Use the Microsoft Sound Recorder or similar
tool to record 4 different sounds (at least one of each: noises, music,
speech) and save them in 4 different formats (e.g. high/low sampling rate,
8bits/16bits per sample, mp3, RealAudio, PCM, etc.). Not every sound needs to be
saved in every format, but you should be able to contrast at least 2 formats for
each sound, where one of the two contrasted formats should be no better than
8khz, 8bit sampling.
Try editing some sounds together, creating 3
effects such as echo, reverse or speedup.
If you want better than a B grade on this
assignment, download a free sound editor from http://www.goldwave.com and try some of the editing there.
Cool Edit from www.syntrillium.com/cooledit is another alternative sound editor you could use. Feel
free to use any other sound editing tool that you may know about.
On your URL, describe what Goldwave/Cool Edit
lets you do beyond the MS Sound Recorder and illustrate with 3 or more effect
examples.
1) Do you notice
degradation in different formats or sampling rates?
2) What are the size
requirements for one second of audio in each of your saved formats?
3) Did you use lossy
compression? What were the effects of lossy compression, if any? How much space
was saved?
4) If you used another
sound editor, describe what you could do beyond the basic MS Sound Recorder
function.