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How Fast Is The 400 MHz Pentium* II Processor?

How we tested with Sound Forge*

Step 4: Acoustics Modeling (Masonic Center)
This is probably the coolest part. We can make the presenter sound like he's giving the talk in the Masonic Center in Madison, Wisconsin. The people from Sonic Foundry went to this auditorium with a car CD player, microphone, speaker, DAT recorder, and battery. They played a reference sound clip from the CD and recorded it onto the DAT. After they got back to the office, they ran the recorded sound clip through Sound Forge to create this acoustical signature of the auditorium.

Download Sound Clips

Noise Reduced, DC Offset Elimated, Pitch Shifted and Modeled After Masonic Center

First 6 seconds (.mp3) 100KB (36s using 28.8k) 100KB

First 6 seconds (.wav) 1.1MB (7min. using 28.8k) 1.1MB

Full 19 seconds (.mp3) 314KB (2min. using 28.8k) 361KB (2 min. using 28.8k)

Full 19 seconds (.wav) 3.5MB (20min. using 28.8k) 4MB (23 min. using 28.8k)

(Download MP3 player)

Figure 7. Acoustics Modeler makes the clip sound like it's from within the Masonic Center

<--Step 3: Pitch Shifting | Step 5: More Acoustics Modeling-->

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