Cumulant-based cubic difference tone (CDT) detectors for otoacoustic emissions (OAE) signals

Ananthram Swami; Preeti Rao

doi:10.1117/12.190843

28 October 1994 Cumulant-based cubic difference tone (CDT) detectors for otoacoustic emissions (OAE) signals

Ananthram Swami, Preeti Rao

Proceedings Volume 2296, Advanced Signal Processing: Algorithms, Architectures, and Implementations V; (1994) https://doi.org/10.1117/12.190843
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Interactions among spontaneous otoacoustic emissions (SOEs), which are narrow-band signals emitted by the cochlea, include the cubic difference tone (CDT) that occurs at frequency 2f₁ - f₂ due to the nonlinear coupling of primary SOEs at f₁ and f₂. We show that appropriately defined trispectra and tricoherence may be used to detect the CDTs. OAE signals are also characterized by temporal variations in the amplitudes and frequencies; this leads to polynomial phase models, and multiplicative noise processes; we give closed-form expressions for the large sample CRLB for the parameters of the resulting model. We also consider cyclic approaches, and we compare polyperiodogram and periodogram based approaches for the detection of arbitrary frequency coupling laws. Some of the techniques are validated against real data.

Citation Download Citation

Ananthram Swami and Preeti Rao "Cumulant-based cubic difference tone (CDT) detectors for otoacoustic emissions (OAE) signals", Proc. SPIE 2296, Advanced Signal Processing: Algorithms, Architectures, and Implementations V, (28 October 1994); https://doi.org/10.1117/12.190843

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