Log In Sign Up

Examples of usage of nearfield acoustic holography methods for far field estimations: Part 1. CW signals

by   Mikhail B. Salin, et al.

The paper is devoted to the usage of nearfield acoustic holography methods for estimating far field of the object. An experiment was carried out in anechoic chamber. First, acoustic filed was recorded in a plane that was close to source. This signals records were used to reconstruct the far field by computation routines. Second, the signal in the far field is measured and the results are compared. Several methods are tested and research on possible reduction of the microphone array size is carried out. The most significant reduction of the measurement facility complexity is usage a linear array in stead of the planar array that is made possible due to introduced computation routines


Maximizing the Psycho-Acoustic Sweet Spot

In this work, we let the sweet spot be the region where a sound wave gen...

A "DIY" data acquisition system for acoustic field measurements under harsh conditions

Monitoring active volcanos is an ongoing and important task helping to u...

A Spatial Sampling Approach to Wave Field Synthesis: PBAP and Huygens Arrays

A simple approach to microphone- and speaker-arrays is described in whic...

Direction of Arrival Estimation of Wide-band Signals with Planar Microphone Arrays

An approach to the estimation of the Direction of Arrival (DOA) of wide-...

Developing Far-Field Speaker System Via Teacher-Student Learning

In this study, we develop the keyword spotting (KWS) and acoustic model ...

Evolutionary Map of the Universe (EMU):Compact radio sources in the SCORPIO field towards the Galactic plane

We present observations of a region of the Galactic plane taken during t...

Automatic Documentation of ICD Codes with Far-Field Speech Recognition

Documentation errors increase healthcare costs and cause unnecessary pat...