The advantages of digital recordings is that the sound can be manipulated computationally, there is no degradation from an original to a copy, and the signal can be sent for long distances over telecommunications links without picking up noise. The sound card in a computer can create sound, process sound from input sources, and send sound to output destinations. If you are recording from a microphone, you may need to check that the mic is selected here. Click on the red recording dot to begin. The best frequency is always a tradeoff between quality and size.
Music is more demanding than voice.
We recommend using at least 22,000 Hz 16 bit for projects in this class. A much greater degree of control and more extensive features for manipulating sound files are available in sophisticated sound applications such as Cool Edit and Sound Forge . The first two features needed are selecting and cropping a sound as you might a photo and saving the sound in a variety of formats commonly supported by multimedia applications and WWW browsers. Mp3 may also be a good option if it is available. Real Player and Mp3 use compression to make file size smaller while maintaining good sound quality.