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Essay Details:
Essay text:
Below 1000 Hz the frequency was cut in half. (500, 250) We were asked to note the clarity of the signal at each cut off and the changes that occurred. Two words were presented at each level and we were asked to evaluate clarity. The frequency cut off was then added.
Results
10,000 Hz - clear 4000 Hz - clear
9000 Hz - clear 3000 Hz - a little low
8000 Hz- clear 2000 Hz - unclear articulation
7000 Hz - clear 1000 Hz - not clear, sounds mumbled
6000 Hz - clear 500 Hz - sounds muffled
5000 Hz - clear 250 Hz - unintelligible English
Conclusions
The results of the experiment led to the following conclusions:
1) 500,1000 and 2000 Hz are the frequencies needed to really understand speech
2) Consonants were not heard at 1000 Hz because of hearing loss in high frequency
3) Vowels carry the power of the message and syllabic information
4) The difference was heard at the frequency level of 2000 Hz and below...
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