/Down
+\par}
+&
+{\centering
+Up/Down
+\par}
+&
+Zoom in / out
+\\\hline
+{\centering
+Play
+\par}
+&
+{\centering
+Mode
+\par}
+&
+Play from the split position
+\\\hline
+{\centering
+F1
+\par}
+&
+{\centering
+Mode+Left
+\par}
+&
+Enter the save dialogue
+\\\hline
+{\centering
+F2
+\par}
+&
+{\centering
+Mode+Up
+\par}
+&
+Toggle loop modes
+\\\hline
+{\centering
+F3
+\par}
+&
+{\centering
+Mode+Right
+\par}
+&
+Toggle logarithmic / linear scaling
+\\\hline
+{\centering
+On+Left
+\par}
+&
+{\centering
+~
+\par}
+&
+Play half speed
+\\\hline
+{\centering
+On+Right
+\par}
+&
+{\centering
+~
+\par}
+&
+Play 150\% speed
+\\\hline
+{\centering
+On+Play
+\par}
+&
+{\centering
+~
+\par}
+&
+Play normal speed
+\\\hline
+\end{tabular}
+
+\subsubsection{Save the files}
+In the save dialogue it is possible to specify which of the files you
+want to save and their names. When finished, select
+``Save'' and the files will be written to
+disk. Note that files can not be overwritten, so filenames that
+don't exist yet must be chosen. If unsure whether the
+file already exists simply try to save it. If another file with this
+name exists the dialogue will return and you can choose another
+filename
+
+{\centering\itshape
+ [Warning: Image ignored] % Unhandled or unsupported graphics:
+%\includegraphics[width=3.701cm,height=2.11cm]{images/rockbox-manual-img72.gif}
+ \newline
+Save dialogue
+\par}
+
+Controls in the save dialogue
+\begin{tabular}[c]{|p{2.62cm}|p{2.266cm}|p{3.965cm}|}
+\hline
+{\centering\bfseries\itshape
+RECORDER
+\par}
+&
+{\centering\bfseries\itshape
+ONDIO
+\par}
+&
+{\centering\bfseries\itshape
+FUNCTION
+\par}
+\\\hline
+{\centering
+UP/DOWN
+\par}
+&
+{\centering
+UP/DOWN
+\par}
+&
+Select item
+\\\hline
+{\centering
+PLAY
+\par}
+&
+{\centering
+RIGHT
+\par}
+&
+Toggle / edit item
+\\\hline
+\end{tabular}
+
+\subsubsection{Scale}
+The values in the waveform are scaled according to the settings of the
+peak meter. These can be altered in the menu
+\textbf{General Settings {}-{\textgreater} Display{}-{\textgreater} Peak Meter}. If extreme minimum /
+maximum values are set the waveform might be cut off. A minimum
+setting of {}-60 dB and a maximum setting of 0 dB are recommended.
+These settings should be capable of producing useful waveforms for very
+soft sounds in logarithmic mode (dB). When the editor is used on loud
+sounds (such as commercial rock or pop music) switching to the linear
+scale may prove more effective since the logarithmic scale compresses
+loud noises and makes it more difficult to identify characteristic
+shapes. Note that it is always possible to toggle the scale with F3.
+
+