cca36069f7
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10731 a1c6a512-1295-4272-9138-f99709370657
175 lines
7.1 KiB
TeX
175 lines
7.1 KiB
TeX
% $Id$ %
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\section{\label{ref:Recording}Recording}
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\subsection{\label{ref:Whilerecordingscreen}While Recording Screen}
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\screenshot{main_menu/images/ss-while-recording-screen}{The while recording
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screen}{}
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Entering the \setting{Recording} option in the \setting{Main Menu} brings up
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a screen in wich you can choose to enter the \setting{Recording Screen} or
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the \setting{Recording Settings} (see below). The \setting{Recording Screen}
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shows the time elapsed and the size of the file being recorded. A peak meter
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is present to allow you set Gain correctly. There is also a volume setting,
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this will only affect the output level of the \dap{} and does \emph{not}
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affect the recorded sound.
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\note{When you start a recording, the hard disk will spin up. This will cause
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the peak meters to freeze in the process. This is expected behaviour, and
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nothing to worry about. Recording is continiued during the spin up.}
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\opt{MASCODEC}{The frequency, channels and quality}
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\opt{SWCODEC}{The frequency and channels} settings are shown on the last line.
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The controls for this screen are:
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\begin{table}
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\begin{btnmap}{}{}
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\ButtonUp\ / \ButtonDown & Select setting.\\
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%
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\ButtonLeft\ / \ButtonRight & Adjust selected setting.\\
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%
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\opt{RECORDER_PAD,IAUDIO_X5_PAD}{\ButtonPlay}
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\opt{ONDIO_PAD}{\ButtonMenu}
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\opt{IRIVER_H100_PAD,IRIVER_H300_PAD}{\ButtonOn}
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\opt{IPOD_4G_PAD,IPOD_3G_PAD}{\fixme{FixMe}}
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& Start recording.\\
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& While recording: pause recording (press again to continue).\\
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%
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\opt{RECORDER_PAD,ONDIO_PAD,IRIVER_H100_PAD,IRIVER_H300_PAD}{\ButtonOff}
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\opt{IAUDIO_X5_PAD}{Hold \ButtonPlay}
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\opt{IPOD_4G_PAD,IPOD_3G_PAD}{\fixme{FixMe}}
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& Exit \setting{Recording Screen}.\\
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& While recording: Stop recording.\\
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%
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\opt{IRIVER_H100_PAD,IRIVER_H300_PAD,IAUDIO_X5_PAD}{
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\ButtonRec & Starts recording.\\
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& While recording: close the current file and open a new one.\\
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}
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%
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\opt{RECORDER_PAD}{\ButtonFOne}
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\opt{ONDIO_PAD}{Hold \ButtonMenu}
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\opt{IRIVER_H100_PAD,IRIVER_H300_PAD}{\ButtonMode}
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\opt{IAUDIO_X5_PAD}{Hold \ButtonRec}
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\opt{IPOD_4G_PAD,IPOD_3G_PAD}{Hold \ButtonSelect}
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& Open \setting{Recording Settings} (see below).\\
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%
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\opt{RECORDER_PAD}{
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\ButtonFTwo & Quick menu for recording settings. A quick press will
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leave the screen up (press \ButtonFTwo\ again to exit), while holding
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it will close the screen when you release it.\\
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}
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%
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\opt{RECORDER_PAD}{
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\ButtonFThree & Quick menu for source setting.\\
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& Quick/hold works as for \ButtonFTwo.\\
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& While recording: Start a new recording file.\\
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}
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\end{btnmap}
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\end{table}
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\subsection{\label{ref:Recordingsettings}Recording Settings}
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\screenshot{main_menu/images/ss-recording-settings}{The recording settings screen}{}
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\opt{MASCODEC}{
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\begin{description}
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\item[Quality:]
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Choose the quality here (0 to 7). Default is 5, best quality is 7,
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smallest file size is 0. This setting effects how much your sound
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sample will be compressed. Higher quality settings result in larger
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MP3 files.
