A Disturbing Noise is objective and is defined as a scientifically measurable noise level and generally compared to the existing ambient noise level. A Noise Nuisance is a subjective measure and is defined as any noise that disturbs or impairs or may disturb or impair the convenience or peace of any person.
Municipal by-laws govern “Disturbing Noise”. An example of this kind of noise would be loud party music. This kind of
“party” noise is generally tolerated until 21h30; and from Friday to Saturday, until 00h00 before you can take steps
against the perpetrator/s. SAPS / Metro will generally deal with these noise issues if there are complaints from neighbours.
Continuous sounds: are sounds that have little or no variation over a duration of time.
• Varying sounds: are sounds that have differing maximum levels over a duration of time.
• Intermittent sounds: are sounds that are interspersed with quiet periods.
• Impulsive sounds: are sounds that are characterized by relatively high sound levels over a very short duration of time
Refer to Chart A for an extract from the Durban Metropolitan Area (DMA) by-laws regarding typical outdoor noise rating levels. The Durban Metropolitan Area (DMA) has by-laws which are enforced as regulations for noise control. The Durban Metropolitan Area (DMA) by-laws, with reference to The Environment Conservation Act, 1989 (Act No. 73 of 1989), use the following definitions and descriptions: ‘ambient sound level’ means the reading on an integrating impulse sound level 10 meter taken at a measuring point in the absence of any alleged disturbing noise at the end of a total period of at least 10
minutes, after such meter had been put into operation.
Day-time rating level (06h00 – 22h00): 60 dB(A)
Night-time rating level (22h00 – 06h00): 50 dB(A)