- published: 26 Sep 2013
- views: 463
5:36
Can you hear the difference between a square wave and a sine wave?
A comparison between square waves and sine waves of various frequencies, displayed on an o...
published: 26 Sep 2013
Can you hear the difference between a square wave and a sine wave?
Can you hear the difference between a square wave and a sine wave?
A comparison between square waves and sine waves of various frequencies, displayed on an oscilloscope, with commentary. TRANSCRIPT I am going to demonstrate the difference in sound texture between a square wave and a sine wave, and show how they become subjectively increasingly similar at higher frequencies. I'll play a signal that alternates between square wave and sine wave, starting at 100 Hz. You will hear the difference clearly. As you can hear, the square wave has a very much brighter and harsher tone, compared to the sine wave, which is very smooth. The levels have been set to the same RMS values, so that both waveforms should be subjectively equally loud. Now I will increase the frequency to 1000 Hz, or 1 kHz. As I continue to increase the frequency I will adjust the timebase control of the oscilloscope so that you can see the shapes of the waveforms clearly. At 1 kHz the square wave and the sine wave still sound very different to each other. I will increase the frequency in 1 kHz steps... 2 kHz 3 kHz 4 kHz At this point you will probably start to hear both waveforms as being very similar, apart from a small difference in level that I will explain in a moment. Let's move more quickly through the frequency range... 6 kHz 8 kHz 10 kHz 12 kHz At this point, both waveforms sound pretty much identical. The reason for this is that the brightness of the square wave is caused by its harmonics. Where a sine wave only has one frequency component - its fundamental - the square wave has the fundamental and harmonics at whole odd-number multiples of the fundamental frequency. So in a 100 Hz square wave, you hear frequency components of 100 Hz, 300 Hz, 500 Hz, 700 Hz, and so on all the way up the frequency band, as you can see in this spectrogram. When we get to a fundamental frequency of 4 kHz however, the next frequency component, which we call the second harmonic is at 12 kHz. Many people can't hear frequencies as high as this. At a fundamental frequency of 8 kHz, the second harmonic is at 24 kHz, which hardly anyone is capable of hearing. It is also worth saying that digital audio sampled at 44.1 kHz which is common can't reproduce 24 kHz either. A sampling rate of 96 kHz was used to make the original recordings here to show on the oscilloscope, to allow a margin of safety. So, as the frequency increases, the harmonics of the square wave become inaudible, leaving only the fundamental, so at a high enough frequency it sounds exactly the same as a sine wave. Finally, let me explain the slight differences in level. Well, if the harmonic components of the square wave are being lost at very high frequencies, the overall level will therefore be a little lower. You might also notice some ringing in the square wave signal. This is probably being created by filtering in the digital-to-analog convertor. The ringing frequency is around 46 kHz, so it is well above the audio band. The oscilloscope, by the way, is specified up to 20 MHz, so we can expect it to be completely clean in the audio band. In summary, at increasing frequencies, a square wave begins to sound more and more like a sine wave.- published: 26 Sep 2013
- views: 463
9:38
Overtones, harmonics and Additive synthesis
Overtones are the basic building block of sound. Come and learn how to construct sounds at...
published: 30 Mar 2010
author: SynthSchool
Overtones, harmonics and Additive synthesis
Overtones, harmonics and Additive synthesis
Overtones are the basic building block of sound. Come and learn how to construct sounds at http://www.synthschool.com This video is about additive synthesis,...- published: 30 Mar 2010
- views: 93129
- author: SynthSchool
2:54
C64 Bass Guitar - Cool to be Square Wave?
Jeri shows a bass guitar she build from an old C64. It uses the original sound chip (SID 6...
published: 09 Jul 2012
author: jeriellsworth
C64 Bass Guitar - Cool to be Square Wave?
C64 Bass Guitar - Cool to be Square Wave?
Jeri shows a bass guitar she build from an old C64. It uses the original sound chip (SID 6581) for keytar and string sounds.- published: 09 Jul 2012
- views: 373925
- author: jeriellsworth
2:51
Koji Kondo - "The Legend of Zelda (Theme)" -- Chiptune Visualization / NES NSF
So, I decided to take a look at all the separate channels of some chiptune music at once. ...
published: 01 Dec 2011
author: 1ucasvb
Koji Kondo - "The Legend of Zelda (Theme)" -- Chiptune Visualization / NES NSF
Koji Kondo - "The Legend of Zelda (Theme)" -- Chiptune Visualization / NES NSF
So, I decided to take a look at all the separate channels of some chiptune music at once. Thought it might look cool, since those waveforms are usually so pr...- published: 01 Dec 2011
- views: 5415
- author: 1ucasvb
2:51
Sub Phatty Square Wave Test
As requested in other video, I'm posting a square wave test with the Moog Sub Phatty. Expl...
published: 11 Jul 2013
Sub Phatty Square Wave Test
Sub Phatty Square Wave Test
As requested in other video, I'm posting a square wave test with the Moog Sub Phatty. Exploring the sound of the square wave and PWM. Nothing really deep or musical...- published: 11 Jul 2013
- views: 458
1:02
Sine Wave to Square Wave using Fourier Series
Sorry for not putting up something....logical in such a long time. life is so busy I don't...
published: 03 Feb 2007
author: Russoft
Sine Wave to Square Wave using Fourier Series
Sine Wave to Square Wave using Fourier Series
Sorry for not putting up something....logical in such a long time. life is so busy I don't always feel like talking about school. Hope you enjoy!- published: 03 Feb 2007
- views: 72844
- author: Russoft
11:55
Basics of a Square Wave signal's harmonic content
This video (by request) explains the harmonic content of a squarewave signal. It shows tha...
