[digital_amp] project |
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Papers of InterestThanx to Doug Stabler |
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| Towards a Digital Power Amplifier by Mark Sandler |
This paper describes a method for direct conversion of digitally encoded audio signals
into analog power to drive a loudspeaker without any intermediate conversion to an
analog voltage representation - this is digital pulse width modulation.
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| Progress Towards a Digital Power Amplifier by Mark Sandler |
This paper reports advances made in the development of an all digital audio power
amplifier or power digital-to-analogue converter. A previous paper (1) reported simulation
and theoretical results and demonstrated that they were in agreement. Preprint Number: 2361 / Convention: 80 1986-03 |
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| Developments in Realizing an All-Digital Power Amplifier by R.E. Hiorns, R.G. Bowman, J.M. Goldberg, M. B. Sandler |
Hardware and software noise shapers are each used in conjunction with a hardware
pulse width modulator to demonstrate the conversion of digital audio data directly
to an analogue signal. Preprint Number: 3034 Convention: 90 1991-02 |
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| Spectral Representation of a PCM-PWM Digital Power Amplifier by Pavel Pribyl |
The main purpose of this paper is to offer a powerful method of the uniform pulse
width modulation (PWM) analysis. Complex analytic expressions for spectra sets are
not calculated. They can beobtained from the graphic representations. Preprint Number: 2920 Convention: 88 1990-03 |
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| Realizing an All-Digital Power Amplifier by R.E. Hiorns, J.M. Goldberg, M.B. Sandler |
A hardware design of a pulse width modulator and noise shaper suitable for converting
digital audio data directly to an analogue signal is presented. Spectral analysis
is used to compare with simulation results and theoretical performance. Preprint Number: 2960 Convention: 89 1990-09 |
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| All-Digital Power Amplifier Based on Pulse-Width Modulation by M.S. Pedersen, M. Shajaan |
An all-digital power amplifier capable of driving a loudspeaker at high-power levels is analyzed and implemented. The amplifier is based on linearized pulse-width modulation (LPWM). The LPWM amplifier has an efficiency of >90% at eight-times oversampling Preprint Number: 3809 Convention: 96 1994-03 |
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| Dynamic Model-Based Linearization of Quantized Pulse-Width Modulation
for Applications in Digital-to-Analog Conversion
and Digital Power Amplifier Systems by M.O.J. Hawksford |
Abstract: Quantized pulse-width modulation (PWM) offers an efficient means of converting
digital date to analog either at low signal levels for DAC systems or at higher levels in power amplification. AES? -- Vol. 40, Number 4 pp. 235 (1992) |
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| More on "Dynamic Model-Based Linearization of Quantized Pulse-Width
Modulation for Applications in Digital-to-Analog Conversion and Digital
Power Amplifier Systems by M.O.J. Hawksford |
AES? -- Vol. 42, Number 3 pp. 151 (1994) |
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| Digital Power Amplification Using Sigma-Delta Modulation and Bit Flipping (ER) by Anthony J. Macgrath, Mark B. Sandler |
A data conversion technique suitable for digital power amplifiers (DPAs) is described, based on a modified sigma-delta modulator. AES -- Vol. 45, Number 6 pp. 476 (1997) |
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