Wave-canceling acoustic metarod architected with single material building blocks

Efficient wave-based acoustic material design optimization

We present a novel approach for optimizing acoustic parameters using sensitivity analysis for computer-aided design and analysis of architectural models. Our approach builds on recent low-dispersion wave-based acoustic solvers that can accurately compute the pressure field in large models. We present an efficient technique to compute the gradient of the pressure field using automatic differenti...

Supplementary Material: Discovering the Building Blocks of Atomistic Systems

The length of SOAP vectors is determined by a radial basis cutoff nmax and an angular basis (spherical harmonic) cutoff lmax. We tuned the SOAP parameters to produce the best predictive results for GB energy using a grid search over radial cutoff values from 3.5 : 0.5 : 6.0 (from next-nearest neighbor shell up to fifth-nearest neighbors), lmax ∈ [8, 20], and nmax ∈ [8, 20]. The best performance...

Acoustic Noise and Echo Canceling with Microphone Array

A novel method of performing acoustic echo cancelling using microphone arrays is presented. The method employs a digital self-calibrating microphone system. The calibration process is a simple indirect on-site calibration that adapts to the particulars of the acoustic environment and the electronic equipment in use. Primarily intended for handsfree telephones in automobiles, the method simultan...

Ultrananocrystalline Diamond as Material for Surface Acoustic Wave Devices

Evaluation of Updating Methods in Building Blocks Dataset

With the increasing use of spatial data in daily life, the production of this data from diverse information sources with different precision and scales has grown widely. Generating new data requires a great deal of time and money. Therefore, one solution is to reduce costs is to update the old data at different scales using new data (produced on a similar scale). One approach to updating data i...