science of auto-tune

The Science of Auto-Tune: How WWII Spy Tech is Making a lot of Pop Stars Rich

Auto tune science

How does your voice sound? Can you rock a karoke mic or are you somebody who just lip-syncs while the crowd around you sings on? Now anyone can be a star performer with a little digital audio assistance from the Auto-Tune effect.

Ever since Cher released the song Believe way back in 1998, radio stations have been stacking their playlists with Auto-Tune tracks. Originally, Antares, the company that developed the audio effect, intended it to be used as a tool to make musicians sound like they have pitch-perfect voices. In the beginning, that’s how it was used, as a type of airbrush to hide the imperfections of a musician’s voice. Since then, it has evolved into an effect that distorts a vocal track instead of giving it a glossy perfectness. Auto-Tune has been used by everyone from Snoop Dogg to Celine Dion. T-Pain even went on to create a mobile app called I am T-Pain so you could Auto-Tune your own voice with the T-Pain Effect while singing along to his songs.

Auto-Tune has faced a lot of criticism since it was first released, yet Auto-Tuned songs are crowding the airwaves more than ever. It seems like it is a technology that is here to stay.

Basically, auto-tune is a type of vocoder, short for voice encoder, a technology developed in the late 1920′s by Bell Labs and used for encrypted high-level voice communications during World War IIAccording to Innovative Synthesis, a vocoder needs two inputs to function properly. A ‘carrier’ wave, and a ‘modulator’ input. The carrier is the sound you want to vocode through, and the modulator is your voice. The modulator takes your voice’s frequencies and converts them into levels of amplitude on a series of band pass filters (this is why some vocoders have different numbers of bands) – in general, the more bands available the more understandable your speech will be. These band pass filter signals are then passed onto the carrier wave where your final sound is created. In music, the classic vocoder was used in 70′s funk music to create a robot effect, influences that later inspired songs by Snoop Dogg, Daft Punk and of course T-Pain.

science of auto-tune

A vocoder was used to create the voice for Soundwave in the 80′s hit cartoon Transformers.

Auto-Tune science is slightly different, in that it measures and alters pitch in vocals and instrumental music, allowing pop stars who can’t sing for their life (not naming names) and making them perfectly tuned even though they’re completely off-key. The software shifts pitches to the nearest true semitone, to the exact pitch of the nearest tone (via Wikipedia). The future of music ladies and gentlemen…

Read the lesson below to take a deeper look at the science behind Auto-Tune and learn some tricks to produce similar effects. Get your hands on some free digital audio editing software similar to what is used in the industry and try making your own effect heavy beats. Can you create something that can one-up the next Kanye West track?

sleeping

10 Steps to Make Summer School Not Suck

Summer is here, but you still find yourself in school. Maybe you didn’t pass a class that is required for graduation. Or maybe you want to take a class because your schedule during the school year is full. Whatever the reason is for taking a summer school class, sitting in a classroom for two hours every day for a few weeks isn’t your idea of fun. However, it doesn’t have to be so bad. Here are ten steps to make summer school not suck.

1. Have a friend sign up

Having a friend sign up makes summer school more bearable. Your friend is going to be by your side and make things easier. You can also do homework and study for tests together.

2. Ask for breaks

During the normal school day, your classes don’t last much longer than 70-80 minutes. However, summer school classes tend to be longer — most last about two hours. If you’re having trouble sitting for that long, ask the teacher for at least one break. This gives you time to get up and move around, since it’s not good to be sitting down for so long.

3. Ask if the class can go outside

Summer is usually more laid back than during the school year so ask if the teacher will take you outside. What better way to learn Shakespeare or science or whatever the subject than outside under a tree.

4. Engage yourself in the learning

Doing homework and studying for tests is hard enough during the regular school year. Think about how hard it is during the summer. You spend two hours in class, but then have homework to do, a research paper to write, or a test to study for. Do the homework and study every night so you don’t get behind.

5. Be respectful to the teacher

Your summer school teacher may be someone you don’t know, who doesn’t want to be there any more than you do. After all, summer is a time for him or her to be away from school as well. But teachers sometimes work part-time jobs in the summer to help pay bills or to earn extra money. Respecting and getting along with the teacher goes a long way and makes class more fun.

6. Get your sleep

While summer is the time for you to stay up late watching movies or hanging out with friends, you still need your sleep. You can’t sleep in class, or you won’t do well. Going to bed at a decent time will help lead to your success.

