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1 | \subsection{Split Editor} | ||
2 | |||
3 | When recording an mp3 file, it is common practice to start the recording | ||
4 | a little bit early and stop it a little bit late to ensure all the | ||
5 | desired sound is recorded. This results in recordings that contain | ||
6 | extra snippets of sound in the beginning and the end. Unfortunately these | ||
7 | snippets can not be deleted easily because they are stored in the same | ||
8 | file as the desired recording. The purpose of the split editor is to | ||
9 | split an mp3 file (the input file) at a point in time (split point). Two | ||
10 | new files can be generated from the input file. The first file contains | ||
11 | the part before the split point and the second file contains the part | ||
12 | after the split point. Once this process has been successful the | ||
13 | original file can be deleted or kept as a backup. % | ||
14 | % | ||
15 | The whole process of splitting an mp3 file consists of three steps: | ||
16 | % | ||
17 | \begin{itemize} | ||
18 | \item Defining the split point | ||
19 | \item Generating the result files | ||
20 | \item If desired deleting the input file (with the browser, not the split editor) | ||
21 | \end{itemize} | ||
22 | |||
23 | \subsubsection{How To Use The Split Editor} | ||
24 | When the device plays the song just hit the \ActionWpsPlay{} button | ||
25 | to pause, when playback has roughly reached the split point. This need | ||
26 | not be very precise as the split point can be fine tuned later. A screen | ||
27 | similar to the one below will appear. | ||
28 | |||
29 | \begin{figure}[H] | ||
30 | \begin{center} | ||
31 | \includegraphics[width=8.0cm]{plugins/images/ss-splitedit-main-112x64x1} | ||
32 | \caption{The Split Editor's Main Screen} | ||
33 | \end{center} | ||
34 | \end{figure} | ||
35 | |||
36 | \subsubsection{The Split Editor's Main Screen} | ||
37 | \begin{description} | ||
38 | \item[The waveform] | ||
39 | displays the volume of the song over time. It will appear as the song | ||
40 | plays and help to visually identify the point in time where the split is | ||
41 | desired | ||
42 | % | ||
43 | \item[The split point indicator] | ||
44 | is a vertical line with a small triangle at the top end. It is the most | ||
45 | important control element of the split editor. It can be moved with the | ||
46 | \ButtonLeft\ and \ButtonRight\ buttons. Later, when you have fine tuned | ||
47 | the split point, the song will be split at this position. | ||
48 | % | ||
49 | \item[The split time] | ||
50 | At the top of the window a time value is displayed. This is the point in | ||
51 | time within the song at which the split point indicator is positioned. | ||
52 | % | ||
53 | \item[The locator] | ||
54 | Another vertical bar represents the position locator. It moves along as | ||
55 | the song plays. In contrast to the split point indicator it has no | ||
56 | triangles at the ends. | ||
57 | % | ||
58 | \item[The time bar] | ||
59 | displays the current position within the song relative to the whole song. | ||
60 | The entire length of the time bar represents the song length. The length | ||
61 | of the solid part of the time bar represents the position and length of | ||
62 | the displayed part of the song. | ||
63 | % | ||
64 | \item[The scale mode] | ||
65 | On the right side of the bottom line the scale mode is displayed. The | ||
66 | waveform can be scaled either logarithmically or linearly. In logarithmic | ||
67 | scale mode the letters ``dB'' are displayed, in linear mode ``\%''. Use | ||
68 | \opt{RECORDER_PAD}{\ButtonFThree} | ||
69 | \opt{ONDIO_PAD}{\ButtonMenu\ + \ButtonRight} | ||
70 | to switch between these modes. Linear mode usually gives better optical | ||
71 | hints with commercially recorded music. For quiet recordings, | ||
72 | especially of human speech, the logarithmic scale often is preferable. | ||
73 | More information in the Scale \reference{ref:Scalemode} below. | ||
74 | % | ||
75 | \item[The loop mode] | ||
76 | In the middle of the bottom line the loop mode icon is displayed. | ||
77 | There are 4 different loop modes. Pressing | ||
78 | \opt{RECORDER_PAD}{\ButtonFTwo} | ||
79 | \opt{ONDIO_PAD}{\ButtonMenu\ + \ButtonUp} | ||
80 | changes to the next loop mode. | ||
81 | % | ||
82 | \begin{description} | ||
83 | \item | ||
84 | \includegraphics[width=0.53cm]{plugins/images/icon-splitedit-loop-1} | ||
85 | Playback loops around the split point indicator. This mode is best | ||
86 | used when searching and zooming for the desired point at which to split | ||
87 | the recording. | ||
