how come when you speed up an audio track, the pitch also (usually) goes up?
In: 38
I think [this image will help](https://www.vedantu.com/question-sets/b4470de2-50e2-41be-8357-39782c1791ab7878403365382370013.png)
Imagine those up and downs as the sound wave over time. The long up and downs are a low pitch and the short up and downs are a high pitch.
Now imagine making the top sound wave half as long by stretching it. It would look like the high pitch sound. That’s basically what speeding up an audio track does.
To not change the pitch when speeding a track up software needs to do a lot of work to change the sound waves back to low pitch.
I think [this image will help](https://www.vedantu.com/question-sets/b4470de2-50e2-41be-8357-39782c1791ab7878403365382370013.png)
Imagine those up and downs as the sound wave over time. The long up and downs are a low pitch and the short up and downs are a high pitch.
Now imagine making the top sound wave half as long by stretching it. It would look like the high pitch sound. That’s basically what speeding up an audio track does.
To not change the pitch when speeding a track up software needs to do a lot of work to change the sound waves back to low pitch.
Pitch depends on the frequency of the sound. When you draw out a sound wave, it goes up and down at varying times and varying amplitudes.
Let’s just think of a simple sine wave. It goes up and down repeatedly to the exact same intensity and at the exact same time interval all throughout. If you played a sound like this, it would be a simple tone with a pitch, and not much else going on because it’s a simple one.
If we played this sine wave faster, what we’re effectively doing is taking this sine wave and squishing it from the sides to make it fit in a smaller amount of time. This changes the frequency of it because each peak happens closer together than it did before. All sine waves are the same shape, but squishing and stretching them will change the frequency, and that changes the pitch that you’d hear from it in a speaker.
All sounds will work similarly. Squish it to make it fit in a smaller time frame, and the frequency goes up to keep everything going faster, and faster frequencies in sound mean higher pitches to our ears.
With computers and certain software, you can speed up sound without changing the pitch, because it actually changes the entire shape of the wave to make all the same pitches happen in the same order, but faster. But that’s relatively advanced and uses a lot of calculus
Pitch depends on the frequency of the sound. When you draw out a sound wave, it goes up and down at varying times and varying amplitudes.
Let’s just think of a simple sine wave. It goes up and down repeatedly to the exact same intensity and at the exact same time interval all throughout. If you played a sound like this, it would be a simple tone with a pitch, and not much else going on because it’s a simple one.
If we played this sine wave faster, what we’re effectively doing is taking this sine wave and squishing it from the sides to make it fit in a smaller amount of time. This changes the frequency of it because each peak happens closer together than it did before. All sine waves are the same shape, but squishing and stretching them will change the frequency, and that changes the pitch that you’d hear from it in a speaker.
All sounds will work similarly. Squish it to make it fit in a smaller time frame, and the frequency goes up to keep everything going faster, and faster frequencies in sound mean higher pitches to our ears.
With computers and certain software, you can speed up sound without changing the pitch, because it actually changes the entire shape of the wave to make all the same pitches happen in the same order, but faster. But that’s relatively advanced and uses a lot of calculus
Pitch depends on the frequency of the sound. When you draw out a sound wave, it goes up and down at varying times and varying amplitudes.
Let’s just think of a simple sine wave. It goes up and down repeatedly to the exact same intensity and at the exact same time interval all throughout. If you played a sound like this, it would be a simple tone with a pitch, and not much else going on because it’s a simple one.
If we played this sine wave faster, what we’re effectively doing is taking this sine wave and squishing it from the sides to make it fit in a smaller amount of time. This changes the frequency of it because each peak happens closer together than it did before. All sine waves are the same shape, but squishing and stretching them will change the frequency, and that changes the pitch that you’d hear from it in a speaker.
All sounds will work similarly. Squish it to make it fit in a smaller time frame, and the frequency goes up to keep everything going faster, and faster frequencies in sound mean higher pitches to our ears.
With computers and certain software, you can speed up sound without changing the pitch, because it actually changes the entire shape of the wave to make all the same pitches happen in the same order, but faster. But that’s relatively advanced and uses a lot of calculus
a cars engine is driven by little explosions. there are different types of engines, american cars often have got bigger rooms for those explosions, so they dont need to do those explosions very often, while italian cars often have got smaller explosionrooms, so those need to nearly double the amount of explosions. i think you know, that the pitch of italien cars is also higher than the pitch of american cars. so if you got a lot of single soundpeaks following each other, the more you have in a second, the higher is the pitch. take formula1 cars, they sound like angry bees.
a cars engine is driven by little explosions. there are different types of engines, american cars often have got bigger rooms for those explosions, so they dont need to do those explosions very often, while italian cars often have got smaller explosionrooms, so those need to nearly double the amount of explosions. i think you know, that the pitch of italien cars is also higher than the pitch of american cars. so if you got a lot of single soundpeaks following each other, the more you have in a second, the higher is the pitch. take formula1 cars, they sound like angry bees.
a cars engine is driven by little explosions. there are different types of engines, american cars often have got bigger rooms for those explosions, so they dont need to do those explosions very often, while italian cars often have got smaller explosionrooms, so those need to nearly double the amount of explosions. i think you know, that the pitch of italien cars is also higher than the pitch of american cars. so if you got a lot of single soundpeaks following each other, the more you have in a second, the higher is the pitch. take formula1 cars, they sound like angry bees.
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