Data processing: speech signal processing – linguistics – language – Speech signal processing – Application
Patent
1995-02-08
1998-11-03
Hunter, Daniel S.
Data processing: speech signal processing, linguistics, language
Speech signal processing
Application
381 88, 381 98, 381123, 381103, H03G 500
Patent
active
058324380
ABSTRACT:
A computer for handling audio signals includes, within one box, programmable digital processing circuitry, read/write memory, digital-to-analog circuitry, one or more speakers, and an equalization element for altering the frequency response of signals applied to the speaker. The equalization element can be used to boost low frequency signals sent to the speaker if the speaker has poor low frequency response. Preferably the computer also has headphone and line-out jacks to which it supplies un-equalized audio outputs. The computer's internal speaker can be driven by a bridge mode amplifier, and, to save space, the speaker's electro-magnetic transducer can be placed in the concave recess formed by its speaker cones. The computer can have two speakers to play stereo. Preferably the computer receives analog inputs, such as from a built-in CD-ROM drive, a mike-in jack, and a line-in jack, and uses an analog-to-digital converter to digitizes these signals so they can be digitally manipulated by the computer. The computer preferably has a devices for selectively supplying the analog output from its digital-to-analog circuitry to either its internal speaker, headphone jack, or line-out jack. All of the computer's audio electronics can be placed on its motherboard, or they can be placed on a daughter board which plugs into the motherboard.
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Advertisement for Toshiba T6600C Series Portible computer from p. 3 of the Apr. 1994 New Media magazine, published by HyperMedia Communications Inc. San Mateo, CA.
Statement contained in the Information Disclosure Statement for this application that stand-alone speakers with base boost and notch filters have been made available to the public before the present invention.
Statement contained in the Information Disclosure Statement for this application that the prior art has included computers with speakers inside them.
CDB4231/4248--CS4231/4248 Evaluation Board, Crystal Semiconductor Corporation, DS111DB6 pp. 57-75, Mar. 1994.
Byerly et al., "LM380 Power Audio Amplifier", National Semiconductor, AN69-1-AN69-7, Dec. 1972.
Hunter Daniel S.
Porter Edward W.
Sun Micro Systems, Inc.
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