This R script makes a plot of Wavelength versus Frequency based on the speed of sound (c) and two different termperatures (https://en.wikipedia.org/wiki/Speed_of_sound):
c = 20 * sqrt (273 + T)
Developer
Antoine van Kampen
www.skippyweb.eu
January 2023
License
GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. https://fsf.org/ .Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.