This information is for people who own, operate or manage:
- entertainment venues
- outdoor entertainment events.
The information relates to assessing music emissions from your venue or event. It will help you understand what an alternative assessment location is, and when you can use one.
These guidelines are in accordance with the Noise protocol. They should be read alongside the Entertainment venue and outdoor event music noise guidelines (the guidelines).
If you own, operate, or manage an entertainment venue (venue), or an outdoor entertainment event (event); you are responsible for:
- managing risks of harm from your music emissions
- ensuring your music noise doesn’t exceed noise limits.
Noise limits are the maximum effective noise level (e.g. decibel value) music noise must not exceed in a noise sensitive area. See the guidelines section 4.1 for information on indoor venue noise limits and section 5.1 for outdoor venue and event noise limits. It is important to note, noise limits are not intended to be levels a person can ‘pollute up to’. They must not be interpreted as levels below which no action is needed.
A noise sensitive area refers to a location where people are expected to be most at risk of being impacted by noise. See regulation 4 of the Environment Protection Regulations 2021 (the Regulations) for the definition including the list of locations.
What is an alternative assessment location
When taking noise measurements to determine noise limits, or assess your compliance with noise limits:
- you must do this in accordance with the methods set out in the Noise protocol.
- you must find your measurement point, where you set up your microphone to measure the effective noise level or background level, as determined by the noise protocol. You may have more than one measurement point.
The Noise protocol prioritises locating your measurement point(s):
- within a noise sensitive area
- where they represent the greatest intrusion of music noise
- For indoor venues, the greatest intrusion of music noise is the highest emergence of music noise over the background level. For example, outside the bedroom window of a home near your venue, where your music noise is loudest.
- For outdoor venues, this is when the highest music noise levels occur during your operating hours.
Despite this priority, there are situations when this is not suitable. When this is the case, the Noise protocol allows the use of an alternative assessment location (AAL).
An AAL is a point where you take noise measurements, that is either:
- not located within a noise sensitive area
- is located within a noise sensitive area, but not at the point that represents the greatest intrusion of music noise.
Whether your AAL is within a noise sensitive area or not, the noise heard at your AAL must still represent what is heard at the noise sensitive area.
When and how you use AALs, must be in accordance with the Noise protocol. You must be able to justify why an AAL was used.
Alternative assessment criterion
If you use an AAL, you must also set an associated alternative assessment criterion (AAC). An AAC is the maximum effective noise level (e.g. decibel value) your music noise must not exceed when measured at the AAL. An AAC is calculated to ensure your music noise is within noise limits when it reaches a noise sensitive area.Calculating an ACC can be complex and requires:
- the use of recognised sound modelling systems
- detailed understanding of how sound will spread and travel from point A to point B
- detailed understanding of the factors influencing how sound travels e.g. physical structures that may reflect or absorb noise and surrounding environment.
You must calculate a separate AAC for:
- each different AAL
- all noise limits that apply during your hours of operation, i.e. the day/evening period limit and the night period limit.
When you must use an alternative assessment location
The Noise protocol states when an AAL must be used. It must be used where it is not possible to measure the noise at a measurement point that represents the greatest noise intrusion within the noise sensitive area.
This applies to all venues and events and could include when:
- access is not permitted
- the location is not accessible.
Refer to Case study 1.
Conditions when you may use an alternative assessment location
The Noise protocol also defines when you may use an AAL.Venues and events:
- If music from other venues or events combines with your music and contributes to the effective noise level at the noise sensitive area:
- The combined music noise from venues and events should be within noise limits at the noise sensitive area.
- Each venue or event operator contributing to the music noise may need to use an AAL closer to their site. This can allow each operator to measure their individual contribution.
Refer to Case study 2.
- When a more suitable measurement point is required to facilitate the assessment of the noise. This could be:
- if another source of noise is impacting noise measurements (excluding other sources of music noise). For example, a continuous barking dog or people talking.
- if the location within the noise sensitive area is not readily accessible.
Refer to Case study 3.
Indoor venues only:
If atmospheric conditions influence what is heard at the noise sensitive area. This can happen when:- there are changes in the atmosphere, like wind, cloud cover, air pressure, and temperature, affecting how sound travels
- the further sound travels, the more influence these conditions can have
- if you take measurements at a noise sensitive area far from your venue. It might not represent the noise under different conditions. This could include if your noise sensitive area is located over 300m away from your indoor venue.
