Abstract: A multi-path power amplifier that includes two or more amplifier paths where the amplifier path having the most favorable dynamic resolution of the momentary signal is utilized. The amplifier paths are adaptively controlled by a processor, DSP, or other suitable digital processing. This results in significantly improved power amplifier dynamic range and broadband noise-floor performance, for example, as compared with traditional audio-frequency power amplifiers.

Abstract: A multi-path power amplifier that includes two or more amplifier paths where the amplifier path having the most favorable dynamic resolution of the momentary signal is utilized. The amplifier paths are adaptively controlled by a processor, DSP, or other suitable digital processing. This results in significantly improved power amplifier dynamic range and broadband noise-floor performance, for example, as compared with traditional audio-frequency power amplifiers.

Abstract: An analog-to-digital and digital-to-analog conversion system using pulse-density-modulation (PDM) digital signals which minimize noise and optimize dynamic range by dividing a signal into multiple parallel pathways by apportioning a least significant range portion of an incoming signal to a low-path circuit and a most-significant portion of the incoming signal to a high-path circuit. The high-path circuit and low-path circuit can be separately level-modified to optimize dynamic range. Embodiments of the system can include an analog-to-digital conversion, a digital-to-analog conversion, or a complete analog-to-digital and digital-to-analog conversion system.

Abstract: A digital-to-analog converter which improves dynamic range by apportioning a least significant bits portion of an incoming digital signal to a low-path circuit and a most significant bits portion of the incoming digital signal to a high-path circuit. The low-path circuit has a low-path digital-to-analog converter, which feeds a low-path resistive element, which feeds an output node. The high-path circuit has a high-path digital-to-analog converter, which feeds a high-path resistive element, which feeds an output node. The output node is a simple electrical connection of the outputs of the low-path and high-path resistive elements. The system can further improve dynamic range by providing a high-path amplifier with control element(s) which reduce or eliminate high-path noise from the output node. Further dynamic range improvement is realized when the high-path control system takes advantage of the effects of psychoacoustic masking.

Abstract: A digital-to-analog converter which improves dynamic range by apportioning a least significant bits portion of an incoming digital signal to a low-path circuit and a most significant bits portion of the incoming digital signal to a high-path circuit. The low-path circuit has a low-path digital-to-analog converter, which feeds a low-path resistive element, which feeds an output node. The high-path circuit has a high-path digital-to-analog converter, which feeds a high-path resistive element, which feeds an output node. The output node is a simple electrical connection of the outputs of the low-path and high-path resistive elements. The system can further improve dynamic range by providing a high-path amplifier with control element(s) which reduce or eliminate high-path noise from the output node. Further dynamic range improvement is realized when the high-path control system takes advantage of the effects of psychoacoustic masking.

Abstract: A digital-to-analog converter which minimizes noise and optimizes dynamic range by apportioning a least significant bits portion of an incoming digital signal to a low-path circuit and a most significant bits portion of the incoming digital signal to a high-path circuit. The low-path circuit has a low-path digital-to-analog converter, which feeds a low-path amplifier, which feeds a low-path resistive element, which feeds an output node. The high-path circuit has a high-path digital-to-analog converter, which feeds a high-path amplifier, which feeds a high-path resistive element when a high-path switching element is closed, which feeds an output node. The output node is a simple electrical connection of the outputs of the low-path and high-path resistive elements. The high-path switching element is closed when the incoming digital signal has an amplitude above a switching threshold level.