The DSP module includes an audio equalization feature that can boost or attenuate the higher-pitched audio. This adjustment can compensate for poor receive audio quality. Follow the procedure below to determine the proper Audio Equalization Setting:
The best way is to listen to the received audio in the HSP handset (not the HSP speaker, unless a high-quality external speaker is connected).
- Monitor the receive audio in the HSP handset.
- If the audio sounds like it lacks treble, the high frequencies can be boosted (boost).
- If the signal sounds too bright or harsh, the high frequencies can be attenuated (cut).
- There are 3 steps of boost and 3 steps of cut plus the default flat setting. Move the adjustment 1 step at a time and recheck for best sound.