Multi-Microphone Noise Reduction - Theoretical Optimum and Practical Realization
نویسندگان
چکیده
In speech processing systems with large speaker to microphone distance such as hearing aids or hands-free telephony the recorded speech signal is often heavily corrupted by additive acoustic background noise. Microphone arrays can significantly improve the received speech quality by extracting the desired speech source and suppressing disturbing background noise and reverberation. High performance array processing algorithms exploit the spatial characteristics of the sound field as well as the time and frequency dependent SNR.
منابع مشابه
بررسی میزان کاهندگی صدای وسایل حفاظت شنوایی برمبنای روش میکروفن داخل گوش MIRE در شرایط آزمایشگاهی
Introduction: Nominal noise reduction rate of the earmuff manufacturers can be different compared with the actual attenuation rate. The present study aimed to determine the actual noise reduction rate of common hearing protection devices using microphone in real ear method. Materials and Methods: In this study, five brands of common earmuffs used in Iranian industries were investigated on 30...
متن کاملOptimum Microphone Array for Hands-free Devices in a Car
Nowadays, hands-free devices for cars is a hot technology that evolves very fast, providing new and advanced features to the users. However, the speech quality in such devices can be significantly degraded by different types of noise and interfering signals, having stronger impact in the person listening the speech acquired inside the car. Microphone arrays enable noise reduction by means of be...
متن کاملارزیابی میزان کاهندگی صدای گوشی های ایرماف رایج برمبنای روش میدانی میکروفن داخل گوش در محیط های کاری
Background and aims Nominal noise reduction rating of the earmuff manufacturers can be different compared with the actual noise attenuation rating. The current study aimed to determine the actual noise reduction rate of current hearing protection devices in the real workplaces using a field microphone in real ear method (FMIRE). Methods: In this cross-sectional study, five common earmuffs we...
متن کاملFabrication and investigation of a transparent and flexible loudspeaker and microphone based on carbon nanotube
Transparent acoustic sensors and actuators are a new generation of acoustic transducers that can create an evolution in the microphone and loudspeakers industries. These transducers with properties like transparency, flexibility, flatness, very low weight and thickness have a great potential for various applications like public speakers, active noise cancelation systems, displays, cell phones a...
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 2003