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What (who) is acoustical signal - definition

BRANCH OF ENGINEERING DEALING WITH SOUND AND VIBRATION

Acoustical Engineering; Electroacoustics; Acoustic engineering; Acoustic Engineering; Environmental acoustics; Electroacoustics (acoustical engineering); Acoustical engineer; Acoustic engineer; Subdisciplines of acoustical engineering

Signalling

VARYING PHYSICAL QUANTITY THAT CONVEYS INFORMATION

Electrical signal; Signalling; Signaling; Weak signals; Signal (signal processing); Signalling system; Signal system; Signal systems; Signal (information theory); Signal (circuit theory); Signals; SIGNAL; Signal (electronics); Signals and systems; Electrical Signal; Signal (electrical engineering); Radio frequency signal

·- of Signal.

Signal

VARYING PHYSICAL QUANTITY THAT CONVEYS INFORMATION

Electrical signal; Signalling; Signaling; Weak signals; Signal (signal processing); Signalling system; Signal system; Signal systems; Signal (information theory); Signal (circuit theory); Signals; SIGNAL; Signal (electronics); Signals and systems; Electrical Signal; Signal (electrical engineering); Radio frequency signal

In signal processing, a signal is a function that conveys information about a phenomenon. Any quantity that can vary over space or time can be used as a signal to share messages between observers.

https://en.wikipedia.org/wiki/Signal

Signal

VARYING PHYSICAL QUANTITY THAT CONVEYS INFORMATION

Electrical signal; Signalling; Signaling; Weak signals; Signal (signal processing); Signalling system; Signal system; Signal systems; Signal (information theory); Signal (circuit theory); Signals; SIGNAL; Signal (electronics); Signals and systems; Electrical Signal; Signal (electrical engineering); Radio frequency signal

·noun A token; an indication; a foreshadowing; a sign.

II. Signal ·vt To communicate by signals; as, to signal orders.

III. Signal ·vt To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor.

IV. Signal ·adj Of or pertaining to signals, or the use of signals in conveying information; as, a signal flag or officer.

V. Signal ·adj Noticeable; distinguished from what is ordinary; eminent; remarkable; memorable; as, a signal exploit; a signal service; a signal act of benevolence.

VI. Signal ·noun A sign made for the purpose of giving notice to a person of some occurence, command, or danger; also, a sign, event, or watchword, which has been agreed upon as the occasion of concerted action.

Wikipedia

Acoustical engineering

Acoustical engineering (also known as acoustic engineering) is the branch of engineering dealing with sound and vibration. It includes the application of acoustics, the science of sound and vibration, in technology. Acoustical engineers are typically concerned with the design, analysis and control of sound.

One goal of acoustical engineering can be the reduction of unwanted noise, which is referred to as noise control. Unwanted noise can have significant impacts on animal and human health and well-being, reduce attainment by students in schools, and cause hearing loss. Noise control principles are implemented into technology and design in a variety of ways, including control by redesigning sound sources, the design of noise barriers, sound absorbers, suppressors, and buffer zones, and the use of hearing protection (earmuffs or earplugs).

Besides noise control, acoustical engineering also covers positive uses of sound, such as the use of ultrasound in medicine, programming digital synthesizers, designing concert halls to enhance the sound of orchestras and specifying railway station sound systems so that announcements are intelligible.

https://en.wikipedia.org/wiki/Acoustical engineering

Examples of use of acoustical signal

1. Ultrasone claims that "most headphone drivers produce low–frequency magnetic fields as they convert an electric signal into an acoustical signal you hear as music." To combat this exposure to a magnetic field, Ultrasone claims to utilize a special type of "MU metal shielding" that purports to "reduce radiation by up to '8 percent compared to current headphones." In terms of sound quality and performance, My Morning Jacket‘s new "Evil Urges" CD made a strong impression over the HFI–2200s.