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托福听力学科背景知识:音色

2018-07-23 11:31:49来源:网络

  托福考试中,听力部分是难度最大的部分。想要拿到这部分的高分成绩,大家在复习备考中,还是需要掌握一些提分的方法。今天新东方在线托福网为大家整理的是关于托福听力学科的背景知识,辅助大家更好地掌握这些重点知识,为接下来的听力备考做好基础。

【点击查看托福听力学科背景知识汇总】

  TIMBRE is the tonal quality or color of a sound. This quality is determined by the wave shape, which is determined in turn by factors such as the shape of the vibrating body, its material (metal, wood, human tissue), and the method used to put it in motion (striking, blowing, plucking).

  1. Vibrating Stimulus

  (Drum Stick, Bow, fingers, pick) 2. Vibrating Body

  (Drum Head, String, Metal, Air) 3. Resonator

  (Body of Drum, body of violin or guitar) 4. Other

  (Snares, guitar distortion, spider-web casing on balafon)

  Each tone we hear is actually a composite of tones called the harmonic series. The pitches produced simultaneously by the vibrating sections are called partials, overtones, or harmonics.

  The first partial, often called the fundamental, is the lowest frequency and is perceived as the loudest. This is what the ear identifies as the specific pitch of the musical tone.

  TIMBRE: CLASSIFYING MUSICAL INSTRUMENTS IDIOPHONES

  Instruments made of naturally sonorous materials not needing any additional tension as do strings or drumskins. The basic question is how they are set into vibration.

  Methods:

  concussion (struck together)

  struck

  stamped

  shaken

  scraped

  plucked

  rubbed (friction) AEROPHONES

  Aerophones include what are usually called “wind instruments,” with the addition of a few instruments with a different acoustical principle called free aerophones. There are two essential factors: a tube enclosing a column of air, and a devise for setting that air into vibration.

  以上就是为大家整理的“托福听力学科背景知识:音色”,更多精彩内容请关注新东方在线托福频道!


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