This survey is now over. Thank you to all who took part. The results of the survey will be published on our website, if you would like to be notified when they are available please email us.
Please listen to the whole clip: you can listen to each clip as many times as you like.
Note: Audio clips are randomised each time the page is visited.
It does not matter whether you consider there is or is not much of a difference between the samples as human responses vary and this is all part of the exercise. You may give them all a similar rating (similarly acceptable 2/10 or similarly unacceptable 8/10 for example) or you may rate them very differently. You might think that one sample is very annoying (10/10) compared to another sample which you think would not bother you at all (1/10). All are valid responses. Please judge your personal response based on how you rate or consider the sounds and not on what you might think is expected.