Matching the Amplifier to the Audio for Highly Efficient Linear Amplifiers

Angus J. Matching the Amplifier to the Audio for Highly Efficient Linear Amplifiers. In: AES Convention 140. Audio Engineering Society; 2016. Paper 9487. Available from: https://aes.org/publications/elibrary-page/?id=18186

@inproceedings{Angus2016_18186,
  author = {Angus, Jamie},
  title = {{Matching the Amplifier to the Audio for Highly Efficient Linear Amplifiers}},
  booktitle = {AES Convention 140},
  note = {Paper 9487},
  year = {2016},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18186}
}

TY  - CPAPER
TI  - Matching the Amplifier to the Audio for Highly Efficient Linear Amplifiers
AU  - Angus, Jamie
T2  - AES Convention 140
M1  - Paper 9487
PY  - 2016
DA  - 2016/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18186
PB  - Audio Engineering Society
LA  - en
AB  - “Class-D” switching amplifiers are considered to be the most efficient amplifiers available on the market. However, designers must deal with supply rail, and radio frequency interference, as well as the need to switch power devices at high frequencies. Because of these, and other problems, not everyone wishes to use switching based technologies for their amplifiers. Unfortunately, linear amplifiers are significantly more inefficient than switching amplifiers, under sine wave testing. However real audio signals spend much more time at low amplitudes than a sine wave. By changing the switch points for “Class-G” or “Class-H” they can have efficiencies that rival “Class-D” amplifiers producing the same output. The paper develops optimum switch points for both single and multiple switching points, with respect to the expected amplitude distribution of the audio.
ER  -