OSCILLA USB100 Series - SPL Mode

ID: 993 / ver. 206
20
9.2 SPL mode
Air:
When calibrating an audiometer
with TDH-39, at 80 dB SPL on 250
Hz from the calibration software,
the dB level meter will also show
80 dB SPL.
If you start up the AudioConsole
software, and start a tone on 80 dB
HL, the dB level meter will also
show 105,5dB SPL,
i.e. 80dB HL + 25,5 dB (at 250 Hz)
= 105,5dB SPL
Bone condcutor:
When calibrating an audiometer
with B-71, at 50 dB VFL on 1000
Hz from the calibration software,
the dB level meter will also show
50 dB VFL
If you start up the AudioConsole
software, and start a tone on 40 dB
HL, the dB level meter will also
show 82,5 dB VFL,
i.e. 40dB HL + 42,5 dB (at 1000
Hz)
= 82,5dB VFL
80 dB SPL
=
105,5 dB SPL
=
50 dB VFL
=
82,5 dB VFL
=