Here is an image of the Audio View:
The buttons along the top of the Audio View control the recording and playback of audio clips. Three of them (Play, Stop, & Record) are similar to the standard cassette-deck style buttons of the same name.
|Play -||Begins playback of whatever clip is currently selected in the Clip View. If the Clip View is empty or no clips are highlighted, the play button will be disabled.|
|Record -||Begins recording a clip associated with the current segment. Press Stop when finished to keep the recorded audio, or Cancel to throw it away (see Stop and Cancel, below).|
|Stop -||Terminates any active playback or recording. When the user is finished recording a clip, pressing Stop will save that clip to the Clip View.|
|Cancel -||Terminates recording without keeping the results. The user should press Cancel to end recording when he/she knows the results will be unsatisfactory (e.g. if the user misspeaks or there is a sudden burst of background noise).|
The volume unit (VU) meter shows the volume level of the microphone input signal (both while recording and while idle) using two needles. The white needle shows the average signal level, while the red needle shows the peaks. The green interval on the meter represents volumes at which recording should work normally, but as the input volume reaches the red interval some of the signal may be clipped.
For optimal recording the red needle (peak signal) should be in the green area just below the red part of the scale.
The two remaining parts of this window are the Source and Format controls.
In the somewhat rare case that a computer has two or more sound cards, only one will likely be used for recording (since the microphone will only be plugged into one of them). By using the Source dropdown box, the user can specify which sound device to use. The default value in this box will be fine for most systems.
Once a source has been selected, the recording format can be adjusted with the Format dropdown box. Higher sampling frequencies will result in the clips having better sound quality, but at the cost of generating larger WAV files. The default value in this box will favor higher sound quality (higher sampling frequency) over smaller files.