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What causes different piches in sound?
Different pitches of sound are caused by intensity, pitch, and tone. Intensity is the amount of energy a sound has over an area. This means the same sound is more intense if you hear it in a smaller area. In general, sounds with a higher intensity are louder. Pitch depends on the frequency of a sound wave - high sounds have high frequencies and low sounds have low frequencies. The quality of the sound depends entirely on the combination of different frequencies of sound waves.
What are two sound waves with the same frequencies and different amplitudes?
Same pitch but with different loudness
Two sound waves of the same frequency can interfere with each other but two sound waves must have different frequencies in order to make beats. Why?
To alternate between constructive and destructive interference requires different frequencies.
What converts sound vibrations into electrical impulses?
The cochlea converts vibrations into electrical sounds
The part of the ear that transfers sound vibrations to the cochlea is the?
Tympanic membrane --> malleus --> incus --> stapes --> oval window --> cochlea
How is hearing affected if a person 's cochlea is damaged?
The cochlea is the part of the inner ear that takes vibrations, transferred from sound waves hitting the eardrum (tympanic membrane) and converts them into signals for the auditory nerve. Different parts of the cochlea "encode" different frequencies (pitches) of sound. Therefore, if only part of the cochlea is damaged, a person may lose the ability to hear certain frequencies of sound. If it is damaged enough, the person may lose the ability to hear completely in one ear.
How does humans perceive changes in frequency?
cochlea of ear perceive and respond to various frequencies in sound...
Is the cochlea and the eardrum the same thing?
No. The eardrum (also known as the timpanic membrane) is a membrane that helps amplify sounds. The cochlea is deeper inside the ear, behind the eardrum. It is like a tube with little tiny hairs that vibrate at different sound frequencies which transmit information to the brain to help us percieve sound at different tones and pitches.
How does the cochlea detect sound signals?
the cells of the hairs don't detect the sound waves at all. The full hair is vibrated by the sound waves and this vibration is picked up by nerves and the info is sent to the brain.
Can different sounds be produced by sound waves with the same frequencies?
No. The frequencies determine the sound.
What result from wavelengths and frequencies of light and sound?
Different wavelengths and frequencies of light are interpreted as different colours; those of sound are interpreted as pitch.
What results from wavelengths and frequencies of light and sound?
Different wavelengths and frequencies of light are interpreted as different colours; those of sound are interpreted as pitch.
What part of the ear converts vibrations to action potentials?
The inner ear contains the receptors for sound which convert fluid motion into action potentials that are sent to the brain to enable sound perception. The airborne sound waves must be transferred into the inner ear for hearing to occur.
Which type of receptor is involved in sound detection?
The receptors for sound are the 'cilia' ... tiny hairs that line the inner surface of the cochlea in the inner ear. Sound vibrations are directed into the cochlea by means of the eardrum and the bones of the middle ear, where the cilia move mechanically and excite the nerve endings to which they're attached.
Do all sound waves have the same wave length but different frequencies?
no
Why are tones of different frequency used during hearing tests?
Simply because the human ear can detect many thousands of different frequencies (typically 50Hz to 20,000Hz) Testing someone's hearing ability over a range of frequencies determines whether they can hear the normal spectrum of sound or not. As we get older - our hearing starts to fade - and we no longer hear the higher or low frequencies at the edge of the normal range.
How is sound transimitted?
Sound is the compression of molecules and atoms in waves which can have different frequencies amplitudes and wavelengths that determine how we interpret the sound.
