The matter that supports the sound is called the medium. Sound propagates as waves of alternating pressure, causing local regions of compression and rarefaction. Particles in the medium are displaced by the wave and oscillate. The scientific study of the absorption and reflection of sound waves is called acoustics.
Bussero ([bùssero], Büser ['byser] nel dialetto locale) è un comune di 8.491 abitanti della provincia di Milano. Sul territorio comunale sorge una fermata della linea 2 della Metropolitana Milanese, che la collega con Milano.Questo comune é attraversato dal naviglio Martesana.
45°32--N 9°22--E
Dal bosso, arbusto sempreverde, peraltro all'origine di un diffuso cognome lombardo, deriva il nome dell'isediamento, tanto antico che nel 1906 si rinvenne un sarcofago femminile romano. Comparso sulle topografie della pianura a oriente di Milano fin dall'852, circa tre secoli più tardi Bussero diede nome a una famiglia di spicco, che nel capoluogo lombardo avrebbe fondato l'ospedale di San Barnaba (con Goffredo da Bussero, parente e omonimo del più noto storico, nel 1145) e della quale fu membro Pagano, podestà nel 1212.
A disc jockey or DJ is a person who selects and plays prerecorded music for an audience.
There are several types of disc jockeys. Radio DJs introduce and play music that is broadcast on AM, FM, shortwave or digital radio stations. Club DJs select and play music in a bar, club, disco, a rave, or even a stadium. Hip hop disc jockeys select, play and create music with multiple turntables, often to back up one or more MCs. In reggae, the disc jockey (deejay) is a vocalist who raps, toasts, beatboxes or chats over pre-recorded rhythm tracks while the individual choosing and playing them is referred to as a selector. [1] Mobile disc jockeys travel with portable sound systems and play at a variety of events.
In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the conversion of a sound wave (a continuous-time signal) to a sequence of samples (a discrete-time signal).
A sample refers to a value or set of values at a point in time and/or space.
A sampler is a subsystem or operator that extracts samples from continuous signal. A theoretical ideal sampler multiplies a continuous signal with a Dirac comb. This multiplication "picks out" values but the result is still continuous-valued. If this signal is then discretized (i.e., converted into a sequence) and quantized along all dimensions it becomes a discrete signal.
A Synthesizer is generally any kind of electronic musical instrument, or electronic device capable of producing or manipulating audio tones, such as musical notes, through audio signal processing. The term originates from the Greek syntithetai synthesis (--??--?--------? --??------??).
MIDI (Musical Instrument Digital Interface; IPA: /--m?di/) is an industry-standard protocol that enables electronic musical instruments, computers and other equipment to communicate, control and synchronize with each other.
Note names and MIDI note numbers. Note names and MIDI note numbers.
MIDI does not transmit an audio signal or media — it simply transmits digital data "event messages" such as the pitch and intensity of musical notes to play, control signals for parameters such as volume, vibrato and panning, cues and clock signals to set the tempo. As an electronic protocol, it is notable for its success, both in its widespread adoption throughout the industry, and in remaining essentially unchanged in the face of technological developments since its introduction in 1983.
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