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 Title: |
US4282787:
Electronic musical instrument simultaneously operable in monophonic and polyphonic modes
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Walborn, Richard M.; Tonawanda, NY
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| Assignee: |
Norlin Industries, Inc., Deerfield, IL
other patents from NORLIN INDUSTRIES, INC. (407095) (approx. 67)
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| Published / Filed: |
1981-08-11
/ 1980-02-19
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| Application Number: |
US1980000122340
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| IPC Code: |
Advanced:
G10H 5/00;
Core:
more...
IPC-7:
G10H 1/00;
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| ECLA Code: |
G10H5/00B;
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| U.S. Class: |
Current:
084/673;
084/684;
084/700;
084/DIG.020;
984/377;
Original:
084/001.01;
084/001.17;
084/DIG.20;
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| Field of Search: |
084/1.01,1.17,DIG. 20,DIG. 22
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| Priority Number: |
| 1980-02-19 |
US1980000122340 |
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| Abstract: |
An electronic musical instrument having combined monophonic and polyphonic sound producing capabilities includes a keyboard simultaneously operating a monophonic tone signal generating circuit and a polyphonic tone signal generating circuit. The tone signals produced by the tone generating circuits are combined and coupled through a single signal processing stage and therefrom to an output speaker. A gate signal for enabling the monophonic tone signal generating circuit and for operating the signal processing stage is derived at the output of a detector circuit which is responsive to the presence of an audio output from the polyphonic tone signal generating circuit.
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| Attorney, Agent or Firm: |
Kail, Jack ;
Kransdorf, Ronald J. ;
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| Primary / Asst. Examiners: |
Dobeck, B.; Isen, Forester W.
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| Family: |
None
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First Claim:
Show all 11 claims |
What is claimed is:
1. An electronic musical instrument having combined monophonic and polyphonic sound producing capabilities comprising:
- a plurality of player operable keys each representing a different pitch of a musical scale;
- polyphonic means for producing a first audio signal having frequency components representing the pitches of all of said keys which are depressed;
- means for producing a gate signal in response to the detection of the presence of said first audio signal;
- monophonic means enabled in response to said gate signal for producing a second audio signal having a frequency representing the pitch of only one of said keys which are depressed;
- means for producing a third audio signal representing the sum of said first and second audio signals; and
- output means responsive to said gate signal for controllably processing said third audio signal.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 1 U.S. patent(s) that reference this one
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