An electronic device (110) provides equalization and/or compensation for a coupled audio accessory device (120). The audio accessory device (120) has a memory (220) that contains equalizer parameters (304, 308, 310, 314) which helps in characterizing its audio response or impact on audio signals within...http://www.google.co.uk/patents/US5881103?utm_source=gb-gplus-sharePatent US5881103 - Electronic device with equalized audio accessory and method for same
