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sound - Coggle Diagram

- - - - A body vibrating with larger amplitude will produce a louder sound and the one vibrating with smaller amplitude will produce a softer sound.
        
        Loudness also depends on the distance between the listener and the source. Larger the distance between the source and the listener, lesser is the loudness of sound heard by the listener.
        
        Loudness of a sound is measured in decibel (dB).
        
        A decibel is one tenth of a 1 bel (B).
        
        The loudness unit called the Bel was named after Alexander Graham Bell, the inventor of the telephone.
        
        the table
  - - - The sound quality of each instrument is different
  - - - It refers to how shrill or flat a sound is
        
        higher the frequency, higher will be the pitch ( shrill sound), while lower the frequency lower would be the pitch ( flat or hoarse sound).
    - - By shortening or tightening the string, the pitch gets higher.
    - - The number of vibrations increase when we use a thinner string , thus raising the pitch.
        
        In tabla, a tight drum skin gives a high pitched sound than a loose drum skin.
        
        The voice of women is generally pitched compared to the voice of men. This is because women have shorter vocal cords which vibrate with high frequency to produce a high pitched sound.
        
        A guitar produces musical sounds through vibration of strings. To change the pitch, guitarists change the length of the string by pressing the string down at different places along the neck of the guitar.
        
        A standard piano keyboard has 88 keys. When you press a key on the piano, it causes a small hammer inside the piano to hit a string. The string vibrates and u hear the sound.
        
        Low pitch left; high pitched right side
- - - - The letter 'a' represents the amplitude of sound waves