Another method of conveying an analogue signal is to use modulation. In this, some base carrier signal has one of its properties altered: amplitude modulation (AM) involves altering the amplitude of a sinusoidal voltage waveform by the source information, frequency modulation (FM) changes the frequency. Other techniques, such as phase modulation or changing the phase of the carrier signal, are also used.
Mechanical, pneumatic, hydraulic, and other systems may also use analogue signals.
An analogue signal uses some attribute of the medium to convey the signal's information. For example, an aneroid barometer uses the angular position of a needle as the signal to convey the information of changes in atmospheric pressure. Electrical signals may represent information by changing their voltage, current, frequency, or total charge. Information is converted from some other physical form (such as sound, light, temperature, pressure, position) to an electrical signal by a transducer which converts one type of energy into another (e.g. a microphone).
In an analogue sound recording, the variation in pressure of a sound striking a microphone creates a corresponding variation in the current passing through it or voltage across it. An increase in the volume of the sound causes the fluctuation of the current or voltage to increase proportionally while keeping the same waveform or shape.
These products are sometimes referred to as "analogue pizza cheese". They are used on some commercially produced pizzas. They may be formulated for processing with basic cheese-making equipment, but without the additional equipment and processing that mozzarella cheese requires, such as the processes of mixing and molding. They tend to have a soft texture and once melted, may have a slightly "stringy" quality when pulled or bitten into. They may lack in a fusion, or melt together when cooked. It has been stated that pizza cheese appears to be the leading type of cheese analogue produced globally. In 1987 it was asserted that—at that time—each year in the United States over 700 million frozen pizzas were sold, three quarters of which contain cheese substitutes.
Since the information is encoded differently in analogue and digital electronics, the way they process a signal is consequently different. All operations that can be performed on an analogue signal such as amplification, filtering, limiting, and others, can also be duplicated in the digital domain. Every digital circuit is also an analogue circuit, in that the behaviour of any digital circuit can be explained using the rules of analogue circuits.
Another way to store recordings on a non-analogue media is through the use of a digital video recorder (DVR). Such a device is similar in functionality to a PC with a capture card and appropriate video recording software. Unlike PCs, most DVRs designed for CCTV purposes are embedded devices that require less maintenance and simpler setup than a PC-based solution, for a medium to a large number of analogue cameras.
Analogue television transmissions from Winter Hill ceased officially early in the morning of 2 December 2009. Since then the site has carried only digital terrestrial television transmissions.
Analogue television signals are no longer broadcast from Sutton Coldfield as of 21 September 2011.
Analogue television was switched off during April 2011; BBC Two analogue was switched off on 6 April and the remaining four on 20 April.
Analogue signals can also be converted into a digital signal to enable the recordings to be stored on a PC as digital recordings. In that case the analogue video camera must be plugged directly into a video capture card in the computer, and the card then converts the analogue signal to digital. These cards are relatively cheap, but inevitably the resulting digital signals are compressed 5:1 (MPEG compression) in order for the video recordings to be saved on a continuous basis.
Analogue is the eighth studio album by the Norwegian band A-ha, released in 2005. It is aha's first album on Polydor Records (Universal), having previously been signed to Warner Music. Four singles were also released from this record. The album's second single, "Analogue (All I Want)" became the group's first top 10 hit on the UK Singles Chart since "Stay on These Roads" (1988). The album reached #24 in the UK and got silver certification there.
Analogue Productions initially produced its records through record pressing plants in Los Angeles, California, and in Germany. However in 2011, Kassem launched his own record pressing plant, Quality Record Pressings. QRP sought to improve premier audiophile pressings, including introducing innovations never before tried in the record pressing industry. To date, Analogue Productions has released more than 300 previously recorded albums from well-known historic record labels, including Fantasy Records, Blue Note Records, Impulse! Records, Verve Records, Prestige Records and Columbia Records.
The Analogue Nt is an aftermarket Nintendo Entertainment System and Famicom designed and manufactured by Seattle-based company Analogue Inc. Designed around the original Nintendo CPU and PPU, the Analogue Nt is one of only a small number of aftermarket NES and Famicom systems that are not designed using emulation, since the Analogue Nt uses the original Nintendo CPU and PPU. The goal of the system was to build a perfect, no-compromises aftermarket NES and Famicom. The default model was released with RGB (RGB, Component, S-Video and Composite) video outputs only, with an additional "add-on" for 1080p HDMI output and a plethora of other digital features. The Analogue Nt's enclosure is solid aluminium unibody enclosure manufactured from 6061 aluminium.
Since its inception, Clan Analogue has released over 30 albums directly with many more releases coming from collective members such as Deep Child, b(if)tek, Disco Stu, Artificial, Dark Network, Atone, Lunar Module, Carrier and Telemetry Orchestra through other labels. Its stated philosophy is: "as a social circuit board, Clan enables the building of networks by providing members with access to equipment, knowledge and advice, along with the opportunity to play live and co-produce music." The release schedule as busy now as it was in the 90's, continuing to release cutting edge electronic music, host events and foster a global community of artists involved in electronic music.
Clan Analogue was one part of a wider, thriving electronic music scene in the 90s & 00s in Australia alongside other underground electronic collectives and crews such as the Vibe Tribe, Frigid, Punos, Club Kooky and Elefant Traks.
Analogue was founded in 2011 by Christopher Taber. In April 2011, Analogue released the Analogue CMVS, a Neo Geo consolized Multi-Video-System handmade from solid wood. In November 2012, Analogue released the Analogue Arcade Stick, a Neo Geo arcade stick handmade from solid wood. In November 2014, Analogue released the Analogue Neo, a Neo Geo Consolized MVS system and two arcade sticks, combined into one, all-in-one system.
In digital electronics, because the information is quantized, as long as the signal stays inside a range of values, it represents the same information. In digital circuits the signal is regenerated at each logic gate, lessening or removing noise. In analogue circuits, signal loss can be regenerated with amplifiers. However, noise is cumulative throughout the system and the amplifier itself will add to the noise according to its noise figure.
Audio Analogue is a manufacturer of home audio equipment based in Monsummano Terme, PT, Italy. Established in 1995, they sell a wide range of CD players, amplifiers, and tuners. One of its most popular and well-reviewed products is its Puccini amplifier.
Can record straight to a video tape recorder which are able to record analogue signals as pictures. If the analogue signals are recorded to tape, then the tape must run at a very slow speed in order to operate continuously. This is because in order to allow a three-hour tape to run for 24 hours, it must be set to run on a slow time-lapse basis, usually about four frames per second. In one second, the camera scene can change dramatically. A person for example can have walked a distance of 1 meter, and therefore if the distance is divided into four parts, i.e. four frames or "snapshots" in time, then each frame invariably looks like a blur, unless the subject keeps relatively still.