7. Take care of yourself

If you got up late and hurried to class or didn’t feel like eating breakfast, ask if bringing a snack or, at least, a bottle of water is allowed. Eating and drinking helps us stay awake when we’re bored. If you get dehydrated, you get sleepy and have trouble paying attention in class.

8. Be on time

During the school year, you are expected to be on time. If you’re late, you get a tardy and too many tardies add up to you not earning your credit for summer school. You certainly don’t want to lose the credit if you have almost made it to the end of summer school.

9. Stay positive

No matter how bad summer school really is, remember to stay positive. Doing some of things suggested above will help with that. Ask your teacher and see what he will allow you to do.

10. Remember why you are there

No matter the reason as to why you are there in summer school, the important things to remember are to do well, respect the teacher and his rules, and earn your credit. You don’t want to waste your summer.

sleeping

10 Steps to Make Summer School Not Suck

Summer is here, but you still find yourself in school. Maybe you didn’t pass a class that is required for graduation. Or maybe you want to take a class because your schedule during the school year is full. Whatever the reason is for taking a summer school class, sitting in a classroom for two hours every day for a few weeks isn’t your idea of fun. However, it doesn’t have to be so bad. Here are ten steps to make summer school not suck.

1. Have a friend sign up

Having a friend sign up makes summer school more bearable. Your friend is going to be by your side and make things easier. You can also do homework and study for tests together.

2. Ask for breaks

During the normal school day, your classes don’t last much longer than 70-80 minutes. However, summer school classes tend to be longer — most last about two hours. If you’re having trouble sitting for that long, ask the teacher for at least one break. This gives you time to get up and move around, since it’s not good to be sitting down for so long.

3. Ask if the class can go outside

Summer is usually more laid back than during the school year so ask if the teacher will take you outside. What better way to learn Shakespeare or science or whatever the subject than outside under a tree.

4. Engage yourself in the learning

Doing homework and studying for tests is hard enough during the regular school year. Think about how hard it is during the summer. You spend two hours in class, but then have homework to do, a research paper to write, or a test to study for. Do the homework and study every night so you don’t get behind.

5. Be respectful to the teacher

Your summer school teacher may be someone you don’t know, who doesn’t want to be there any more than you do. After all, summer is a time for him or her to be away from school as well. But teachers sometimes work part-time jobs in the summer to help pay bills or to earn extra money. Respecting and getting along with the teacher goes a long way and makes class more fun.

6. Get your sleep

While summer is the time for you to stay up late watching movies or hanging out with friends, you still need your sleep. You can’t sleep in class, or you won’t do well. Going to bed at a decent time will help lead to your success.

7. Take care of yourself

If you got up late and hurried to class or didn’t feel like eating breakfast, ask if bringing a snack or, at least, a bottle of water is allowed. Eating and drinking helps us stay awake when we’re bored. If you get dehydrated, you get sleepy and have trouble paying attention in class.

8. Be on time

During the school year, you are expected to be on time. If you’re late, you get a tardy and too many tardies add up to you not earning your credit for summer school. You certainly don’t want to lose the credit if you have almost made it to the end of summer school.

9. Stay positive

No matter how bad summer school really is, remember to stay positive. Doing some of things suggested above will help with that. Ask your teacher and see what he will allow you to do.

10. Remember why you are there

No matter the reason as to why you are there in summer school, the important things to remember are to do well, respect the teacher and his rules, and earn your credit. You don’t want to waste your summer.

dacebook-instagram-540x359

Teen Usage: Instagram vs. Facebook

Is Instagram the most popular social media app among 12-17 year-old teens? Or is Facebook still on top? Statistics vary on how many teens use each platform. CBS News stated 76% of teens use the app compared to 45% on Facebook. A Pew Research report said only 52% of teens use Instagram versus the 71% who use Facebook.

The Pew Research shows wealthier teens, or those whose parents make over $75,000, use Instagram 23% more than those teens under $30,000 at 7%. Facebook is the preferred social media among the lower income teens at 49% versus 37% for upper income teens. Girls are on Instagram more than boys, 61% versus 44%.

Instagram is more popular than Facebook among wealthy teens

Instagram began as strictly a photo sharing app, but its popularity with teens has made the app more of a social network. Teens use hashtags along with their photos and videos to gain more followers. Because of Instagram, data usage has tripled among teens. As the app has become more popular, Instagram has begun to spread to younger children. One of Instagram’s rules is that a person must be thirteen to have a profile. However, children younger than thirteen are still creating profiles, showing that younger children are becoming drawn into the social media platform.

