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通过呼吸机能控制声门下的压力,是决定音色和音量的主要因素。实验证实,当最大吸气后,紧闭声门,拼力呼气,声门下气压可达100cm H_2O。即使在临近呼气的终末期,以肺内的余气呼出,声门下气压亦可达45～75 cm H_2O。但人们发最强的嗓音所需的声门下压力只是60cm H_2O。因此,作者认为在任何情况下,都不必要竭尽全力以发声。这是嗓音保健的主要因素之
Through the breathing machine to control the subglottic pressure, is to determine the tone and volume of the main factors. Experiments confirmed that when the maximum inspiratory, tight glottic, spit force, subglottic pressure up to 100cm H_2O. Even at the end of the expiration of the expiration, the residual pressure in the lungs is exhaled, and the subglottic pressure can reach 45-75 cm H 2 O. But the subglottic pressure that people need to make the strongest voice is only 60cm H_2O. Therefore, the author does not consider it necessary in any case to make every effort to sound. This is the main factor in the health of the voice