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Loudspeaker with attached step-down transformer for use on a constant-voltage system. Constant-voltage speaker systems refer to networks of loudspeakers which are connected to an audio amplifier using step-up and step-down transformers to simplify impedance calculations and to minimize power loss over the speaker cables.
Because voice mode is not the typical use for a modem, many modems on the market have poor or buggy support for their voice modes. Characteristics of a good voice modem depend greatly upon the intended application, and include: Reliable operation. Many modems simply "lock up" or crash the host PC, though this is more common with Winmodems ...
A pneumatic amplifier was realised by using a sensitive valve, which required little force to operate, to modulate the flow of a stream of compressed air.The basic principle of the valves used in these devices was to pass the stream of compressed air through two partially overlapping combs.
Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus One hi-fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
Amplifiers for harder, heavier genres often use valve amplifiers (known as tube amplifiers in North America) also. Valve amplifiers are perceived by musicians and fans to have a warmer tone than those of transistor amps, particularly when overdriven (turned up to the level that the amplifier starts to clip or shear off the waveforms). Instead ...
A valve audio amplifier or vacuum tube audio amplifier is a valve amplifier used for sound reinforcement, sound recording and reproduction. Until the invention of solid state devices such as the transistor , all electronic amplification was produced by valve (tube) amplifiers.
A guitar pedal board comprising several effects pedals, including vintage Electro-Harmonix Big Muff and Vox wah-wah pedals from the 1960s and 70s. Vintage musical equipment is older music gear, including instruments, amplifiers and speakers, sound recording equipment and effects pedals, sought after, maintained and used by record producers, audio engineers and musicians who are interested in ...
Another type of normalization is based on a measure of loudness, wherein the gain is changed to bring the average loudness to a target level. This average may be approximate, such as a simple measurement of average power (e.g. RMS), or more accurate, such as a measure that addresses human perception e.g. that defined by EBU R128 and offered by ReplayGain, Sound Check and GoldWave.