Tremolo effect producing system

An improved tremolo effect producing system capable of being positioned within the cabinet of an organ comprising:

• means for generating a plurality of tone signals,
• means for gating selected tone signals,
• tone coloring means for converting said gated tone signals to instrumental tones having intricate selective frequency characteristics,
• means for coupling at least a portion of said instrumental tones to a power amplifier,
• means for coupling at least a portion of said instrumental tone signals to an electroacoustical transducer, said electroacoustical transducer being positioned within a small enclosure,
• a low-power acousto-electrical transducer positioned in said small enclosure opposite said electroacoustic transducer for converting the sound waves generated by said electroacoustic transducer to an electrical signal,
• a plurality of relatively small rotational sound shielding members each disposed between said acoustoelectrical transducer and said electroacoustic transducer, each of said rotational sound shielding members periodically interrupting through rotation thereof the sound path from said electroacoustic transducer to said acousto-electrical transducer, said sound waves passing in series from said electroacoustic transducer through said sound shielding members to said acoustoelectrical transducer,
• means for rotating said sound shielding members,
• means for coupling said electrical signal to said power amplifier,
• means for summing said electrical signal with said at least a portion of said instrumental tone signal, and
• means for converting said summed signals to high power sound waves.

An improved tremolo effect producing system capable of being positioned within the cabinet of an organ comprising:

• means for generating a plurality of tone signals,
• means for gating selected tone signals,
• tone coloring means for converting said gated tone signals to instrumental tones having intricate selective frequency characteristics,
• means for coupling at least a portion of said instrumental tones to a power amplifier,
• means for coupling at least a portion of said instrumental tone signals to a plurality of electroacoustical transducers, said electroacoustical transducers being positioned within a small enclosure,
• a low-power acousto-electrical transducer disposed in said small enclosure opposite said electroacoustic transducers for converting the sound waves generated by said electroacoustic transducers to electrical signals,
• a plurality of rotational sound shielding members each disposed between said acousto-electrical transducer and said electroacoustic transducers with said acousto-electrical transducer being positioned between said rotational sound shielding members, each of said rotational sound shielding members periodically interrupting through rotation thereof the sound path from said at least one electroacoustic transducers to said acousto-electrical transducer,
• means for rotating said sound shielding members,
• means for coupling said electrical signal to said power amplifier,
• means for summing said electrical signal with said at least a portion of said instrumental tone signal, and
• means for converting said summed signals to high power sound waves.

An improved tremolo effect producing device capable of being positioned within the cabinet of an organ comprising:

• means for coupling an electrical signal to an electroacoustical transducer, said electroacoustical transducer being positioned within a small enclosure,
• a plurality of low-power acousto-electrical transducers disposed in different positions in said small enclosure opposite said electroacoustic transducer for converting the sound waves generated by said electroacoustic transducer to a set of electrical signals,
• at least one relatively small rotational sound shielding member positioned in said enclosure, said member being rotated to periodically vary the sound waves transmitted in said small enclosure, and
• means for rotating said sound shielding member.