M-weighting

M-weighting is a special way of measuring sound that takes into account how easily different frequencies can be heard by the human ear. Imagine you have a really long stick and you tap it at different places. The sound it makes will be different depending on where you tap it, right? Similarly, the human ear hears some frequencies (or sounds) louder than others.

But when we measure sound, we can't just use a simple measurement like how loud something seems to the human ear. Why? Well, because not all sounds are equal! Some sounds have a lot of bass, while others might have more treble. That's where m-weighting comes in. M-weighting adjusts for how the human ear hears sounds of different frequencies.

M-weighting works like this: Instead of just measuring the loudness of a sound, we measure the loudness of the sound at different frequencies. Then we weigh each frequency differently, based on how easily the human ear can hear it. For example, we might weigh sounds at 1,000 Hz (which is a fairly high-pitched sound) less than a sound at 100 Hz (which is a lower-pitched sound) because the human ear is better at hearing low-pitched sounds.

The "M" in "M-weighting" stands for "minimum audible." That means the goal of m-weighting is to create a measurement that is as close as possible to what the human ear can actually hear.

So, in short, m-weighting is a special way of measuring sound that takes into account how the human ear hears different frequencies.