Digital tone generator for tone sequences

Details Digital tone generator for tone sequences Digital tone generator for tone sequences

1981-10-21

1985-05-07

Swann, III, Glen R.

Communications: electrical

Audible indication

Ultrasonic pest control

H03K 5156, G08B 300

Patent

active

045161135

ABSTRACT:
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.

REFERENCES:
patent: 4073133 (1978-02-01), Earls et al.
patent: 4396909 (1983-08-01), Suzuki
Publication "Funkschau" (1980), No. 20, pp. 87-90.

Affiliated with

Also associated with

Rating

Digital tone generator for tone sequences does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital tone generator for tone sequences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital tone generator for tone sequences will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1802800