No, higher pitch does not necessarily mean a louder voice when singing. Pitch and volume are two separate aspects of sound.
Pitch refers to the perceived frequency of a sound, and it determines whether a sound is perceived as high or low. When singing, a higher pitch means singing at a higher frequency, producing higher notes.
Volume, on the other hand, refers to the loudness or intensity of a sound. It relates to the amplitude or energy of the sound waves. Singing loudly produces a higher volume, while singing softly produces a lower volume.
While pitch and volume can be related in certain contexts, they are not directly dependent on each other. It is possible to sing high-pitched notes softly or loudly, just as it is possible to sing low-pitched notes softly or loudly. A singer can vary their volume independently of the pitch they are singing.
Professional singers often have control over both pitch and volume and can manipulate them separately to create expressive and dynamic performances. They can sing high notes softly or loudly, and similarly, they can sing low notes softly or loudly based on the musical requirements of the song.