0_Wizard
Hi, I have a guitar that produces sound acoustically!
An acoustic guitar is a guitar that produces sound acoustically—by transmitting the vibration of the strings to the air—as opposed to relying on electronic amplification (see electric guitar).
chosen_Acoustic_guitar_0
Acoustic guitar
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Acoustic guitar
An acoustic guitar is a guitar that produces sound acoustically—by transmitting the vibration of the strings to the air—as opposed to relying on electronic amplification (see electric guitar). The sound waves from the strings of an acoustic guitar resonate through the guitar's body, creating sound. This typically involves the use of a sound board and a sound box to strengthen the vibrations of the strings. The main source of sound in an acoustic guitar is the string, which is plucked or strummed with the finger or with a pick. The string vibrates at a necessary frequency and also creates many harmonics at various different frequencies.
Drum kit
A drum kit — also called a drum set, trap set, or simply drums — is a collection of drums and other percussion instruments, typically cymbals, which are set up on stands to be played by a single player, with drumsticks held in both hands, and the feet operating pedals that control the hi-hat cymbal and the beater for the bass drum. A drum kit consists of a mix of drums (categorized classically as membranophones, Hornbostel-Sachs high-level classification 2) and idiophones - most significantly cymbals, but can also include the woodblock and cowbell (classified as Hornbostel-Sachs high-level classification 1).
Recorder (musical instrument)
The recorder is a woodwind musical instrument in the group known as "internal duct flutes"—flutes with a whistle mouthpiece. A recorder can be distinguished from other duct flutes by the presence of thumb-hole for the upper hand and seven finger-holes: three for the upper hand and four for the lower. It is the most prominent duct flute in the western classical tradition. Recorders are made in different sizes with names and compasses roughly corresponding to different vocal ranges. The sizes most commonly in use today are the soprano (aka "descant", lowest note C), alto (aka "treble", lowest note F), tenor (lowest note C) and bass (lowest note F).
Electric ukulele
An electric ukulele is a ukulele which is electrically amplified. If not plugged in, it can still play acoustically. A solid-body electric ukulele produces very little sound acoustically, requiring an amplifier to be heard from more than a few feet away. Some solid-body electric ukuleles have steel strings and active humbucker style or single-coil magnetic pickups, such as the Blue Star Konablaster, Mahalo MEU1/S, RISA, Monkey Wrench, Mark Vinsel, Stagg, and Vorson electric ukuleles, while other electric ukuleles, such as Eleuke ukuleles, are solid-body electric ukuleles with nylon strings and passive pick-ups under the saddle.
Phonograph record
A phonograph record (also known as a gramophone record, especially in British English, or record) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the periphery and ends near the center of the disc. At first, the discs were commonly made from shellac; starting in the 1950s polyvinyl chloride became common. In recent decades, records have sometimes been called vinyl records, or simply vinyl, although this would exclude most records made until after World War II. The phonograph disc record was the primary medium used for music reproduction until late in the 20th century.
Guitar
The guitar is a fretted musical instrument that usually has six strings. The sound is projected either acoustically, using a hollow wooden or plastic and wood box (for an acoustic guitar), or through electrical amplifier and a speaker (for an electric guitar). It is typically played by strumming or plucking the strings with the fingers, thumb or fingernails of the right hand or with a pick while fretting (or pressing against the frets) the strings with the fingers of the left hand. The guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel strings and distinguished from other chordophones by its construction and tuning.
Bass amplifier
A bass amplifier or "bass amp" is a musical instrument electronic device that uses electrical power to make lower-pitched instruments such as the bass guitar or double bass loud enough to be heard by the performers and audience. Bass amps typically consist of a preamplifier, tone controls, a power amplifier and one or more loudspeakers ("drivers") in a cabinet. While bass amps share many features with the guitar amplifiers used for electric guitar, such as providing an amplifier with tone and volume controls and a carrying handle, they are distinct from other types of amplification systems, due to the particular challenges associated with low-frequency sound reproduction.
