STAcoustics EC Green Week 23rd May 2018 Slide 1€¦ · EC Green Week 23rd May 2018 Slide 2 . Number Highly Sleep Disturbed . 5.9 million adults . STAcoustics. EC Green Week 23rd

STAcoustics EC Green Week 23rd May 2018 Slide 1

Number Highly Annoyed

14.1 million adults


Number Highly Sleep Disturbed

5.9 million adults


Number of Hospital Admissions

69,000 per year


Number of Premature Deaths

15,900 per year


STAcoustics

Come and listen to how we can fight noise -

the hidden killer

Stephen Turner, MA, MSc, HonFIOA Director Stephen Turner Acoustics Limited

Paul Shields, FIOA & Dr Alex Southern, MIOA AECOM

STAcoustics 6 EC Green Week 23rd May 2018

Introduction to the Presenters


Paul Shields FIOA Operations Director

Acoustics AECOM

Dr Alex Southern MIOA Auralisation Lead

Acoustics AECOM

Stephen Turner HonFIOA Director

Stephen Turner Acoustics Limited

Session Overview

• What is Sound

• What is noise

• Effects of Noise

• Measures to Fight Noise


Sound

• We hear SOUND.


Photo: Wikipedia

Sound and Noise

• NOISE is unwanted SOUND


What turns Sound into NOISE?

Is it simply how loud it is?


Demonstration

• We are going to play 3 sounds

• Please select which one – you like the most

– you least like

– is the loudest


Demonstration

• Which one you like the

most

• Which one you least like

• Which one is the loudest


Demonstration Survey

• Which one did you like the most? – Extract No. 1

– Extract No. 2

– Extract No. 3



• Which one did you least like? – Extract No. 1

– Extract No. 2

– Extract No. 3



• Which one was the loudest? – Extract No. 1

– Extract No. 2

– Extract No. 3


Results

• Extract 1 Extract 2 Extract 3


Sound and Noise

One person’s SOUND can be another person’s NOISE


Sound and Noise

• Meters measure SOUND levels.


70 dB

Measuring Sound

• Here is one of the extracts being measured on the sound level meter


Sound and Noise


Published online by the BBC at https://www.youtube.com/watch?v=r-c5GpoD8wI

Sound and Noise

Our brain is involved in our interpretation of sound


Sound and Noise

The context and our attitude to the cause of sound can affect whether it is a NOISE


Environmental Noise

• Most of us agree that this is NOISE


Instinctive Reaction to Sound

• They hear a sound • What is it? • Unconscious Flight /

Fight reaction occurs • Can’t think about it –

might be too late • Increase heart rate,

cardiac output and blood pressure


Sound and Noise

SOUND becomes noise when we have a conscious adverse reaction to it. SOUND ALSO is noise because we have adverse reaction to it that we are not aware of.


How does noise affect us?


Noise induced hearing loss Health effects

Increased blood pressure Cardio-Vascular Disease

Heart Attack Stroke

Non-cognitive Biological responses

Personal physiological

characteristics

Disturbance

Distraction Speech Interference Disruption to Tasks Sleep Disturbance

Annoyance Complaints/ Action

Personal Characteristics

(Socio-psychological factors)

Noise Map of Glasgow

GLASGOW, SCOTLAND


SOURCE: https://noise.environment.gov.scot/noisemap/

Noise Map of Glasgow


Orange Purple Light Blue

Exposure which if experienced long term starts to increase risk of health effects


Complaints/ Action



Heart Attack Stroke



characteristics

Disturbance


Annoyance



Exposure which starts to cause adverse effects


Complaints/ Action



Heart Attack Stroke



characteristics

Disturbance


Annoyance



How it sounds indoors


How road traffic sounds when indoors






How railways sound when indoors






How aircraft sound when indoors






How to Manage Road Traffic Noise

1. Reduce the noise generated by individual vehicles



2. Reduce the speed



3. Use a Low Noise Road Surface



4. Use a noise barrier


R

Receptionpoint

h+0.5d

d’S

Effectivesourceposition

Sourceline

B

Diffracting edge

Edge of nearsidecarriageway

Shadow zone

Illuminated zone

Path difference (δ) = SB + BR – SR= SB + BR –d’

Who can apply these measures


Europe National or Local

Local Local

Reducing Noise at Source

• EC Regulation 540/2014

• Reduce by 3 dB

• Current

• With 3dB reduction


Reduce the Speed

• A reduction of about 4.5dB


Combining Source reduction with reduced Speed

• A reduction of about 7.5dB


Use a Low Noise Road Surface

• Original (100km/h)

• Low Noise Road Surface

• About a 4 dB reduction


Use a Low Noise Road Surface

• Original (50 km/h)

• Low Noise Road Surface

• About a 1 dB reduction


Noise barrier


The effect of a noise barrier


About a 10dB reduction

…. And Indoors


And that’s how we can fight noise


Europe National or Local

Local Local

But it’s not that simple…..

• Those measures add to the cost of vehicles.

• Take time and money to research and implement

• Reducing speeds increases journey times and adds to the cost of business travel


Europe

National or Local

But it’s not that simple…..

• Low noise roads originally more costly and not as hardwearing as concrete

• Need replacing more often • Technology improving

• Barriers spoil the view • Can sever communities • Need maintaining


Local

Local

There is a balance to be found

Society needs Good health & well-being

Society needs Industry, Commerce & Transport Infrastructure NOISE


Fighting Noise is a Team Effort Europe

Cities


If we work together…….


Nearly a 20 dB reduction

Must be worth doing

Number Highly Annoyed Number Highly Sleep Disturbed No. of Hospital admissions/year Number of deaths

14.1 million 5.9 million 69,000 15,900


And that’s how…

we can fight

NOISE The Hidden Killer


NOISE NOISE

Thank You

• Contact details:

• Email: [email protected] • Tel: + 44 7716 117063

• Email: [email protected] • Tel: + 44 7920 825541


mailto:[email protected]

mailto:[email protected]

Calibration

• PLEASE DO NOT DELETE

• PLAY THIS SOUND FILE AND USE MASTER GAIN ON MIXER TO ACHIEVE 75dB


Documents

STAcoustics EC Green Week 23rd May 2018 Slide 1€¦ · EC Green Week 23rd May 2018 Slide 2 . Number Highly Sleep Disturbed . 5.9 million adults . STAcoustics. EC Green Week 23rd