 # Question: What Determines The Loudness Of A Sound And How Is Loudness Measured?

## How is loudness measured?

The loudness of a sound relates the intensity of any given sound to the intensity at the threshold of hearing.

It is measured in decibels (dB).

The threshold of human hearing has an intensity of about .

0000000000001 watts per meter squared and corresponds to 0 decibels..

## Does volume change frequency?

Anyway, the character of music and voices changes with changing of the frequency; change of volume does not have this effect. … When the Frequency of the wave is increase it oscillate more per 1 second, this means that the waves (wave crests) will be closer together; this then create a decrease in wavelength.

## Are pitch and volume the same?

Pitch is a measure of how high or low something sounds and is related to the speed of the vibrations that produce the sound. Volume is a measure of how loud or soft something sounds and is related to the strength of the vibrations.

## What is the relationship between the frequency and the pitch of a sound?

The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave.

## What are the 5 properties of sound?

There are five main characteristics of sound waves: wavelength, amplitude, frequency, time period, and velocity. The wavelength of a sound wave indicates the distance that wave travels before it repeats itself. The wavelength itself is a longitudinal wave that shows the compressions and rarefactions of the sound wave.

## What determines loudness of sound?

The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. … The vibration of a source sets the amplitude of a wave. It transmits energy into the medium through its vibration.

## Is volume determined by frequency?

The amplitude of a sound wave is a reflection of how much energy is carried, which contributes to the intensity of the sound. Intensity is measured in decibels and is perceived as sound volume. Thus, the volume is proportional to the amplitude of the sound wave. The frequency of a sound wave is perceived as pitch.

## How might you locate a sound that comes from behind you?

Your brain is able to do this by comparing tiny differences in the way that sounds affect each ear. … A sound in front or behind affects each ear the same way, with intermediate effects in-between. The brain uses these differences, even as small as a 100,000th of a second, to calculate where the sound is coming from.

## What are the 3 characteristics of sound?

The basic properties of sound are: pitch, loudness and tone. Figure 10.2: Pitch and loudness of sound. Sound B has a lower pitch (lower frequency) than Sound A and is softer (smaller amplitude) than Sound C. The frequency of a sound wave is what your ear understands as pitch.

## What two factors affect the loudness of a sound?

Loudness of sound is measured in decibel (dB). As energy reaching the ear depends on square of amplitude, so loudness of sound depends on two factors (z) Amplitude of sound waves and sensitivity of the ear.

## What determines the loudness of a sound and how is loudness measured quizlet?

The amplitude of a wave determines how much energy it contains and is perceived as loudness. Larger waves are perceived as louder.