auedit - graphically record and edit audio files
auedit [-audio servername] [-toolkitoption
...] [filename]
auedit provides an X-based window-oriented interface
allowing the user to record and edit audio files. The editing features
available include:
- o
- Cutting, copying, pasting, and mixing within a single auedit
instance or between multiple auedit instances.
- o
- Changing the amplitude of an interval.
- o
- Reversing an interval.
- o
- Fading in or out an interval.
auedit uses the X Toolkit Intrinsics and the Athena Widget
Set. For more information, see the Athena Widget Set documentation.
auedit starts out with a single window divided into several
areas:
- o
- A collection of drop-down menus and command buttons.
- o
- A volume indicator and control slider.
- o
- The audio file represented as a wave form. If the audio data contains
multiple tracks, the tracks will be displayed in ascending order. For
stereo data, the convention is left track, then right track.
- o
- A set of indicators displaying the interval start, duration, and end and
the current position. These indicators are in units of minutes, seconds,
and hundredths of seconds.
- o
- Buttons to play, stop, and pause the audio.
- o
- Two menus indicating the current file and data formats.
- o
- Two editable fields containing the current frequency and the audio file
comment.
Many functions in auedit operate on a range of audio data
called an interval. The initial interval encompasses all of the audio
data. The interval is indicated within the wave form by two solid, vertical
lines. The left marker indicates the start of the interval. The right marker
indicates the end of the interval. To select an interval of audio data, use
the mouse to move the interval markers in the wave form. Pressing a mouse
button in the wave form will select the marker closest to the mouse
position. That marker may then be dragged to the desired location in the
wave form. Note that the markers may not cross over each other.
To play an interval, click on the Play button (the one with the
triangle on its side). The audio data delimited by the start and end markers
will be played. A dashed vertical line will indicate the approximate
position of the data currently being played. To stop playing, click on the
Stop button (the one containing a solid square). Clicking on Pause (the
button containing two vertical, parallel lines) will pause the playing. To
resume, click on Pause again. The volume slider controls the play volume.
The interval is played at the frequency specified by the Frequency
field. Note that while data is being played, most other functions are
disabled.
- New...
- Initializes auedit with an empty file. You will be prompted for the
number of tracks for the new file.
- Load...
- Loads a file. You will be prompted for the file name.
- Save
- Saves the current file. A backup file will be created by appending a tilde
(~) to the current file name. The file format, data format, frequency and
comment are used when saving the file.
- Save as...
- Saves the current file under a new name. You will be prompted for the file
name. The file format, data format, frequency and comment are used when
saving the file.
- Save interval...
- Saves the interval to a file. You will be prompted for a file name. The
file format, data format, frequency and comment are used when saving the
file.
- Revert
- Discards all changes made since the last save and restores the data to its
state following the last save.
- Exit
- Exits auedit. If there have been changes made to the current file
that have not been saved, you will be asked if you wish to save them.
The cut, copy, and paste commands in the edit menu transfer data
to and from a selection buffer. This buffer is shared between all instances
of auedit. This means that you can cut or copy data from one instance
of auedit and paste it into another instance. The only restriction is
that the audio data in both instances must have the same number of tracks.
When transferring data between instances of differing frequencies, the data
will be converted to the frequency of the destination. This can be used to
change the frequency of the data in a single instance of auedit.
First, cut the data whose frequency you wish to change. Then change the
Frequency field to the desired frequency. Finally, paste the data
back in. The frequency of the data will be converted to the frequency
specified in the Frequency field.
- Cut
- Moves the interval to the selection buffer.
- Copy
- Copies the interval to the selection buffer.
- Paste insert
- Inserts the selection buffer at the point marked by the start marker.
- Paste replace
- Replaces the data at the point marked by the start marker with the data
from the selection buffer.
- Paste mix
- Mixes the data at the point marked by the start marker with the data from
the selection buffer. The mixing function is an average.
- Undo
- Undoes the last operation that modified the audio data. This includes
effects operations in addition to editing operations. If the last
operation was an Undo then the undo is undone, restoring the data
to the state prior to the first undo.
- In
- Zoom in by a factor of two.
- Out
- Zoom out by a factor of two.
- Markers
- Zoom in to the interval delimited by the start and end markers.
- Full
- Zoom out to display all of the audio data.
All operations under the effects menu apply to the current
interval.
- Amplitude...
- Scale the amplitude. You will be prompted for the scale. The scale may be
non-integral.
- Max Amplitude
- Scales the interval to its maximum amplitude without clipping.
- Reverse
- Reverses the order of the data within the interval.
- Fade In
- Linearly scales the interval using a scale ranging from 0.0 to 1.0.
- Fade Out
- Linearly scales the interval using a scale ranging from 1.0 to 0.0.
Clicking on the Record button brings up the record dialog
box. The record dialog box consists of:
- o
- A duration field. This is the maximum duration of the recording in
seconds.
- o
- A frequency field. This is the frequency of the recording in hertz.
- o
- An input mode toggle button. Clicking this button toggles between line
mode and microphone mode.
- o
- A gain slider. This controls the input gain level.
- o
- A record toggle button. Clicking this button starts and stops the
recording.
- o
- A monitor toggle button. Clicking this button toggles the record
monitoring feature that lets you hear what you're recording.
- o
- A dismiss command button. Clicking this button stops any current recording
and dismisses the record dialog box.
The following options may be used with auedit:
- -audio
servername
- This option specifies the Network Audio System server to which
auedit should connect.
There is no way to manipulate individual tracks.
Copyright 1993, 1994 Network Computing Devices, Inc.
Greg Renda, Network Computing Devices, Inc.