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Graphic equalizers; Audio noise reducers; Software to control and improve audio equipment sound quality; Audio expanders; Digital sound processors; Sound processors; Noise cancellation software; Noise suppressors [electrical components]; Audio compressors; Voice processing systems; Speech processors; Electronic audio signal processors for compensating sound distortion in speakers; Computer software for recording sound; Computer software for creating and editing music and sounds; Instruments for the reduction of noise in systems for recording audio signals; Signal processors for audio speakers; Electroacoustic emphasisers; Voice recognition software; Software converters of natural language into machine executable commands; Speech recognition software; Audio dynamic characteristic modifiers; Biometric voice recognition systems; Biometric identification systems; Echo cancellers; Digital voice signal processors