1. Measurement of OSPL90
OSPL90 (SSPL90)
- Output (Saturation) Sound Pressure Level
- Using a 90 dB input level to the HA mic
- VC = Full-on
- Measure over range 200–5000 Hz
Forces HA to show the loudest sound it can generate
How use?
- May relate to HA matrix (1st number), i.e., 114/40/15
- Relates directly to UCL when expressed in SPL