Reverberators for use in wide band assisted reverberation systems
USRE39189E1 · kind E1 · reissue
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC —)General
Abstract
A multi-channel reverberation system has a substantially constant multi-channel power gain at audio frequencies and comprises multiple signal inputs, one for each input channel, a number of comb filter networks connected to each signal input, each comb filter network including a feed forward stage, a cross-coupling network cross-coupling the comb filters to increase the reverberation echo density, and multiple signal outputs, one for each output channel. Preferably the feed forward stage of each comb filter provides a substantially constant multi-channel power gain at audio frequencies and the cross-coupling matrix is an orthogonal cross-coupling matrix cross-coupling a number of single channel allpass comb filters, positioned immediately before or after the delay lines, to create a multi-channel allpass comb filter with a unitary transfer function matrix at all frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.