Pontardawe, Swansea and Acoustic Music
Pontardawe - Bridge on the River Tawe
Pontardawe (Welsh for "bridge on the River Tawe") is a town of some 5,000 inhabitants in the Swansea Valley (Welsh: Cwmtawe) in south Wales. The community of Pontardawe, comprising the electoral wards of Pontardawe and Trebanos, is served by an elected Town Council and forms part of the county borough of Neath Port Talbot.
Pontardawe first came into existence as a settlement at the crossroads of two drovers' tracks, one from Swansea to Brecon, and the other from Neath to Llandeilo. Its best known landmark today is the tall spire of St Peter's church which sits on a high point of the valley floor overlooking the Swansea Canal close to the centre of the town.
During the latter part of the nineteenth century and up to the middle of the twentieth century the main industry in Pontardawe was steel and tinplate, with a number of steelworks and tinplate works exporting all over the world. None of the heavy industry remains; on the site of the Alloy works there is now a small industrial estate of a number of small engineering firms, motor maintenance, building supplies and a health centre for the area
Acoustic Music
Acoustic music comprises music that solely or primarily uses instruments which produce sound through entirely acoustic means, as opposed to electric or electronic means. The retronym "acoustic music" appeared after the advent of electric instruments, such as the electric guitar, bass guitar, electric organ and synthesizer.
Performers of acoustic music often increase the volume of their output using electronic amplifiers. However, these amplification devices remain separate from the amplified instrument and reproduce its natural sound accurately. Often a condenser microphone is placed in front of an acoustic instrument which is then wired up to an amp. This is the most effective way of amplifying an acoustic instrument.
Following the increasing popularity of the television show MTV Unplugged during the 1990s, acoustic (though in most cases still electrically-amplified) performances by musical artists who usually rely on electronic instruments became colloquially referred to as "unplugged" performances.
Writing for Splendid, music reviewer Craig Conley suggests, "When music is labeled acoustic, unplugged, or unwired, the assumption seems to be that other types of music are cluttered by technology and overproduction and therefore aren't as pure."
Acoustic Guitar
In all types of guitars the sound is produced by the vibration of the strings. However, because the string can only displace a small amount of air, the volume of the sound needs to be increased in order to be heard. In an acoustic guitar, this is accomplished by using a soundboard and a resonant cavity, the sound box. The body of the guitar is hollow. The vibrating strings drive the soundboard through the bridge, making it vibrate. The soundboard has a larger surface area and thus displaces a larger volume of air, producing a much louder sound than the strings alone.
As the soundboard vibrates, sound waves are produced from both the front and back faces. The sound box provides both a support for the sound board and a resonant cavity and reflector for the sound waves produced on the back face of the soundboard. The air in this cavity resonates with the vibrational modes of the string and at low frequencies, which depend on the size of the box, the chamber acts like a Helmoltz resonator(see Helmholtz resonance), increasing or decreasing the volume of the sound again depending on whether the air in the box is moving in phase or out of phase with the strings. When in phase, the sound is increased by about 3 decibels and when in opposing phase, it is decreased about 3 decibels. As a Helmholtz resonator, the air at the opening is vibrating in or out of phase with the air in the box and in or out of phase with the strings. These resonance interactions attenuate or amplify the sound at diff frequencies, boosting or damping various harmonic tones.Also, the air in the box is coupled to the resonance of the top plate. Together, which cause further interactions. The back of the guitar will also vibrate to a lesser extent, driven by the air in the cavity. Some sound is ultimately projected through the sound hole (some variants of the acoustic guitar omit this hole, or have f holes, like a violin family instrument). This sound mixes with the sound produced by the front face of the soundboard. All these complex air coupling interactions, along with the resonant properties of the panels, are a key reason that different guitars will have different tonal qualities. The sound is a complex mixture of harmonics that give the guitar its distinctive sound.
