Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit sample depth. Digital audio is also the name for the entire technology of sound recording and reproduction using audio signals that have been encoded in digital form. Following significant advances in digital audio technology during the 1970s and 1980s, it gradually replaced analog audio technology in many areas of audio engineering, record production and telecommunications in the 1990s and 2000s.
In electronics, a digital-to-analog converter is a system that converts a digital signal into an analog signal. An analog-to-digital converter (ADC) performs the reverse function.
The RCA connector is a type of electrical connector commonly used to carry audio and video signals. The name RCA derives from the company Radio Corporation of America, which introduced the design in the 1930s. The connector’s male plug and female jack are called RCA plug and RCA jack.
S-VHS (スーパー・ヴィエイチエス), the common initialism for Super VHS, is an improved version of the VHS standard for consumer-level video recording. Victor Company of Japan introduced S-VHS in Japan in April 1987, with their JVC-branded HR-S7000 VCR, and in certain overseas markets soon afterward. By the end of 1987, the first S-VHS VCR models from other competitors included Hitachi VT-2700A, Mitsubishi HS-423UR, Panasonic PV-S4764, RCA VPT-695HF, and Toshiba SV-950. It has been standardized as IEC 60774-3 and IEC 60774-4.
A boombox is a transistorized portable music player featuring one or two cassette tape recorder/players and AM/FM radio, generally with a carrying handle. Beginning in the mid 1980s, a CD player was often included. Sound is delivered through an amplifier and two or more integrated loudspeakers. A boombox is a device typically capable of receiving radio stations and playing recorded music. Many models are also capable of recording onto cassette tapes from radio and other sources. In the 1990s, some boomboxes were available with minidisc recorders and players. Designed for portability, boomboxes can be powered by batteries as well as by line current. The boombox was introduced to the American market during the late 1970s. The desire for louder and heavier bass led to bigger and heavier boxes; by the 1980s, some boomboxes had reached the size of a suitcase. Some larger boomboxes even contained vertically mounted record turntables. Most boomboxes were battery-operated, leading to extremely heavy, bulky boxes.
A hard disk recorder (HDR) is a system that uses a high-capacity hard disk to record digital audio or digital video. Hard disk recording systems represent an alternative to reel-to-reel audio tape recording and video tape recorders, and provide non-linear editing capabilities unavailable using tape recorders. Audio HDR systems, which can be standalone or computer-based, are typically combined with provisions for digital mixing and processing of the audio signal to produce a digital audio workstation (DAW).
Akai is a Hong Kong manufacturer of consumer electronics. It was founded as Akai Electric Company Ltd in Tokyo, Japan, in 1946.
In physics and chemistry, an ion is an atom or group of atoms with a net electric charge.
Kenwood is a Japanese brand of consumer electronics. It has been owned by JVCKenwood since October 2011, when Kenwood Corporation merged with JVC. Kenwood manufactures audio equipment such as AM/FM stereo receivers, cassette tape decks/recorders, amateur radio (ham) equipment, radios, cellular phones, speakers, and other consumer electronics.
Neuros Technology was a Chicago, Illinois–based company that produced a number of audio and video devices under the brand name Neuros. Founded by Joe Born in 2001 as a division of Digital Innovations, it previously operated under the name Neuros Audio. Like Digital Innovations, Neuros distinguished itself by its use of open-innovation and crowdsourcing techniques to bring products to market, as well as by its prominent use of open-source software and open-source hardware. In its development model, end users were involved throughout the product development process from reviewing initial concepts to beta testing initial product releases.
Alesis is an American company that designs and markets electronic musical instruments, audio processors, mixers, amplifiers, audio interfaces, recording equipment, drum machines, professional audio, and electronic percussion products. Based in Cumberland, Rhode Island, Alesis is an inMusic Brands company.
Denon is a Japanese electronics company dealing with audio equipment. The Denon brand came from a merger of Denki Onkyo and others in 1939, but it originally started as Nippon Chikuonki Shoukai in 1910 by Frederick Whitney Horn, an American entrepreneur.
Dual is a brand name of audio and video electronics.
Vestax Corporation was a Japanese musical instrument, turntable and audio equipment firm founded by Hidesato Shiino in 1977. The company started by designing and manufacturing electronic guitars. In the 1980s, Vestax produced multitrack recorders and later moved to making DJ mixers, professional turntables, CD players and signal processors. Debt troubles led to the company's bankruptcy at the end of 2014.
Luxman is a brand name of Japanese Luxman Corporation (ラックスマン株式会社) that manufactures luxury audio components. Luxman produces a variety of high-end audio products, including turntables, amplifiers, receivers, tape decks, CD players and speakers.
The Numark TTUSB is a belt-driven turntable with a USB audio interface. This allows the user to transfer music from a record onto a computer, from which it can then be burnt onto an audio CD. Introduced in December 2005, the TTUSB was the first turntable of its kind to have been released to the consumer market. A near-identical model called the iTTUSB was also manufactured under the Ion Audio brand name.
Technics is a Japanese brand name of Panasonic for audio equipment. Since 1965, Panasonic has produced a variety of hi-fi and audio products under the brand name, such as turntables, amplifiers, radio receivers, tape recorders, CD players, speakers, and digital pianos. Technics products were available for sale in various countries. The brand was originally conceived as a line of high-end audio equipment to compete against brands such as Nakamichi.
inMusic is an American enterprise that is the parent company for a family of brands of varying audio products used in the DJ, music production, live sound, musical instrument, pro audio, software, stage lighting, and consumer electronics industries. The company's corporate headquarters are located in Cumberland, Rhode Island, with additional offices in Canada, Germany, United Kingdom, Taiwan, Japan, and Bulgaria.
A professional audio store is a retail business that sells, and in many cases rents, sound reinforcement system equipment and PA system components used in music concerts, live shows, dance parties and speaking events. This equipment typically includes microphones, power amplifiers, electronic effects units, speaker enclosures, monitor speakers, subwoofers and audio consoles (mixers). Some professional audio stores also sell sound recording equipment, DJ equipment, lighting equipment used in nightclubs and concerts and video equipment used in events, such as video projectors and screens. Some professional audio stores rent "backline" equipment used in rock and pop shows, such as stage pianos and bass amplifiers. While professional audio stores typically focus on selling new merchandise, some stores also sell used equipment, which is often the equipment that the company has previously rented out for shows and events.
