Frequency Phone Cases - iPhone and Android
Description: Rendered on a deep dark background, this artwork presents four sine harmonics stacked above a square wave rebuilt from their sum, with the series f(x) = 4/π Σ sin(nx)/n for n = 1, 3, 5, 7. In 1822 Joseph Fourier showed that any periodic signal can be written as a sum of sines and cosines. Fourier analysis now underpins audio, image compression, telecommunications and much of modern engineering. Made for engineers, inventors and anyone who loves to understand how things work, it suits a workshop, office or study.
Fourier Series, a Square Wave Built from Sine Harmonics, Signal Processing Math Phone Case
by Science Design
$17 $23
Actually I’m Just Here To Hold The Frequency - Funny Introvert Quote Phone Case
by IslamTeeToTheJannah
$23
Description: In the mathematical universe, Bigfoot leaves no physical tracks, only a distinct frequency signature. Plotted on a custom-designed application using Fourier Transform epicycles, this royal blue and purple wireframe design is made for electrical engineers, RF specialists, and signal processing professionals.
Description: Tune into the ultimate nostalgic frequency! This electrifying retro radio station logo brings back the neon-soaked vibes of your favorite 80s open-world adventures. Perfect for retro gamers and synthwave junkies. Grab this tee and let the classic hits roll! ⚡📻🌴🚀
Retro 80s Virtual Radio Phone Case
by Fictional Ink Society: Retro Old School & Geek Fan Art
$23
Description: Celebrate the classic era of sound with this unique "Respect The Dial Tone" graphic design. Featuring bold, 3D metallic typography, elegant script lettering, and audio waveform details, this design is perfect for sound engineers, podcasters, vintage audio enthusiasts, and music producers.
Description: This Washington DC design features the text Liberty Noise and DC Frequency. A distressed eagle graphic flies over a street grid with bold yellow caution stripes and high-energy urban styling. Perfect for DC music fans, punk style lovers, streetwear collectors, and anyone who likes loud capital city artwork.
Description: Tune in to the Dead Radio. A vintage-inspired design built around the eerie atmosphere of forgotten broadcasts, static signals, midnight radio, and haunted transmissions. Perfect for fans of vintage horror, retro graphics, underground music, analog technology, and creepy old-school aesthetics.
Description: Outside Frequency blends raw fashion photography with underground music culture and distressed streetwear graphics. CRAZY ASSIYA CA-035 combines an oversized editorial identity, headphones, vinyl-inspired geometry and a signature yellow flower for a graphic built around individuality and personal rhythm.
Description: Show your love for coffee with this funny coffee cup frequency featuring a heartbeat-inspired design. Perfect for coffee lovers, caffeine enthusiasts, and anyone who starts the day with their favorite cup of coffee. A great gift for coffee drinkers, baristas, and espresso fans.
Description: Calm Waves in Color.. A calming blend of layered blue tones meets subtle texture in this minimalist abstract design. Inspired by ocean depth and analog noise, this piece balances serenity with visual rhythm. Perfect for lovers of clean aesthetics, gradient art, and modern graphic tees. Wear it like a quiet frequency.
Description: Turn up the volume and disrupt the norm with the "Guerrilla Waves" T-shirt, inspired by Rage Against the Machine's rebellious anthem. This design channels the energy of underground resistance, featuring bold stencil-style graphics with a high-contrast, street-art-inspired edge. The aggressive, chaotic patterns mixed with clean lines capture the raw power of breaking free from the system.
