Boots – shoes – and leggings
Patent
1978-04-28
1979-08-07
Malzahn, David H.
Boots, shoes, and leggings
G06F 102
Patent
active
041640209
ABSTRACT:
A programmable sound synthesizer, controlled by a microprocessor, can be fabricated according to the present invention to provide arbitrary programmability with respect to the waveform of an audible tone, frequency, amplitude, envelope shape of the wave train, including attack, sustain and the decay intervals of the envelope, rest or space intervals between notes as well as arbitrary selection of the note within an ordered sequence. A plurality of binary numbers, which in sequence are indicative of the waveform of the tone to be generated, can be read from a memory at a rate which defines the frequency of the waveform. The memory is read by an address generator whose repetition rate is controlled by an integrater. The rate of integration is in turn controlled by a tone number which is programmed into an appropriate register coupled to the integrater. Envelope and amplitude information may also be programmed into corresponding registers. The waveform memory, envelope register and amplitude register are each coupled to the central processor and read synchronously to generate the complex selected tone.
REFERENCES:
patent: 3636333 (1972-01-01), Klund
patent: 3763364 (1973-10-01), Deutsch et al.
patent: 3821714 (1974-06-01), Tomisawa et al.
patent: 3822380 (1974-07-01), Forgione
patent: 4078465 (1978-03-01), Wheelwright
Dynamic Sciences International, Inc.
Malzahn David H.
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