Electronic musical instrument with automatic chord performance device
First Claim
1. An electronic musical instrument with an automatic chord performance device comprising:
- a pattern generator including a memory for storing a plurality of automatic chord performance tone generating patterns, said plural patterns being read out concurrently as plural chord tone generation timing signals from said memory;
chord tone signal producing means for producing a complete set of chord tone signals having tone pitch relation constituting a chord to be played; and
a plurality of envelope control circuits each separately, concurrently imparting an amplitude envelope to said complete set of chord tone signals in response to a respective one of said plural chord tone generation timing signals, so as to produce duplicates of said complete set of chord tone signals each with a respective different amplitude envelope pattern for the same one rhythm, anda common sound system for reproducing all of said duplicated sets of chord tone signals.
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Abstract
An electronic musical instrument with an automatic chord performance device is of a type in which chord tones of plural series of different tone colors in different rhythm patterns are produced. This instrument employs a memory for storing a plurality of patterns per one rhythm and for plural rhythms in order to simultaneously obtain the chord tones of plural series per one rhythm. The patterns are read from the memory as tone generation timing signals. These tone generation timing signals control the amplitudes of the envelopes of the chord tone signals. The chord tone signals thus controlled in amplitude are generated after being controlled in the tone color in each of the series.
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Citations
16 Claims
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1. An electronic musical instrument with an automatic chord performance device comprising:
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a pattern generator including a memory for storing a plurality of automatic chord performance tone generating patterns, said plural patterns being read out concurrently as plural chord tone generation timing signals from said memory; chord tone signal producing means for producing a complete set of chord tone signals having tone pitch relation constituting a chord to be played; and a plurality of envelope control circuits each separately, concurrently imparting an amplitude envelope to said complete set of chord tone signals in response to a respective one of said plural chord tone generation timing signals, so as to produce duplicates of said complete set of chord tone signals each with a respective different amplitude envelope pattern for the same one rhythm, and a common sound system for reproducing all of said duplicated sets of chord tone signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electronic musical instrument with an automatic chord performance device comprising:
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a pattern generator including a memory for storing plural sets of automatic chord performance tone generating patterns for plural selectable rhythms, each set being for each respective rhythm, at least one set including a plurality of different automatic chord performance tone generating patterns, said at least one set of said different patterns being read out from said memory as chord tone generation timing signals for one selected rhythm, chord tone signal producing means for producing chord tone signals of a tone pitch relation constituting a chord to be played, and an envelope control circuit for controlling the amplitude envelope of said chord tone signals in said different patterns concurrently in response to the respective ones of said read out set of chord tone generation timing signals. - View Dependent Claims (9)
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10. In an electronic musical instrument having an automatic chord performance capability, the improvement comprising:
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a rhythmic pattern generator producing, for each of certain selectable rhythms, plural concurrent tone generation timing signals, tone generator means for producing musical tone waveform signals corresponding to the tones of a selected chord, a common sound system having plural inputs, a first waveshape imparting means, connected between said tone generator means and one of said sound system inputs, for imparting to all of the tone waveform signals for said chord a first envelope waveshape having characteristics controlled by one of said plural timing signals, additional waveshape imparting means, each connected between said tone generator means and a respective other one of said plural sound system inputs, each for respectively imparting to all of the tone waveform signals for said chord respective envelope waveshapes each having characteristics respectively controlled by other ones of said plural timing signals, whereby said common sound system reproduces concurrently duplicated chords each having a respective imparted envelope waveshape of different characteristics and each with timings respectively established by said plural concurrent tone generating timing signals. - View Dependent Claims (11, 12, 13)
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14. In an electronic musical instrument with an automatic chord performance device, the improvement comprising:
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tone generator means for generating a set of musical tone waveform signals constituting a chord, plural envelope control means each for imparting a common envelope shape to a set of musical tone waveform signals, said chord constituting a set of musical tone waveform signals from said tone generator means being supplied in parallel to each of said plural envelope control means for separate envelope shaping thereby, and pattern generator means for concurrently supplying plural different tone generation timing signals associated with a single, selectable rhythm, each of said plural timing signals being separately supplied to a respective one of said envelope control means to control the envelope shape imparted thereby, whereby there are produced plural sets of said chord constituting musical tone waveform signals each set having a separately imparted envelope shape associated with a respective one of said tone generation timing signals. - View Dependent Claims (15, 16)
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Specification