Review of wideband speech noise reduction techniques

Malay Gupta, Chris Forrester, Sean Simmons

Abstract


Some of the significant wideband noise reduction techniques that help wireless phone designers to overcome the challenge of wideband noise in these devices are discussed. A wideband signal creates challenges, as it has a significant amount of consonant energy in addition to vowel sounds. Consonants are low in intensity when compared to the voiced low frequency content of the signal and have a noise-like structure, making them prone to noise distortions. The increased susceptibility of wideband systems for noise distortions need careful development of noise reduction algorithms for wideband. Algorithm developers need to modify the existing noise reduction algorithms for wideband applications or account for structural differences between narrowband and wideband signals and device different algorithmic strategy for wideband signals. They need to take these measures to develop algorithms for wideband systems.

Keywords


Acoustic noise measurement; Linguistics; Telecommunication equipment; Low frequency; Narrow bands; Noise distortions; Noise reduction algorithms; Noise reduction technique; Structural differences; Vowel sounds; Wide-band; Wideband applications; Wideband noise; Wideband signals; Wideband speech; Wideband systems; Wireless phones

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