Automatic Data Reduction with Moving Microphone

Air-noise reduction on geophone data using microphone records

This paper proposes using microphone recordings of air waves, recorded close to a geophone, to suppress air-wave noise on the geophone. The types of air-wave noise on the geophone may include air-coupled ground roll, air blast, ground-coupled air blast, and wind noise. Microphone recordings of air waves are related to ground measurements and geophone disturbances. We can thus attempt to use the...

Dual Microphone Noise Reduction Algorithms

Automatic Landing of Small Helicopters on 4 DOF Moving Platforms

In this research, an automatic control system is designed for landing of a small helicopter on a 4 DOF moving platform. The platform has three translational and one directional degree of freedom. The controller design approach is based on development of helicopter nonlinear dynamic model into the SDC (State Dependent Coefficient) form and real time solving of state dependent Riccati equation (S...

Noise Reduction using Paired-microph Microphone Arran

A wide variety of microphone arrays have been developed, and the authors have also proposed a type of equally-spaced small-scale microphone array. In this approach, a paired-microphone is selected at each frequency to design a subtractive beamformer that can estimate a noise spectrum. This paper introduces a nonequally-spaced microphone arrangement, which might give more spatial information tha...

Automatic Moving Object Segmentation with Accurate Boundaries

This paper presents a layer-model based method to segment moving objects from image sequence with accurate boundaries. The segmentation framework involves three stages: Motion seed detection, Motion layer expansion and Motion boundary refinement. In the first stage, motion seeds, which determine the amount and initial position of motion layers, are detected by corner matching between consecutiv...