| 摘要 |
In a voice-training arrangement, measuring devices (1, 2, 3, 6) connected to optical display devices (9, 10, 11, 12, 13, 14) are provided at several points on the pupil's body. A pressure sensor amplifier (4, 7) is connected through an analog multiplexer (5) to each measuring device (1, 2, 3, 6) and a sound pressure measuring device (16) is connected directly to the corresponding display device (23). |
