Stemple J C, Lee L, D'Amico B, Pickup B
Institute for Voice Analysis and Rehabilitation, Dayton, OH 45202.
J Voice. 1994 Sep;8(3):271-8. doi: 10.1016/s0892-1997(05)80299-1.
Objective voice analysis including acoustic, aerodynamic, and laryngeal videostroboscopic measures demonstrated normal voice in 35 adult women. The subjects were then randomly divided into experimental, placebo, and control groups. The experimental group engaged in vocal function exercises. The placebo group engaged in a placebo exercise program. Objective measures taken after 4 weeks of execise demonstrated significant changes in phonation volume, flow rate, maximum phonation time, and frequency range for the experimental group. No significant changes were noted in the measurements of the control and placebo groups.
客观嗓音分析，包括声学、空气动力学和喉动态镜检查等指标，显示35名成年女性嗓音正常。这些受试者随后被随机分为实验组、安慰剂组和对照组。实验组进行嗓音功能训练。安慰剂组进行安慰剂训练项目。4周训练后进行的客观测量显示，实验组在发声音量、流速、最长发声时间和频率范围方面有显著变化。对照组和安慰剂组的测量结果未发现显著变化。
