Multi microphone Signal Processing Technique to Remove Room Reverberation with Unbiased Coherent-To-Diffuse Power Ratio Estimation
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 11
Abstract
In everyday humans encounter different types of speech communication applications, such as hands-free mobile telephony, voice-controlled systems, hearing aids etc, the recorded microphone signals are corrupted by background noise, room reverberation and far-end echo signals. The signal degradation can lead to total unintelligibility of the original speech signal and degrades the performance of automatic speech recognition systems. In this project the estimation of frequency and time-dependent coherent-to-diffuse power ratio (CDR) from the measured spatial coherence between two omni directional microphones were investigated. From traditional methods for unbiased CDR estimators it is shown that knowledge of either direction of arrival (DOA) of the target source or the coherence of noise field is sufficient for unbiased CDR estimation. A CDR-based dereverberation system is presented and evaluated using signal-based quality measures as well as automatic speech recognition accuracy.
Authors and Affiliations
Nikhil S
Keywords
Related Articles
- EP ID EP22783
- DOI -
- Views 216
- Downloads 3
Analysis of Preamble and Synchronization Errors Estimation in Wireless OFDM Communications
Global mobile data usage increase by almost threefold [4] in the year 2010 . This increased data usage is from the rise in the number of consumer electronic devices that rely on wireless standards such as IEEE802.11 (Wi...
A Review Paper on PSO and GA Based Optimization for Vehicle Routing Problem
The vehicle routing problem is basically originated from the truck dispatching problem. The VRP is used to design optimal set of routes to serve a given number of customers with a fleet of vehicles. The VRP plays an imp...
Speed Control of Brushless DC Motor Using Proportional Integral Controller
Ease control and high power density are the two main reasons for using brushless DC motor in wide range of industrial applications. In general the brushless DC motors are controlled using power Semiconductor bridge. So...
Survey Paper- Distributed Duplication of Data and Reliability
Data deduplication is a method for removing multiple copies of same data, and has been widely used in cloud storage to reduce storage space and uploading speed. However, there is only one copy for each file stored in cl...
An Optimized Modified Booth Recoder for Efficient Design of the Add-Multiply Operator
Modern consumer electronics make extensive use of Digital Signal Processing (DSP) providing custom accelerators for the domains of multimedia, communications etc. Typical DSP applications carry out a large number of ari...