From another sound study I read several years ago, the architecture of the south end of Beaver leads to effect of an amphitheater which sound is effectly directly & distributed to the field and not lost in a wider area of distribution. These sound studies are the primary reason the students were concentrated in the end zone and limited to the first section on either side of the end zone.
Link
:http://acoustics.org/pressroom/httpdocs/159th/barnard.htm
.We showed in a previous study that the crowd noise increased from about 75-80 dB when the home team quarterback was calling plays to 100-110 dB when the visiting team was trying to call plays.
Thats like the difference between a normal radio playing and the speakers at a rock concert.In terms of effective communications distance, the home teams quarterback can communicate with other players up to 20 feet away while shouting; whereas, the visiting teams quarterback is limited to communications ranges of less than 2 feet, even while shouting.
Figure 5 shows the three cases for the model. Comparison of Case #1 and Case #2 showed that there was no difference in the on-field sound levels between the cases meaning that the upper section of students is not contributing significant noise to the field
. Case #3 was an attempt to improve the ability of the student section to project noise onto the field by surrounding the endzone with students. Results from Case #3 showed a 1 dB drop in noise levels on the east side of the field, but a 1 dB and 3 dB increase in noise levels at the center and west sides of the field, respectively.According to this model, by rearranging the student section around the endzone crowd noise would be more evenly distributed over the south end of the field.
Hardware setup for the HEAD Visor tests. Sound level meter on the 13-yard line and sound source at one location (left) and the HEAD Visor system set up on the sidelines (right).
Figure 5. Schematic of the 3 cases that were run of the noise model for the south end zone. Green circles represent the receiver locations at the 13 yard line. Note that south is up in this schematic. Case #1 has 38,176 spectators (21,205 students, 16,971 other fans), Case #2 has 26,622 spectators (15,428 students, 11,194 other fans), and Case #3 has 38,176 spectators (21,170 students, 17,006 other fans).