Pure tone audiometry: Slight sensorineural hearing loss mainly at the lower frequency may be detected during or soon after attack. It may be recovered or lightened after the attack.
纯音测听：发作时或发作后不久，可检测到轻度的、以低频听力损失为主的感觉神经性耳聋，发作后恢复正常或减轻。
That is, it generates one pure tone or frequency at a time.
它可以每次产生一个纯音或者频率。
Methods 50 patients received standard pure - tone and extended high frequency audiometry for hearing measurement.
方法对50例压力性鼓膜穿孔患者的常频和扩展高频测听的听阈结果进行分析。
The system can issue a pure tone, tone twitter, narrowband noise and natural sound of the voice signal, and can adjust the loudness and frequency of the signals with some accuracy.
该系统能发出纯音、啭音、窄带噪声和自然声等声音信号，并可对信号进行一定精度的响度和频率调节。
Objective to investigate the relationship between minimum contralateral masking level (MCML) and pure tone threshold of the masking ears by the same frequency tone masking test.
目的应用同频音掩蔽试验观察不同个体最小对侧掩蔽级(MCML)与主观纯音听阈之间的关系，进而通过MCML判定被试者主观真实听阈。
Methods the pure tone thresholds of 30 subjects (60 ears) were measured by pure tone audiometry and MCML was obtained by means of the same frequency tone masking test.
方法30例受试者(60耳)分别进行纯音测听，首先测出双耳的纯音听阈，然后应用同频音掩蔽试验测试各个频率的MCML。
Methods 50 patients received standard pure-tone and extended high frequency audiometry for hearing measurement.
方法对50例压力性鼓膜穿孔患者的常频和扩展高频测听的听阈结果进行分析。
If the tinnitus frequency and the spontaneous ear sound launch tally, may be able to suppress the spontaneous ear sound launch using the outside pure tone the phenomenon, the cure tinnitus.
如其耳鸣频率与自发性耳声发射相吻合，可利用外界纯音能够抑制自发性耳声发射的现象，治愈耳鸣。
If the tinnitus frequency and the spontaneous ear sound launch tally, may be able to suppress the spontaneous ear sound launch using the outside pure tone the phenomenon, the cure tinnitus.
如其耳鸣频率与自发性耳声发射相吻合，可利用外界纯音能够抑制自发性耳声发射的现象，治愈耳鸣。
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