NOISE-MASKING TONE
- Noise-masking tone: a tone at Bark frequency g energy
ET (dB) masks noise at Bark frequency b if the
noise energy is below the threshold:
TN(b) = ET - 2.025 - 0.17g + Sm(b-g) (dB SPL)
- Masking thresholds are commonly referred to as Bark scale functions
of just noticeable differences (JND).
Key points:
- Thresholds are not symmetric.
- Thresholds depend on the nature of the noise and the sound.