Sunday, 24 January 2010
Stand still, step up, mark one
Thursday, 21 January 2010
City Centre Sounds
I have been asking people in Brighton what they like and dislike about city centre sounds :
Wearable sound baffles

Is it possible to use the principles of anechoic chambers to absorb sound in clothing? Could pleating and smocking techniques that use soft warm materials but also increase surface area, dampen surrounding sound and improve ability to have a conversation in noisy environments?
Rob Oldfield currently doing a PhD in 3D sound at Salford university advises:"Urban soundscapes often have quite a lot of low frequency sound but it is usually the higher frequency (1000Hz-10000Hz) sound that we humans find the most annoying (that's because they are the frequencies similar to speech and we are most sensitive to them).Concentrate on trying to make the higher frequencies lower because these are more annoying anyway (alarms, whistles, screeching breaks)
Your idea of the pleating/smocking is really good because this is a good way to absorb sound (usually if you imagine something that is good for keeping you warm/insulating, it will also be good at absorbing sound too) So you could be on to a winner with that, thicker material and bigger pleats will be better for lower frequencies and will absorb more sound in general. "
Friday, 15 January 2010
measuring sound

Advice on testing efficacy of baffles to cut out certain frequencies includes a number of methods:
- Play white noise and use sound meter to measure sound levels from a microphone close to the ear, with and without the baffles
- Play white noise and record with and without baffles. Import into Logic Pro to view frequencies that are affected
Saturday, 9 January 2010
books make libraries quiet
Jane Fordham pointed out to me the other day that it is the books that make libraries quiet. A complete self fulfilling physical effect. You need quiet in order to read. If you have enough books they create a physical equivalent of an anechoic chamber, i.e. multiple non reflective surfaces that are also insulating. Think of all those remainder books that get pulped that could be used to build quiet places....
Saturday, 12 December 2009
the poetry of moss
Investigating the potential and benefits of introducing small scale interventions of growth in urban environments has led to expert advice from the living roofs organisation. George Schenk sums up entirely what I have been thinking:
Thursday, 10 December 2009
Dont rush

Jacqui Chanarin told me about recent visitors to Japan where they are putting 'don't rush' signs up intended to influence crowd behaviour in commuter zones. The idea being that negotiating crowds could be easier and a less frustrating experience if everyone were more calm and careful. I found this one which apparently means " Don't rush or you will go round in circles"
Wednesday, 9 December 2009
noise

This DEFRA noise map shows the main route by road in and out of Brighton to the palace pier. The purple is the most noise 75 + dB(A) (mainly roads) the green 0.00-54.9 dB (A) is the least. The red patch 65.0-69.9 dB(A) (the steine ) despite being a large stretch of grass is surrounded by roads and on the high range for noise.

