2026-06-12T21:07:30+03:30 http://joasi.ir/browse.php?mag_id=16&slc_lang=fa&sid=1

16-208 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 S. Mortazavi s.mortazavi95@gmail.com M. Mokhtari-dizaji mokhtarm@modares.ac.ir HIFU technology is a non-invasive treatment method based on the conversion of acoustic energy into thermal energy focused on the target area. In this study, the effect of radiation cross- section on heat distribution in the target tissue is investigated. To investigate the effect of radiation cross- section, in this study, finite element method and COMSOL simulation software were used in the linear emission mode of ultrasonic waves. At a maximum input sound intensity of 10 W/cm2, the pressure wave equation was solved by considering thermo-viscous fluid at two cross- sections of 1.5 and 0.8 cm2. Based on the Pennes heat transfer equation, the heat field distribution in skin tissue, subcutaneous fat, and muscle was calculated. To validate the simulation results, the correlation between the results of the mathematical model the experimental method with a 95% confidence level (p<0.05) was evaluated. At an input sound intensity of 10 W/ cm2 and at a focal length of 4.5 mm from the skin surface, with an increase in cross- section from 0.8 to 1.5 cm2, the maximum sound pressure from 8.6 to 20.9 MPa and the maximum temperature from 60 to 139 °C. The results showed that the sound pressure distribution and the thermal dose of the target tissue depended on the cross-sectional area of the sound transducers. It is concluded that in order to achieve the selected treatment protocol, the treatment plan should be simulated based on radiation input and physical characteristics of the tissue. High intensity focoused ultrasound Cross- section of radiation Sound pressure distribution Thermal distribution. 2021 9 01 1 9 http://joasi.ir/article-1-208-en.pdf

16-207 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 M. Fallah mfphysics@hotmail.com H. Milani Moghaddam milani@umz.ac.ir Phonon transport of CsCaBr3 and CsCaCl3 halide perovskites was investigated to identify their potential applications in various fields including cooling and thermoelectric. Ab-initio studies of these materials were performed in their cubic phase in generalized gradient approximation. Second and third order force constants were calculated with supercell approach and phonopy and phono3py packages. Lattice constant was obtained 5.463 and 5.768 the for CsCaCl3 and CsCaBr3 respectively. From a comparison of electron density and phonon properties, it was found that the halide atom in both compounds plays an important role in phonons’ propagation, while calcium atom has a negligible role in phonon scattering and phonon group velocity. Phonon velocities of both materials at intermediate frequencies (between 2 and 4 THz) are 5000 and 3000 m/s, and their phononic lifetime is 0.2 and 0.1 ps, for CsCaCl3 and CsCaBr3, respectively. Due to the higher phonon transport of CsCaCl3 in almost frequency and with a difference of 2000 m/s in the middle frequency range, it is predicted to be more effective in applications requiring higher acoustic and thermal conductivity. However, CsCaBr3 is expected to be useful in thermoelectric applications owning to rattling motion and consequently higher phonon scattering of Cs atom in CaBr6 cages. Perovskite Phononic transport Phonon group velocity Phonon scattering Phonon lifetime. 2021 9 01 10 17 http://joasi.ir/article-1-207-en.pdf

16-204 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 A. Vafaeian amirvafa@gmail.com H. Sajedi sadjedi@shahed.ac.ir K. Borna borna@khu.ac.ir D. Alimohammadi webliographer@gmail.com P. Sarai pouya.sarai@gmail.com The main aim of this study is to investigate the importance of the 21 temporal, spectral, and cepstral features in detecting the principal Gushehs of Shur. In the present study, a dataset was created, including 173 pieces of music, consisting of six principal Gushehs of Shur Dastgāh, played by four musical instruments: Tar, Setar, Santur, and Barbat, based on Mirzaabdollah Radif (Repertoire). To investigate the significance of each temporal, spectral, cepstral feature in identifying the six principal Gushehs of Shur, the 21 musical features (extracted from the literature) were scored by using the Fisher scale. Then, the LDA classifier was trained, and then three superior and best-scored features (out of 21 ones) were selected to measure the classifier capability of six Gushehs detection for each of four instruments separately and also for all instruments. Findings show that among the 21 features, cepstral features gained the highest scores in distinguishing the six Gushehs and were better off than spectral and temporal features; but in general, none of them could distinguish the Gushehs from each other. Though, despite the acceptable efficiency of musical features in automatic detection of Western music, it is not efficient in Persian traditional music. Iranian traditional music Music information retrieval Automatic detection Musical feature extraction Classifier. 2021 9 01 18 27 http://joasi.ir/article-1-204-en.pdf

