I think that one also needs to understand the various parameters instead of just banning- 1. Decibel levels - Upto 75 decibels is what is pleasing to human ears - Upto 135 decibels is what is acceptable to the human ears By the night, all loudspeakers can perform, provided they are playing below 75 decibel level. This requires not loud speakers, but good quality music speakers. ( http://www.noisehelp.com/noise-level-chart.html ) 2. Frequency of sound - For an adult, the frequency between 10 hz and 10 khz is what is audible, whereas for children 20hz to 20khz is audible. Anything below or above this will amount to noise or unperceived vibrations which can be harmful. 3. Quality of the music - Pleasant music comes from soothing bhajans, kirtans, carols, ghazals, sufi songs, light classical music, etc. - Unpleasant music comes from loud disco numbers in the name of jagrans that is practised in some parts of India (most parts of India do not practise it) (instead bhajan, kirtan should be tried), loud calls for azaan which are more of noise than musical quality (they could have tried ghazal or sufi music instead), rock band belching out noise, bomb blasts, siren, etc. 4. Social acceptability - Based on the geo-political situation and geographic location , the human ear perceives sounds in a different manner. For example in a cold weather, one may prefer to hear "hot music". Whereas in a hot summer, one needs to "cool off" with cool music. The requirement of switching off the loudspeakers are more based on only the decibel levels. Whereas a genuine sound management system will take care of most of the above parameters. The way of controlling should be as below- 1. Have instruments to check all the parameters and link them with the audio control mechanism. In future the companies which provide the speakers and the audio systems, should come with such auto control mechanisms which automatically control the music systems, based on these parameters.
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