Ton is a physical phenomenon.When an object vibrates,sound waves are generated,which are transmitted through the air to the eardrum and perceived as sound through the brain's reflection.The sound that a person can hear vibrates around 16-2000 times per second,while the sound used in music(excluding overtones)is generally limited to the range of 27-4100 vibrations per second.The height,strength,length,and timbre of a sound depend on the state of the object's vibration.
　　Tone color refers to the sensory characteristics of a sound.The vibration of the pronunciation body is composed of various homophones,including fundamental and overtones.The number of overtones and the relative strength between overtones determine a specific timbre.
　　Resonance refers to the vibration of a sound body that causes other objects to vibrate and produce sound.
　　Fundamental tone is the lowest frequency sound produced when an object vibrates,while the rest are overtones.That is to say,the entire section of the pronunciation vibrates.The fundamental tone determines the pitch.
　　In addition to the fundamental sound produced by the overall vibration of the pronunciation,harmonic overtones also vibrate simultaneously in their parts such as 1/2,1/3,and 1/4.For example,when playing the lowest C note of a cello,the vibration of the strings includes the vibration shown in the diagram.The combination of overtones determines a specific timbre and can make people feel the loudness of the fundamental note clearly.Instruments and all sounds in nature have overtones
　　Pitch is represented by the number of vibrations per second.The higher the frequency,the higher the pitch;the lower the frequency,the lower the pitch.The sound that vibrates 440 times per second is designated as"a",which is currently the internationally recognized standard sound.
　　A pitch name refers to a name in Western music that represents a fixed pitch.These names vary by country.Widely adopted is:C D E F G A B.
　　Syllable names refer to the names of each note on a scale.Usually,1do,2re,3mi,4fa,5sol,6la,7si are used.The tonic in major is 1do,and the tonic in minor is 6la.
　　Compass refers to the range of the lowest to highest notes that a person's voice or instrument can achieve.
　　Tonality refers to the category of modes and the height of the tonic.For example,in C major and D minor.In a piece of music,the tonic is at the core of the melody and harmony,with other notes forming subordinate relationships and ultimately ending on the tonic.This kind of music becomes tonal music.
　　The notes in a scale pattern are arranged in order of pitch,starting from the tonic note.According to the number of tones contained in the mode,it can be divided into"pentatonic scale","heptagonal scale",etc.The scale from low to high is called ascending,and from high to low is called descending.
　　The pentatonic scale is a scale composed of five notes.A mode commonly used in ethnic music.For example:do,re,mi,sol,la,(do).
　　A type of major mode.Except for the third and fourth notes and the seventh and eighth notes,which are semitones,all other scales are whole notes.Major colors are usually brighter than minor ones.
　　Minor mode,abbreviated as Western minor,has three forms:natural minor,harmonic minor,and melodic minor.The colors of minor tones are generally darker and darker,often used to express sad and melancholic emotions.
　　Just intonation is different from the law of twelve averages.The relationship between each note and the tonic in a scale is a pure interval.Due to the inability to evenly divide the resulting semitones,they cannot be easily transposed.Due to inconvenience in use,they are now less commonly used.The first note in the key note mode scale.
　　A type of musical temperament known as the Twelfth Temperament.Divide an octave into twelve semitones,and the intervals of semitones are equal.The theory of uniformity was first established by the great musician Zhu Zaiyu of the Ming Dynasty in China.Piano,harp,and other instruments are all strung according to this rhythm.
　　In the West,the law of twelve averages originated in the 16th century and was widely adopted in the 18th century.
　　Half tone,whole tone divides an octave into twelve equal parts,each part being a half tone,and two half tones are equivalent to a whole tone.A half tone is equivalent to a minor second,and a whole tone is equivalent to a major second.
　　Consonant and dissonant intervals can be divided into complete consonant intervals(pure 1,4,5,8 degrees)and incomplete consonant intervals(major,minor 3,6 degrees)based on the degree of harmony.Other than that,they are all dissonant intervals.
　　Interval refers to the distance between two notes.The unit for calculating intervals is called"degree",and the number of syllables between two sounds is called"degree".Intervals with the same degree have differences in purity,major,minor,increase,and decrease due to the different number of semitones and whole tones they contain.
　　The range of high and low tones in a range.The sounds of different regions have different functions and characteristics in expressing thoughts and emotions.
　　Two or more sounds of harmony are combined simultaneously according to a certain pattern.The strong and weak,stable and unstable,harmonious and dissonant,as well as the tendency of unstable and dissonant chords towards stable and dissonant chords,constitute the functional system of harmony.The functional role of harmony directly affects the strength of force,the tightness of rhythm,and the magnitude of power.In addition,the sound effect of harmony also has differences in brightness and density,making harmony have the function of rendering colors.
　　The simultaneous combination of two or more melodies in polyphony.The simultaneous combination of different melodies is called contrastive polyphony,while the sequential imitation of the same melody separated by a certain elbow is called imitative polyphony.The use of polyphonic techniques can enrich the image of music,strengthen the momentum of music development and the independence of vocal parts,resulting in a responsive and fluctuating effect.
　　The mode is a sequence of notes derived from the different pitches used in the melody and harmony of a musical work.These sounds are interrelated and maintain a certain tendency.And tonality is the pitch of the central tone(tonic)of a mode.In many musical works,the conversion and contrast of modes and tonality is an important means to reflect the change of atmosphere,color,mood and image.
　　A basic tutorial on the meaning of dB
　　There is too much uncertainty in the sound,but despite this,engineers still try to establish some rules.It should be noted that these"rules"have a short history and have not caught up with it.Otherwise,they may be able to hear your opinion on the formulation of these rules.
　　DB,also known as"decibel"in Chinese,has no special meaning,just like"centimeter"and"kilogram",which are one unit.Weight is represented by"kilogram",length is represented by"centimeter",and sound must also have a unit,so use"decibel"!Just so certain,it scared away a group of people,leaving behind people who continue to be ignorant of human fireworks and continue to be"regulated"and"defined".It's too late for us to change.Now people just talk about"decibels"and"dB",and we netizens should not be old-fashioned."Beethoven"and"decibels"are not related.
　　How long is 4 centimeters?Think about it carefully,if you don't have the concept of how long 1 centimeter is,you definitely don't know how long 4 centimeters are.How loud is the sound?Do we also need any preconceived concepts?Let's first determine how loud a 1 watt power is,and then look at how big a 4 watt power is.That's what engineers thought back then.4/1=the size we want,(size is measured!)Originally a very simple concept,Mr.Bel insisted on creating a log(he had read a book-no,at least he had to graduate from high school to understand what"log"is)."Log"is called"logarithmic function"in Chinese,and log(4/1)=0.6021,
　　He also said that decimals are inconvenient,multiply by 10 in front!So far,it's all Bel talking,and I really don't know why future generations will listen to him.The standard for sound size has been established,with decibels(dB)=10 times log(power 1/power 0),power 1=4 watts,and power 0=1 watt.Now let's describe how loud 4 watts are:
　　10xlog(4/1)=6dB
　　The sound produced by a 4-watt power is 6dB louder than that produced by a 1-watt power
　　Based on the above calculation,our experience is that for every doubling of power,the sound pressure increases by 3dB.
　　Csp58:1 watt is 102.5dB,2 watts=102.5+3;4 watts=102.5+3+3;8 watts=102.5+3+3+3;16 watts=102.5+3+3+3+3,(We had a lot of 2/2/2/...,3+3+3+...it turns out like this!)