EP 0052236 B1 19850502 - TONE GENERATOR
Title (en)
TONE GENERATOR
Publication
Application
Priority
- DE 3043505 A 19801118
- DE 3050148 A 19801118
Abstract (en)
[origin: US4516113A] Semiconductor circuits for the automatic generation of tone sequences of different tones. A bistable switch having a control input activated by start signal controls a voltage stabilizing circuit which in turn controls an RC-oscillator. Several frequency dividers are driven by the oscillator for producing divider outputs as tone signal outputs furnishing individual tone frequencies corresponding to the tone sequences to be produced. A general cycle control has inputs controlled by the first divider output. Modulator modules driven by the cycle control and by the tone signal outputs, are connected to the digital-to-analog converters which produce tone signal outputs that correspond to the individual tone frequencies. The digital-to-analog converters have outputs that are jointly connected to an electro-acoustic transducer, such as a loudspeaker.
IPC 1-7
IPC 8 full level
G10H 5/00 (2006.01); B06B 1/02 (2006.01); G08B 3/10 (2006.01); G10H 1/26 (2006.01); G10K 9/13 (2006.01); G10K 15/04 (2006.01)
CPC (source: EP US)
B06B 1/0276 (2013.01 - EP US); G10H 1/26 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0052236 A1 19820526; EP 0052236 B1 19850502; DE 3170322 D1 19850605; JP S57114196 A 19820715; US 4516113 A 19850507
DOCDB simple family (application)
EP 81108368 A 19811015; DE 3170322 T 19811015; JP 18514481 A 19811118; US 31325381 A 19811021