AES Store

Journal Forum

Reflecting on Reflections - June 2014

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

Warped DFT Based Perceptual Noise Reduction System

This paper considers a novel application of the Warped Discrete Fourier Transform in single channel noise reduction system. Namely, the WDFT is simultaneously the basis for spectral weighting and psychoacoustic model, thus allowing overall system to operate strictly in the critical band domain. The warped transform allows non-uniform allocation of the z transform frequency samples in good accordance with the Bark scale. Thus the psychoacoustic modeling is more accurate than in the DFT-based solutions and the subjective quality of enhanced speech increases. The noise suppression algorithm utilizes the majority of currently most advanced ideas in perceptually motivated spectral weighting. Its especial advantage is in the fact that the masking threshold is directly involved into the weighting rule.

AES Convention: Paper Number:
Publication Date:
Session Subject:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society