Audio Recording

As mentioned above in the Program Layout section, each project window has three distinct components. The first of these, in the upper-left corner of the window, is the Audio View. The Audio View contains the volume meter, basic playback and recording controls, and controls to select the audio source & format. These controls are described in more detail below.

Here is an image of the Audio View:


Basic Audio Controls

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.

Volume Meter

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.

Source & Format

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.