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所在平台: Udemy |
课程主页: https://www.udemy.com/course/learn-17-simple-scales-on-harmonica/
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**课程名称：** 学习17种简单口琴音阶 - 音阶是入门之道！ **课程概述：** 本课程专注于教授如何在口琴上演奏简单的音阶。在音乐理论中，音阶是由基本频率或音高排序的一组音符。按音高递增顺序排列的音阶称为上升音阶，按音高递减顺序排列的称为下降音阶。 通常，尤其是在古典音乐时期，大部分音乐作品的旋律与和声都是围绕着单一音阶构建的，这可以通过带有标准调号的五线谱方便地表示出来。 由于八度等效原则，音阶通常被认为只跨越一个八度，更高或更低的八度只是重复该模式。音阶代表了八度空间划分成一定数量的音阶级数，音阶级数是两相邻音符之间可识别的距离（或音程）。然而，音阶级数不必在任何音阶内相等，特别是在微调音乐中，任何音程空间内可以注入的音符数量并没有限制。 通过衡量每个音阶级数的宽度，可以对音阶进行分类。例如，在半音阶中，每个音阶级数代表一个半音，而大调音阶的定义是全-全-半-全-全-全-半（W-W-H-W-W-W-H）的音程模式，其中W代表全音（两个半音的间隔，如C到D），H代表半音（一个半音的间隔，如C到D♭）。根据其音程模式，音阶被分为多种类别，包括自然音阶、半音阶、大调音阶、小调音阶等。 特定的音阶由其独特的音程模式和一个特殊的音符（称为其首个音级或主音）定义。音阶的主音是作为八度起始的音符，因此也是采用的音程模式的起点。通常，音阶的名称会同时包含其主音和音程模式。例如，“C大调”表示一个以C为主音的大调音阶。
This course is about playing simple scales on the harmonica.In music theory, a scale is any set of musical notes ordered by fundamental frequency or pitch. A scale ordered by increasing pitch is an ascending scale, and a scale ordered by decreasing pitch is a descending scale.Often, especially in the context of the common practice period, most or all of the melody and harmony of a musical work is built using the notes of a single scale, which can be conveniently represented on a staff with a standard key signature.Due to the principle of octave equivalence, scales are generally considered to span a single octave, with higher or lower octaves simply repeating the pattern. A musical scale represents a division of the octave space into a certain number of scale steps, a scale step being the recognizable distance (or interval) between two successive notes of the scale. However, there is no need for scale steps to be equal within any scale and, particularly as demonstrated by microtonal music, there is no limit to how many notes can be injected within any given musical interval.A measure of the width of each scale step provides a method to classify scales. For instance, in a chromatic scale each scale step represents a semitone interval, while a major scale is defined by the interval pattern W-W-H-W-W-W-H, where W stands for whole step (an interval spanning two semitones: From C to D), and H stands for half-step (From C to D♭). Based on their interval patterns, scales are put into categories including diatonic, chromatic, major, minor, and others.A specific scale is defined by its characteristic interval pattern and by a special note, known as its first degree (or tonic). The tonic of a scale is the note selected as the beginning of the octave, and therefore as the beginning of the adopted interval pattern. Typically, the name of the scale specifies both its tonic and its interval pattern. For example, C major indicates a major scale with a C tonic.
