Journal Forum

Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
4 comments

Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
9 comments

New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
1 comment

Access Journal Forum

AES Convention Papers Forum

Quality Improvement Using a Sinusoidal Model in HE-AAC

In Spectral Band Replication (SBR), a tone is often restored as a noise, which results in audible distortion. In this paper, we propose an efficient way of restoring the original tones using SBR. In the proposed algorithm, the tones are identified through a sinusoidal modeling and their frequencies are adjusted within the QMF band in order to reduce the noise floor. The proposed algorithm is perfectly compatible to the standard High-Efficiency AAC (HE-AAC) because it doesn¢¢ç¯t require additional information or operations in the decoding process. Output spectrograms were compared and listening tests were conducted to evaluate the proposed algorithm. Results confirmed the effectiveness of the proposed algorithm.

Authors:
Affiliation:
AES Convention: Paper Number:
Publication Date:
Subject:

Click to purchase paper or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

RSS Feed To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.

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