Claims
- 1. In a musical instrument having a keyboard and bellows for causing pressure differentials during contraction and expansion and reeds responsive to said pressure differentials to produce a musical output, a control for varying the volume of said musical output, special effects means for providing alteration outputs to alter said musical output and thus provide effects such as brilliancy, fluttering and the like, and preset switch means for presetting the special effects means to be used to alter said musical output, the improvement comprising:
- a flexible membrane in communication with the interior of said bellows and responsive to said pressure differentials;
- an electronic circuit comprising gate means for gating said alteration outputs to said musical output in accordance with a control voltage supplied through said preset switch means when said preset switch means is closed;
- variable switch means connected to said flexible membrane and adapted to provide said control voltage through said preset switch means to enable and disable said gate means in accordance with the movement of said flexible membrane; and
- said variable switch means, present switch means, gate means, and special effect means integrated such that the special effects may be changed during playing of the instrument without the need for removal of the musician's hands from the keyboard.
- 2. An apparatus as in claim 1, wherein said electronic circuit further comprises:
- register means for storage and supply of said alteration outputs to said gate means.
- 3. An apparatus as in claim 2, wherein said control voltage comprises a high signal level and a low signal level.
- 4. An apparatus as in claim 3, wherein
- said gate means comprises plural gates having their outputs connected in parallel and each gate having an enable input and an alteration input;
- said register means comprising plural registers, each of said registers connected to a respective gate alteration input; and
- said preset switch means comprising plural switches, the output of each switch connected to a respective gate enable input and the inputs of said plural switches parallel connected to said variable switch means at a connection point,
- whereby respective alteration outputs are gated to said musical output in accordance with movement of said flexible membrane when a respective preset switch is closed.
- 5. An apparatus as in claim 4, and further comprising:
- an inverter means located between the input of at least one of said plural switches and the input of at least one other of said plural switches to invert said control voltage supplied to said other switch,
- whereby at least one of said gates may be enabled by said low signal level and at least one other of said gates may be enabled by said high signal level.
- 6. An apparatus as in claim 4, and further comprising an amplifier means connected to an alteration input of one of said gates for supplying an altered volume output to said musical output.
Priority Claims (1)
Number |
Date |
Country |
Kind |
19028 A/78 |
Jan 1978 |
ITX |
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Parent Case Info
This is a continuation, of application Ser. No. 928,393, filed July 27, 1978, now abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
394837 |
Nov 1973 |
SUX |
Continuations (1)
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Number |
Date |
Country |
Parent |
928393 |
Jul 1978 |
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