Table 2.

Comparison of SFOAEs obtained with the conventional analysis method against those obtained with the heterodyne analysis method. The two types of analysis methods were applied to a common set of data records obtained with conventional stimuli where the stimulus frequency was kept constant (at one of three values) over a 1.43 s stimulus period. The stimulus levels were 57, 54, and 52 dB SPL for 800, 1000, and 1100 Hz, respectively. Each entry is level (in dB SPL) and phase (in cycle) of SFOAE for a particular frequency. Results from one ear of Subject No. 9.

	800 Hz	1000 Hz	1100 Hz
Heterodyne	24.8 dB; 0.511 cyc.	23.6 dB; 0.480 cyc.	22.3 dB; 0.038 cyc.
Conventional	24.5 dB; 0.524 cyc.	23.3 dB; 0.482 cyc.	22.2 dB; 0.035 cyc.