88 | \item | ||
89 | \includegraphics[width=0.53cm]{plugins/images/icon-splitedit-loop-2} | ||
90 | Playback loops from the split point indicator to the end of the | ||
91 | visible area. This mode is best used when fine tuning the split | ||
92 | indicator position at the beginning of a recording. | ||
93 | \item | ||
94 | \includegraphics[width=0.53cm]{plugins/images/icon-splitedit-loop-3} | ||
95 | Playback loops from the beginning of the | ||
96 | visible area to the split point. This mode is best used when fine | ||
97 | tuning the split indicator position at the end of a recording. | ||
98 | \item | ||
99 | \includegraphics[width=0.53cm]{plugins/images/icon-splitedit-loop-4} | ||
100 | Playback does not loop, the borders of the visible | ||
101 | area as well as the split point indicator are ignored. This mode is | ||
102 | best used when playing the song outside of the borders of the displayed | ||
103 | region. | ||
104 | \end{description} | ||
105 | \item[Perform the split (8)] | ||
106 | The icon above the | ||
107 | \opt{RECORDER_PAD}{\ButtonFOne} | ||
108 | \opt{ONDIO_PAD}{\ButtonLeft} | ||
109 | button indicates its function to execute the split. When split | ||
110 | positioning is complete open the save dialogue with | ||
111 | \opt{RECORDER_PAD}{\ButtonFOne} | ||
112 | \opt{ONDIO_PAD}{\ButtonMenu\ + \ButtonLeft}. | ||
113 | \end{description} | ||
114 | |||
115 | \begin{table} | ||
116 | \begin{btnmap} | ||
117 | \ButtonOff & Quit plugin \\ | ||
118 | % | ||
119 | \ButtonLeft\ / \ButtonRight & Move the split point indicator \\ | ||
120 | % | ||
121 | \ButtonUp\ / \ButtonDown & Zoom in / out \\ | ||
122 | % | ||
123 | \opt{RECORDER_PAD}{\ButtonPlay} | ||
124 | \opt{ONDIO_PAD}{\ButtonMenu} | ||
125 | & Play from the split position \\ | ||
126 | % | ||
127 | \opt{RECORDER_PAD}{\ButtonFOne} | ||
128 | \opt{ONDIO_PAD}{\ButtonMenu\ + \ButtonLeft} | ||
129 | & Enter the save dialogue \\ | ||
130 | % | ||
131 | \opt{RECORDER_PAD}{\ButtonFTwo} | ||
132 | \opt{ONDIO_PAD}{\ButtonMenu\ + \ButtonUp} | ||
133 | & Toggle loop modes \\ | ||
134 | % | ||
135 | \opt{RECORDER_PAD}{\ButtonFThree} | ||
136 | \opt{ONDIO_PAD}{\ButtonMenu\ + \ButtonRight} | ||
137 | & Toggle logarithmic / linear scaling \\ | ||
138 | \opt{RECORDER_PAD}{ | ||
139 | % | ||
140 | \ButtonOn\ + \ButtonLeft | ||
141 | & Play half speed \\ | ||
142 | % | ||
143 | \ButtonOn\ + \ButtonRight | ||
144 | & Play 150\% speed \\ | ||
145 | % | ||
146 | \ButtonOn\ + \ButtonPlay | ||
147 | & Play normal speed \\ | ||
148 | } | ||
149 | \end{btnmap} | ||
150 | \caption{Controls in the split editor} | ||
151 | \end{table} | ||
152 | |||
153 | \subsubsection{Save dialogue} | ||
154 | In the save dialogue it is possible to specify which of the files you | ||
155 | want to save and their names. When finished, select | ||
156 | ``Save'' and the files will be written to | ||
157 | disk. Note that files can not be overwritten, so filenames that | ||
158 | do not exist yet must be chosen. If unsure whether the | ||
159 | file already exists simply try to save it. If another file with this | ||
160 | name exists the dialogue will return and you can choose another | ||
161 | filename | ||
162 | |||
163 | \screenshot{plugins/images/ss-splitedit-save}{The Split Editor's | ||
164 | Save Dialogue}{} | ||
165 | |||
166 | \begin{table} | ||
167 | \begin{btnmap} | ||
168 | \ButtonUp\ / \ButtonDown & Select item \\ | ||
169 | % | ||
170 | \opt{RECORDER_PAD}{\ButtonPlay} | ||
171 | \opt{ONDIO_PAD}{\ButtonRight} | ||
172 | & Toggle / edit item \\ | ||
173 | % | ||
174 | \ButtonOff & Cancel \\ | ||
175 | \end{btnmap} | ||
176 | \caption{Controls in the save dialogue} | ||
177 | \end{table} | ||
178 | |||
179 | \subsubsection{\label{ref:Scalemode}Scale} | ||
180 | The values in the waveform are scaled according to the settings of the | ||
181 | peak meter. These can be altered in the peak meter settings, | ||
182 | see \reference{ref:Peakmetersetting}. If extreme minimum or | ||
183 | maximum values are set the waveform might be cut off. A minimum | ||
184 | setting of {}-60~dB and a maximum setting of 0~dB are recommended. | ||
185 | These settings should be capable of producing useful waveforms for very | ||
186 | soft sounds in logarithmic mode (dB). When the editor is used on loud | ||
187 | sounds (such as commercial rock or pop music) switching to the linear | ||
188 | scale may prove more effective since the logarithmic scale compresses | ||
189 | loud noises and makes it more difficult to identify characteristic | ||
190 | shapes. Note that it is always possible to toggle between the two scale | ||
191 | modes. | ||
192 | |||
193 | |||