Hashtags help with SEO, or search engine optimization. Because many teens think it’s best to have more followers than those they are following, they seek to find new followers by showing off their photos to more people. The use of hashtags makes photos and videos available for everyone to see. The more hashtags posted alongside the photos and videos, the more likely it is that new people will see those photos. Having more followers seems to appeal to teens because it makes them look more popular among their peers.
So is Instagram or Facebook more popular among the 12-17-year old teens? Do teens really use hashtags to gain followers?  How do teens know which is the most popular social media among their age group? They can conduct their own survey and draw their own conclusions.

The Art of Storytelling

The objective of this lesson plan is to engage students in the art of storytelling and improve their public speaking skills.

The_Force tn

The Science of The Force

The Force
What is The Force in the Star Wars universe? Could we as humans, here on planet earth, ever dream of having such power at our fingertips? To answer that we need to look at what The Force is, and how the rules that define it compare to what is known about the world we live in.

“Well, the Force is what gives a Jedi his power. It’s an energy field created by all living things. It surrounds us and penetrates us; it binds the galaxy together.” Obi-Wan Kenobi

In Star Wars, The Force is an energy field that connects all living things in the galaxy. The power of The Force can be used by individuals who are sensitive to it, a power that is tapped through the midi-chlorians.

Midi-chlorians are microscopic, intelligent lifeforms that live within the cells of all living beings in the Star Wars Universe. The Force spoke through the midi-chlorians, allowing certain beings to use the Force if they were sensitive enough to its powers.

The two main practitioners of The Force are the Jedi and the Sith. Usage of the Force grants a number of useful powers, such as the ability to sense impending attacks; to push and lift physical objects; influence the thoughts of others, known as the “Jedi mind trick”; and even see the future or maintain one’s consciousness after death. Dark side users strong with the Force could summon lightning from their fingertips. Jedi taught younglings that the Force could be used for many purposes, including protection, persuasion, wisdom, the manipulation of matter and the performance of great physical feats.
Earth Forces
So, that being said, how does this compare with the laws of physics in our world? The closest thing we have to an energy field that is all around us, is the electromagnetic force.  It is one of the four known fundamental forces and is a type of physical interaction that occurs between electrically charged particles.

The electromagnetic force is the one responsible for practically all the phenomena one encounters in daily life above the nuclear scale, with the exception of gravity. Roughly speaking, all the forces involved in interactions between atoms can be explained by the electromagnetic force acting on the electrically charged atomic nuclei and electrons inside and around the atoms, together with how these particles carry momentum by their movement.

If elevated levels of electromagnetism were directed at certain areas of the brain, this can affect people mentally.  If you direct magnetic fields at different parts of the brain you get all sorts of responses.  They can be used to pacify a subject, make someone hallucinate, can even be used to alter someone’s sense of morality.

Eventually we’ll be able to photograph a dream…it is well within the lines of physics, to photograph a dream.

Science Fiction? Or just Science?
According to physicist, Dr. Michio Kaku, aspects of the force are being developed today.  We can now begin to decipher the outlines of thinking via the electroencephalogram (EEG) and the MRI, which gives us living pictures of thoughts ricocheting like a ping pong ball inside the brain.  We now have computers that can read these thoughts.  In Japan, we even have a device that allows you to see what you are seeing on a small scale – like seeing a memory on a computer screen.  Eventually we’ll be able to photograph a dream, for example.  According to Dr Kaku, it is well within the lines of physics, to photograph a dream.

We can’t exactly use electromagnetism to move people’s bodies at our will, but we know certain parts of the brain are connected to certain parts of the body, and we’ll be able to energize them, perhaps, with electromagnetic radiation.  So we’ll be able to actually manipulate arms and legs of a person, simply by using electromagnetic radiation beamed into the brain.  This technology is very primitive at the present time, but we’re getting there very fast.

If electromagnetic forces are the key to unlocking our own Force like abilities within the rules of physics on earth, then we need something to be able to direct or utilize that force whenever we desire.  There is already an example in nature of a creature that is able to process or read electromagnetism all around it – sharks and other cartilaginous fish.

