Formants are a set of resonant frequencies that are produced by the vocal tract when we speak or sing. Specifically, formants are created by the vibration of air in the spaces within the vocal tract, such as the mouth, pharynx, and nasal cavity.
When we sing or speak, the vocal cords vibrate to produce sound waves that travel through the vocal tract and are modified by the shape and size of the vocal tract. The resonant frequencies produced by the vocal tract are called formants, and they give each person's voice a unique character and timbre.
Formants are important in singing because they help us create different vowel sounds and modify our tone. By changing the shape and size of our vocal tract, we can manipulate the formants and create different resonances in our voice. For example, to create a brighter or more "forward" sound, we might focus on amplifying the higher formants. On the other hand, to create a more mellow or "darker" sound, we might focus on amplifying the lower formants.
Understanding formants and how to manipulate them can be especially important for singers who perform in genres that require a lot of vocal control, such as classical or musical theater. With proper technique and training, singers can learn to adjust their formants and create a wide range of vocal colors and timbres.
In summary, formants are resonant frequencies produced by the vocal tract when we sing or speak. By manipulating the shape and size of the vocal tract, singers can control their formants and create different vowel sounds and tones. Understanding formants and how to use them effectively can be an important aspect of singing technique and performance.