These are simple and very meaningful experiments. Simple yet powerful.
One can find out how the human brain perceives height of tone. Frequency is the objective engineering or physics stimulus, pitch is what we feel, what our brain perceives as height of a note. Frequency is measured in Hz. Pitch is measured in Mels from the word melody.
Acoustic volume should be turned down low to avoid damage of your ears or your speakers.
All that is needed is an online sinewave generator:
http://onlinetonegenerator.com
You may see how pitch perception changes as acoustic intensity increases. By keeping frequency constant to 440Hz for example. You will notice that even slight increase in volume will lower pitch (perception).
You may also listen to how 1600Hz sounds a very bad or flat double octave of for example 400Hz. Our brain wants more than 4x400Hz or 1600Hz. How much more you need and how much more your friends need you may discover yourself.
Keep volume down.
Our speakers ooops our ears are precious.
Bibliography:
Sound and Hearing - S. S. Stevens, Fred Warshofsky - Life Science Series
No comments:
Post a Comment