Sharks have the Ampullae of Lorenzini, electroreceptors that form a network of jelly-filled pores in their nose. This organ allows them to detect the electromagnetic fields of the objects around them.  They can sense great disturbances, like a ship with a large magnetic field, or small ones like a fish they’d like to eat that’s nearby.  Perhaps if we had some biological enhancement, like the Ampullae of Lorenizini, or if midi-chlorians somehow became a real thing, we’d be able to read and understand, maybe even use the electromagnetic forces around us.

What is known about our physical world is fascinating, and the forces that are all around are fantastical in their own right. With understanding, and when taken to the next level through technology and research, our world could be closer to the science fictional world of Star Wars.

ps4_virtual_reality-1366x768 thumbnail

The Future is Here Pt. 1 of 3: Virtual Reality, The Beginning or the End of Society as We Know It?

 

matrix_slide_01-36ss-virtual-reality-100413967-orig_thumb800

“Whoa!” That was the famous word Keanu Reeves said when he discovered the alternate reality of The Matrix back in 1999. Of course, as we learned in the movie, Keanu was stuck in a false reality. His senses were tricked into believing he was on Earth, when in reality an alien planet was living off his body and sending false signals to his brain through some creepy cord connected to his head. It was an apocalyptic, futuristic take on virtual reality, a concept that has been featured in many science fiction films.

The origins of virtual reality date back to 1968 when Ivan Sutherland created a wearable headset  to simulate being in a wireframe polygon room at the University of Utah. Starting in 1966, Thomas Furness spent over two decades at the Wright-Patterson Air Force Base developing the virtual reality environments for pilots to train in. In the 1990s, movies like Lawnmower Man and Disclosure, made Virtual Reality look like it was about to enter the mainstream. By the mid-1990s gaming companies Sega, Atari and Nintendo had all invested heavily in Virtual Reality focused games, but the Virtual Reality hype quickly fizzled when all of their prototypes failed. Nintendo managed to get two of its products in the marketplace, the Power Glove and Virtual Boy, but they had awful sales and caused a virtual reality bust.

NES-Power-Glove
Virtual-Boy-wController

The possibilities of virtual reality have only reemerged recently with Oculus Rift, a VR headset company that Facebook bought for $2 billion in 2014. LucasFilms is currently marketing Star Wars: The Force Awakens with a Google Cardboard virtual reality experience called Jakku Spy and even the New York Times is embracing it. But what is it? How does it ‘trick’ our brains? How can it be used for social good? In this lesson make your own VR headset and get in on the ground floor in figuring out how VR can change the world.

ps4_virtual_reality-1366x768 thumbnail

The Future is Here Pt. 1 of 3: Virtual Reality, The Beginning or the End of Society as We Know It?

 

matrix_slide_01-36ss-virtual-reality-100413967-orig_thumb800

“Whoa!” That was the famous word Keanu Reeves said when he discovered the alternate reality of The Matrix back in 1999. Of course, as we learned in the movie, Keanu was stuck in a false reality. His senses were tricked into believing he was on Earth, when in reality an alien planet was living off his body and sending false signals to his brain through some creepy cord connected to his head. It was an apocalyptic, futuristic take on virtual reality, a concept that has been featured in many science fiction films.

The origins of virtual reality date back to 1968 when Ivan Sutherland created a wearable headset  to simulate being in a wireframe polygon room at the University of Utah. Starting in 1966, Thomas Furness spent over two decades at the Wright-Patterson Air Force Base developing the virtual reality environments for pilots to train in. In the 1990s, movies like Lawnmower Man and Disclosure, made Virtual Reality look like it was about to enter the mainstream. By the mid-1990s gaming companies Sega, Atari and Nintendo had all invested heavily in Virtual Reality focused games, but the Virtual Reality hype quickly fizzled when all of their prototypes failed. Nintendo managed to get two of its products in the marketplace, the Power Glove and Virtual Boy, but they had awful sales and caused a virtual reality bust.

NES-Power-Glove
Virtual-Boy-wController

The possibilities of virtual reality have only reemerged recently with Oculus Rift, a VR headset company that Facebook bought for $2 billion in 2014. LucasFilms is currently marketing Star Wars: The Force Awakens with a Google Cardboard virtual reality experience called Jakku Spy and even the New York Times is embracing it. But what is it? How does it ‘trick’ our brains? How can it be used for social good? In this lesson make your own VR headset and get in on the ground floor in figuring out how VR can change the world.