Reverberation Time
Analysis reverberation time in UTHM lecturer room using teoritical method and ISO 3382 measurement
... Based on Figure 6, at a frequency of 250 Hz, the value of reverberation time MAE increased in higher rate. The cause of this matter was due to the curtains position that was very close to the main window. ...
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An investigation on factors that cause error in reverberation time measurement (ISO 3382) in UTHM Lecturer Room
... predict reverberation time such as Finites Element Method (2), Boundary Element Method (3) and Ray- Tracing ...predicts reverberation time by using formulas such as Sabine (5), Eyring (6) and ...
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Increasing the Accuracy of Reverberation Time Measurement Using Wavelet Thresholding
... Reverberation time is defined as the time in seconds required by sound level to decay 60 dB after a sound source abruptly switch-off ...conventional reverberation time measurement ...
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A reverberation time aware DNN approach leveraging spatial information for microphone array dereverberation
... height). The position of the loudspeaker was at (2, 3, 1.5) meters. Both 2-microphone and 6-microphone arrays were considered. For the 2-microphone array, the posi- tions of the microphones were at (4, 1, 2) and (4, 1.2, ...
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Feed forward neural network application for classroom reverberation time estimation
... Acoustic problem is a main issues of the existing classroom due to lack of absorption of surface material. Thus, a feed forward neural network system (FFNN) for classroom Reverberation Time (RT) estimation ...
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The amount of wooden material in a closed room and its effect on the reverberation time
... interior reverberation time (RT) is reported in this ...the reverberation time (s), DR is the amount of interior wood materials used (%), and the C values were constants that ranged from ...
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Acoustic Performance and Reverberation Time of Walls Partitions in Educational Institution Classrooms
... and reverberation time, whose methodology includes data collection in 26 classrooms in three buildings, according to the specifications of ISO 16283-1 (ISO 2014) and ISO 717-1 (ISO 2013) and compiled using ...
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Investigation the capability of neural network in predicting reverberation time on classroom
... Previous literatures have proposed several methods in obtaining reverberation time in the enclosure. Most of the papers compared a variety of prediction methods. In this case, this study uses FEM analysis ...
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Measurement And Evaluation Of The Reverberation Time For Classrooms In UTEM
... Chapter 2 elaborates more about the basic terms of acoustics such as definitions and other theory. This chapter will also explain in details about reverberation time definition, terms for ...
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The Effect of Television Decors on the Change of Reverberation Time of the Studio
... Reverberation time within studio’s decor is changed because of addition of its surface to the overall surfaces of the stu- dio and also the additional absorption of its ...seems reverberation ...
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Blind estimation of reverberation time in classrooms and hospital wards
... as reverberation time (RT) are usually carried out when a room is ...perform time consuming simulations, as these can be ...blind Reverberation Time estimation, each technique has ...
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A practical system to predict the absorption coefficient, dimension and reverberation time of room using GLCM, DVP and neural network
... of reverberation time such as Sabine and Eyring equation, ray-method, and numerical method require main parameters such absorption coefficient and ...
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Prediction of classroom reverberation time using neural network
... Abstract. In this paper, an alternative method for predicting the reverberation time (RT) using neural network (NN) for classroom was designed and explored. Classroom models were created using Google ...
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The Sloan Digital Sky Survey Reverberation Mapping Project : Hα and Hβ reverberation measurements from first year spectroscopy and photometry
... present reverberation mapping results from the first year of combined spectroscopic and photo- metric observations of the Sloan Digital Sky Survey Reverberation Mapping ...recover reverberation ...
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Chirp decoder : influence of noise and reverberation
... The noise interference tests were carried out in the listening room of the Salford University acoustic research centre, with dimensions: 6.6 m × 5.8 m × 2.8 m, and average reverberation time: 0.37 s (full ...
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A Deep Water Bottom Reverberation Model Based on Ray Theory
... the reverberation intensity at 9-s time (see Fig- ure 3(a), this moment is between the second and third bottom reflection), Fig- ure 3(b) gives scatterers contribution at different locations on the ...the ...
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Space telescope and optical reverberation mapping project VIII Time variability of emission and absorption in NGC 5548 based on modeling the ultraviolet spectrum
... We model the ultraviolet spectra of the Seyfert 1 galaxy NGC 5548 obtained with the Hubble Space Telescope during the 6 month reverberation mapping campaign in 2014. Our model of the emission from NGC 5548 ...
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Helmholtz's Piano Strings: Reverberation of Ripples on the Tectorial Membrane
... same time, it is important to note that vibration energy at a particular point on the partition is not transmitted progressively to the next ...graded time delays (3 or 4 cycles) come into play, this ...
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Nonlinear Acoustic Shadow Method to Reduce Reverberation Artifact
... and reverberation wave are greatly suppressed in the image using nonlinear acoustic shadow method in Figure 5(a) compared to that of linear acoustic shadow method shown in Figure ...
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Statistical behavior of transmit antenna orientation in a reverberation chamber
... The function of stirrer is to vary the boundary condition inside the reverberation chamber. The choice of the kind of the stirrer as well as the position inside the chamber where it is fixed to operate is basic ...
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