<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>soulofmischief</author><text>No one here has mentioned temperature inversion [0] which is responsible for a lot of the cold-induced amplification perceived in urban areas. It&amp;#x27;s quite a fascinating effect.&lt;p&gt;[0] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;wisconsindot.gov&amp;#x2F;Documents&amp;#x2F;doing-bus&amp;#x2F;eng-consultants&amp;#x2F;cnslt-rsrces&amp;#x2F;environment&amp;#x2F;trafficnoiseweather.pdf&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;wisconsindot.gov&amp;#x2F;Documents&amp;#x2F;doing-bus&amp;#x2F;eng-consultants...&lt;/a&gt;</text><parent_chain><item><author>axxl</author><text>My thought on the general &amp;quot;loudness&amp;quot; of cold months was due to reduced noise blocking or absorbing greenery like tree leaves, grass, etc. Which is then altered by a significant snowfall leading to sounds being softened again.</text></item><item><author>Tanoc</author><text>This is something I noticed as a kid. We had a creek in our backyard, which,depending on the temperature the water would be louder or quieter. This annoyed our dog, which after a number of times caused me to notice. Running water is louder and much more sharp when it&amp;#x27;s cold out, and quieter and muffled when it&amp;#x27;s hot out. In the same way sounds are louder in a colder environment because there&amp;#x27;s already a low level of ambient energy contained in the air and so the energy disperses much more readily but dissipates much more quickly. Essentially a difference between a quick &amp;quot;crack&amp;quot; and a lingering &amp;quot;whump&amp;quot; in terms of auditory impact. This effect also propagates to solid materials, as cold metals and ceramics transmit sound better than warm ceramics or metals. A church bell quite literally is louder on a cold winter&amp;#x27;s day.</text></item></parent_chain></comment><story><title>Why you can hear the temperature of water</title><url>https://www.nytimes.com/2024/05/09/science/hot-water-sound-cold.html</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>xattt</author><text>The volume of water flow should&amp;#x2F;would also vary at different times of the year, based on how much the water table is loaded.&lt;p&gt;Not sure how much of this would be complimentary to the acoustic effect of temperature. Either way, it’s not a simple single-solution explanation.</text><parent_chain><item><author>axxl</author><text>My thought on the general &amp;quot;loudness&amp;quot; of cold months was due to reduced noise blocking or absorbing greenery like tree leaves, grass, etc. Which is then altered by a significant snowfall leading to sounds being softened again.</text></item><item><author>Tanoc</author><text>This is something I noticed as a kid. We had a creek in our backyard, which,depending on the temperature the water would be louder or quieter. This annoyed our dog, which after a number of times caused me to notice. Running water is louder and much more sharp when it&amp;#x27;s cold out, and quieter and muffled when it&amp;#x27;s hot out. In the same way sounds are louder in a colder environment because there&amp;#x27;s already a low level of ambient energy contained in the air and so the energy disperses much more readily but dissipates much more quickly. Essentially a difference between a quick &amp;quot;crack&amp;quot; and a lingering &amp;quot;whump&amp;quot; in terms of auditory impact. This effect also propagates to solid materials, as cold metals and ceramics transmit sound better than warm ceramics or metals. A church bell quite literally is louder on a cold winter&amp;#x27;s day.</text></item></parent_chain></comment><story><title>Why you can hear the temperature of water</title><url>https://www.nytimes.com/2024/05/09/science/hot-water-sound-cold.html</url></story>