scholarly journals VIRTUAL ACOUSTIC RECONSTRUCTION OF THE GREAT HALL OF THE TYUMEN PHILHARMONIC ARCHITECTURE BASED ON ACTIVE FIELD CONTROL

2020 ◽  
Vol 22 (6) ◽  
pp. 105-118
Author(s):  
Yu. I. Isakov
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Reverberation Time ◽  
Acoustic Parameters ◽  
Control Measurement ◽  
Electronic Shell ◽  
Measurement Results ◽  
Field Control ◽  
First Time

The paper focuses on changes in the acoustic parameters of multi-purpose audience space for symphonic music without bot architectural and complete reconstruction. Old analog and modern systems with digital signal processing are analyzed using active field control (AFC). The AFC3 system from Yamaha, Moscow, Russia, installed in the Great Hall of the Tyumen Philharmonic is considered. The diagrams of early reflections are obtained by computer acoustical simulation of the Great Hall. The control measurement results confirm the effectiveness of the proposed solutions. The intrinsic reverberation time is 1.1 s. The AFC3 system provides the increase in the reverberation time up to 2.65 s. For the first time in Russia, the electronic shell is constructed for the fly-loft stage in the Tyumen Philharmonic, that allows improving the acoustical conditions for musicians.

scholarly journals A novel quasi-peak-detector for time-domain EMI-measurements

2005 ◽  
Vol 2 ◽  
pp. 27-32 ◽  
Author(s):  
F. Krug ◽  
S. Braun ◽  
P. Russer
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Measurement System ◽  
Time Domain ◽  
Electromagnetic Interference ◽  
Digital Signal ◽  
Peak Detection ◽  
Peak Detector ◽  
Measurement Results ◽  
Signal Recording

Abstract. In this paper, an advanced ultra-fast, broadband time domain EMI measurement system is described. Measurements were performed in the 30–1000MHz range. The digital signal processing of EMI measurements allows to emulate in real-time the modes of conventional analogous equipment, e.g. Peak-, Average-, RMS- and Quasi-Peak- Detector. With the presented time domain measurement system the measurement time can be reduced by a factor of 10. A novel signal recording routine for time-domain EMI (TDEMI) measurements and Quasi-Peak-Detection is described. Measurement results obtained from the investigation of a drillmachine, monitor and laptop obtained with the timedomain electromagnetic interference (TDEMI) measurement system are discussed. The results obtained with the described system have been compared with measurements performed with a conventional EMI receiver.

scholarly journals EASYDSP: PROBLEM-BASED LEARNING IN DIGITAL SIGNAL PROCESSING

2011 ◽  
Author(s):  
Kaveh Malakuti ◽  
Alexandra Branzan Albu
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Signal Analysis ◽  
Problem Based Learning ◽  
Digital Signal ◽  
Instructional Style ◽  
Time Problem ◽  
Course Format ◽  
The University ◽  
First Time

This paper presents a pilot pedagogical project that combined for the first time problem-based learning (PBL) with a lecture-based instructional style in Digital Signal Processing I. This new course format was offered during the Spring 2008 term at the University of Victoria, Canada. The PBL component was implemented via EasyDSP, a custom-designed framework for system design and signal analysis.

scholarly journals Experimental verification of preset time count rate meters based on adaptive digital signal processing algorithms

2005 ◽  
Vol 20 (2) ◽  
pp. 40-44
Author(s):  
Aleksandar Zigic
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Count Rate ◽  
Radiation Source ◽  
Pulse Generator ◽  
Background Radiation ◽  
Digital Signal ◽  
Measurement Results ◽  
Signal Processing Algorithms ◽  
Processing Algorithms

Experimental verifications of two optimized adaptive digital signal processing algorithms implemented in two pre set time count rate meters were per formed ac cording to appropriate standards. The random pulse generator realized using a personal computer, was used as an artificial radiation source for preliminary system tests and performance evaluations of the pro posed algorithms. Then measurement results for background radiation levels were obtained. Finally, measurements with a natural radiation source radioisotope 90Sr-90Y, were carried out. Measurement results, con ducted without and with radio isotopes for the specified errors of 10% and 5% showed to agree well with theoretical predictions.

Method of estimation of hidden correlation of narrowband noise signals

2019 ◽  
pp. 34-39 ◽  
Author(s):  
E.I. Chernov ◽  
N.E. Sobolev ◽  
A.A. Bondarchuk ◽  
L.E. Aristarhova
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
New Technology ◽  
Digital Signal ◽  
Measuring Instruments ◽  
Central Frequency ◽  
Pearson Criterion ◽  
Useful Signal ◽  
Band Limited ◽  
Narrowband Noise

The concept of hidden correlation of noise signals is introduced. The existence of a hidden correlation between narrowband noise signals isolated simultaneously from broadband band-limited noise is theoretically proved. A method for estimating the latent correlation of narrowband noise signals has been developed and experimentally investigated. As a result of the experiment, where a time frag ent of band-limited noise, the basis of which is shot noise, is used as the studied signal, it is established: when applying the Pearson criterion, there is practically no correlation between the signal at the Central frequency and the sum of signals at mirror frequencies; when applying the proposed method for the analysis of the same signals, a strong hidden correlation is found. The proposed method is useful for researchers, engineers and metrologists engaged in digital signal processing, as well as developers of measuring instruments using a new technology for isolating a useful signal from noise – the method of mirror noise images.

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