What Does Sound Look Like? See With This Photographic Technique

shockleewebpic_whatdoessoundlooklikeSee the invisible and take a look at what sound waves look like thanks to a cool high-speed photographic technique called Schlieren Flow visualization which shows the change in air density as sound waves travel through the air. The technique was developed by German physicist August Toepler between 1859 and 1864.

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► Bomba Estéreo – El Alma y El Cuerpo

Currently on high rotation, take a listen to ‘El Alma y El Cuerpo’ the new single from the Colombian electropical group Bomba Estéreo off their third album ‘Elegancia Tropical’ which is independently dropping this week.

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Putting Out Flames With Sound

Did you know that audio frequencies can be used to put out fires? Watch this…

Performers on DARPA’s Instant Fire Suppression program evaluated an acoustic approach to suppressing flames. In this video, a flame is extinguished by an acoustic field generated by speakers on either side of the pool of fuel. Two dynamics are at play in this approach.

First, the acoustic field increases the air velocity. As the velocity goes up, the flame boundary layer, where combustion occurs, thins, making it easier to disrupt the flame. Second, by disturbing the pool surface, the acoustic field leads to higher fuel vaporization, which widens the flame, but also drops the overall flame temperature. As the same amount of heat is spread over a larger area, combustion is disrupted.

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► Spinachprince – Executive EP

Spinachprince is a trio of producers headed up by main composer Elliot Ross on synths, piano and guitar, alongside Thomas Faulds on machines and Charles Gorczynski on woodwinds.

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Seeing Sound: A New Acousto-Optic Scanning Technique Could Mean Better Speaker Technology

This new measurement technique developed by the UK based National Physical Laboratory [NPL] has big potential in the development of audio acoustics and product design. In other words, even better, more accurate sound systems coming soon near you.

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This Week’s #freesamplefriday Roundup

A really good selection for this here 20th installment of #freesamplefriday for 2011.

Let’s get right to it!

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