Volume vibrating and Pitch vibrating

There are two types of vibrating techniques in vocalization, which are volume vibrations and pitch vibrations.
Regarding volume vibrations, it is important to properly control exhalation which consists of (1)functionality of the lungs (2)flexibility of the internal and external intercostal muscles (3)motional range of the costovertebral joint (4)muscular power of the rectus abdominis, the abdominal external oblique muscle and the latissimus dorsi muscle.
If these muscles move consistently well, you can control the diaphragm easily.
When taking a breath in, the diaphragm goes down and the lungs expand. A lot of people think that the diaphragm moves by itself but the diaphragm depends heavily on muscles (1) to (4).
If (1) to (4) do not move actively, you cannot expand the lungs, causing less breath to be taken in.
Also, if (1) to (4) muscles do not work smoothly, the phrenic nerve exiting from the cervical plexus relating to the sternocleidomastoid muscle or anterior scalene muscle directly causes the neck and shoulders to become stiff.
Regarding the pitch vibrate, the kinematic performance and the flexibility of the cricothyroid muscle are necessarily required to perform said action, and need enough space to be able to move the larynx freely.
It’s not good if the omohyoid muscle, the pharyngeal constrictors, the cricopharyngeal muscle and the stylopharyngeus muscles contract so much when vocalizing.
The vocal pitch is made by the vocal cord of expanding and contracting. The vocal cord is moved by the cricothyroid muscle.
Furthermore, the vibrational performance of the vocal cord is most important for pitch.
The vibration performance of the vocal cord depends on the vocal cord muscles and the vocal cord mucosa. The vocal cord vibrates at its best with moisturized vocal mucosa and flexible muscles.
For getting flexible vocal cord muscles, you have to improve the movement range of the cricothyroid articulation and arytenoid cartilage located at the top of the cricoid cartilage.
For moisturizing the vocal cords’ mucosa, you have to improve the blood circulation in the larynx. Two examples are, using a steam vaporizer or taking hyaluronic acid.
Voice care candy can give and penetrate hyaluronic acid to the mucosa in the larynx.
In fact, if you take the candy during singing or speaking, you will be able to let out your voice smoothly.

cool soundwave with reflection