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This paper presents an automatic approach for parameter training for a sparsity-based pitch estimation method that has been previously published. For this pitch estimation method, the harmonic dictionary is a key parameter that needs to be carefully prepared beforehand. In the original method, extensive human supervision and involvement are required to construct and label the dictionary. In this study,...
In this research, a small humanoid robot and a bicycle of comparable size are constructed. Like the human rider, the robot is designed to pedal, balance and steer the bicycle. We particularly focus on the design of control system for the robot to balance and steer the bicycle using the handlebar. The control system is novel that it is capable of estimating the uncertain center of gravity of the robot-bicycle...
Pitch estimation from acoustic signals is a fundamental problem in many areas of speech research. For noise-corrupted speech, reliable pitch estimation is difficult. This paper presents a study of pitch estimation in noisy speech based on robust temporal-spectral representation and sparse reconstruction. We propose to accumulate spectral peaks over consecutive time frames. Since harmonic structure...
In this paper, we propose a confidence measure for the pitch estimation method presented in a parallel paper [1]. The confidence measure is derived based on a sparse representation of the speech harmonic structure. The measurement quantitatively reflects the harmonicity associated with an estimated pitch. It is used to indicate the reliability of the results. Histogram is employed to illustrate the...
This paper presents a novel markerless augmented reality based piano teaching system, which tracks the real keyboard of piano naturally. Following the virtual hands augmented on the keyboard, beginners of piano can practice playing piano. Instead of the marker in traditional AR system, the geometrical parameters of the piano keyboard are detected to calculate the transformation matrix from keyboard...
In wireless sensor networks, ??holes?? are hardly to know its location and avoid either because of various actual geographical environments. A hole can be dynamically formed due to unbalanced deployment, failure or power exhaustion of sensors, animus interference, or physical barriers such as buildings or mountains. Hence, we hope to propose the RNG Hole Avoiding Routing protocol, RNGHAR which can...
This paper proposes an enhanced coulomb counting method based on the depth-of-discharge (DOD) to estimate the state-of-charge (SOC) and state-of-health (SOH) for valve regulated lead-acid (VRLA) batteries. The losses at different discharging currents are accounted for compensation to the releasable capacities. Furthermore, the SOH is revaluated at the depletion and fully charged states by the maximum...
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