Refer to Case study 4.
EPA has produced a Technical guide: Measuring and analysing industry noise and music noise. This guide can help you understand the Noise protocol and how to measure and analyse music noise.
To conduct music noise measurements, you will need to:
- use a suitable sound level meter calibrated by a NATA-accredited laboratory. Beware of smartphones or off the shelf sound meters as they would not provide the required accuracy for a suitable measurement
- understand the accuracy of the sound level meter you use, so you factor in the relevant margin of uncertainty to your results.
Music noise assessments are technical. You need access to suitable equipment. Using AALs requires additional resources (see alternative assessment criterion). It is recommended you engage an acoustic consultant to help you with music noise assessments.
Engaging an acoustic consultant
Acoustic consultants, or people with suitable experience in assessing music emissions, can help. They can:- identify noise sensitive areas
- determine noise limits and assess compliance with the Environment Protection Act 2017 (the Act) and the Regulations
- identify whether the use of AALs are appropriate
- identify AALs and calculate AACs for your AALs
- make recommendations to be compliant. For example, configuring sound equipment, noise attenuation and administrative actions
- provide advice on how you can conduct ongoing monitoring using AALs
- provide advice on sound monitoring equipment.
Ways you can find a consultant include:
- word of mouth –contact individuals or businesses you know have engaged a consultant
- online search – searching acoustic or noise consultants will give many results. You’ll need to check their credentials and experience with assessing music noise
- expressions of interest – open tenders for an acoustic consultant in a major newspaper. Make sure you assess the quotes received against the scope of the work
- professional associations - they can often provide members’ contact details. For example, the Australian Acoustical Society.
Proactive noise measurements
To determine noise limits and assess compliance with these limits, you must follow the Noise protocol. However, you can measure your music at any time and location as a proactive step towards understanding your emissions.To make these measurements as indicative as possible for assessing potential risks of harm from your music, refer to the tips below:
- follow the Noise protocol to determine the noise limits that apply during your operating hours
- if you measure music outside your venue, do this when and where your music noise is loudest:
- if the measurement is lower than the relevant noise limit, this is a good sign your venue will likely be compliant with the noise limits
- if the measurement is higher than the relevant noise limit, this may show you need to reduce your music emissions. You may need to conduct a noise assessment
- note where noise sensitive areas are located for your venue
- consider the path that your music will travel. Measure your music where it will best represent the impact on noise sensitive areas
- consider surfaces that can absorb and reflect sound. These might skew your measurements i.e. take measurements away from walls and hold microphones away from the body
- make a record of all your measurements noting the days, times and type of music being played.
You might only have access to your noise sensitive areas for a short period of time. This might allow for an initial assessment to set noise limits and assess compliance, but not for ongoing monitoring.
In this case, you may be able to identify other locations for ongoing monitoring. A simple method that can give an indication of whether you are close to, or above the noise limits, could include the following steps:
- follow the Noise protocol to determine the noise limits that apply during your operating times
- review the Technical Guide to help you identify locations for ongoing monitoring. Make sure you can access them during your different operating times
- during the times each noise limit applies, change (increase and decrease) the music volumes at your venue or event. While doing this, take music noise measurements within your noise sensitive areas. At the same time, take music noise measurements at your ongoing monitoring locations
- change the music volumes until your music noise is within the noise limits at your noise sensitive areas. Then record the corresponding measurements (levels) at your ongoing monitoring locations. Use these levels for your ongoing monitoring
- monitor your music emissions at your ongoing monitoring locations. While monitoring, if your music levels are measured to be close to the levels you recorded, it may mean you need to reduce your music emissions.
If your venue, sound system and speaker set up is always the same, monitoring levels at your mixing desk may also help you to manage your music emissions.
As per step 4 above, when you record the levels at your ongoing monitoring locations, also record the levels at your mixing desk. Monitor your mixing desk levels. If your music goes above the levels you recorded, it may mean your music noise is above the noise limits at your noise sensitive areas. You may need to reduce your music emissions.
Case studies
Key legislation and documents
- Environment Protection Act 2017
- Environment Protection Regulations 2021
- Noise limit and assessment protocol for the control of noise from commercial, industrial and trade premises and entertainment venues (publication 1826)
- Technical guide: Measuring and analysing industry noise and music noise
- Entertainment venue and outdoor event music noise guidelines
Reviewed 14 June 2024