This white noise maker has worked well for me for 8 years:
<a href="http:&#x2F;&#x2F;www.amazon.com&#x2F;dp&#x2F;B000LQI2S0" rel="nofollow">http:&#x2F;&#x2F;www.amazon.com&#x2F;dp&#x2F;B000LQI2S0</a><p>They work by increasing the volume of the background noise.  Sounds that would normally affect or you sleep end up blending in with the background noise.