The effect of brown and black noise on persons suﬀering from a low frequency sound
* Presenting author
Some people suffer from hearing an often untraceable low-pitched sound. To help them two types of low frequency noise (brown and black noise) were put on CD. Sufferers could obtain this free CD on request. Over the course of more than 10 years about 200 CD's were sent out.In these 10 years 26 applicants have given a spontaneous reaction by e-mail after having used the CD for a shorter or longer period of time. 23 of these comments were (very) positive, 2 comments stated the CD did not help. In 2018 a retrospective survey was designed for those that had requested a CD before November 2018. The main goal of this study is to investigate how the complaints have changed over time in relation to the use of the CD. Further questions examine which other measures participants have taken and how they use(d) the CD in practical terms (brown and/or black noise, playing time, frequency of use, volume). The study will start in February 2019 and a first analysis will be given in the paper. This may inspire others to help sufferers by using the same method. This could be an opportunity to include more participants in different areas.