Suppose a person is singing a particular song at a level comfortable to normal speech. Now if the person starts singing that same song at a louder level, what changes - the pitches of the various notes of the song, or the volume, or both ?
I mean , suppose there is a song being played on a computer , one can increase it's volume without changing it's picth. Is it possible to do the same while singing?
I always have an intuitive feeling that while going up a major scale , I am trying to sing a bit loudly. Is it possible to sing the same frequency, say the middle C, at different volumes ? If yes, how .