Residual Inhibition of 40 Hz Burst Sound in Tinnitus Patients

Broadband acoustic stimulus (125 Hz-12 kHz) amplitude-modulated at 40 Hz with a 50% duty cycle. A polynomial regression and FFT-based algorithm applies individualized frequency weighting, combining population data (70%) and patient-specific responses (30%). Delivered for 60 seconds at 10 dB above the individual minimum masking level (MML).

Pure tone stimulus at the optimized frequency (matched to tinnitus characteristics or high-frequency carrier), amplitude-modulated at 40 Hz with a 50% duty cycle. Delivered for 60 seconds at 10 dB above MML.

Continuous broadband noise spanning 125 Hz-12 kHz without 40 Hz modulation. Delivered for 60 seconds at 10 dB above MML as an active control condition.