#omnidirectional

[almondcroissantsandink]

faux book cover for the fic Mr. Bluesky by omnidirectional because i read it a few weeks ago, it rattled around in my brain for a while, and I realized i had to draw something for it lol

[stevebattle]

FETAL I by William H.T. La (1984). La, pictured above with his wife, was a Vietnamese exchange student when, playing with an erector set one day, he found that by adding wheels within wheels, they could move in any direction. This led him, in 1980, to patent the idea of mounting these omni-wheels on a triangular base. La also managed software development for Topo 1 at Androbot. FETAL I is a three-wheeled robot with each of its wheels arranged at the corners of an equilateral triangle (sometimes described as a "Kiwi drive", though this was developed later). Each wheel is independently driven, rotating about a fixed axis. The wheels have passive wooden rollers around their periphery, arranged in two rows providing an unbroken ring of rolling surface. This enables omnidirectional travel, without need of mechanical steering. FETAL I, in its attractive wooden housing, made its first major public appearance at the International Personal Robots Congress (IPRC) held in Albuquerque, New Mexico in 1984.

[thekingprincess]

Angel

A light in the darkness and darkness itself

😈❤️‍🔥🪬🪽

[lionfloss]

shal.matharu

[mudwerks]

(via Ultrasonic bracelet jams the microphones around you | Engadget)

University of Chicago researchers have built an experimental bracelet that uses ultrasonic broadcasts from 24 speakers to jam most microphones, no matter what direction they're in. The gadget takes advantage of non-linearities in its built-in amplifier to 'leak' ultrasonic noise into the audible range and render recordings useless.

[antinote]

Vintage Telefunken ELA M 251 E, 1950′s

[2nd-rate-film-school]

Hey! Im making a short-film and even though I don't have a shotgun mic, I have a condenser. I know its not recommendable but could I use the condenser as a shotgun mic? What should I do?

Hi Anon!

A condenser is very different from a shotgun mic in the way it picks up sound.

Condensers tend to be omni-directional, meaning they pick up sound all the way around the mic. In contrast, Shotgun mics are very directional and only pick up sound where they are pointing. Directional mics are extremely helpful when filming because they don’t pick up the unwanted background noises. An omni-directional mic will pick up everything.

That’s not to say you can’t use it, but you have to be aware of it’s limitations.

Keep the condenser hidden, but as close to the subject as possible.

I wouldn’t try and move with it because it will most likely pick up sound from whatever it is mounted on.

Scope out your locations to evaluate the ambient noise. Try to find a place as quiet as possible. Indoor locations are preferable.

I hope this helps!

Jules

[sparrowlegspeakers]

What is an Omni-Directional Speaker & why is Sparrowlegs doing DIY builds?

Omnidirectional speakers use a method of dispersing sound energy in a 360 degree spray, allowing the sound energy to be uniform with its environment.

Unlike a conventional cone driver the reflections from the sidewalls will be identical to the signal that's reaching you directly.

However their are many forms of omnidirectional setups, But my interested is the truest one of all. One which uses a spherical diaphragm that radiates sound vertically. By its design compared with the standard speaker, it changes the vectors of the frequency wave launch by 90 degrees.

The voice-coil is mounted at the bottom and when a signal is applied, it bends the segments, producing omnidirectional sound. 

Why I am building them? Because it’s addictive! Making a speaker enclosure is not making a speaker, rather, it is matching a speaker drive to an enclosure to hopefully produce a harmonious union of the two. Though this is a complex matter, there is nothing quiet like saying I built that - “FROM SCRATCH!”

I will admit, there are many flaws with this design, namely being inefficient, but all is forgiven, having sound radiating in 360 degree is a truly wonderful experience!