All articles starting with S
44,216 articles
Sound transmission class
Sound transmission class (STC) is a single-number laboratory rating, calculated under ASTM E413, of how well a wall, floor, door, or window assembly blocks airborne sound such as speech.
Sound United
Sound United is an American consumer audio company founded in 2013, acquired by Masimo in 2022 and by HARMAN in 2025, whose brands include Bowers & Wilkins, Denon, and Polk Audio.
Sound Ventures
Sound Ventures is a Beverly Hills venture capital firm led by Ashton Kutcher, Guy Oseary, and Effie Epstein, known for its 2023 AI fund backing OpenAI and Anthropic.
Sound-absorbing materials
Sound-absorbing materials dissipate acoustic energy as heat through viscous friction in narrow pores, covering porous absorbers, resonant panel and Helmholtz absorbers, and how absorption is measured and rated.
Sound! Euphonium (響け！ユーフォニアム)
Sound! Euphonium (響け！ユーフォニアム, Hibike! Euphonium): Kyoto Animation's concert band youth anime adapted from Ayano Takeda's novel, airing 2015, 2016, and 2024 (NHK E-tele), with theatrical films and a 2026 two-part Final Movement finale, set in Uji, Kyoto.
Soundararaja (சௌந்தரராஜா)
Soundararaja (சௌந்தரராஜா), Tamil actor-producer born 1983 in Usilampatti, ex-engineer; villain in Sundarapandian (2012), Jigarthanda (2014), Bigil; TVK associate and Madurai Touring Talkies founder.
Soundariya Nanjundan
Soundariya Nanjundan (born 1995, Bengaluru) is an Indian actress in Tamil film, web series, and reality TV, known for Vera Maari Office, Darbar, and as Bigg Boss Tamil 8 runner-up.
Soundarya
Soundarya (సౌందర్య), the screen name of Sowmya Satyanarayana, was an Indian actress in Telugu cinema who made over 85 films before dying in a plane crash in 2004.
Soundarya Rajinikanth (சௌந்தர்யா ரஜினிகாந்த்)
Soundarya Rajinikanth (Shaku Bai Rao Gaikwad), born 1984, is an Indian Tamil film director, producer, and graphics designer, daughter of Rajinikanth; she directed Kochadaiiyaan (2014), India's first photorealistic motion-capture film, and VIP 2.
Soundbar
A soundbar is a long, narrow loudspeaker enclosure placed below or beside a television to improve on thin TV speakers, ranging from stereo bars to Dolby Atmos systems.
Soundcity TV
Soundcity TV, also known as Soundcity Africa, is a Lagos-based pan-African urban music and lifestyle channel owned by Consolidated Media Associates, broadcasting around the clock across Africa.
SoundCloud
SoundCloud is an audio platform founded in Berlin in 2007 where creators upload, share, and stream sound, hosting more than 400 million tracks from over 40 million artists.
SoundCloud indie
SoundCloud indie is a guitar-led music scene on the SoundCloud platform blending alt-rock with hip-hop and lo-fi bedroom production; artists include bunii, Ebril, yiru, and kid moon, and the scene grew over 2.5 times in 2025.
Soundcore (audio brand)
Soundcore (声阔) is the audio brand of Anker Innovations, a Chinese consumer-electronics group founded in 2011, selling wireless earbuds, headphones, and speakers in more than 50 countries.
Soundcore Capital Partners
Soundcore Capital Partners is a New York-based private equity firm founded by Jarrett Turner in 2015 that makes buy-and-build investments in lower middle-market businesses in the United States and Canada.
Sounder (film)
Sounder (1972) is Martin Ritt's drama, adapted by Lonne Elder III from William H. Armstrong's Newbery-winning novella, about a Louisiana sharecropper family; starring Cicely Tyson, Paul Winfield, and Kevin Hooks, it earned four Oscar nominations and joined the National Film Registry in 2021.
Soundex
Soundex is a phonetic algorithm that converts names, especially surnames, into letter-plus-three-digit codes by English sound, patented in 1918 and used to index United States censuses.
SoundFont
SoundFont is a sample-based synthesis file format developed by E-mu Systems and Creative Technology, introduced with the Sound Blaster AWE32 in 1994; its current version, 2.04, dates from 2002.
Soundgarden
Soundgarden is an American rock band formed in Seattle in 1984, fronted by Chris Cornell. Among the first grunge bands, it peaked with Superunknown in 1994.
Soundgarden discography
Soundgarden discography: catalog of the Seattle grunge band, six studio albums from Ultramega OK (1988) to King Animal (2012), plus Screaming Life EP, Superunknown's Billboard No. 1, and a pending final album.
SoundHound AI
SoundHound AI, Inc. is a Santa Clara, California, voice and agentic AI company that builds speech recognition and conversational AI products for automotive, restaurant, and enterprise customers.
Sounding reference signal
The sounding reference signal (SRS) is an uplink pilot signal a user equipment transmits so the base station can measure the radio channel in LTE and 5G NR.
Sounding rocket
A sounding rocket, or research rocket, is a small instrument-carrying rocket that flies a suborbital parabolic path to take scientific measurements in space or the upper atmosphere.
Sounding rocket payload instrumentation
Sounding rocket payload instrumentation is the recoverable, instrumented package flown above the atmosphere on suborbital research rockets, carrying experiments for astronomy and microgravity research with telemetry, attitude control, and parachute recovery systems.
Sounding the Seventh Trumpet
Sounding the Seventh Trumpet, also shortened to Seventh Trumpet, is Avenged Sevenfold's 2001 metalcore debut album on Good Life Recordings: 13 tracks, 52 minutes, raw production, with 'Warmness on the Soul' as its piano ballad.
Soundness
Soundness (logical soundness) is the property of a proof system that proves only what is semantically valid: derivable conclusions hold in every model of the premises.
Soundness and completeness
Soundness and completeness are the properties linking a formal proof system to its semantics: what is provable is valid, and what is valid is provable.
SoundOn
SoundOn is a music distribution and marketing platform owned by TikTok and ByteDance, launched in 2022, which lets independent artists upload to TikTok and streaming services while keeping ownership of their recordings.
Soundproofing
Soundproofing, also called sound insulation, is the set of materials and techniques used in building construction to reduce the transmission of sound between spaces or from outdoors.
Soundrenaline
Soundrenaline is an Indonesian rock and alternative music festival first held in Jakarta in 2002, later based in Bali and known for crowds above 100,000.