The methods of making bubble sounds are as follows: luck method, mouth shape method, pronunciation method, continuity, smooth transition, and combined use.

1. Luck method

Inhale enough air when inhaling, and then squeeze the air hard from the abdomen when exhaling, push the air through the vocal cords, and control it with the mouth and tongue A bubble sound of "shhhhhhh" was made. To maintain a continuous and stable airflow, adjust the mouth shape and control the pitch.

2. Mouth shape method

Put your lips into a trumpet shape or a small O shape, and adjust the size of your mouth to change the pitch. The smaller the mouth, the higher the pitch. Relax your tongue and don't press it nervously against your upper gums.

3. Pronunciation method

The pronunciation of "Sh" should be clearly pronounced from between the teeth. Use your tongue to slightly press against the upper gums to form a small channel, and then use your lips to control it and pronounce it. A short and continuous sound of bubbles "shhh".

4. Continuity

Practice repeatedly to master the stable and uninterrupted air flow, and be able to freely adjust the rise and fall of the pitch to make the bubble sound coherent and smooth. At the same time, the volume should be controlled and not too loud.

5. Smooth transition

There should be a smooth transition between bubble sounds to avoid delays in stopping the breath. You can practice long tones first, and then practice jumping by adding bubble sounds between the long tones.

6. Combined use

Combine bubble sounds with other sound production methods, such as air sounds, to enhance expressiveness. Quickly switch between different pronunciation techniques for a lyric or a note.