Frequency Masking

Question: Do receptors interfere with each other?

• Experiment: Play 1 kHz tone (maskingtone) at fixed level (60 dB). Play test tone at a different level (e.g., 1.1kHz), and raise level until just distinguishable.

• Vary the frequency of the test tone and plot the threshold when it becomes audible:

• Repeat for various frequencies of masking tones