PARAMETERS | MILD | MODERATE | STRONG |
---|---|---|---|
Maximum Saturation Sound Pressure Level (SSPL) |
115dB | 125dB | 135dB |
Average OSPL 90 | 105-114 dB | 115-124 dB | 125-134 dB |
Full on acoustic gain (min.) | 45 dB | 55 dB | 65 dB |
HF-average Full on Gain (min.) | 40 dB | 50 dB | 60 dB |
Frequency range | 250 Hz-3150 Hz | 250 Hz-3150 Hz | 250 Hz-3150 Hz |
Effect on the Full on Acoustic gain of variation of battery voltage (1.5V to 1.0V) |
less than 10 dB | less than 10 dB | less than 10 dB |
Total Harmonic Distortion at 1.5V | less than 7% | less than 7% | less than 7% |
Effect of variation of battery voltage on distortion at 1.0 V |
less than 10% | less than 10% | less than 10% |
Internal noise from the hearing aid in terms of equivalent input noise level |
less than 30 dB SPL |
less than 30 dB SPL |
less than 30 dB SPL |
Battery Current | less than 5 mA | less than 5 mA | less than 5 mA |
Nominal Battery Voltage | 1.5V | 1.5V | 1.5V |