1_Apprentice
When was guitar invented
0_Wizard
Various tribes back in 1600 BC used to amplify some string harmonics
The string causes the soundboard and sound box to vibrate, and as these have their own resonances at certain frequencies, they amplify some string harmonics more strongly than others, hence affecting the timbre produced by the instrument.
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Acoustic guitar
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String harmonic
A string harmonic is a string instrument technique which uses the nodes of natural harmonics of a musical string to produce high pitched tones of varying timbre and loudness. String harmonics are, "high pitched tones, like a whistle's, are produced when the musician lightly touches certain points on a string." "A flute-like sound produced on a string instrument by lightly touching the string with the finger instead of pressing it down," against the fingerboard (without stopping). A harmonic may be measured by the location of the node pressed. The primary pitch perceived in a harmonic may be estimated using the complement of the inverse (pressing nodes dampens certain harmonics and brings out others, so every harmonic has multiple simultaneous frequencies, but the harmonic is usually heard as the pitch ).
Burntisland Shipbuilding Company
The Burntisland Shipbuilding Company was a shipbuilder and repairer in Burntisland, Fife, Scotland that was founded in 1918. In 1969 it was taken over by Robb-Caledon Shipbuilders, which in turn was nationalised in 1977 as part of British Shipbuilders. In the 1970s the Burntisland yard switched from shipbuilding to prefabricating modules of superstructure for offshore oil platforms, but orders were intermittent and by the 1980s the yard was largely idle. In 1990 new owners returned the yard to production as Burntisland Fabrications or BiFab, resuming the manufacture of superstructure modules for oil platforms.
History of China
Written records of the history of China date from as early as 1500 BC, from the Shang dynasty (c. 1600–1046 BC). Ancient historical texts such as the "Records of the Grand Historian" (c. 100 BC) and the "Bamboo Annals" (296 BC) describe a Xia dynasty (c. 2070–1600 BC) before the Shang, but no writing on a durable medium have survived. The Shang ruled in the Yellow River valley, which is commonly held to be the cradle of Chinese civilization. However, Neolithic civilizations originated at various cultural centers along both the Yellow River and Yangtze River. These Yellow River and Yangtze civilizations arose millennia before the Shang.
Violin
The violin, also known informally as a fiddle, is a wooden string instrument in the violin family. Most violins have a hollow wooden body. It is the smallest and highest-pitched instrument in the family in regular use. Smaller violin-type instruments are known, including the violino piccolo and the kit violin, but these are virtually unused. The violin typically has four strings tuned in perfect fifths, and is most commonly played by drawing a bow across its strings, though it can also be played by plucking the strings with the fingers (pizzicato) and by striking the strings with the wooden side of the bow (col legno).
Harmonic
A harmonic is any member of the harmonic series, a divergent infinite series. Its name derives from the concept of overtones, or harmonics in musical instruments: the wavelengths of the overtones of a vibrating string or a column of air (as with a tuba) are derived from the string's (or air column's) fundamental wavelength. Every term of the series (i.e., the higher harmonics) after the first is the "harmonic mean" of the neighboring terms. The phrase "harmonic mean" likewise derives from music. The term is employed in various disciplines, including music, physics, acoustics, electronic power transmission, radio technology, and other fields.
Horses in warfare
The first use of horses in warfare occurred over 5,000 years ago. The earliest evidence of horses ridden in warfare dates from Eurasia between 4000 and 3000 BC. A Sumerian illustration of warfare from 2500 BC depicts some type of equine pulling wagons. By 1600 BC, improved harness and chariot designs made chariot warfare common throughout the Ancient Near East, and the earliest written training manual for war horses was a guide for training chariot horses written about 1350 BC. As formal cavalry tactics replaced the chariot, so did new training methods, and by 360 BC, the Greek cavalry officer Xenophon had written an extensive treatise on horsemanship.
Ancient history
Ancient history is the aggregate of past events from the beginning of recorded human history and extending as far as the Early Middle Ages or the Postclassical Era. The span of recorded history is roughly 5,000 years, beginning with Sumerian Cuneiform script, the oldest discovered form of coherent writing from the protoliterate period around the 30th century BC. The term classical antiquity is often used to refer to history in the Old World from the beginning of recorded Greek history in 776 BC (First Olympiad). This roughly coincides with the traditional date of the founding of Rome in 753 BC, the beginning of the history of ancient Rome, and the beginning of the Archaic period in Ancient Greece.
