dasay@magnus.acs.ohio-state.edu (Devin N Asay) (05/17/91)
Our office is doing more and more CAI projects that employ digitized audio. We have a good recording studio (with analog-only equipment at our disposal, but have achieved only mediocre results when digitizing the analog recordings or when recording directly to the Mac through the digitizer. We have used both the SoundWave/Impulse and SoundEdit/MacRecorder packages with Mac II's to do our digitizing, and find that, when listening to the audio playback through headphones, there is a consistent, bothersome static noise in the background. (I know, I know, we're using *low end* digitizing equipment.) My question is this: is there any way to filter (either during initial analog recording or during digitizing) the audio signal to eliminate this background noise? Would we be able to filter some of this out by slapping an equalizer into the line between source and digitizer? This is the bottom line: can we get good-quality results with our MacRecorder or similar product? Or will we have to bite the bullet and invest in higher-end equipment (such as Sound Accelerator or Audiomedia)? Or is this an analog-to-digital problem and will our recording studio have to invest in digital recording equipment? Any ideas or experience you can share with us would be most appreciated. Devin N. Asay Asay.1@osu.edu Center for Teaching Excellence Computer-Based Instruction The Ohio State University