A Parallel DSP architecture running Genetic Algorithms applied to acoustic noise cancellation
نویسندگان
چکیده
This paper addresses the problem of actively control acoustic noise in ducts through the application of genetic algorithm. Conventional techniques, like adaptive or classical control, have convergence problems due to the acoustic feedback, propagation delay and secondary paths. The software was designed to work in a parallel DSP TMS320C44 architecture, managing real time interrupts and communication with a shared memory. An UNIX simulator was developed with a simplified model to test the software. The noise reduction obtained in simulations is around 40 dB and the experimental results is 20 dB down.
منابع مشابه
Active Noise Control in Ducts Using Genetic Algorithms
This paper addresses the problem of actively control acoustic noise in ducts through the application of genetic algorithm and genetic programming (termed GENETIC CONTROL). Genetic programming is applied to structure a control strategy and genetic algorithm to adapt the resulting model parameters in real time. For application in real time situations, a gain/delay model was finally coded in the c...
متن کاملAcoustic Echo Cancellation: Dual Architecture Implementation
Problem statement: With the rise in mobile communication, it is becoming more frequent to use a communication device in an enclosed noisy environment, such as a subway or in a lobby. In this setting however, the received microphone is severely degraded by the echo from the speaker and background noise. The audio processing necessary to clarify the desired speech can be broken down into two part...
متن کاملA New Approach to Solve N-Queen Problem with Parallel Genetic Algorithm
Over the past few decades great efforts were made to solve uncertain hybrid optimization problems. The n-Queen problem is one of such problems that many solutions have been proposed for. The traditional methods to solve this problem are exponential in terms of runtime and are not acceptable in terms of space and memory complexity. In this study, parallel genetic algorithms are proposed to solve...
متن کاملAcoustic-Echo Cancellation Software for Hands-Free Wireless Systems
This note describes the DSP implementation of a full-duplex acoustic-echo cancellation (AEC) software. This software is based on the normalized least mean square (NLMS) algorithm. The algorithm includes active-channel and double-talk detection. This software was implemented on a TMS320C54x digital signal processor (DSP) in assembly language. It requires few resources in terms of million instruc...
متن کاملUltra-Low-Energy DSP Processor Design for Many-Core Parallel Applications
Background and Objectives: Digital signal processors are widely used in energy constrained applications in which battery lifetime is a critical concern. Accordingly, designing ultra-low-energy processors is a major concern. In this work and in the first step, we propose a sub-threshold DSP processor. Methods: As our baseline architecture, we use a modified version of an existing ultra-low-power...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002