1_Apprentice
How many categories of guitar are out there?
0_Wizard
About 600, which depends on the frequencies produced
The frequencies produced can depend on string length, mass, and tension.
chosen_Acoustic_guitar_0
Acoustic guitar
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Loudspeaker
A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound. The most widely used type of speaker in the 2010s 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 is applied to its 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.
Acoustic guitar
An acoustic guitar is a guitar that produces sound acoustically—by transmitting the vibration of the strings to the air—as opposed to relying on electronic amplification (see electric guitar). The sound waves from the strings of an acoustic guitar resonate through the guitar's body, creating sound. This typically involves the use of a sound board and a sound box to strengthen the vibrations of the strings. The main source of sound in an acoustic guitar is the string, which is plucked or strummed with the finger or with a pick. The string vibrates at a necessary frequency and also creates many harmonics at various different frequencies.
Piano
The piano is an acoustic, stringed musical instrument invented in Italy by Bartolomeo Cristofori around the year 1700 (the exact year is uncertain), in which the strings are struck by hammers. It is played using a keyboard, which is a row of keys (small levers) that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings. The word "piano" is a shortened form of "pianoforte", the Italian term for the early 1700s versions of the instrument, which in turn derives from "gravicembalo col piano e forte" and "fortepiano". The Italian musical terms "piano" and "forte" indicate "soft" and "loud" respectively, in this context referring to the variations in volume (i.e., loudness) produced in response to a pianist's touch or pressure on the keys: the greater the velocity of a key press, the greater the force of the hammer hitting the strings, and the louder the sound of the note produced and the stronger the attack.
Capacitor types
Capacitors are manufactured in many forms, styles, lengths, girths, and from many materials. They all contain at least two electrical conductors (called "plates") separated by an insulating layer (called the dielectric). Capacitors are widely used as parts of electrical circuits in many common electrical devices. Capacitors, together with resistors, and inductors, belong to the group of "passive components" used in electronic equipment. Although, in absolute figures, the most common capacitors are integrated capacitors (e.g. in DRAMs or flash memory structures), this article is concentrated on the various styles of capacitors as discrete components.
Quantitative genetics
Quantitative genetics is a branch of population genetics that deals with phenotypes that vary continuously (in characters such as height or mass)—as opposed to discretely identifiable phenotypes and gene-products (such as eye-colour, or the presence of a particular biochemical). Both branches use the frequencies of different alleles of a gene in breeding populations (gamodemes), and combine them with concepts from simple Mendelian inheritance to analyze inheritance patterns across generations and descendant lines. While population genetics can focus on particular genes and their subsequent metabolic products, quantitative genetics focuses more on the outward phenotypes, and makes summaries only of the underlying genetics.
Radio propagation
Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere. As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and scattering. Understanding the effects of varying conditions on radio propagation has many practical applications, from choosing frequencies for international shortwave broadcasters, to designing reliable mobile telephone systems, to radio navigation, to operation of radar systems.
Digital speaker
Digital speakers or Digital Sound Reconstruction (DSR) system are a form of loudspeaker technology. Not to be confused with modern digital formats and processing, they are yet to be developed as a mature technology, having been experimented with extensively by Bell Labs as far back as the 1920s, but not realized as commercial products. The least significant bit drives a tiny speaker driver, of whatever physical design is chosen; a value of "1" causes this driver to be driven full amplitude, a value of "0" causes it to be off. This allows for high efficiency in the amplifier, which at any time is either passing zero current, or required to drop the output voltage by zero volts, therefore in a theoretical ideal amplifier dissipating no power as heat at any time.
1_Apprentice
Which genre of music made the guitar as popular as it is today?
0_Wizard
 The main source of popularity is modern era blues music.
