Friday, July 22

ART OF LIVING (DITCH): GUITAR

ART OF LIVING (DITCH): GUITAR

GUITAR

Interesting Facts about the Guitar:
  • The ancestors of the modern guitar can be traced back to the stringed instruments played across Central Asia and India, in ancient times.
  • The oldest iconographic representation of the guitar is a 3,000 year old carving of a Hittite or ancient Anatolian bard playing the instrument.
  • The modern guitar is believed to have descended from the cithara brought to Hispania by the Romans, in 40 AD.
  • The various references to the guitar in ancient times included guitarra, gitarre, guitare, qitara, cithara, kithara and sihtar.
  • Traditionally, guitars were constructed with combinations of various woods. The strings were made of animal gut.
  • The musical instrument has a mention in records maintained by the Moors, Viking incursions and in traditional Norse carvings.
  • Dimension standards of the modern guitar were established by Antonio Torres Jurado, between 1817 and 1892.
The basic guitar design typically comprises:
  • Headstock, at the end of the guitar neck.
  • Neck, comprising frets, tuners, fretboard, headstock and truss rod.
  • Nut, a small strip of any hard material at the headstock-fretboard juncture.
  • Fretboard or fingerboard.
  • Frets, metal strips embedded on the fretboard.
  • Truss rod, a metal rod along the inside of the neck.
  • Strings made from metal or polymer materials.
  • Inlays, visual elements along the exterior surface.
Guitar accessories comprise:
  • Capotasto, to open up string pitch.
  • Slides, to generate the glissando effect.
  • Plectrum, to 'pick' the strings.
The guitar is a very versatile musical instrument. It enables the composition of complex harmonies and precise intonation. It is a popular choice of musicians dedicated to different music genres for the musical embellishments it promotes, such as slides, bends and harmonics

Thursday, June 16

Lunar eclipse 2011










Biometrics ( MATLAB )


I NTRODUCTION

BIOMETRICS; are automated methods of recognizing anindividual based on their physiological (e.g., fingerprints,face, retina, iris) or behavioral characteristics (e.g., gait,signature). Each biometric has its strengths and weaknessesand the choice typically depends on the application. No singlebiometric is expected to effectively meet the requirements of all the applications. Fingerprint recognition has a very goodbalance of all the properties. A number of biometriccharacteristics are being used in various applications asUniversality, Uniqueness, Permanence, Measurability,Performance, Acceptability, and Circumvention [1]



.What is a Fingerprint?

A fingerprint is the feature pattern of one finger [10]. Eachperson has his own fingerprints with the permanentuniqueness. However, shown by intensive research on fingerprint recognition, fingerprints are not distinguished bytheir ridges and furrows, but by Minutia, which are someabnormal points on the ridges as shown in Fig. 1. Among thevariety of minutia types reported in literature, two are mostlysignificant and in heavy usage: one is called termination,which is the immediate ending of a ridge; the other is called



What is Fingerprint Recognition?

The fingerprint recognition problem can be grouped intothree sub-domains: fingerprint enrollment, verification andfingerprint identification. In addition, different from themanual approach for fingerprint recognition by experts, thefingerprint recognition here is referred as AFRS (AutomaticFingerprint Recognition System), which is program-based.Verification is typically used for positive recognition, where theaim is to prevent multiple people from using the same identity.Fingerprint verification is to verify the authenticity of oneperson by his fingerprint. There is one-to-one comparison inthis case. In the identification mode, the system recognizes anindividual by searching the templates of all the users in thedatabase for a match. Therefore, the system conducts a one-to-many comparison to establish an individual’s identity