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In this paper, we present an objective evaluation of audio texturedness level motivated by a subjective study which emphasizes the relevance of a direct and reverse short listening time analysis. This study was based on 77 undergraduate engineering students, where the concept of audio texturedness relied on audio and image analogies. Audio texturedness evaluation of a large audio database using a...
In this paper we analyze the texturedness decision time Td needed to evaluate the texturedness level of a given audio signal. We correlate the subjective values of Td with the objective time parameter Tobs of a recently proposed audio texturedness indicator [1]. As Tobs varies, speech texturedness measures are highly variant but got low texturedness values, whereas classic audio textures and academic...
In this paper, we present a temporal entropy-based indicator that reflects the texturedness level of a given audio signal. Inspired from an image homogeneity evaluation via a multidirectional cumulative entropy computation, we similarly propose an audio signal homogeneity analysis through a direct and reverse progressive auditory information content tracking. A [0 – 5] texturedness indicator is then...
A new monotonic companding function is proposed for non-uniform lookup table (LUT) indexation used in digital predistortion (PD) of Radio Frequency (RF) power amplifiers (PA) under wideband signals. This function, designed to be robust to the input signal statistics variations, overcomes the disadvantages of optimal indexation which depends on the input back-off (IBO) operation point of the PA. Simulations...
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