Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Anthony J. Magrath0
Date of Patent
December 16, 2008
0Patent Application Number
110022070
Date Filed
December 3, 2004
0Patent Primary Examiner
Patent abstract
The present invention relates to audio signal processing such as equalisation and spatial enhancement functions. The present invention provides an audio signal processing circuit arrangement for two audio channels, and which combines spatial enhancement or acoustic mixing (crosstalk) cancelling with graphic equalisation functions. This is achieved with a circuit structure having a reduced filter count compared with known cascaded circuits dedicated to each function. The circuit structure processes the sum and difference signals through separate filters and then recombines them to recover the separate channels (adding and subtracting respectively).
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