会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Digital hearing impairment simulation method and hearing aid evaluation
method using the same
    • 数字听力损伤模拟方法和助听器评估方法采用相同的方法
    • US5944672A
    • 1999-08-31
    • US60257
    • 1998-04-15
    • Dong-wook KimYoung-cheol Park
    • Dong-wook KimYoung-cheol Park
    • A61B5/12H04R25/00A61B5/00
    • A61B5/7257A61B5/12H04R25/30H04R25/505
    • A digital hearing impairment simulation method and a hearing aid evaluation method using the same are disclosed. According to the digital hearing impairment simulation method, a hearing characteristic table of a hearing impaired person is input and the input table is stored in a memory, in order to sample the hearing characteristics of the hearing impaired person (S1). A hearing loss table is calculated and stored in the memory (S2). An audio signal input via an audio input portion is converted to a digital signal and the converted digital signal is stored in the memory (S3). The converted digital signal is converted to the frequency domain signal using a fast Fourier transform algorithm (S4). The average power by critical band is calculated (S5). A hearing loss gain for each critical band is calculated using the hearing loss table and the average powers of the critical bands (S6). Coefficients for a digital filter corresponding to the hearing loss gains of the critical bands is calculated (S7). The input signal converted to a digital signal and stored in the memory in the step (S3) is digitally filtered using the digital filter coefficients (S8). The digitally filtered signal is converted to an analog signal and the converted analog signal is output to an audio output portion (S9). Thus, the performance of a hearing aid can be easily evaluated and hearing characteristics of a hearing impaired person can be easily sampled.
    • 公开了一种数字式听力损伤模拟方法和使用该方法的助听器评估方法。 根据数字听力损伤模拟方法,输入听力障碍者的听力特征表,并将输入表存储在记忆体中,以便对听力受损者的听力特征进行抽样(S1)。 听力损失表被计算并存储在存储器中(S2)。 通过音频输入部分输入的音频信号被转换为数字信号,转换的数字信号被存储在存储器中(S3)。 转换的数字信号使用快速傅里叶变换算法转换为频域信号(S4)。 计算临界频带的平均功率(S5)。 使用听力损失表和临界频带的平均功率来计算每个临界频段的听力损失增益(S6)。 计算与临界频带的听力损失增益相对应的数字滤波器的系数(S7)。 在步骤(S3)中转换为数字信号并存储在存储器中的输入信号使用数字滤波器系数进行数字滤波(S8)。 经数字滤波的信号被转换为模拟信号,转换的模拟信号被输出到音频输出部分(S9)。 因此,可以容易地评估助听器的性能,并且可以容易地对听力受损的人的听力特征进行采样。