Fully parametric equalizer
First Claim
1. Parametric equalizer comprising filtering means (FM), user interface means (UIM), audio signal input means and audio signal output means, said filtering means comprising at least one filter block (FIB) said user interface means (UIM) comprising means for adjustment of parameters:
- corner frequency (fc), shape (Q) and gain (G), said parametric equalizer comprising further means for adjusting a symmetry parameter independent to the other user parameters, which may be continuously varied in order to provide a smooth transition between low-shelf, bell-shaped and high-shelf filter characteristic of said at least one filter block (FIB).
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Accused Products
Abstract
The invention relates to a parametric equalizer comprising filtering means (FM), user interface means (UIM), audio signal input means and audio signal output means, said filtering means comprising at least one filter block (FIB) said user interface means (UIM) facilitating adjustment of corner frequency (fc), Shape (Q) and gain (G), said user interface means (UIM) comprising a further adjustment parameter (SYM), said user interface means being mapped by means of coefficient adjustment algorithms (CAD) into filter coefficient settings (FCP) of the at least one filter block (FIB), which when established reflects the adjustment of the user interface means (UIM) said further adjustment parameter (SYM) providing a filter coefficient setting (FCS) comprising a combined adjustment of at least one zero frequency, pole frequency, zero Q and pole Q of at least one filter block.
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Citations
24 Claims
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1. Parametric equalizer comprising
filtering means (FM), user interface means (UIM), audio signal input means and audio signal output means, said filtering means comprising at least one filter block (FIB) said user interface means (UIM) comprising means for adjustment of parameters: - corner frequency (fc), shape (Q) and gain (G),
said parametric equalizer comprising further means for adjusting a symmetry parameter independent to the other user parameters, which may be continuously varied in order to provide a smooth transition between low-shelf, bell-shaped and high-shelf filter characteristic of said at least one filter block (FIB). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- corner frequency (fc), shape (Q) and gain (G),
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24-26. -26. (canceled)
Specification