Tập một số bài luyện thanh. Tập đọc to. Tự ghi âm. Tìm một giáo viên luyện thanh. Mỉm cười khi nói.

Given the above summary, write a detailed text in English for it.
. Practicing vocal exercises can be a good way to develop your natural speaking voice. Practicing while looking in the mirror is the most effective way to achieve this, as are some of these ways:  Try to loosen your mouth and relax your vocal cords. You can do this by yawning widely, wiggling your jaw from side to side, humming a tune, and gently massaging your throat muscles with your fingers.  Increase your breathing capacity and volume by fully exhaling until all of the air is completely expelled from your lungs, then take a deep breath and hold it for 15 seconds before exhaling again.  Work on your pitch by singing the sound "ah", first at your normal pitch, then getting progressively lower. You can also do this with each of the letters of the alphabet.  Repeat tongue twisters like: Red leather, yellow leather. She sells seashells by the seashore. Peter piper picked a peck of pickled peppers. . In order to work on pronunciation, pace and volume, it is a good idea to practice reading aloud.  Pick a passage from a book or magazine, or better yet, find a transcript of a famous speech (such as one by Dr. Martin Luther King, Jr.) and read it aloud to yourself. Remember to stand up straight, breathe deeply and open your mouth fully when you speak. Stand in front of a mirror if it helps. Keep practicing until you are happy with what you hear. Then try to employ the same techniques as part of your everyday speech. . Even though most people don't like listening to the sound of their own voices, it's a good idea to record yourself speaking.  This can help you to pick up on any faults that you wouldn't normally pick up on, such as mispronunciations and speed or pitch problems. Nowadays, most phones will have a recording option that you can use to listen to yourself. You could also use a video camera (which could be helpful to check your posture, eye contact and mouth movement). If you're really worried about improving your speaking voice - for something like a debate, speech or presentation - then it might be a good...