Title:
CIRCUIT FOR GENERATING ACOUSTIC SIGNALS WITH AMPLITUDE CONTROL
Document Type and Number:
Japanese Patent JPS5810800
Kind Code:
A
Abstract:
For amplitude-controlled generation of an audible signal from stored digital signals, a digital-analog conversion is carried out through changeover of the base current of a bipolar transistor which is controlled with the digital signals, said transistor being connected in series with a loudspeaker. The circuit is also suitable for generating a swell and fade effect and can function with operating voltages of around 1 V due to the current-controlled analog-digital conversion. Particularly advantageous use in integrated systems is therefore possible.
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Inventors:
HANSUUPEETAA HANTSUSHIERU
Application Number:
JP11532982A
Publication Date:
January 21, 1983
Filing Date:
July 02, 1982
Export Citation:
Assignee:
EUROSIL GMBH
International Classes:
G04G13/02; G06J1/00; G10L13/047; G10L13/06; G10L25/00; H04R3/00; (IPC1-7): G10L1/00
Domestic Patent References:
| JPS5648698A | 1981-05-01 |
Attorney, Agent or Firm:
Akimoto Teruo