When you try to save time on YouTube, sometimes videos 2 times faster we follow. We do this sometimes to study lessons faster, and sometimes to consume video content faster.

When we speed up the videos along with the image the speaker’s voice also speeds up and the speaker’s voice sounds higher in our ears. What is the connection between this speed boost and the treble?

First, let’s learn about sound waves.

Sound waves, in their simplest form, energy from one place to another It’s a traveling wave. That is, these sound waves can propagate in liquids, solids and air.

periodic waves is in a continuous oscillating motion. Sound waves are also classified as periodic waves. It is possible to explain the movement of sound waves with an example. For example, if someone speaks into a microphone, start speaking causes vibrations in the microphone and these vibrations affect the air molecules. In this way, sound waves propagate in the air as a periodic wave. for people to hear offers.

An important property of sound waves is related to frequency.

Producing a meaningful sound The frequency of the sound is very important for: Frequency also determines the pitch of the sound. How high a sound is is determined by its pitch. When the pitch of a voice is high the sound is so high It is possible. You can understand this problem better, girls have a higher pitch than boys and therefore their voices are sharper and higher.

Normally let’s listen to the first 11 seconds of Tarkan’s Kuzu Kuzu song and the rest 2 times:

When we speed up the video by x2 We raised the pitch of Tarkan’s voice and therefore sound to us it got louder.

This is therefore caused by the noise during acceleration. vibrations go faster and the frequency of the sound wave increases. As the frequency increases, so does the pitch, and so the sound reaches our ears. comes with a higher pitch.

• Sources: University of Washington, TechTarget, University of Connecticut
• Image source: Wikipedia