The teacher’s voice is loud, and the students must hear it clearly.

I remember that in high school days, the history teacher once said that the teacher who used the microphone class was not a first-class teacher, and then he proudly praised himself: “Like my voice is loud, I don’t need a microphone. Even the students sitting in the last row can listen. I can see my voice.” This thing makes me remember, and I think that loud sound is a necessary condition for being a good teacher. Nowadays I was a teacher and I also stood on the platform. The only difference is that I am the teacher of the Qicong class. However, it is also because I teach a group of children who are hearing-impaired, so that after many years I can re-examine the belief that I have long believed that the teacher is loud and the students must hear it clearly.

In mid-June, I participated in a seminar on the development of the hearing about hearing-impaired children. After the meeting, I gained a lot and felt a lot. The lecturer Dr. Carol Flexer, a Canadian-speaking audiologist, told us during the meeting that the voices spoken during the speech mainly include the vowels and consonants (ie, aspiration and non-aspiration). When the volume of the speech is amplified, the vowel part of the voice will Followed by the enlargement, but the change in the consonant part is minimal. What really affects the listener’s language reception is the part of the consonant. The reason why the hearing impaired person can’t hear clearly is that the part of the sub-sound receiving area has obstacles. In other words, determining a person’s speech intelligibility depends mainly on whether the vocalization of the consonant portion is clear or not, and the relationship with the volume is rather low. Therefore, for a child with hearing impairment, even if he says “Dad” aloud to him, listening to his ear often turns into “ㄚˋㄚ.” It can be seen that the volume of the teacher is large and the students may not be able to hear clearly.

In fact, regardless of whether the student’s hearing is normal or not, the teacher’s teaching is mainly based on whether it can achieve “clearness” rather than the volume. If there are hearing-impaired students in the class, it is best for the teacher to use a hearing aid transmitter with a frequency modulation system to make the hearing-impaired students achieve the desired sound. As for the regular class, it is also best to set up an enlarged volume device with improved speech intelligibility to benefit every student.

Many teachers nowadays feel that the volume is not big enough, or in order to cherish the throat, so I often buy a microphone from my own pocket. I hope that the content of the class can be heard by every student. However, the effect is very limited. It is better to think about the language. Degree problem!