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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272  % $Id:$ % \screenshot{main_menu/images/ss-recording-settings}{The recording settings screen}{} \note{To change the location where recordings are stored open the \setting{Context Menu} (see \reference{ref:Contextmenu}) on the directory where you want to store them in the \setting{File Browser} and select \setting{Set As Recording Directory}.} \opt{masf}{ \section{Quality} 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 sample will be compressed. Higher quality settings result in larger MP3 files. 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 is lowered, recordings are compressed more (meaning worse sound quality), and the average bitrate changes as follows. \begin{table}[h!] \begin{rbtabular}{0.75\textwidth}{lX}% {\emph{Frequency} & \emph{Bitrate} (Kbit/s) -- quality 0$\rightarrow$7}{}{} 44100~Hz stereo & 75, 80, 90, 100, 120, 140, 160, 170 \\ 22050~Hz stereo & 39, 41, 45, 50, 60, 80, 110, 130 \\ 44100~Hz mono & 65, 68, 73, 80, 90, 105, 125, 140 \\ 22050~Hz mono & 35, 38, 40, 45, 50, 60, 75, 90 \\ \end{rbtabular} \end{table} } \opt{swcodec}{ \section{Format} Choose which format to save your recording in. The available choices are the two uncompressed formats \setting{PCM Wave} and \setting{AIFF}, the losslessly compressed \setting{WavPack} and the lossy \setting{MPEG Layer 3}. \section{Encoder Settings} This sets the bitrate when using the \setting{MPEG Layer 3} format. And has no settings for the other formats. } \section{Frequency} \nopt{sansa}{ Choose the recording frequency (sample rate). \opt{masf}{48~kHz, 44.1~kHz, 32~kHz, 24~kHz, 22.05~kHz, 16~kHz} \opt{h100,h300}{44.1~kHz, 22.05~kHz and 11.025~kHz} \opt{x5}{88.2~kHz, 44.1~kHz, 22.05~kHz and 11.025~kHz} \opt{sansaAMS}{96~kHz, 88.2~kHz, 64~kHz, 48~kHz, 44.1~kHz, 32~kHz, 24~kHz, % 22.05~kHz, 16~kHz, 12~kHz, 11.025~kHz and 8~kHz} \opt{gigabeats}{48~kHz, 44.1~kHz, 32~kHz, 24~kHz, 22.05~kHz, 16~kHz, 12~kHz, % 11.025~kHz and 8~kHz} are available. Higher sample rates use up more disk space, but give better sound quality. \opt{swcodec}{\note{The 11.025~kHz setting is not available when using % \setting{MPEG Layer 3} format.} }% \opt{masf}{ The frequency setting also determines which version of the MPEG standard the sound is recorded using:\\ MPEG v1 for 48~kHz, 44.1~kHz and 32~kHz.\\ MPEG v2 for 24~kHz, 22.05~kHz and 16~kHz.\\ } \opt{recorder,recorderv2fm,h100} {\note{You cannot change the sample rate for digital recordings.} } } % nopt sansa \opt{sansa}{ Recordings can only be made at a 22.05~kHz frequency (sample rate) on this \dap. } % opt sansa \section{Source} Choose the source of the recording. The options are: \opt{recorder,recorderv2fm,h100}{\setting{SPDIF (digital)}, }% \nopt{ipodnano,ipodvideo}{\setting{Mic}\nopt{radio} {\nopt{recorder,m5,ipod4g,ipodcolor}{,} and }}% \nopt{sansa,sansaAMS}{\nopt{ipodnano,ipodvideo,recorder,m5,ipod4g,ipodcolor}% {, }\setting{Line In}}% \nopt{radio}{.} \opt{radio}{and {\setting{FM Radio}}. For more information on recording from the radio see \reference{ref:FMradio}.} \section{Channels} This allows you to select mono or stereo recording. Please note that for mono recording, only the left channel is recorded. Mono recordings are usually somewhat smaller than stereo. \opt{swcodec}{ \section{Mono Mode} When configured to record to mono and the source is a stereo signal, use this setting to configure how the mono signal is created. Options are L, R and L+R. } \opt{masf}{ \section{Independent Frames} The independent frames option tells the \dap{} to encode with the bit reservoir disabled, so the frames are independent of each other. This makes a file easier to edit. } \section{File Split Options} 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 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 2 -- 4 seconds. \begin{description} \item[Split Measure.] This option controls wether to split the recording when the \setting{Split Filesize} is reached or when the \setting{Split Time} has elapsed. \item[What to do when Splitting.] This controls what will happend when the splitting condition is fullfilled the two available options here are \setting{Start a new file} or \setting{Stop recording}. \item[Split Time.] Set the time to record between each split, if time is used as \setting{Split Measure}.\\ 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, 12:00, 18:00, 24:00. \item[Split Filesize.] Set the filesize to record between each split, if filesize is used as \setting{Split Measure}. \end{description} \section{Prerecord Time} 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. This is useful for ensuring that a recording begins before a cue that is being waited for. \section{Clear Recording Directory} Resets the location where the recorded files are saved to the root of your \daps{} drive. \nopt{ondio}{ \section{Clipping Light} Causes the backlight to flash on when clipping has been detected.