【摘要】 BY-1型声刺激器是专门用作听觉系统诱发电位（蜗电图、脑干电位、皮层声诱发电位等）测定的声刺激信号发生器。可发生短纯音、单周纯音、连续纯音、短声、滤波短声、变形短纯音等各种声音信号。短纯音持续期：1ms～999ms；间隔期：1ms～9999ms；上升、下降时间：0.5ms～15ms；频率：0.25K，0.5K，1K，2K，4K，8KHz：最大输出：4KHz以下110dB；8KHz，100dB。分别由20W扬声器及耳机输出。仪器备有每挡5dB的衰减器及自动反相装置。我们应用该仪器发出的各种声音信号，测定了正常人、病人（143例）及豚鼠的听觉系统声诱发电位。更多还原

【Abstract】 ABSTRACTAn audiostimulator to generating various sound signals is necessary, when the objective audiometry should be carried out with auditory evoked potential methods (e.g.ECochG, BSR and ERA).We designed and manufactured the BY-1 audiostimulator that provides short tone burst, single sine wave, tonepip, click, continuous puretone and white noise, etc.Tone burst duration; lms-999ms; Rise and fall time. 0.5ms-15ms;Frequency. 0.25k, 0.5k, 1k, 2k, 4k, 8kHz;Repetition rate. 0.1-1000 per second.The apparatus has an inverter, converting alternately and automatically the phase of pulses.The output can be connected either to a earphone or to a loudspeaker ( 20 watts) .The sound intensity is controlled by a 5 dB-step attenuator, the range of attenuation is 0-110 dB.The audiostimulator was used in the study of auditory evoked potential of patients ( 143 ), normal people and animals ( Guinea Pigs ) .The experiment data showed no difference from those obtained with foreign-made standardized audiostimulatorThe BY-1 audiostimulator has proved, in trials, to fulfil the requirements designed and to be able to meet the demands of objective audiometry.更多还原