A sound card based multi-channel frequency measurement system
نویسندگان
چکیده
منابع مشابه
Calibration methods for a multi-channel multi-frequency EIT system.
Multi-channel multi-frequency electrical impedance tomography (EIT) systems require a careful calibration to minimize systematic errors. We describe novel calibration methods for the recently developed KHU Mark1 EIT system. Current source calibration includes maximization of output resistance and minimization of output capacitance using multiple generalized impedance converters. Phase and gain ...
متن کاملTomographic Imaging Using Multi-Channel Low-Frequency Ultrasonic Measurement Systems
Multi-element ultrasonic transducer arrays open the possibility for rapid and flexible tomographic imaging systems. By electronic switching of the individual array elements, different schemes of reflection tomography and transmission tomography can be realized. This contribution firstly introduces general tomographic measurement principles to some detail. It then describes two multi-channel low...
متن کاملLoad-Frequency Control: a GA based Bayesian Networks Multi-agent System
Bayesian Networks (BN) provides a robust probabilistic method of reasoning under uncertainty. They have been successfully applied in a variety of real-world tasks but they have received little attention in the area of load-frequency control (LFC). In practice, LFC systems use proportional-integral controllers. However since these controllers are designed using a linear model, the nonlinearities...
متن کاملAn Open-Source Electroacoustic Measurement System Part 2: Sound Card Setup, System Characterization and a few more Examples
The goal of this work is to provide a practical test instrument based on Open Source software (GNU Octave) [1]. In addition to providing an immediately accessible platform, we hope that this spurs reader experimentation and investigation. By using the simple programs provided, the reader will learn the inner workings of acoustic measurement and computation. We were pleased to discover that a fe...
متن کاملSemi-Blind Channel Estimation based on subspace modeling for Multi-user Massive MIMO system
Channel estimation is an essential task to fully exploit the advantages of the massive MIMO systems. In this paper, we propose a semi-blind downlink channel estimation method for massive MIMO system. We suggest a new modeling for the channel matrix subspace. Based on the low-rankness property, we have prposed an algorithm to estimate the channel matrix subspace. In the next step, using o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal Applied Physics
سال: 2006
ISSN: 1286-0042,1286-0050
DOI: 10.1051/epjap:2006020