Which type of frequency receives less importance (weight) in the "A" weighting network?

The "A" weighting network is primarily designed to reflect the human ear's response to different frequencies at moderate sound levels. Within this weighting scheme, lower frequencies receive less importance or weighting because the sensitivity of the human ear decreases at these lower ranges. This means that sounds in the lower frequency range (like bass sounds) will not be perceived as loudly as middle and higher frequencies, which are weighted more heavily in the "A" scale. As a result, the "A" weighting network is primarily focused on emphasizing mid to high frequencies, aligning it more closely with how we naturally hear sounds in our environment. This approach allows for a better representation of perceived loudness in noise measurements, making it particularly useful in various applications, including occupational noise assessments and environmental noise monitoring.