16-192 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 M. Mirbeygi m.mirbeygi@gmail.com A. Mahabadi mahabadi@shahed.ac.ir A. Ranjbar ranjbar@shahed.ac.ir Automatic speaker recognition has a wide range of applications in industrial and security systems and requires the extraction of speech signal features. The use of the feature matrix is ​​very important in real-time recognition of the speaker, and the presence of environmental and processing noise leads to a violation in the characteristics of the features and the production of recognition errors. Increasing the accuracy of recognition detection requires the noise removal process to correctly determine the energy characteristics, energy entropy, zero- crossing rate, spectral centroid, spectral spread, spectral entropy, spectral flux, and spectral roll off the signal. In designing real-time and reliable algorithms, there are critical processes of correct speech extraction, sensitivity detection, and measuring the robustness of signal parameters to eliminate noise and improve speech quality, which play a key role in improving the signal-to-noise ratio. In this paper, the classification of speech signal features for designing real-time and noise-robust speaker recognition algorithms in measuring its robustness are investigated. The proposed method of noise removal uses a binary mask with a robust feature and the experimental results of the experiments on the standard data show the rate of signal improvement to the noise of approximately 2 to 3 db. The feature matrix evaluation for the authentication system consists of mel frequency coefficient, linear prediction coefficient and, cepstrum coefficient, which has been evaluated by the Euclidean distance method in another experimental standard data set. Our proposed method achieves on overall 80% real-time recognition accuracy in noisy data set.  Classification of speech features Speaker authentication Noise-robust Speech signal Noise. 2021 9 01 28 39 http://joasi.ir/article-1-192-en.pdf

16-188 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 H. Salehi salehi_h@scu.ac.ir M. Azizi maryam.aziziphysics@gmail.com Graphene is one of the carbon nanostructures that has been considered in many industries today due to its high thermal properties. In this work, due to the high thermal conductivity and the presence of various defects during the synthesis of graphene, the simultaneous investigation of the effects of the vacancy defects and Stone-Wales to high-density defects on the thermal conductivity of graphene has been studied. This work has been used to simulate a reverse non-equilibrium molecular dynamics simulation with using Airebo potential was used to model the interactions between  all atoms, which is an empirical potential. This describes the potential of non-binding interactions by matching the behavior of inter-molecular interactions, which is here for carbon-carbon interactions, graphene is used. It also studies the phonon spectra and overlaps on the thermal conductivity of graphene nanoribbons. The results show that the thermal conductivity of graphene nanoribbons reduces both defects by a maximum of 46% for low deficit density and a minimum of 25% for maximum density, that is, decreasing the density of the defect in the thermal conductivity reduction relative to the defective nano-tubes. Graphene nanoribbons Dynamic molecular simulation Vacancy defect Stone-Wales defect Thermal conductivity. 2021 9 01 40 47 http://joasi.ir/article-1-188-en.pdf

