Final answer:
A pitch bend in music is the altering of a note's pitch by changing its frequency, which can be done using various techniques depending on the instrument, including the human voice.
Step-by-step explanation:
Pitch Bend in Music
A pitch bend refers to the raising or lowering of a tone's pitch in music. This can be done using various methods depending on the instrument, such as bending guitar strings, adjusting the slide on a trombone, or manipulating a pitch bend wheel on synthesizers. Pitch is the perception of frequency, and changing the pitch changes the frequency at which sound waves are produced, thus altering the sound we hear.
Human voice pitch is changed by relaxing or tightening the glottis. Musicians use tools like tuning forks to create sound waves at specific frequencies, which aid in tuning instruments to the correct pitches.
The timbre of a sound, which is the quality that distinguishes it from other sounds, is sometimes mistaken for pitch. However, timbre is not related to the pitch but to the sound's waveform and other qualities.