AES Munich 2009
Home Visitors Exhibitors Press Students Authors
Technical Program

Detailed Calendar

Paper Sessions



Live Sound Seminars

Exhibitor Seminars

Special Events

Student Program

Technical Tours

Technical Council

Standards Committee

Heyser Lecture

AES Munich 2009
Broadcasting Event T1

Thursday, May 7, 09:00 — 11:00

T1 - A New Downmix Algorithm Optimizing Comb Filter Performance

Jörg Deigmöller, IRT Munich

Downmixing 5.1 surround sound to 2.0 stereo is a necessity in current challenging production environments. Straightforward downmix coefficients, as simple as they are to execute, result in comb filtering effects dependent on the correlation of the signals that are downmixed. A new algorithm is presented that tackles this issue with optimized decorrelation pre-processing, leading to much improved timbre of the downmixed signal.