Sound Waves

You hear the vibrations of your vocal cords.

hair cells

Just divide the number of cycles (the 16 waves) by the number of seconds.

we hear an echo because its in our blood to hear things in a repeditive form but a lot quieter.

Analog clocks show the time; they don't process information.

There are two transducers (the ear drum and a thin section of skull) where sound is shifted from one media to another (air 2 mechanical & mechanical to liquid),

and a transducer in between to change high amplitude, low power into low amplitude, high power.

Each one of these is a mechanical device with its own resonant frequencies and moments of inertia.

Some tea pots are equipped with a 'whistler' a bit like an alarm, this is to indicate that the water being boiled has reached its boiling point.

Air

A drill operating at ultrasonic frequencies (>20 kHz) will usually employ a hard abrasive powder to actually do the drilling. The drill bit (which could be soft) vibrates back and forth at a high frequency, and grinds the substrate away with the abrasive.

Both are forms of mechanical waves but moves or travels differently. Transverse travels perpendicular to it waves while longitudinal are made up of compressions and rarefactions, so no their not interchangeable.

Loudness increases with increasing amplitude of the sound wave, also called increasing sound pressure.

The wavelength is about 67 centimeters,

regardless of how far it travels.

Ocean waves have a distinct sound that soothes a lot of people and can help people sleep. They make a sort of whooshing sound and almost sounds like the wind mixed with water.

A bell

A bomb explosion

Any sound made by a manmade device. This can be any vibration or signal, whether audible to humans or not. A more specific term is artificial noise, which may be deliberately generated.

Just a small electronic beeper to signal when cooking is complete, a control key is pressed, etc.

The ossicles amplify the sound. They send the sound waves to the inner ear and into the fluid-filled hearing organ (cochlea). ... The auditory nerve sends these impulses to the brain. The brain then translates these electrical impulses as sound.

Some animals can hear higher frequencies than humans can. This is why animals can hear things like dog whistles, and we can't hear them. In all, animals can hear differently than humans in the way that they can hear more.

Some animals can hear lower frequencies than humans can. Elephants can hear much lower frequencies than humans.

Scientists do not need perfect pitch to analyze sounds because they rely on various tools and techniques, such as spectrograms and frequency analyzers, to visualize and measure sound properties. These instruments can accurately display frequency, amplitude, and harmonic content, allowing researchers to study sounds quantitatively. Additionally, trained listening skills and comparative analysis can often suffice for identifying and interpreting sounds without requiring absolute pitch recognition.

sound waves are created by producing the vibrations in air

The eardrum (tympanic membrane) is much larger than the oval window, which is the entrance to the inner ear. When sound waves strike the eardrum, it vibrates and transmits these vibrations to the smaller oval window. Because the area of the eardrum is significantly greater, the pressure from the vibrations is concentrated and magnified at the oval window, allowing the inner ear to effectively detect and amplify the sound signals. This mechanical advantage is crucial for hearing, as it enables the efficient transmission of sound energy into the fluid-filled inner ear.

SONAR

Sound propagates through a longitudinal wave, a type of mechanical wave.