Binaural recording is a method of recording sound that uses two microphones, arranged with the intent to create a 3-D stereo sound sensation for the listener of actually being in the room with the performers or instruments. This effect is often created using a technique known as dummy head recording, wherein a mannequin head is fitted with a microphone in each ear. Binaural recording is intended for replay using headphones and will not translate properly over stereo speakers. This idea of a three-dimensional or "internal" form of sound has also translated into useful advancement of technology in many things such as stethoscopes creating "in-head" acoustics and IMAX movies being able to create a three-dimensional acoustic experience.
A head-related transfer function (HRTF), also known as anatomical transfer function (ATF), or a head shadow, is a response that characterizes how an ear receives a sound from a point in space. As sound strikes the listener, the size and shape of the head, ears, ear canal, density of the head, size and shape of nasal and oral cavities, all transform the sound and affect how it is perceived, boosting some frequencies and attenuating others. Generally speaking, the HRTF boosts frequencies from 2–5 kHz with a primary resonance of +17 dB at 2,700 Hz. But the response curve is more complex than a single bump, affects a broad frequency spectrum, and varies significantly from person to person.
THX is a suite of high fidelity audiovisual reproduction standards for movie theaters, screening rooms, home theaters, computer speakers, video game consoles, car audio systems, and video games. The THX trailer that precedes movies is based on the Deep Note, with a distinctive glissando up from a rumbling low pitch.
Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby to hear. Headphones are also known as earphones or, colloquially, cans. Circumaural and supra-aural headphones use a band over the top of the head to hold the speakers in place. Another type, known as earbuds or earpieces consist of individual units that plug into the user's ear canal. A third type are bone conduction headphones, which typically wrap around the back of the head and rest in front of the ear canal, leaving the ear canal open. In the context of telecommunication, a headset is a combination of headphone and microphone.
Sennheiser electronic GmbH & Co. KG is a German privately held audio company specializing in the design and production of a wide range of high-fidelity products, including microphones, headphones, and headsets for personal, professional, and business applications. The company's head office is located in Wedemark, near Hanover, and the company is represented in more than 50 countries worldwide.
Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in commercial airline headsets with the technology becoming available in the late 1980s. The technology is also used in road vehicles, mobile telephones, earbuds, and headphones.
3D audio effects are a group of sound effects that manipulate the sound produced by stereo speakers, surround-sound speakers, speaker-arrays, or headphones. This frequently involves the virtual placement of sound sources anywhere in three-dimensional space, including behind, above or below the listener.
Sensaura, a division of Creative Technology, was a company that provided 3D audio effect technology for the interactive entertainment industry. Sensaura technology was shipped on more than 24 million game consoles and 150 million PCs . Formed in 1991, Sensaura developed a range of technologies for incorporating 3D audio into PC's and consoles.
FMOD is a proprietary sound effects engine and authoring tool for video games and applications developed by Firelight Technologies. It is able to play and mix sounds of diverse formats on many operating systems.
Orb was a freeware streaming software that enabled users to remotely access all their personal digital media files including pictures, music, videos and television. It could be used from any Internet-enabled device, including laptops, pocket PC, smartphones, PS3, Xbox 360 and Wii video game consoles.
Ambiophonics is a method in the public domain that employs digital signal processing (DSP) and two loudspeakers directly in front of the listener in order to improve reproduction of stereophonic and 5.1 surround sound for music, movies, and games in home theaters, gaming PCs, workstations, or studio monitoring applications. First implemented using mechanical means in 1986, today a number of hardware and VST plug-in makers offer Ambiophonic DSP. Ambiophonics eliminates crosstalk inherent in the conventional stereo triangle speaker placement, and thereby generates a speaker-binaural soundfield that emulates headphone-binaural sound, and creates for the listener improved perception of reality of recorded auditory scenes. A second speaker pair can be added in back in order to enable 360° surround sound reproduction. Additional surround speakers may be used for hall ambience, including height, if desired.
OnLive was a provider of cloud virtualization technologies based in Mountain View, California. OnLive's flagship product was its cloud gaming service, which allowed subscribers to rent or demo computer games without installing them. Games were delivered as streaming video rendered by the service's servers, rather than running on the local device. This setup allowed the games to run on computers and devices that would normally be unable to run them due to insufficient hardware. OnLive also enabled other features such as the ability for players to record gameplay and to spectate.
Beats Electronics LLC is an American consumer audio products manufacturer headquartered in Culver City, California. The company was founded by music producer Dr. Dre and record company executive Jimmy Iovine. Since 2014, it has been an Apple subsidiary.
Dolby Atmos is a surround-sound technology developed by Dolby Laboratories. It expands on existing surround sound systems by adding height channels, allowing sounds to be interpreted as three-dimensional objects with neither horizontal nor vertical limitations. Following the release of Atmos for the cinema market, a variety of consumer technologies have been released under the Atmos brand, using in-ceiling and up-firing speakers.
ASUSTeK Computer Inc. is a Taiwanese multinational computer, phone hardware and electronics manufacturer headquartered in Beitou District, Taipei, Taiwan. Its products include desktop computers, laptops, netbooks, mobile phones, networking equipment, monitors, wi-fi routers, projectors, motherboards, graphics cards, optical storage, multimedia products, peripherals, wearables, servers, workstations and tablet PCs. The company is also an original equipment manufacturer (OEM).
Scaleform GFx is a discontinued game development middleware package, a vector graphics rendering engine used to display Adobe Flash-based user interfaces and HUDs for video games. In March 2011, Autodesk acquired Scaleform Corporation and Scaleform GFx became part of the Autodesk Gameware line of middleware. On July 12, 2018, Autodesk discontinued Scaleform GFx, and it is no longer available for purchase.
Hearables or smart headphones or earbuds are electronic in-ear devices designed for multiple purposes. The category is split between hearables for hearing health, and hearables for other applications.
Bragi is a German technology company headquartered in Munich, Germany, that designs, develops and sells wireless smart earphones; the Bragi OS, the operating system for next-generation computing platforms; and the Bragi App for smartphones.
Nura was a consumer electronics company based in Melbourne, Australia, that designed and manufactured headphones with personalized sound technology. Nura's proprietary technology automatically measures the user's hearing sensitivities to different frequencies by monitoring sounds generated from the inner ear. This hearing measurement process takes 1–2 minutes. The headphones then adapt their frequency response to the user's hearing, allowing them to hear more detail when listening to music.
In sound technology, personal sound refers to a range of software solutions that customize an audio device's sound output to match the listener's unique hearing sensitivities. The technologies aim to optimize the sound quality in the audio device to ensure they best fit the hearing perception of each unique listener.
