Abstract—Digitalization in cinema projection has promoted a
more efficient monitoring and projection systems, this allows
improving supervision and projection status worldwide.
Nevertheless, the monitoring systems do not include the ability
to detect audio failures. In this paper a power spectrum density
model for a 5.1 audio cinema system is proposed. The model was
determined by using data from a DSP system located into a
demo projection hall. The DSP algorithm performs the
white-noise emission, data acquisition, feature extraction and
failure classification routines. The FFT and power spectrum
density algorithms allow characterizing non-failure and failure
sound system behaviors. The model is able to classify low and
high levels of sound pressure, the absence of specific channels, as
well as the missing of low, mid and high drivers at frontal and
sub-woofer channels.
Index Terms—FFT, audio system, power spectrum density,
digital signal processor.
G. M. Chávez-Campos is with the Department of Electronics Engineering,
TecNM Instituto Tecnológico de Morelia, Av. Tecnológico 1500., Mexico
(e-mail: gmarx_cc@itmorelia.edu.mx).
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Cite:Iván Luna-Sánchez, Gerardo M. Chávez-Campos, Adriana C. Téllez-Anguiano, Enrique Reyes-Archundia, and Arturo Méndez-Patiño, "A Power Spectrum Density Model for 5.1 Audio Cinema System Using the Fast Fourier Transform," International Journal of Information and Electronics Engineering vol. 6, no. 5, pp. 326-330, 2016.
