Electronic apparatus for manipulation of the frequency, time, dynamic range, distortion, noise and amplitude characteristics of audio signals, namely, audio mixing consoles, sound mixing consoles, audio amplifiers and processors; apparatus and equipment for recording, storing, processing, filtering, manipulating, editing, synthesizing, mixing, reproducing and transmission of sound and audio signals, namely, audio recorders, audio mixers and audio processors; acoustic transducers for producing sound from electrical signals, namely, loudspeakers and headphones; apparatus, instruments and equipment for processing audio input signals to produce audio output signals correcting for sound distortion originating from loudspeakers, namely, digital signal processors, limiters and compressors; home audiovisual apparatus and equipment, namely, televisions, stereo systems, audio speaker bars, digital media electronic docking stations, television decoders, signal processors and amplifiers; digital and analogue satellite, audiovisual and television receivers of distributed audio and audiovisual signals; apparatus, equipment and instruments, namely, audio amplifiers, electronic scalers for audio and visual signals, audio frequency transformers and audio mixers, all for enhancement of audio quality for use with high fidelity stereo systems, televisions, car stereo systems, mobile telephones and portable media players, and software for enhancement of audio quality for use with high fidelity stereo systems, televisions, car stereo systems, mobile telephones and portable media players; software for processing digital representations of audio signals; computer programs for recording, receiving, storing, processing, filtering, manipulating, enhancing, reproducing, and transmission of audio signals; magnetic data media, namely, blank CD-ROMS and magnetic discs, and optical data media in the nature of blank optical discs, all for recording of audio signals; magnetic data media, namely, blank CD-ROMS and magnetic discs, and optical data media in the nature of blank optical discs, all for recording the aforesaid software and computer programs; magnetic data media, namely, pre-recorded CD-ROMS and magnetic discs, and optical data media in the nature of pre-recorded optical discs, all containing audio signals; magnetic data media, namely, pre-recorded CD-ROMS and magnetic discs, and optical data media in the nature of pre-recorded optical discs, all containing the aforesaid software and computer programs