The main source of sound in an acoustic guitar is the string, which is plucked or strummed with the finger or with a pick.
chosen_Acoustic_guitar_0
Acoustic guitar
chosen_topic_0_Acoustic_guitar
Blues
Blues is a music genre and musical form originated by African Americans in the Deep South of the United States around the end of the 19th century. The genre developed from roots in African musical traditions, African-American work songs, spirituals, and the folk music of white Americans of European heritage. Blues incorporated spirituals, work songs, field hollers, shouts, chants, and rhymed simple narrative ballads. The blues form, ubiquitous in jazz, rhythm and blues and rock and roll, is characterized by the call-and-response pattern, the blues scale and specific chord progressions, of which the twelve-bar blues is the most common.
Blues People
Blues People: Negro Music in White America is a seminal study of Afro-American music (and culture generally) by Amiri Baraka, who published it as LeRoi Jones in 1963. In "Blues People" Baraka explores the possibility that the history of black Americans can be traced through the evolution of their music. It is considered a classic work on jazz and blues music in American culture. The book documents the effects jazz and blues on American cultural, at musical, economic, and social levels. It chronicles the types of music dating back to the slaves up to the 1960s. "Blues People" argues that "negro music"—as Amiri Baraka calls it—appealed to and influenced new America.
Rock music
Rock music is a broad genre of popular music that originated as "rock and roll" in the United States in the early 1950s, and developed into a range of different styles in the 1960s and later, particularly in the United Kingdom and in the United States. It has its roots in 1940s and 1950s rock and roll, a style which drew heavily on the African-American genres of blues and rhythm and blues, and from country music. Rock music also drew strongly on a number of other genres such as electric blues and folk, and incorporated influences from jazz, classical and other musical styles. Musically, rock has centered on the electric guitar, usually as part of a rock group with electric bass and drums and one or more singers.
Rhythm and blues
Rhythm and blues, often abbreviated as R&B, is a genre of popular music that originated in the 1940s. The term was originally used by record companies to describe recordings marketed predominantly to urban African Americans, at a time when "urbane, rocking, jazz based music with a heavy, insistent beat" was becoming more popular. In the commercial rhythm and blues music typical of the 1950s through the 1970s, the bands usually consisted of piano, one or two guitars, bass, drums, saxophone, and sometimes background vocalists. R&B lyrical themes often encapsulate the African-American experience of pain and the quest for freedom and joy, as well as triumphs and failures in terms of relationships, economics, aspirations, and sex.
Music of the United States
The music of the United States reflects the country's multi-ethnic population through a diverse array of styles. It is a mixture of music influenced by West African, Irish, Scottish and mainland European among others. The country's most internationally renowned genres are jazz, blues, country, bluegrass, rock, rhythm and blues, soul, ragtime, hip hop, barbershop, pop, experimental, techno, house, dance, boogaloo, salsa, and rock and roll. The United States has the world's largest music market with a total retail value of 4,898.3 million dollars in 2014, and its music is heard around the world. Since the beginning of the 20th century, some forms of American popular music have gained a near global audience.
American popular music
American popular music has had a profound effect on music across the world. The country has seen the rise of popular styles that have had a significant influence on global culture, including ragtime, blues, jazz, swing, rock, bluegrass, country, R&B, doo wop, gospel, soul, funk, heavy metal, punk, disco, house, techno, salsa, grunge and hip hop. In addition, the American music industry is quite diverse, supporting a number of regional styles such as zydeco, klezmer and slack-key. Distinctive styles of American popular music emerged early in the 19th century, and in the 20th century the American music industry developed a series of new forms of music, using elements of blues and other genres of American folk music.
Blues dance
Blues dancing is a family of historical dances that developed alongside and were danced to blues music, or the contemporary dances that are danced in that aesthetic. "Amateur Dancer" carried an article entitled "Blues and Rhythm and Blues Dancing" in a July/August 1991 issue. Mura Dehn used the term "The Blues" in "The Spirit Moves", Part 1, as the sub-section title of Chapter II, referencing different dance styles. African-American essayist and novelist Albert Murray used the term "blues-idiom dance" and "blues-idiom dance movement" in his book "Stomping the Blues". Early commentators on dance from sub-Saharan Africa consistently commented on the absence of close couple dancing, and such dancing was thought to be immoral in many traditional African societies.