Effect of Number of LPCs and Formant Deletion Methods of Inverse Filtering on Acoustic Parameters of Voice

This paper presents a case study of a language-impaired child who signaled the distinction between English singular and plural using suprasegmental cues rather than the usual segmental form used within the parent language. Acoustic analyses performed within the first study in the paper revealed that the suprasegmental features used to maintain this distinction included various duration, fundamental frequency, and intensity parameters. Acoustic analyses Were also performed on a set of matched two- and four-item plural forms within a second study. The results of these analyses indicated that the same acoustic parameters were used to distinguish two-item plural forms from four-item plural forms. This case of linguistic creativity is offered as further evidence in support of the model of language acquisition that emphasizes the active role children take in the acquisition process. Additionally, the phonological, morphological, and psycholinguistic factors that may contribute to such rule invention are discussed.

Download Full-text

Modelling Of Transport And Capture Of Particles In A Porous Medium

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.11.56-60 ◽

2019 ◽

pp. 56-60

Keyword(s):

Porous Medium ◽

Asymptotic Solution ◽

Retention Mechanism ◽

Inverse Filtering ◽

Underground Structures ◽

Loose Soil ◽

Monodisperse Suspension ◽

Homogeneous Porous Medium ◽

Model Equations ◽

Pass Through

The study of the transport and capture of particles moving in a fluid flow in a porous medium is an important problem of underground hydromechanics, which occurs when strengthening loose soil and creating watertight partitions for building tunnels and underground structures. A one-dimensional mathematical model of long-term deep filtration of a monodisperse suspension in a homogeneous porous medium with a dimensional particle retention mechanism is considered. It is assumed that the particles freely pass through large pores and get stuck at the inlet of small pores whose diameter is smaller than the particle size. The model takes into account the change in the permeability of the porous medium and the permissible flow through the pores with increasing concentration of retained particles. A new spatial variable obtained by a special coordinate transformation in model equations is small at any time at each point of the porous medium. A global asymptotic solution of the model equations is constructed by the method of series expansion in a small parameter. The asymptotics found is everywhere close to a numerical solution. Global asymptotic solution can be used to solve the inverse filtering problem and when planning laboratory experiments.

Download Full-text

Excess Thermo Acoustic Parameters in 1,4-Dioxane With 1-Pentanol Binary System

International Journal of Scientific Research ◽

10.15373/22778179/june2014/140 ◽

2012 ◽

Vol 3 (6) ◽

pp. 415-418

Author(s):

Anil Kumar K ◽

◽

Dr Srinivasu Ch Dr Srinivasu Ch

Keyword(s):

Binary System ◽

Acoustic Parameters

Download Full-text

An Improved Inverse Filtering Method for Parametric Spectral Estimation

1991 American Control Conference ◽

10.23919/acc.1991.4791923 ◽

1991 ◽

Author(s):

Chang-Yung Chi ◽

Diing Wang

Keyword(s):

Spectral Estimation ◽

Inverse Filtering ◽

Filtering Method

Download Full-text

THE INFLUENCE OF ROOM ACOUSTIC PARAMETERS ON THE PERCEPTION OF ROOM CHARACTERISTICS

Akustika ◽

10.36336/akustika20203728 ◽

2020 ◽

pp. 28

Author(s):

Alicja Jasińska ◽

Maurycy Kin

Keyword(s):

Standard Deviation ◽

Subjective Evaluation ◽

Strength Parameter ◽

Acoustic Parameters ◽

Sound Sources ◽

Different Types

The article presents the possibility of identification of rooms on the basis of binaural perception. Results of subjective evaluation were compared with the values of sound strength, G. A previously unknown sound term was introduced: the strength of spatial impression as the inverse of standard deviation of the results obtained. It turned out that the results presenting the sound strength parameter can be correlated with the subjective evaluation of the spatial impression, which is the size of the room. It can be helpful in the process of room identification, probably due to the reverberation impression in the room. Authors plan to continue the study with more rooms and different types of sound sources.

Download Full-text

Shallow-Water Reverberation and Seabottom Acoustic Parameters

10.21236/ada625480 ◽

2001 ◽

Author(s):

J. X. Zhou

Keyword(s):

Shallow Water ◽

Acoustic Parameters

Download Full-text

Acoustic Reconstruction of Eszterháza Opera House Following New Archival Research

Applied Sciences ◽

10.3390/app10248817 ◽

2020 ◽

Vol 10 (24) ◽

pp. 8817

Author(s):

Lamberto Tronchin ◽

Francesca Merli ◽

Marco Dolci

Keyword(s):

3D Model ◽

18Th Century ◽

Second World War ◽

World War ◽

National Library ◽

Acoustic Parameters ◽

Speech Transmission ◽

The Will ◽

Opera House ◽

Second World

The Eszterháza Opera House was a theatre built by the will of the Hungarian Prince Nikolaus Esterházy in the second half of the 18th century that had to compete in greatness and grandeur against Austrian Empire. The composer that inextricably linked his name to this theatre was Haydn that served the prince and composed pieces for him for many years. The Opera House disappeared from the palace complex maps around 1865 and was destroyed permanently during the Second World War. This study aims to reconstruct the original shape and materials of the theatre, thanks to the documents founded by researchers in the library of the Esterházy family at Forchtenstein, the Hungarian National Library, and analyze its acoustic behavior. With the 3D model of the theatre, acoustic simulations were performed using the architectural acoustic software Ramsete to understand its acoustical characteristics and if the architecture of the Eszterháza Opera House could favor the Prince’s listening. The obtained results show that the union between the large volume of the theatre and the reflective materials makes the Opera House a reverberant space. The acoustic parameters are considered acoustically favorable both for the music and for the speech transmission too. Moreover, the results confirm that the geometry and the shape of the Eszterháza Opera House favored the Prince’s view and listening, amplifying onstage voices and focusing the sound into his box.

Download Full-text