Finally, the Sounding Object project has pioneered the study and the application of an ecological approach to sound and perception to the design and production of interactive auditory displays based on physical models of audio production/perception [25].
Figure 8 Selective LP model of synthetic audio signal plus noise (SNR = 25 dB) with order, downsampling factor, and autocorrelation method: (a) noisy synthetic audio signal magnitude spectrum (downsampled scale), (b) PEF pole-zero plot (downsampled scale), (c) PEF magnitude response (downsampled scale), (d) PEF pole-zero plot (original scale), (e) PEF magnitude response (original scale).
Figure 7 Warped LP model of synthetic audio signal plus noise (SNR = 25 dB) with order, warping parameter, and autocorrelation method: (a) Noisy synthetic audio signal magnitude spectrum (warped scale), (b) PEF pole-zero plot (warped scale), (c) PEF magnitude response (warped scale), (d) PEF pole-zero plot (original scale), (e) PEF magnitude response (original scale).
This structure is a simplified model of an audio system consisting of several loudspeakers mounted on the lateral surface of a rectangular thin-walled box.
This result can locally be applied to every detected partial of the analyzed signal, providing a model of the audio signal close to its canonical pair.
Figure 3 Conventional LP model of synthetic audio signal plus noise (SNR = 25 dB) with order and covariance method: (a) PEF pole-zero plot, (b) PEF magnitude response.
Figure 6 Fractional 3-tap PLP model of synthetic audio signal plus noise (SNR = 25 dB): (a) PEF pole-zero plot, (b) PEF magnitude response.
Figure 2 Conventional LP model of synthetic audio signal with order and covariance method: (a) PEF pole-zero plot, (b) PEF magnitude response.
Figure 4 Constrained pole-zero LP model of synthetic audio signal plus noise (SNR = 25 dB) with order and CPZLP algorithm: (a) PEF pole-zero plot, (b) PEF magnitude response.
Figure 5 High-order LP model of synthetic audio signal plus noise (SNR = 25 dB) with order and autocorrelation method: (a) PEF pole-zero plot, (b) PEF magnitude response.
