mp3DirectCut
使用者手冊
內容目錄表
快速參考
什麼是 mp3DirectCut?
mp3DirectCut is a frame based editor for MPEG audio. You can set regions for cutting or changing the volume like in common audio editors. At all operations the file will not be re-encoded. This saves time and disk space and prevents loss of audio quality. You can easily navigate through even large files and mp3DirectCut gives you a visualisation of the MP3 audio data.
基本設定
The program needs either an installed MP3 ACM Codec or the 'mpglib.dll' to decode MP3 for playback. The mpglib.dll with the complete source is available at mp3DirectCut's
You can adjust the amount of frames decoded to each play buffer between 'fast' (1) and 'reliable' (8). On slower machines set a higher value. If you want to have a fast response of the graphics select a faster value.
操控
As mp3DirectCut is designed to handle large files, there are many ways to reach a position:
Scrollbar
The arrow buttons move a sinlge frameback or forward,
the page up/down areas skip the file by +/- 100 MPEG frames (2-3 seconds).
You can even use keys to control the scrollbar (Arrow l/r and Page u/d).
But this is only possible with a focused scrollbar.
For quickly focusing it without the mouse press TAB.
[<<<] [<<] [>>] [>>>]
These buttons are user definable.
You can set the amount of frames to skip back/forward
in the configuration window between 10 and 10.000 for
[<<<] and [>>>] and between 1 and 1.000 for [<<] [>>].
Mouse
You can directly jump to any file position by
left clicking into the map area below the audio graph.
And: holding down the CTRL key and clicking into the
audio graph jumps to the shown audio position. Moving
the mouse slowly with button pressed allows smooth scrolling.
[I...<<] [>>...I]
These buttons will set the play cursor
to the selection's beginning or end. If there is no selection
the position will set to the active region (cut, gain, cue).
Edit Menu and [I<] [>I]
Lets you choose the active region and sets the play cursor
to it's beginning.
Some words about visualisation of MP3: the audio graph takes volume information directly from the MP3 frames and differs from the real decoded audio amplitude. Even the height which the frame bars can reach varies by different MP3 types. The graph is for orientation and searching positions only. For a more reliable audio level use the VU meter on the right.
Some words about visualisation of MP2: it's of statistical style and contains limited audio information.
音效編輯
1. To edit a part of your track you must first make or change a Selection using one of these ways:
[
Mouse
You can choose between two selection method in the Settings:
2. With your selection you can set one of three types of regions:
Cuts and Cues
To make a normal cut mark a
selection and press [Cut]. If the selection has a length
of 0 it will become a cue. Cues do not modify the audio,
they can be used to locate positions and must be used
for creating a cue sheet (see under Project files).
While recording a cue can be set by pressing [Set begin].
Cuts do not disappear like in common audio editors. You will see them with a different background color.
Gain regions
The [ Gain ] button opens a dialog which lets you modify
the volume of the selection. 'from .. dB' sets the initial volume
change, 'to .. dB' the final. So the range can be faded in any
direction orconstantly changed. All volume changes are made in
steps of 1.5 dB and nothing will be re-encoded.
Volume regions are shown with the same background color but different color of audio data. Note: Volume change works only with Layer 3.
A gain region can also be created using the Normalize function in the edit menu. It scans the selection for the loudest amplitude and recommends a value to raise the volume to reach the maximum of 0 dB. This value can be adjusted with the slider. Going over 0 dB may cause distortions.
3. Change or remove existing regions
First set it the "active region" (highlighted). The easist way to do so is by using the "Autoselect" option (enabled by default). Alternatively you can highlight the regions as described in the Navigation section. Second press [Edit]. The region will become the selection and will be deleted (!). So after changing boundaries you must hit [Cut] or [Gain] again. Previous gain settings will be kept.
限制
The maximum number of different edit regions is 200.
Cuts and gain regions cannot overlap each others. If you
cut a selection which covers other cuts they will all
be merged (be careful with gains, they will also be
converted!). If you set a new gain which covers other cuts
nothing will be merged but the gain region will be shortened.
試聽和輸出
Normal play ist already a prelisten mode because every cut and every gain modification is played as it will be saved. In addition there are two buttons to prelisten the selection before cutting:
[...=>II=>...] plays some seconds before and some seconds after the selection and then returns to the last cursor position. [I=> ... =>I] plays the beginning and the end of the selection.
A created file can either be the whole data outside the cuts ('Save...') or you can save only the selection ('Save selection...'). You can also save multiple pieces at once: 'Split file...' creates seperate files for every region between cuts or cues. Note: You should ALWAYS CHECK the output file(s) before deleting the original.
For compiling files in any arrangement use 'Append selection...'. Your selection will be appended to the choosen file. But take care not to combine different formats. Type, mpeg version, layer, bitrate, samplerate... must fit. The program will NOT check this.
錄製
For recording an MP3 directly to disk you need either an ACM Codec or the Lame Encoder DLL (available through the homepage of the Lame project: www.sulaco.org/mp3). It is important to choose a base filename. Your recordings will be saved under this name. Note that there will be no query for overwriting existing files! If you select 'Add date & time' each recorded file has date and time in its filename.
To initialize recording press [Rec]. Then you can adjust the audio level using the VU meter. After pressing [Play] the file starts being written. With selected 'Append data' in the recording settings an existing file will not be deleted and you can make multiple recordings to one file. But take care not to use different bitrates or samplerates in one file.
While recording you can set up to 40 cues by pressing [Set begin]. The number and position of the last cue is shown in the range area.
The value of 'Buffer' shows how much data is waiting to be encoded by the codec. If it grows the codec is not fast enough to encode MP3 in realtime. Take care that the used buffer size is not over 10% for more than some seconds.
If you launch mp3DirectCut with '/r' in the command line it will start the recording immediately. You can use this option for automated recording. See more under Command line options.
專案檔與提示表
An mp3DirectCut project file (*.mpd) contains the name of the audio file and all cuts, gain regions and cues. If you work with large files and make a lot of cuts you should frequently save your work to a project file.
Cue Sheets (*.cue) contain only the audio file and cues (cuts with a length of 0). Cuts and gain settings will not be saved. When loadind a Cue sheet the program reads title and artist names and shows them in the graph area. If you split a file using a Cue sheet you can create filenames with titles.
鍵盤快速鍵
Space | Play/Stop |
Page up | Move back defineable large step (<<<) |
Page down | Move forward defineable large step (>>>) |
Arrow left | Move back defineable small step (<<) |
Arrow right | Move forward defineable small step (>>) |
Delete | Cut |
Home | Jump to track beginning |
End | Jump to track end |
Arrow up | Jump to beginning of selection/region |
Arrow down | Jump to end of selection/region |
Ctrl+Left | Jump to previous region (cue/cut/gain) |
Ctrl+Right | Jump to next region (cue/cut/gain) |
Ctrl+P | Enter position field |
Ctrl+S | Enter selection field |
指令列參數
檔案和專案
Every file type known by mp3DirectCut (MP3, MP2, project
files, cue sheets) can be loaded via the command line or
Drag&Drop. If you add mp3DirectCut to these file types
you can open them directly from the Explorer.
自動錄製
'/r' starts the recording immediately. Use this feature for timer
recordings. With Window's scheduler you can also set a duration
time after which the program will be terminated. For multiple
timer recordings be sure to check 'Add date and time' or
'Append data' in the recording settings, otherwise previous
recordings will be overwritten.