Pressure-sensitive Microphone
Pressure sensitive may refer to: * Pressure-sensitive adhesive * Pressure-sensitive paper * Pressure-sensitive tape * Piezoelectric sensor * Pressure sensor * Pressure-sensitive microphone: see also proximity effect * the force with which a key is held after initial impact (see keyboard expression) * ''Pressure Sensitive Pressure sensitive may refer to: * Pressure-sensitive adhesive * Pressure-sensitive paper * Pressure-sensitive tape * Piezoelectric sensor * Pressure sensor * Pressure-sensitive microphone: see also proximity effect * the force with which a key ...

Pressure-sensitive Adhesive
Pressure-sensitive adhesive (PSA, self-adhesive, self-stick adhesive) is a type of nonreactive adhesive which forms a bond when pressure is applied to bond the adhesive with a surface. No solvent, water, or heat is needed to activate the adhesive. It is used in pressure-sensitive tapes, labels, glue dots, stickers, sticky note pads, automobile trim, and a wide variety of other products. As the name "pressure-sensitive" indicates, the degree of bond is influenced by the amount of pressure which is used to apply the adhesive to the surface. Surface factors such as smoothness, surface energy, removal of contaminants, etc. are also important to proper bonding. PSAs are usually designed to form a bond and hold properly at room temperatures. PSAs typically reduce or lose their tack at low temperatures and reduce their shear holding ability at high temperatures; special adhesives are made to function at high or low temperatures. Structural and pressure-sensitive adhesives Adhesives m ...
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Pressure-sensitive Paper
A label (as distinct from signage) is a piece of paper, plastic film, cloth, metal, or other material affixed to a container or product. Labels are most often affixed to packaging and containers using an adhesive, or sewing when affixed to clothing. Labels contain printed information or symbols about the product or item. Information printed directly on a container or article can also be considered labelling. Labels have many uses, including promotion and providing information on a product's origin, the manufacturer (e.g., brand name), use, safety, shelf-life and disposal, some or all of which may be governed by legislation such as that for food in the UK or United States. Methods of production and attachment to packaging are many and various and may also be subject to internationally recognised standards. In many countries, hazardous products such as poisons or flammable liquids must have a warning label. Uses Labels may be used for any combination of identification, inf ...
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Pressure-sensitive Tape
Pressure-sensitive tape or pressure-sensitive adhesive tape (PSA tape) is an adhesive tape that sticks when pressure is applied without the need for a solvent (such as water) or heat for activation. It is also known in various countries as self-stick tape, sticky tape, or just adhesive tape and tape, as well as genericized trademarks, such as '' Sellotape'', '' Durex (tape)'', '' Scotch tape'', etc. PSA tape consists of three components: *the tape itself, which often is cellophane, cellulose acetate, or polyvinyl chloride. Other materials include paper, plastic film, cloth, or metal foil coated onto a backing material such as paper, plastic film, cloth, or metal foil. *a pressure-sensitive adhesive. *release liner, which keeps the tape from sticking to itself. Some have layers of adhesives, primers, release agents, filaments, printing, etc. made for specific functions. It sticks without the need for a solvent such as water or heat for activation. By contrast, "gummed" ...
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Piezoelectric Sensor
A piezoelectric sensor is a device that uses the piezoelectric effect to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. The prefix ''piezo-'' is Greek for 'press' or 'squeeze'. Applications Piezoelectric sensors are versatile tools for the measurement of various processes. They are used for quality assurance, process control, and for research and development in many industries. Jacques and Pierre Curie discovered the piezoelectric effect in 1880, but only in the 1950s did manufacturers begin to use the piezoelectric effect in industrial sensing applications. Since then, this measuring principle has been increasingly used, and has become a mature technology with excellent inherent reliability. They have been successfully used in various applications, such as in medical, aerospace, nuclear instrumentation, and as a tilt sensor in consumer electronics or a pressure sensor in the touch pads of mobile phones ...
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Pressure Sensor
Pressure measurement is the measurement of an applied force by a fluid (liquid or gas) on a surface. Pressure is typically measured in units of force per unit of surface area. Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure and display pressure mechanically are called pressure gauges, vacuum gauges or compound gauges (vacuum & pressure). The widely used Bourdon gauge is a mechanical device, which both measures and indicates and is probably the best known type of gauge. A vacuum gauge is used to measure pressures lower than the ambient atmospheric pressure, which is set as the zero point, in negative values (for instance, −1 bar or −760 mmHg equals total vacuum). Most gauges measure pressure relative to atmospheric pressure as the zero point, so this form of reading is simply referred to as "gauge pressure". However, anything greater than total vacuum is technically a form of pressure. For very low pressu ...
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Pressure-sensitive Microphone
Pressure sensitive may refer to: * Pressure-sensitive adhesive * Pressure-sensitive paper * Pressure-sensitive tape * Piezoelectric sensor * Pressure sensor * Pressure-sensitive microphone: see also proximity effect * the force with which a key is held after initial impact (see keyboard expression) * ''Pressure Sensitive Pressure sensitive may refer to: * Pressure-sensitive adhesive * Pressure-sensitive paper * Pressure-sensitive tape * Piezoelectric sensor * Pressure sensor * Pressure-sensitive microphone: see also proximity effect * the force with which a key ...

Proximity Effect (audio)
The proximity effect in audio is an increase in bass or low frequency response when a sound source is close to a directional or cardioid microphone.Proximity Effect in Directional Microphones
Shure Pro Audio Technical Library Proximity effect is a change in the frequency response of a directional pattern microphone that results in an emphasis on lower frequencies. It is caused by the use of ports to create directional polar pickup patterns, so omni-directional microphones do not exhibit the effect (this is not necessarily true of the "omni" pattern on multipattern condenser mics, which create the "omni" pattern by summing two back-to-back cardioid capsules, which may or may not share a common backplate.) Proximity effect can be viewed in two way ...
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Keyboard Expression
Keyboard expression is the ability of a keyboard musical instrument to change tone or other qualities of the sound in response to velocity, pressure or other variations in how the performer depresses the keys of the musical keyboard. Expression types include: * ''Velocity sensitivity''—how fast the key is pressed * ''Aftertouch'', or ''pressure sensitivity'' — the amount of pressure on a key, once already held down * ''Displacement sensitivity''—distance that a key is pressed down Keyboard instruments offer a range of expression types. Acoustic pianos, such as upright and grand pianos, are velocity-sensitive—the faster the key strike, the harder the hammer hits the strings. Baroque-style clavichords and professional synthesizers are aftertouch-sensitive—applied force on the key after the initial strike produces effects such as vibrato or swells in volume. Tracker pipe organs and some electronic organs are displacement-sensitive—partly depressing a key produces a quie ...
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