An integral equation generalizing a variety of known geometrical room acoustics modeling algorithms is presented. The formulation of the room acoustic rendering equation is adopted from computer graphics. Based on the room acoustic rendering equation, an acoustic radiance transfer method, which can handle both diffuse and nondiffuse reflections, is derived. In a case study, the method is used t...

This work investigated the relationship between acoustic parameters and phonetic features for six Mandarin affricates. The acoustic parameters under study included normalized duration, normalized amplitude, spectral energy distribution, and F2 onset of the following vowel, while the phonetic features under study included place of articulation, state of aspiration, and identity of the following ...

Males and females from many species produce distinct acoustic variations of functionally identical call types. Social behavior may be primed by sex-specific variation in acoustic features of calls. We present a series of acoustic analyses and playback experiments as methods for investigating this subject. Acoustic parameters of phee calls produced by Wied's black-tufted-ear marmosets (Callithri...

The core of the ultrasonic machining system is acoustic vibration component. Due to inconsistency assembly conditions between junction surfaces component, resonant frequency component after size adjustment horn low, and Impedance mismatch occurs in system. In this paper, considering influence conditions, optimal parameters were studied reduce surface’s on ultra-sonic horn’s performance paramete...

We introduce a modified version of the acoustic topic model, which assumes an audio signal consists of latent acoustic topics and each topic can be interpreted as a distribution over acoustic words, for unstructured audio information retrieval applications. The proposed supervised acoustic topic model is based on supervised latent Dirichlet allocation (sLDA) while the conventional acoustic topi...

decoding, the second transforms the parameters from This work is concerned with the subject of languagethe decoding module and classifies the language. identification (LID). Two central issues are addressed. The common acoustic signal preprocessor calculates The first is to analyse the trade-off between detailed 12 RASTA filtered MFCC’s, their first derivatives and acoustic modelling and robust...

This paper describes the relationships between perceived prominence as a gradual value and some acoustic-prosodic parameters. Prominence is used as an intermediate parameter in a speech synthesis system. A corpus of American English utterances was constructed by measuring and annotating various linguistic, acoustic and perceptual parameters and features. The investigation of the corpus revealed...

We propose a new approach for designing compact acoustic models particularly suited to large systems that combine multiple model sets to represent distinct acoustic conditions or languages. We show that Gaussians based on mixtures of inverse covariances (MIC) with shared parameters can be clustered using an efficient Lloyd algorithm. As a result, more compact acoustic models can be built by clu...

This study presents a comparative analysis of acoustic and perceptual cues to place of articulation in English fricatives. Acoustic parameters investigated include spectral peak location, spectral moments, locus equations, F2 onset, overall noise amplitude, relative amplitude, and fricative noise duration. Perception data were collected for isolated fricatives and fricativevowel syllables. The ...

Broadband mid-to-high frequency (0.6-18 kHz) acoustic wave propagation in shallow coastal waters (< 20 m) is influenced by a variety of oceanographic conditions. Physical parameters such as temperature and salinity as well as hydrodynamic parameters such as surface waves, tide and current can influence amplitude and travel time of signal transmissions. In this paper a unique set of simultaneous...