AES Store

Journal Forum

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

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

Enhanced Interchannel Correlation (ICC) Synthesis for Spatial Audio Coding

In spatial audio codings, Interchannel Correlation (ICC) synthesis is implemented in two different ways. One uses both ICC and phase parameters, and the other uses only ICC. In the latter, ICC is estimated as a real part of the normalized cross-correlation coefficient between two channels and thus can result in a negative value. Conventional methods assume that ambient components mixed to two output channels are in anti-phase, while the primary signals are assumed to be in phase. When a negative-valued ICC is encountered, this assumption can cause excessive ambient mixing. To solve this problem, we propose a new ICC synthesis method based on an assumption that the primary signals are in anti-phase when negative ICCs are indicated. We first investigate problematic cases of negative ICC synthesis in the conventional methods. Later, we propose a new upmix matrix that satisfies the assumption for the primary components in a negative ICC environment. The effectiveness of the proposed method was verified by computer simulations and subjective listening tests

Authors:
Affiliations:
AES Conference:
Paper Number:
Publication Date:
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