diff --git a/pages/audio.noise.pollution.md b/pages/audio.noise.pollution.md
index 571a42b..7cf3e1f 100644
--- a/pages/audio.noise.pollution.md
+++ b/pages/audio.noise.pollution.md
@@ -6,4 +6,9 @@
 
 https://www.eea.europa.eu/en/advanced-search?q=noise+pollution&size=n_10_n&filters%5B0%5D%5Bfield%5D=readingTime&filters%5B0%5D%5Btype%5D=any&filters%5B0%5D%5Bvalues%5D%5B0%5D%5Bname%5D=All&filters%5B0%5D%5Bvalues%5D%5B0%5D%5BrangeType%5D=fixed&filters%5B1%5D%5Bfield%5D=issued.date&filters%5B1%5D%5Btype%5D=any&filters%5B1%5D%5Bvalues%5D%5B0%5D=Last+5+years&filters%5B2%5D%5Bfield%5D=language&filters%5B2%5D%5Btype%5D=any&filters%5B2%5D%5Bvalues%5D%5B0%5D=en
 
-https://www.sciencedirect.com/topics/earth-and-planetary-sciences/noise-emission ?
\ No newline at end of file
+https://www.sciencedirect.com/topics/earth-and-planetary-sciences/noise-emission ?
+
+
+## Attention
+- What bout notification sounds
+- What about portable speakers
\ No newline at end of file