This study describes some voice production aspects, like sound spectrum as the fundamental frequency, harmonics, the formants and also the laryngeal adjustments through the phonoaudiology and acoustics literature. The literature review includes the anatomical and physiological description of the vocal apparatus, its functions and the mechanism for the vocal production. It also describes related aspects of the sound spectrographs, to the formants location and to the anatomical muscle adjustments to realize the singer's formant. This study aims at clarifying concepts and raising questions about what happens in vocal physiology and what is said and accepted by the common sense about the singer's formant.
voice; singer´s formant; singing; phonoaudiology; acoustics
