Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Loudspeaker> ?p ?o }
- Loudspeaker abstract "A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; a device which converts an electrical audio signal into a corresponding sound. The first primitive loudspeakers were invented during the development of telephone systems in the late 1800s, but electronic amplification by vacuum tube beginning around 1912 made loudspeakers truly practical. By the 1920s they were used in radios, phonographs, public address systems and theatre sound systems for talking motion pictures.The most widely-used type of speaker today is the dynamic speaker, invented in 1925 by Edward W. Kellogg and Chester W. Rice. The dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound from an electrical signal. When an alternating current electrical audio signal input is applied through the voice coil, a coil of wire suspended in a circular gap between the poles of a permanent magnet, the coil is forced to move rapidly back and forth due to Faraday's law of induction, which causes a diaphragm (usually conically shaped) attached to the coil to move back and forth, pushing on the air to create sound waves. Besides this most common method, there are several alternative technologies that can be used to convert an electrical signal into sound. The sound source (e.g., a sound recording or a microphone) must be amplified with an amplifier before the signal is sent to the speaker.Speakers are typically housed in an enclosure which is often a rectangular or square box made of wood or sometimes plastic. Where high fidelity reproduction of sound is required, multiple loudspeakers may be mounted in the same enclosure, each reproducing a part of the audible frequency range (picture at right). In this case the individual speakers are referred to as "drivers" and the entire unit is called a loudspeaker. Miniature loudspeakers are found in devices such as radio and TV receivers, and many forms of music players. Larger loudspeaker systems are used for music, sound reinforcement in theatres and concerts, and in public address systems.".
- Loudspeaker thumbnail Electrodynamic-loudspeaker.png?width=300.
- Loudspeaker wikiPageExternalLink www.almainternational.org.
- Loudspeaker wikiPageExternalLink shearer.htm.
- Loudspeaker wikiPageExternalLink aar06pu1.pdf.
- Loudspeaker wikiPageExternalLink 05_speakers.html.
- Loudspeaker wikiPageExternalLink calculator-efficiency.htm.
- Loudspeaker wikiPageID "45871".
- Loudspeaker wikiPageLength "94877".
- Loudspeaker wikiPageOutDegree "271".
- Loudspeaker wikiPageRevisionID "683434478".
- Loudspeaker wikiPageWikiLink 1939_New_York_Worlds_Fair.
- Loudspeaker wikiPageWikiLink Absorption_(acoustics).
- Loudspeaker wikiPageWikiLink Acoustic_Research.
- Loudspeaker wikiPageWikiLink Acoustic_impedance.
- Loudspeaker wikiPageWikiLink Acoustic_resonance.
- Loudspeaker wikiPageWikiLink Acoustic_suspension.
- Loudspeaker wikiPageWikiLink Acoustical_engineering.
- Loudspeaker wikiPageWikiLink Active_loudspeaker.
- Loudspeaker wikiPageWikiLink Alexander_Graham_Bell.
- Loudspeaker wikiPageWikiLink Aliasing.
- Loudspeaker wikiPageWikiLink Alnico.
- Loudspeaker wikiPageWikiLink Altec_Lansing.
- Loudspeaker wikiPageWikiLink Altec_Lansing_Duplex.
- Loudspeaker wikiPageWikiLink Aluminium.
- Loudspeaker wikiPageWikiLink Aluminum.
- Loudspeaker wikiPageWikiLink Analog-to-digital_converter.
- Loudspeaker wikiPageWikiLink Analog_digital_conversion.
- Loudspeaker wikiPageWikiLink Anechoic_chamber.
- Loudspeaker wikiPageWikiLink Asphalt.
- Loudspeaker wikiPageWikiLink Association_of_Loudspeaker_Manufacturing_&_Acoustics_International.
- Loudspeaker wikiPageWikiLink Audio_crossover.
- Loudspeaker wikiPageWikiLink Audio_power.
- Loudspeaker wikiPageWikiLink Audio_power_amplifier.
- Loudspeaker wikiPageWikiLink Audio_signal.
- Loudspeaker wikiPageWikiLink Audiophile.
- Loudspeaker wikiPageWikiLink Bakelite.
- Loudspeaker wikiPageWikiLink Bamboo.
- Loudspeaker wikiPageWikiLink Bandwidth_extension.
