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We retain very little of what we hear. In fact, studies show that we only remember around 10% of what we hear. This is because our brain can only process so much information at once. This number can also get lower or higher depending on a variety of factors, such as how well we were paying attention, how interested we were in the topic, and how often we heard the information. However, this number provides a general idea of how much information we take in through our ears and how much of it we actually remember.

What properties affect what we hear?

There are a few properties that affect what we hear.

• The loudness of a sound is determined by its amplitude or the height of the wave. The higher the amplitude, the louder the sound.
• The pitch of a sound is determined by its frequency or the number of waves per second. The higher the frequency, the higher the pitch.
• The timbre of a sound is determined by its harmonics or the combination of frequencies that make up the sound. Each instrument has a unique timbre based on its harmonic content.

What measures what we hear?

We hear sound. There are many ways to measure sound. The most important measure is the loudness of the sound. The loudness of a sound is measured in decibels (dB). The higher the decibel level, the louder the sound. Other measures of what we hear include the pitch of the sound, the timbre of the sound, and the duration of the sound.

If you want to know the name of the test that’s used to measure hearing, it’s called an audiometry evaluation. It’s a non-invasive hearing test that measures a person’s ability to hear different sounds, pitches, or frequencies.

Often hearing tests are carried out using a piece of equipment called an audiometer, which is used to measure how well your ears work.