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The quality setting is just a way of selecting an average bit rate,
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or number of bits per second, for a recording. When this setting
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is lowered, recordings are compressed more (meaning worse sound quality),
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and the average bitrate changes as follows.
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\end{description}
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\begin{table}[h!]
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\begin{center}
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\begin{tabularx}{0.75\textwidth}{lX}\toprule
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\emph{Frequency} & \emph{Bitrate} (Kbit/s) -- quality 0$\rightarrow$7 \\\midrule
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44100Hz stereo & 75, 80, 90, 100, 120, 140, 160, 170 \\
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22050Hz stereo & 39, 41, 45, 50, 60, 80, 110, 130 \\
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44100Hz mono & 65, 68, 73, 80, 90, 105, 125, 140 \\
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22050Hz mono & 35, 38, 40, 45, 50, 60, 75, 90 \\\bottomrule
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\end{tabularx}
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\end{center}
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\end{table}
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}
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\begin{description}
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\opt{MASCODEC,x5}{
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\item[Frequency:]
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Choose the recording frequency (sample rate) -- 48kHz, 44.1kHz, 32kHz and
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24kHz, 22.05kHz, 16kHz are available. Higher sample rates use up more disk
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space, but give better sound quality.
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This setting determines which frequency range can accurately be reproduced
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during playback, Lower frequencies produce smaller files.
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\opt{MASCODEC}{
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The frequency setting also determines which version of the MPEG standard
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the sound is recorded using:\\
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MPEG v1 for 48, 44.1 and 32\\
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MPEG v2 for 24, 22.05 and 16\\
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}
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}
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\item[Source:]
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Choose the source of the recording. This can be
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\opt{recorder,recorderv2fm,h1xx}{SPDIF (digital),} microphone or line in.
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\opt{CONFIG_TUNER}{For recording from the radio see \reference{ref:FMradio}.}
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% Add h1xx here whenever it supports setting recording frequency.
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\opt{recorder,recorderv2fm}
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{\note{You cannot change the sample rate for digital recordings.}}
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\opt{MASCODEC,x5}{
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\item[Channels:]
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This allows you to select mono or stereo recording. Please note that
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for mono recording, only the left channel is recorded. Mono recordings
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are usually somewhat smaller than stereo.
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}
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\opt{MASCODEC}{
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\item[Independent Frames:]
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The independent frames option tells the \dap\ to encode with the bit
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reservoir disabled, so the frames are independent of each other. This
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makes a file easier to edit.
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}
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\item[File Split:]
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This option is useful when timing recordings. If set to active it stops
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a recording at a given interval and then starts recording again with a
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new file, which is useful for long term recordings.
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\newline
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The splits are seamless (frame accurate), no audio is lost at the split
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point. The break between recordings is only the time required to stop
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and restart the recording, on the order of 2 -- 4 seconds.
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\newline
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Options (hours:minutes between splits): off, 24:00, 18:00, 12:00, 10:00,
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8:00, 6:00, 4:00, 2:00, 1:20 (80 minute CD), 1:14 (74 minute CD), 1:00,
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00:30, 00:15, 00:10, 00:05.
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\item[Prerecord Time:]
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This setting buffers a small amount of audio so that when the record button
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is pressed, the recording will begin from that number of seconds earlier.
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This is useful for ensuring that a recording begins before a cue that is
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being waited for.\\
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Options: \setting{Off}, \setting{1 -- 30 seconds}
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\item[Directory:]
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Allows changing the location where the recorded files are saved. The
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default location is \fname{/recordings}.
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\item[Show recording screen on startup:]
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If set to yes, the \dap\ will start up with the while recording screen
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showing.\\
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Options: \setting{Yes}, \setting{No}
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\item[Clipping Light:]
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Causes the backlight to flash on when clipping has been detected.\\
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Options: \setting{Off}, \setting{Remote unit only},
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\setting{Main and remote unit}, \setting{Main unit only}.
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\opt{MASCODEC}{
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\item[Trigger:]
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\fixme{Add description of triggered recording.}
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}
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\end{description}
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