\\ Options: \setting{Off}, \setting{Main unit only}, \setting{Main and remote unit}, \setting{Remote unit only}. } \section{Trigger} When you record a source you often are only interested in the sound and not the silence in between. The recording trigger provides you with a tool to automatically distinguish between sound and silence and record the sound only. Unfortunately it is not very easy to make this distinction between silence and sound because you hardly ever encounter real silence. There always are background noises. What is considered as background noise depends on the situation. For example during a lecture the very low noise of rustling paper might be considered as background noise. During a rock concert the murmur of the audience might be concidered background noise which is much louder compared to rustling paper. Also the duration of the signal matters. When you record speech you want to record every syllable. When you record live music you may not be interested in that chord the guitarist strokes for two minutes before the show to verify his amp is turned on. The trigger features numerous parameters to adapt its behaviour to the desired situation. \begin{description} \item[Trigger.] This parameter specifies the trigger mode. When set to \setting{Off} the recording must be started manually and apart from the Prerecord time no other parameter has any effect. \setting{Once} will have the trigger start one recording only; after the recording has finished the input signal will not start another recording. \setting{Repeat} will have the trigger start multiple recordings. \item[Trigtype.] \fixme{Add description of Trigtype} Options: \setting{Stop}, \setting{Pause}, \setting{New File}. \item[Prerecord Time.] This specifies the time that is included into the recording before the trigger event occurs. This is very useful if you record a signal that fades in. Usually you want to set the prerecord time greater than or equal to the start duration. That ensures that you record the entire sound. Strictly speaking the prerecord time is not a special parameter of the trigger. It is available during normal recordings too. \item[Start Above.] The start threshold defines the minimal volume a sound must have to start the recording. It is displayed numerically in the line "Start Above". Note that the unit of the threshold depends on the settings of the peak meter. (i.e. When the peak meter displays db you can adjust the level in db and when the peak meter is set to linear the threshold is displayed as percentage.) In the peak meter at the bottom of the screen the start threshold is displayed graphically by a little triangle pointing to the right. There are two special values. The value \setting{Off} turns the start condition off. With this setting you have to start the recording manually and the trigger only stops the recording according to the stop condition. The setting \setting{-inf} sets the trigger to the absolute minimum. This setting only makes sense when you record via a digital input as even the noise of the device itself would exceed this threshold immediately. \item[for at least.] The start duration defines the minimal duration that a signal must exceed the start threshold to start the recording. Depending on your situation you may want to set this setting to 0 (e.g. when copying a song from a commercial medium) or to quite big values. Because sound is not continuous by nature (think of percussion) neglectable dropouts are tolerated during this start duration. \item[Stop Below.] When the sound level drops below the stop threshold the recording is stopped. It is displayed numerically in the line "Stop Below". Just like the start threshold the unit of the stop threshold depends on the settings of the peak meter. There's also a small triangular marker in the peak meter at the bottom of the screen. In contrast to the start threshold marker it points to the left. The value \setting{Off} turns the stop condition off. With this setting you have to stop the recording manually. \item[for at least.] This time specifies the duration the signal must drop below the stop threshold to stop the recording. By selecting high values you can ensure that, for example, trailing fade-outs are recorded entirely. \item[Presplit Gap.] When the signal drops below the stop threshold for the time specified by the presplit gap a new recording may be started when the signal raises above the start threshold. Thus the value of the presplit gap should be smaller than the stop hold time. Otherwise the recording would stop anyway and the presplit gap has no effect. For most uses I recommend to set this parameter equal to the stop hold time. Sometimes you may encounter a sound source (e.g. a CD) where the songs have fade outs and hardly any gaps between the tracks. Here you can set the stop hold time to long values to ensure that all fade outs are recorded completely. By specifying a short presplit gap you still can split the recording into seperate tracks whenever the trigger start condition is met. \end{description} More information can be found at \wikilink{VolumeTriggeredRecording}. \opt{h100,h300}{% \section{Automatic Gain Control} The \setting{Automatic Gain Control} has five different presets for automatically controlling the gain while recording. \begin{description} \item[Safety (clip).] This preset will lower the gain when the levels get too high (-1~dB) and will never increase gain. \item[Live (slow).] 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 level of -9~dB and will slowly increase or decrease gain to reach it. \item[DJ-Set (slow).] This preset heads for a nominal target peak level of -5~dB and will slowly increase or decrease gain to reach it. \item[Medium.] This preset heads for a nominal target peak level of -6~dB and will increase or decrease gain to reach it. \item[Voice (fast).] This preset is designed to be used for voice recording and heads for a nominal target peak level of -7~dB and will quickly increase or decrease gain to reach it. \end{description} \section{AGC clip time} This setting controls how long the level is too loud or soft before the \setting{Automatic Gain Control} kicks in. }%