4,584,700

43.88.Lc ELECTRONIC AUDIO SIGNAL PROCESSOR

Donald T. Sc•olz, Wayland, MA 22 April 1986 (Class 381/61); filed 20 September 1982

This patent combines a number of signal processing circuits (filters, compressor, reverb, distortion generator) into a single package intended for use as a musical instrument amplifier.•GLA

4,548,511

43.88.Md ELECTRONIC TIMEPIECE WITH VOICE

MEMORY

Hiroshi Yabe, assignor to Kabushiki Kaisha Seikosha 22 October 1985 {Class 368/10); filed in Japan 8 October 1981

Instead of arbitrary coded signals or synthesized speech announce- ments, this talking wristwatch allows its owner to digitally record his own voice or any other suitable sound.--GLA

4,501,014

43.88.Md METHOD FOR ELIMINATING UNWANTED

ACOUSTIC SIGNALS IN AUDIO PROGRAMS TO BE

EDITED FOR REPRODUCTION

Bjorn Bluthgen, assignor to Polygram GmbH 19 February 1985 (Class 381/94); filed in the Federal Republic of

Germany 25 July 1980

Even though the original application dates back more than seven years, this patent will interest those involved with digital signal processing. An abrupt discontinuity in a recorded audio signal, perhaps the result of editing

or tape dropout, is seamlessly filled in automatically. The system makes use of a suitable transfer function stored in ROM, preferably in the shape of a semi-sine.--GLA

4,625,328

43.88.Tj INTEGRATED AMPLIFIER AND SPEAKER SYSTEM WITH IMPROVED COOLING EFFICIENCY

Tommyca Freadman, assignor to Konutra Industries, Ltd. 25 November 1986 (Class 381/111); filed 9 April 1984

The power amplifier of an integrated amplifier-loudspeaker can make use of the loudspeaker's magnetic assembly and frame as a heat sink. This patent carries the idea one step farther: The motion of the loudspeaker cone

provides forced air cooling for a tinned heat sink mounted in close proxim- ity to its rear side.--GLA

410 J. Acoust. Soc. Am. 83(1), Jan. 1988; 0001-4966/88/01410-01500.80; © 1988 Acoust. Soc. Am.; Patent Reviews 410

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