Title :
Two-Microphone Kepstrum Approach to Real-Time Speech Enhancement Methods
Author :
Jeong, J. ; Moir, T.J.
Author_Institution :
Inst. of Inf. & Math. Sci., Massey Univ., North Shore
Abstract :
This paper presents a real-time kepstrum analysis algorithm which gives improvement of the SNR of speech contaminated with additive nonstationary noise. The kepstrum method (complex cepstrum) is applied to the front-end of a conventional speech enhancement method. The test, applied to the modified Griffith and Jim adaptive beamformer, shows an improvement of 6.55dB during speech and nonstationary noise periods. Experiments on a 20cm broadside microphone configuration are implemented in realtime in a real environment (indoor office)
Keywords :
real-time systems; speech enhancement; 20 cm; 6.55 dB; Griffith and Jim adaptive beamformer; additive nonstationary noise; kepstrum method; real-time kepstrum analysis; real-time speech enhancement methods; Additive noise; Algorithm design and analysis; Cepstral analysis; Cepstrum; Microphones; Signal to noise ratio; Speech analysis; Speech enhancement; Testing; Working environment noise;
Conference_Titel :
Engineering of Intelligent Systems, 2006 IEEE International Conference on
Conference_Location :
Islamabad
Print_ISBN :
1-4244-0456-8
DOI :
10.1109/ICEIS.2006.1703199
