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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 6414613 | Apparatus for noise shaping a pulse width modulation (PWM) signal and method therefor A method for preserving phase information during quantization of pulse width modulation (PWM) signals used in power system applications. In one embodiment, a digital audio amplifier (12) implements a method of noise shaping, where the quantization error i... | 07/02/2002 |
