==Instrument: Accurio== ===WDRC Autofit (rev 2006-08-01)=== ====Defaults==== # Set general instrument defaults. # Perform standard WDRC autofit. ====Equalizer==== # If HearingThresholdLevel@6.5kHz >= 55 dB, then Equalizer@6.5kHz = -7 dB. # If HearingThresholdLevel@8kHz >= 60 dB, then Equalizer@8kHz = -10 dB. ====Crossover==== # Set CrossoverFreq1 = 0.313 Hz. # If HearingThresholdLevelAvg(Freq250, Freq500, Freq1000 Hz) <= 30 dB, then CrossoverFreq2 = 0.938 Hz. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq1000 Hz) > 30 dB, then CrossoverFreq2 = 1.063 Hz. # If HearingThresholdLevelAvg(Freq2000, Freq4000 Hz) >= 45 dB, then CrossoverFreq3 = 5.313 Hz. ====Noise Reduction==== Pre-conditions: * In Audiogram, frequencies 250, 500 and 750 Hz must exist by either user input or extrapolation/interpolation. Settings: # If HearingThresholdLevelAvg(Freq250, Freq500, Freq750 Hz) <= 45 dB, then NoiseReduction = 'medium (9 dB)'. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq750 Hz) > 45 dB and <= 55 dB, then NoiseReduction = 'low (6 dB)'. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq750 Hz) > 55 dB and <= 60 dB, then NoiseReduction = 'minimum (3 dB)'. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq750 Hz) > 60 dB, then NoiseReduction = 'off (0 dB)'. ====Feeback Canceller==== # Feedback Canceller = On. ====Soft Gain==== Pre-conditions: * In Audiogram, frequency 6 kHz must exist by either user input or interpolation. Settings: # Channel 1: #* If HearingThresholdLevel@Freq250Hz <= 20 dB, Ch1SoftGain = 4 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 20 dB and <= 40 dB, Ch1SoftGain = 10 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 40 dB and <= 55 dB, Ch1SoftGain = 14 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 55 dB and <= 65 dB, Ch1SoftGain = 21 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 65 dB and <= 79 dB, Ch1SoftGain = 26 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 79 dB, Ch1SoftGain = 34 dB. # Channel 2: #* If HearingThresholdLevelAvg(Freq500Hz, Freq1000 Hz) <= 29 dB, Ch2SoftGain = 14 dB. #* ElseIf HearingThresholdLevelAvg(Freq500Hz, Freq1000 Hz) > 29 dB and <= 45 dB, Ch2SoftGain = 18 dB. #* ElseIf HearingThresholdLevelAvg(Freq500Hz, Freq1000 Hz) > 45 dB and <= 55 dB, Ch2SoftGain = 20 dB. #* ElseIf HearingThresholdLevelAvg(Freq500Hz, Freq1000 Hz) > 55 dB and <= 65 dB, Ch2SoftGain = 22 dB. #* ElseIf HearingThresholdLevelAvg(Freq500Hz, Freq1000 Hz) > 65 dB and <= 79 dB, Ch2SoftGain = 30 dB. #* ElseIf HearingThresholdLevelAvg(Freq500Hz, Freq1000 Hz) > 79 dB, Ch2SoftGain = 36 dB. # Channel 3: #* If HearingThresholdLevel@Freq2000Hz <= 40 dB, Ch3SoftGain = 20 dB. #* ElseIf HearingThresholdLevel@Freq2000Hz > 40 dB and <= 55 dB, Ch3SoftGain = 26 dB. #* ElseIf HearingThresholdLevel@Freq2000Hz > 55 dB and <= 65 dB, Ch3SoftGain = 32 dB. #* ElseIf HearingThresholdLevel@Freq2000Hz > 65 dB and <= 79 dB, Ch3SoftGain = 34 dB. #* ElseIf HearingThresholdLevel@Freq2000Hz > 79 dB, Ch3SoftGain = 38 dB. # Channel 4: #* If HearingThresholdLevelAvg(Freq4000, Freq6000 Hz) <= 45 dB, Ch4SoftGain = 16 dB. #* ElseIf HearingThresholdLevelAvg(Freq4000, Freq6000 Hz) > 45 and <= 55 dB, Ch4SoftGain = 22 dB. #* ElseIf HearingThresholdLevelAvg(Freq4000, Freq6000 Hz) > 55 and <= 65 dB, Ch4SoftGain = 26 dB. #* ElseIf HearingThresholdLevelAvg(Freq4000, Freq6000 Hz) > 65 and <= 79 dB, Ch4SoftGain = 28 dB. #* ElseIf HearingThresholdLevelAvg(Freq4000, Freq6000 Hz) > 79 dB, Ch4SoftGain = 30 dB. ====Expansion Threshold==== Pre-conditions: * In Audiogram, frequency 250 Hz must exist by either user input or extrapolation. Settings: # If HearingThresholdLevelAvg(Freq250, Freq500 Hz) <= 40 dB, then Expansion(all channels) = 40 dB. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500 Hz) > 40 dB and <= 50 dB, then Expansion(all channels) = 34 dB. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500 Hz) > 50 dB and <= 60 dB, then Expansion(all channels) = 26 dB. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500 Hz) > 60 dB, then Expansion(all channels) = 20 dB. ====Expansion Ratio==== Pre-conditions: * In Audiogram, frequency 250 Hz must exist by either user input or extrapolation. Settings: # If HearingThresholdLevelAvg(Freq250, Freq500 Hz) <= 50 dB, then ExpansionRatio(all channels) = 1:3. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500 Hz) > 50 dB, then ExpansionRatio(all channels) = 1:2. ====Gain & User Volume Control==== Pre-conditions: * In Audiogram, frequency 250 Hz must exist by either user input or extrapolation. Settings for Gain Control: # If HearingThresholdLevelAvg(Freq250, Freq500, Freq1000 Hz) <= 30 dB, then GainControl = -24dB. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq1000 Hz) > 30 dB and <= 55 dB, then GainControl = -20dB. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq1000 Hz) > 55 dB and <= 79 dB, then GainControl = -18dB. # ElseIf HearingThresholdLevelAvg(Freq250, Freq500, Freq1000 Hz) > 79 dB, then GainControl = -0dB. Settings for User Volume Control: # If HearingThresholdLevelAvg(Freq1000, Freq2000 Hz) <= 40 dB, then UserVolControl = 50%. # ElseIf HearingThresholdLevelAvg(Freq1000, Freq2000 Hz) > 40 dB and <= 80 dB, then UserVolControl = 75%. # ElseIf HearingThresholdLevelAvg(Freq1000, Freq2000 Hz) > 80 dB, then UserVolControl = 100%. ====Compression==== Pre-conditions: * In Audiogram, frequencies 250 and 6000 Hz must exist by either user input or extrapolation. Settings: # Channel 1: #* If HearingThresholdLevel@Freq250Hz <= 35 dB, then Ch1CompressionRatio = 1.7:1, Ch1LowTK = 40 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 35 dB and <= 44 dB, then Ch1CompressionRatio = 1.6:1, Ch1LowTK = 48 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 44 dB and <= 55 dB, then Ch1CompressionRatio = 1.5:1, Ch1LowTK = 50 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 55 dB and <= 65 dB, then Ch1CompressionRatio = 1.4:1, Ch1LowTK = 52 dB. #* ElseIf HearingThresholdLevel@Freq250Hz > 65 dB, then Ch1CompressionRatio = 1.3:1, Ch1LowTK = 54 dB. # Channel 2: #* If HearingThresholdLevelAvg(Freq500, Freq750 Hz) <= 35 dB, then Ch2CompressionRatio = 1.7:1, Ch2LowTK = 46 dB. #* ElseIf HearingThresholdLevelAvg(Freq500, Freq750 Hz) > 35 dB and <= 55 dB, then Ch2CompressionRatio = 1.5:1, Ch2LowTK = 50 dB. #* ElseIf HearingThresholdLevelAvg(Freq500, Freq750 Hz) > 54 dB and <= 65 dB, then Ch2CompressionRatio = 1.4:1, Ch2LowTK = 55 dB. #* ElseIf HearingThresholdLevelAvg(Freq500, Freq750 Hz) > 65 dB, then Ch2CompressionRatio = 1.3:1, Ch2LowTK = 58 dB. # Channel 3: #* If HearingThresholdLevelAvg(Freq2000, Freq4000, Freq6000 Hz) < 40 dB, then Ch3CompressionRatio = 1.3:1, Ch3LowTK = 54 dB. #* ElseIf HearingThresholdLevelAvg(Freq2000, Freq4000, Freq6000 Hz) >= 40 dB, then Ch3CompressionRatio = 1.3:1, Ch3LowTK = 60 dB. # Channel 4: #* If HearingThresholdLevelAvg(Freq6000, Freq8000 Hz) < 40 dB, then Ch4CompressionRatio = 1.4:1, Ch4LowTK = 52 dB. #* ElseIf HearingThresholdLevelAvg(Freq6000, Freq8000 Hz) >= 40 dB, then Ch4CompressionRatio = 1.3:1, Ch4LowTK = 56 dB. ==Notation== ^ Avg | Average | ^ Ch | Channel | ^ dB | Decibels | ^ Freq | Frequency | ^ HTL | Hearing Threshold Level | ^ Hz | Hertz | ^ kHz | KiloHertz | ^ SRT | Speech Reception Threshold | ^ TK | Threshold Kneepoint |