Abstract: A digital signal extraction device that includes an input configured to receive a digital audio input signal from an audio media player, an output configured to provide high-resolution digital audio output to an external digital-to-analog converter (DAC), and a microprocessor coupled between the input and output. The microprocessor is configured to extract the high-resolution digital audio output from the digital audio input signal received at the input, while keeping intact any copy protection for the digital audio input signal.

Abstract: An acoustic panel is provided. The acoustic panel may include a hidden mounting structure formed on the rear surface of the acoustic panel. The hidden mounting structure allows the acoustic panel to be used with substrates of any density, including substrates with a medium density of greater than 2 lbs. per cubic foot (pcf) and less than 6 lbs. pcf. In one particular embodiment, the acoustic panel may be used with substrates having a density of approximately 3 lbs. pcf. The acoustic panel may also include a cover formed from two or more materials having different acoustical and/or physical properties.

Abstract: A digital signal extraction device that includes an input configured to receive a digital audio input signal from an audio media player, an output configured to provide high-resolution digital audio output to an external digital-to-analog converter (DAC), and a microprocessor coupled between the input and output. The microprocessor is configured to extract the high-resolution digital audio output from the digital audio input signal received at the input, while keeping intact any copy protection for the digital audio input signal.