Electronic circuit with reverberation effect and improved output controllability

Abstract

An electronic circuit for adding the effects of reverberation to a high impedance signal produced from an external audio source such as a guitar pickup or a high impedance microphone. The electronic circuit comprises a reverberation effects circuit having pre-amplifier / driver and recovery amplifier sections and a spring reverberation device coupled thereinbetween and a reverberation effects bypass at the circuit's input, prior to switchably passing the audio signal into an input of the pre-amplifier / driver section which comprises a low impedance, high current output for input into the spring reverberation device having an output for passing a low impedance signal to the recovery amplifier section, which suitably serves in increasing the impedance of the signal to a predetermined level acceptable for input into an external sound device such as an amplifier having channel inputs and audio control capabilities, and a power supply circuit having means for switching between a dc voltage source and an ac voltage source and supplying ±9 volts to integrated circuits (ICs) included in the pre-amplifier / driver and recovery amplifier sections of the reverberation effects circuit.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation-in-part application of my prior application U.S. Ser. No. 10 / 757,833, filed Jan. 14, 2004, entitled “Electronic Circuit with Reverberation Effect and Improved Output Controllability, the disclosures of which, including all attached documents, are incorporated herein by reference in their entirety for all purposes.FIELD OF THE INVENTION [0002] The present invention relates in general to an electronic circuit for accepting a high impedance audio signal and adding spring reverberation effect thereto while maintaining an acceptable impedance range for input into an external sound device such as a guitar amplifier, pedal effects device or any other instrument level device. BACKGROUND OF THE INVENTION [0003] Reverberation is the collection of reflected, discrete sounds or echoes generated from surfaces in an enclosure like an auditorium. Musicians, audiophiles and the like strive to add reverberating effects...

AI Technical Summary

Benefits of technology

"The present invention is a low-cost, portable electronic circuit that can be used with external sound devices such as amplifiers or effects pedals to enhance the reverberation effect. It provides versatility to musicians by allowing them to produce sounds that are not necessarily associated with a known acoustical space. The circuit has impedance levels that are equivalent to the output of a musical source and is portable and compatible with most vintage amplifiers. It also includes an audio signal bypass for input into a two-channel amplifier and can increase the effectiveness of the reverberation effect or create new sounds. The circuit is economical, durable, and effective without requiring significant retrofitting of existing sound equipment."

Problems solved by technology

Inherent in these devices is the lack of varied means for controlling or manipulating the reverberation effect besides that of the reverberation device such as through the use of an external amplifier or an effects pedal device for improved replication of an acoustical space or increased production of a new sound effect.

Consequently, limitations are immediately placed upon the musician in attempting to simulate a particular acoustical space, create entirely new sound effects, or replicate sounds of the past, specifically the warm “vintage sound” so often associated with the preferred tube driven spring reverberation devices of the 50's and 60's.

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