WaveSurfer Guide for L541
Part 3: Sound Edit
1 | 2 | 3
| 4 | 5 | 6
| 7 | 8 | 9
Open and listen to a sound file.
- Download snd4ws01.wav to the L541Lab folder. [snd4ws01.wav
- From the WaveSurfer Menu Bar, select File,
then Open snd4ws01.wav.
- From the list that appears in a separate window, select Waveform
configuration . Then Click OK.
- Listen to whole sound.
- Select a waveform portion for a word "play" in this sound. Use
zoom function and replay function.
Need to review Guide part 2: Basic audio control?
- Select a waveform portion for a word "speaker" in the same sound.
- Find the [s] in the word "speaker". Select and play it.
- Select the rest of the word "speaker" (without the [s]). Does
the first sound sound like the initial sound in " play"?
Add a spectrogram pane
- Right-click on a waveform pane.
- Select Create Pane to Spectrogram and
Save the selection as a new file
- Select the waveform for "speaker".
- Go Edit and select Zero Cross Adjust.
- Go File and select Save selection. Save
to the L541Lab folder. Name the file as "snd4lab01_XXN.wav" (Replace
XX with your initial and N with your session number).
Inserting silence in the sound.
- Open "snd4lab01.wav" with Waveform configuration.
- Add a spectrogram pane. Does the left edge of spectrogram show any information?
- Move cursor to the very beginning of the sound. Be careful not to select
- From Transform, select Silence. You'll
see a new window:
If you don't see this window, undo the job and try again. Make sure you are
not selecting any parts.
- In the box, type 0.050 and click OK.
- Do the same thing at the end of the sound. Save the file.
- Did you notice a difference in spectrogram?
Reverse the sound (Play backward)
- Let's use the snd4ws01.wav again.
- Open the file with Spectrogram configuration. Add a Waveform pane.
- Select a portion for a word 'playback'.
- From Menu, select Transform to Reverse
- Play selection.
- With the same selection, select Transform to Reverse
to cancel out the change.
- Click anywhere in WaveSurfer window. Hit Alt + PrintScreen.
- From Windows Start menu, choose Run. Type
mspaint and click OK.
- From the Menu in Microsoft Paint, select Edit to
Paste (or Ctrl+ v).
- Now you can save the image as bitmap file or jpeg file.
Prepared by Kyoko Nagao
Last updated on Jan 21, 2004