What is the intensity level in dB of the two sounds together?
What is the intensity level in dB of the two sounds together?
The Threshold of Hearing and the Decibel Scale
| Source | Intensity | Intensity Level |
|---|---|---|
| Threshold of Hearing (TOH) | 1*10-12 W/m2 | 0 dB |
| Rustling Leaves | 1*10-11 W/m2 | 10 dB |
| Whisper | 1*10-10 W/m2 | 20 dB |
| Normal Conversation | 1*10-6 W/m2 | 60 dB |
What is the sound intensity in W m2 of a sound that has a sound level of 100 dB?
Learning Objectives
| Table 1. Sound Intensity Levels and Intensities | ||
|---|---|---|
| Sound intensity level β (dB) | Intensity I(W/m2) | Example/effect |
| 90 | 1 × 10–3 | Inside a heavy truck; damage from prolonged exposure |
| 100 | 1 × 10–2 | Noisy factory, siren at 30 m; damage from 8 h per day exposure |
| 110 | 1 × 10–1 | Damage from 30 min per day exposure |
What is the formula of loudness of sound?
The loudness of a sound is measured in decibels. The decibel level of a sound is given by the formula D = 10 log (I/I0 ), where D is the decibel level (dB), I is its intensity in watts per square meter (W/m2 ), and I0 = 10−12 W/m2 is the intensity of a barely audible “threshold” sound.
How the loudness of a sound wave depends on the intensity of the sound wave?
Loudness depends on the intensity of the sound and not on the type of instrument used. Amplitude is a measure of the size of sound waves. It depends on the amount of energy that started the waves. Greater amplitude waves have more energy and greater intensity, so they sound louder.
What is meant by intensity of sound How is it different from loudness?
The intensity of a sound is the power of the sound in Watts divided by the area the sound covers in square meters. 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 .
What is the relation between loudness and intensity of sound?
The intensity of a sound is the power of the sound in Watts divided by the area the sound covers in square meters. 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).
How do you find the intensity of a sound wave?
Sound intensity can be found from the following equation: I=Δp22ρvw I = Δ p 2 2 ρ v w Δ p – change in pressure, or amplitude ρ – density of the material the sound is traveling through vw – speed of observed sound. The larger your sound wave oscillation, the more intense your sound will be.