Final answer:
To reduce noise on a unit, you cannot increase speaking volume since it amplifies noise; instead, use active noise reduction via destructive interference or lower amplitude or frequency.
Step-by-step explanation:
To reduce the noise on your unit, one method that you could not use would be to increase the volume at which you are speaking. This would actually amplify the noise rather than reduce it. Techniques to reduce noise involve utilizing the principles of sound interference. For instance, active noise reduction via destructive interference is a method where positive and negative gauge pressures from two different sound sources combine to produce a much smaller pressure, thereby creating a lower-intensity sound. This can result in noise level reductions of up to 30 dB or more. Lowering the amplitude or frequency of the noise are other methods that can help in reducing noise levels.
To achieve destructive interference, a fast electronic analysis of the incoming noise is performed. Afterwards, a second sound wave is introduced with its maxima and minima exactly reversed from those of the incoming noise. When these two sounds meet, they cancel each other out, leading to a reduction in overall noise. However, this can't be accomplished by simply speaking at a lower frequency or volume.
It is also important to be aware of environmental factors that can affect sound perception. For instance, studying during a quiet time without interruptions or distractions can help in maintaining a low noise level, as distractions like television or music can introduce sound interference and increase noise levels.