What is the meaning of persistence of hearing?

What is the meaning of persistence of hearing?

Answer: Persistence of hearing of a human ear means how much time the sensation of any sound stay in our brain. For normal human ear the value is 0.1 s. Now If the persistence of hearing is increased or decreased compared to normal ear ,it indicates the hearing loss of the human ear.

What is persistence of hearing class 9?

Persistence of hearing of a human is described as a time for which sensation of any sound remains in our brains. Complete answer: The sensation of hearing any sound persists in our brain for 0.1sec. This is known as persistence of hearing.

What is the persistence of sound?

PERSISTENCE OF SOUND. In a given space , say a room, when asound is produced; several echoes due to reflection builds up and even after source of sound gets removed, the echo sustains and makes us to hear the sound. This phenomenon is referred to as “Persistence of sound” or Reverberation.

What is persistence of audibility or persistence of hearing?

The sensation of hearing produced by a sound is retained for a period of 101​s=0. 1s. This characteristics of the ear is the persistence of audibility. If another sound reaches the ear within 0. 1s, simultaneous hearing of both the sounds is experienced.

What is the minimum distance required to hear an echo?

So, if the obstacle is at least 17 m away, then after 0.1 second, the reflected sound or the echo is clearly detected. Hence, to hear a clear echo, the minimum distance between the reflecting surface and the observer is 17 m.

Can humans hear sounds at any frequency?

Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)

What is the persistence of sound in our brain?

The sensation of hearing of any sound persists in our brain for 0.1s. This is called the persistence of hearing.

What is a good reverberation time?

Around 2 seconds
What is a desirable reverberation time? The optimum reverberation time for an auditorium or room of course depends upon its intended use. Around 2 seconds is desirable for a medium-sized, general purpose auditorium that is to be used for both speech and music. A classroom should be much shorter, less than a second.

What name is given to the persistence of sound in a big hall?

Reverberation is the persistence of sound in a particular space after the original sound is produced.

What is the value of persistence of hearing class 8?

0.1s
The sensation of hearing of any sound persists in our brain for 0.1s. This is called the persistence of hearing.

What determines the pitch of a sound?

The number of vibrations per second or frequency determines the pitch of a sound. Frequency is directly proportional to pitch. Higher the frequency, higher the pitch.

What is the minimum distance required to hear distinct echo 9?

17.2 m
Answer: The minimum distance (d) for the distinct echo to be heard (say at 22°C) is 17.2 m (as 2d = vt = 344 x 0.1 = 34.4 m ). On a hotter day, the temperature increases and the speed of sound in air also increases.