Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"excitation signal"”.
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Characterization of the head-related transfer function using chirp and maximum length sequence excitation signals
… (or sweep) and maximum length sequence (MLS) excitation signals are used to obtain measurements of the head-related transfer function (HRTF) for the Knowles electronic manikin for acoustic research (KEMAR), resulting in remarkably low relative error between the two measurement methods. Due to …
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Low-Power System Design for Impedance-Based Structural Health Monitoring
… called the sinc method adopts a sinc wave excitation and performs traditional discrete Fourier transform (DFT) based structural condition assessment. The sinc method requires rather intensive computing and a digital-to-analog converter (DAC) to generate a sinc excitation signal. It also …
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Speech Coder using Line Spectral Frequencies of Cascaded Second Order Predictors
… auto regressive parameters, pitch parameters, excitation signals and excitation gains. The pitch predictor makes these coders sensitive to channel errors. Aiming for robustness to channel errors, we do not use pitch prediction and compensate for its lack with a better representation of the …
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An investigation of speech synthesis parameters
… type, but by other factors such as the excitation signal, phoneme target values, and durations.
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Development and Evaluation of a Hybrid Wind Instrument
… via a real-time interaction between a computed excitation model (such as the physical model of human lips interacting with a mouthpiece) and a real acoustic resonator. Attempts to produce a hybrid instrument have so far fallen short, in terms of both the accuracy and the variation in the sound …
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Stereovision Correction Using Modal Analysis
… fixed wing aircraft that is subjected to random excitation. The process begins by developing a dynamic model the estimates the behavior of a flexible stereo vision system and corrects images collected at maximum deflection. Testing of this method was performed on a flexible stereo vision system …
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Application of beam shaping in second-harmonic generation microscopy
… images has allowed significant improvement in signal-to-noise ratio, revealing the underlying helical construct of collagen fibers. Despite the versatility of this imaging technique, the light-matter interaction has largely been limited to a Gaussian illumination intensity distribution. …
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Online Measurement of Three-phase AC Power System Impedance in Synchronous Coordinates
… the possibility of system instability. A small-signal analysis that uses interface impedances defined in the synchronous frame is developed by Belkhayat at Purdue in the mid-90s to access the system stability. The system impedance varies with the operating point. Thus the impedance has to be …
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Vision Based Guidance and Flight Control in Problems of Aerial Tracking
… in order to meet the objective, an intelligent excitation signal is added to the reference commands. These guidance laws are modified to accommodate measurement noise, which is inherently available when using visual sensors and image processing algorithms associated with them. They are …
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Spatially Resolved Analysis of Flame Dynamics for the Prediction of Thermoacoustic Combustion Instabilities
… rate dynamics. By using a speaker, a sine dwell excitation to the velocity was introduced over the range of 10-400Hz. Measurements were then made of the input (inlet velocity) and output (heat release rate, or flame size) resulting in the flame transfer function. The spatial dynamics measurement …