16-209 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 S. Mohamadi shaghayeghmohamadi94@gmail.com M. Movahedin movahed.m@modares.ac.ir M. Mokhtari Dizaji Manijhem@yahoo.com Ultrasonic waves are rapidly emerging as an innovative regeneration technique, improving cell performance in tissue engineering. In this study, the optimal parameters of low intensity pulsed ultrasonic stimulation (LIPUS) waves on the testicular tissue of neonatal mice in the control and experimental groups were evaluated to improve the process of spermatogenesis and aid treatment of infertility with male causes. In the first phase of the study, the temperature was controlled to prevent thermal effects, and in the second and third phases, the optimal intensity and the optimal duty cycle of ultrasonic waves were evaluated, respectively. Histological H&E evaluations indicate that ultrasonic waves with an intensity of 0.5 W/cm2 and 40% duty cycle during 14 days of organ culture have a better effect on maintaining the structure of testicular tissue compared to other intensities and duty cycles. Additionally, LIPUS waves had a propitious influence on the enhancement of spermatogenesis in the testicular tissue of neonatal mice. Quantitative histological findings showed a significant increase in the area of ​​testicular tissue stimulated by LIPUS compared to the control group (p<0.05). Ultrasonic waves Testicular tissue Spermatogenesis. 2021 9 01 48 54 http://joasi.ir/article-1-209-en.pdf

16-203 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 M. Zabihi Nejad miladzabihi@stu.yazd.ac.ir A. Dehghan adehghan@yazd.ac.ir M. Farmani mfarmani@stu.yazd.ac.ir In this paper, we aim to implement, evaluate and validate Curle’s acoustic analogy in predicting far-field noise emitted due to the turbulent flow around a two-dimensional square geometry. Flow is considered to be incompressible with two Reynolds numbers of 46000 and 69000. Open- source software OpenFOAM is utilized for flow simulation using both k-w and large eddy simulation turbulence models. To predict far-field sound pressure levels, the Curle acoustic analogy implemented within the software and pressure fluctuations data over the surface of a square geometry have been used as one of the inputs to the Curle analogy. The average aerodynamic coefficients, mean pressure coefficients, and Strouhal number were determined and it was found that the fluctuations of  lift and drag forces, as well as the turbulence intencity are the main factors affecting the far field sound pressure level. The far-field sound pressure is well predicted by a combination of large eddy simulation and Curle’s acoustic analogy, which at two different observer locations and two Reynolds numbers of 46000 and 69000, are 90.62 and 97.8 (dB), respectively. Finally, the agreement of numerically predicted far-field sound pressure level with the experimental results indicates the efficiency of Curle’s acoustic analogy incorporated within the OpenFoam. Numerical investigation Large eddy simulation K-W turbulence models Curle’s acoustic analogy OpenFOAM software. 2021 9 01 55 69 http://joasi.ir/article-1-203-en.pdf

16-190 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 Z. Izadi zeinab.izadi65@gmail.com H. Salehi salehi_h@scu.ac.ir In this paper, the phononic and thermodynamic properties of mercury telluride (HgTe) in Zinc Blende phase have been studied. The calculations have been performed with the pseudopotantial method by using Quntume Espresso package that is based on density functional theory. The result of the band structure indicates that the bottom of the conduction band touches the top of the valence band at Г point, this giving rise to zero bandgaps. The phonon spectrum shows that this compound has a frequancy gap between 80 cm-1 and 127 cm-1. Also, the study of thermal properties shows that the heat capacity of this compound in the Zinc Blende phase in low temperatures according to experience is proportional to the third power of temperature and high temperatures reach a value of saturation that is not temperature-dependent, which is consistent with experimental facts. Mercury telluride Phononic properties Thermodynamic properties. 2021 9 01 70 77 http://joasi.ir/article-1-190-en.pdf

16-194 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 K. Rezaee kh.rezaee@meybod.ac.ir F. Ghaderi fardin76ghadery@gmail.com F. Naghavi Naghavi.f@gmail.com In contrast to other automatic pain detection methods for infants, the diagnosis of pain through sound analysis to understand the infant's condition has not received much attention. Although extracting appropriate features from infant sounds when crying leads to desirable classification results, this requires sufficient knowledge of the features acquired and an effective selection of attributes. In this paper, several descriptors are proposed for extracting discriminative information and weighting voting in feature selection. Also, the improved logistic regression method with maximum likelihood to classify the type of pain was employed. The proposed method was evaluated by an infants sound dataset. A total recognition of 96.6% has been achieved in classifying five different levels of pain sense using different types of features. The results indicate that the optimized classification is significantly more effective than similar solutions in terms of diagnostic accuracy. Challenges such as uncertainty and the high classification errors, which often occur with the application of unseen data, have been addressed due to the adaptation ability of the proposed method. The comparative analysis illustrates the fact that by using the suggested method combined with perceptual features, significant progress has been made in the performance of multilevel diagnosis. Pain recognition Infant cry Sound processing Feature extraction Weighting voting Optimized classifier. 2021 9 01 78 90 http://joasi.ir/article-1-194-en.pdf