- Loudspeaker wikiPageWikiLink Bass_reflex.
- Loudspeaker wikiPageWikiLink Bell_Labs.
- Loudspeaker wikiPageWikiLink Bessel_function.
- Loudspeaker wikiPageWikiLink Binding_post.
- Loudspeaker wikiPageWikiLink Bit.
- Loudspeaker wikiPageWikiLink Bitumen.
- Loudspeaker wikiPageWikiLink Bose_Corporation.
- Loudspeaker wikiPageWikiLink Cabasse_(company).
- Loudspeaker wikiPageWikiLink Cambridge,_Massachusetts.
- Loudspeaker wikiPageWikiLink Capacitor.
- Loudspeaker wikiPageWikiLink Carbon-fiber-reinforced_polymer.
- Loudspeaker wikiPageWikiLink Carbon_fiber.
- Loudspeaker wikiPageWikiLink Carbon_nanotube.
- Loudspeaker wikiPageWikiLink Casting_(metalworking).
- Loudspeaker wikiPageWikiLink Category:1924_introductions.
- Loudspeaker wikiPageWikiLink Category:Loudspeakers.
- Loudspeaker wikiPageWikiLink Ceramic.
- Loudspeaker wikiPageWikiLink Charles_Algernon_Parsons.
- Loudspeaker wikiPageWikiLink Chester_W._Rice.
- Loudspeaker wikiPageWikiLink Chester_Williams_Rice.
- Loudspeaker wikiPageWikiLink China.
- Loudspeaker wikiPageWikiLink Cinema_(place).
- Loudspeaker wikiPageWikiLink Compression_driver.
- Loudspeaker wikiPageWikiLink Computer_speaker.
- Loudspeaker wikiPageWikiLink Copper.
- Loudspeaker wikiPageWikiLink Current_(electricity).
- Loudspeaker wikiPageWikiLink DBSPL.
- Loudspeaker wikiPageWikiLink Damping_factor.
- Loudspeaker wikiPageWikiLink Decibel.
- Loudspeaker wikiPageWikiLink Diaphragm_(acoustics).
- Loudspeaker wikiPageWikiLink Diffraction.
- Loudspeaker wikiPageWikiLink Digital_speaker.
- Loudspeaker wikiPageWikiLink Digital_speakers.
- Loudspeaker wikiPageWikiLink Directional_sound.
- Loudspeaker wikiPageWikiLink Distortion.
- Loudspeaker wikiPageWikiLink Douglas_Shearer.
- Loudspeaker wikiPageWikiLink Dust_cap.
- Loudspeaker wikiPageWikiLink Dynamic_microphone.
- Loudspeaker wikiPageWikiLink Earphones.
- Loudspeaker wikiPageWikiLink Echo_cancellation.
- Loudspeaker wikiPageWikiLink Echo_suppression_and_cancellation.
- Loudspeaker wikiPageWikiLink Edgar_Villchur.
- Loudspeaker wikiPageWikiLink Edward_W._Kellogg.
- Loudspeaker wikiPageWikiLink Edwin_Pridham.
- Loudspeaker wikiPageWikiLink Electric_current.
- Loudspeaker wikiPageWikiLink Electric_field.
- Loudspeaker wikiPageWikiLink Electric_power.
- Loudspeaker wikiPageWikiLink Electrical_impedance.
- Loudspeaker wikiPageWikiLink Electrical_inductance.
- Loudspeaker wikiPageWikiLink Electrical_polarity.
- Loudspeaker wikiPageWikiLink Electrical_power.
- Loudspeaker wikiPageWikiLink Electrical_reactance.
- Loudspeaker wikiPageWikiLink Electrodynamic_loudspeaker.
- Loudspeaker wikiPageWikiLink Electromagnet.
- Loudspeaker wikiPageWikiLink Electronics.
- Loudspeaker wikiPageWikiLink Electrostatic_loudspeaker.
- Loudspeaker wikiPageWikiLink Ernst_Werner_von_Siemens.
- Loudspeaker wikiPageWikiLink Faraday_loop.
- Loudspeaker wikiPageWikiLink Faradays_law_of_induction.
- Loudspeaker wikiPageWikiLink FeONIC.
- Loudspeaker wikiPageWikiLink Ferrite_(magnet).