#Vocalresonation

  Cross-section of the head and neck Vocal resonation is the process by which the basic product of phonation is enhanced in timbre and/or intensity by the air-filled cavities through which it passes on its way to the outside air. Various terms related to the resonation process include amplification, enrichment, enlargement, improvement, intensification, and prolongation, although in strictly scientific usage acoustic authorities would question most of them. 

The main point to be drawn from these terms by a singer or speaker is that the end result of resonation is, or should be, to make a better sound.[14] There are seven areas that may be listed as possible vocal resonators. In sequence from the lowest within the body to the highest, these areas are the chest, the tracheal tree, the larynx itself, the pharynx, the oral cavity, the nasal cavity, and the sinuses.[15]  Chest voice and head voice Main articles:

 Chest voice and Head voice Chest voice and head voice are terms used within vocal music. The use of these terms varies widely within vocal pedagogical circles and there is currently no one consistent opinion among vocal music professionals in regards to these terms. Chest voice can be used in relation to a particular part of the vocal range or type of #vocalregister; a vocal resonance area; or a specific vocal timbre.[14] Head voice can be used in relation to a particular part of the vocal range or type of vocal register or a #vocalresonance area.[14] In Men, the head voice is commonly referred to as the falsetto. /wiki/Singing