published: 27 Aug 2012
author: w2aew
Basics of a Square Wave signal's harmonic content
Basics of a Square Wave signal's harmonic content
This video (by request) explains the harmonic content of a squarewave signal. It shows that a square wave is composed of a sinewave at the fundamental freque...- published: 27 Aug 2012
- views: 3095
- author: w2aew
11:51
Laplace transform: square wave
How to compute the Laplace transform of a square wave. Such ideas have important applicat...
published: 25 Sep 2013
Laplace transform: square wave
Laplace transform: square wave
How to compute the Laplace transform of a square wave. Such ideas have important applications in applied mathematics and physics.- published: 25 Sep 2013
- views: 73
2:45
DIY Square-Wave Generator (Musical Electronics - 3)
Ever wondered how an analog synthesizer actually generates sound? Using some basic compone...
published: 28 Jul 2011
author: NYU MARL
DIY Square-Wave Generator (Musical Electronics - 3)
DIY Square-Wave Generator (Musical Electronics - 3)
Ever wondered how an analog synthesizer actually generates sound? Using some basic components and a 7555 IC, we'll show you how to make your own square-wave ...- published: 28 Jul 2011
- views: 6026
- author: NYU MARL
4:44
Squarewave - Snitch
squarewave bad man. love this one. -- London born and based producer / DJ Squarewave has b...
published: 17 Feb 2013
author: TheWhilomBass
Squarewave - Snitch
Squarewave - Snitch
squarewave bad man. love this one. -- London born and based producer / DJ Squarewave has been involved in the music scene since the age of 16. Having started...- published: 17 Feb 2013
- views: 2194
- author: TheWhilomBass
3:53
change a square wave into a sine wave (3 pole R-C filter)
How to change a square wave into a sine wave (or triangle wave) with the help of a 3 pole ...
published: 09 Jun 2013
author: radiofun232
change a square wave into a sine wave (3 pole R-C filter)
change a square wave into a sine wave (3 pole R-C filter)
How to change a square wave into a sine wave (or triangle wave) with the help of a 3 pole R-C filter. The showed circuit works good on 31 KHz. The signal wea...- published: 09 Jun 2013
- views: 544
- author: radiofun232
2:23
ARP 2600 Blue Meanie Square Waves
The three square waves from (ultra rare) ARP 2600 Blue Meanie. Keyboard has a long log por...
published: 30 Jun 2013
author: AudioCentralMagazine
ARP 2600 Blue Meanie Square Waves
ARP 2600 Blue Meanie Square Waves
The three square waves from (ultra rare) ARP 2600 Blue Meanie. Keyboard has a long log portamento curve. As usual, (spring) reverb from synthesizer, no exter...- published: 30 Jun 2013
- views: 402
- author: AudioCentralMagazine
4:43
Square Wave™ TIG 175 Welder
Lincoln Electric's Square Wave TIG 175 is a great tool for any shop. It's superior TIG and...
published: 08 May 2012
author: lincolnelectrictv
Square Wave™ TIG 175 Welder
Square Wave™ TIG 175 Welder
Lincoln Electric's Square Wave TIG 175 is a great tool for any shop. It's superior TIG and stick welding capabilities, plus all the included accessories, mak...- published: 08 May 2012
- views: 13947
- author: lincolnelectrictv
Youtube results:
5:05
DIY Square Wave Oscillator
This is what my homemade Square Wave Oscillator sounds like, after being run through my pe...
published: 01 Nov 2010
author: PinnacleRecords
DIY Square Wave Oscillator
DIY Square Wave Oscillator
This is what my homemade Square Wave Oscillator sounds like, after being run through my pedalboard and minimoog filters.- published: 01 Nov 2010
- views: 11106
- author: PinnacleRecords
3:45
Square Wave™ TIG 175
Learn more about the return of this classic machine. Not only does the Square Wave™ TIG 17...
published: 27 Feb 2012
author: lincolnelectrictv
Square Wave™ TIG 175
Square Wave™ TIG 175
Learn more about the return of this classic machine. Not only does the Square Wave™ TIG 175 offer proven reliability and performance, but it comes with featu...- published: 27 Feb 2012
- views: 3980
- author: lincolnelectrictv
3:47
Spongebob Squarewave - Rescue Spongebob
From His New E.P "Water Bomb" ! Get it at http://offmenutrecords.bandcamp.com Check out my...
published: 29 Aug 2012
author: sugarpooper
Spongebob Squarewave - Rescue Spongebob
Spongebob Squarewave - Rescue Spongebob
From His New E.P "Water Bomb" ! Get it at http://offmenutrecords.bandcamp.com Check out my other off me nut records videos ! :)- published: 29 Aug 2012
- views: 1979
- author: sugarpooper
5:12
Spongebob Squarewave - Turn Back The Time
From His New E.P "Water Bomb" ! Get it at http://offmenutrecords.bandcamp.com Check out my...
published: 29 Aug 2012
author: sugarpooper
Spongebob Squarewave - Turn Back The Time
Spongebob Squarewave - Turn Back The Time
From His New E.P "Water Bomb" ! Get it at http://offmenutrecords.bandcamp.com Check out my other off me nut records videos ! :)- published: 29 Aug 2012
- views: 994
- author: sugarpooper