16-220 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 A. Bahreini baahreini@gmail.com M. Talafi Noghani noghani@eng.ikiu.ac.ir M. Saghafi Yazdi msaghafi@eng.ikiu.ac.ir In recent years, the importance of noise control has dramatically increased due to noise pollution. In this study, in order to improve the acoustic performance of pure aluminum foam, 3wt% carbon nanotube (CNT) and 3wt% graphene nanoplate (GNP) were added to the pure aluminum foam, foams were made with 60% porosity by 500 microns in diameter size. Then the transmission loss in Al-3wt%CNT and Al-3wt%GNP foams were compared to that of pure aluminum foam. The paper is focused on the sound transmission loss (STL) of the pure aluminum, Al-3wt%CNT and Al-3wt%GNP foams. The results showed that the addition of 3wt%CNT and 3wt%GNP respectively had about 20 and 7 dB in sound transmission loss in comparison to the pure aluminum foam. A better performance of nanotubes in comparison to nanoplates is due to the occurrence of Thermoacoustic phenomenon in the nanotubes and as a result of conversion of acoustic energy into heat energy. Sound transmission loss Composite aluminum-carbon nanotube foam Composite aluminum-graphene nanoplate foam Thermoacoustic phenomenon. 2021 9 01 91 99 http://joasi.ir/article-1-220-en.pdf

16-215 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 A. Ghasemi Yeklangi akbarghasemi2@gmail.com S. Esmaeelzadeh Khadem khadem@modares.ac.ir Triboelectric nanogenerators are a new generation of transducers of mechanical energy to electric energy which have attracted great attention because of their high performance. In this research a new kind of triboelectric nanogenerators with a unique structure is fabricated. It can transform environment acoustic noise into electric energy. The structure of this nanogenerator is investigated with scanning electron microscopy and the existence of poly vinylidene fluoride nanofibers is verified. Furthermore, the nanogenerator has potential of use as a selfpowered microphone. Results of acoustic tests showed that putting the nanogenerator in a acoustic pressure field with 90 dB intensity and 90 Hz frequency can generate open circuit voltage of 70V peak to peak. Triboelectric Nanogenerator Acoustic waves Electrospinning Nanofibers Poly vinylidene fluride. 2021 9 01 100 104 http://joasi.ir/article-1-215-en.pdf

16-155 2026-06-12 10.1002

Journal of Acoustical Society of Iran مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2345-5748 2345-5748 7 2021 9 1 M. Majidy Nik m.majidynik@yahoo.com The propagation of sound waves in shallow water is complex and unknown due to the special conditions of the surface and bed of water bodies. In recent years, the use of a wide range of application software to recognize this effect on the propagation of sound waves to improve the performance of sonar systems has increased. In shallow water and coastal areas, the interference caused by surface and seabed reflections is very important and effective. Several methods have been developed to model the propagation of sound waves. In the present research, the method of parabolic equations by considering the frequencies of 500, 1000 and 10000 Hz for the transmitter has been used to model the propagation of sound waves in the Persian Gulf. The results showed that the effects of the seabed are the main factor attenuating the energy of sound waves. Also, the highest penetration of sound waves in the bed layers occurred at frequencies lower than 1 kHz. The interaction of sound beams with the seabed is also increased, with increasing the depth of the transmitter and as a result more loss in the transmission path is recorded. Sound waves propagation Parabolic equations Seabed loss Actup model Persian Gulf. 2021 9 01 105 113 http://joasi.ir/article-1-155-en.pdf