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Lakes Convolution Enhances Allen Organ Sound

Licenses patented low-latency convolution technique. (June 04, 2004)

Lake Technology Ltd. has exclusively licensed its patented low-latency convolution technique to the Allen Organ Company, the largest producer of church and theater organs in the world and the co-developer of the digital organ. The manufacturer, based in Macungie, Pennsylvania, has just introduced Quantum technology, incorporating the Lake Convolution technique, for its Renaissance Organs.

There are two basic methods for producing reverberation utilizing DSP. The traditional method relies on DSP structures of delays, feedback paths, and gain blocks to attempt to recreate the impulse response of a sound source in a virtual space. But the way that the building blocks are arranged and the DSP code used lend each reverberation device a characteristic that is not necessarily desired.

A more accurate and euphonious approach is convolution reverberation, which analyses the impulse response of a sound source in a space down to sample level and applies the result to any input source, sample by sample. This approach allows the simulation of the exact characteristics of that specific space. Although convolution is a memory- and processor-intensive technique that typically required a lengthy computation before the result could be heard, the proprietary convolution algorithm developed by Lake is capable of creating the most realistic acoustical simulations ever developed in real time and with very low latency.

Lake Technology's Convolution algorithm is the core technology in numerous products in the company's intellectual property license portfolio. Those licensed convolution-based products include the Lake-developed Dolby Headphone and Dolby Virtual Speaker processes, which are also available in Lake's VZ chip design for consumer product applications, as well as Lake's own Huron Acoustic Research Workstation and other, third party convolution reverberation products. Dolby Headphone and Dolby Virtual Speaker are DSP solutions that allow listeners to experience cinema-quality surround sound through any pair of stereo headphones or loudspeakers.

"We are very excited to see that a leading company like Allen Organ understands the leap forward in quality and audio impact the use of Lake Convolution will provide to their customers," said Patrick Flanagan, Director of Operations - Licensing , Lake Technology. "The Allen Organ license and product rollout, demonstrates that Lake continues to provide leading and innovative audio technologies to its global brand customers enhancing their product offerings."

Allen Organ Company has been committed to advancing the art of organ building through advanced technology for over 60 years. Allen was granted the pioneering electronic organ patent for the stable audio oscillator in 1938. In 1971, Allen introduced the first musical instrument to use digital sampling.

"We see the implementation of real-time convolution as a milestone in digital organ development," said Dwight Beacham, Vice President of R & D, Allen Organ Company. "This technology not only improves the organ's sound, but, just as importantly, how the instrument reacts to the musician, greatly increasing artistic results."

About Lake Technology Limited:
Lake Technology Limited (ASX:LAK), an innovator in audio digital signal processing, is the creator of the technology behind "Dolby Headphone." Lake has strategic relationships with Dolby Laboratories and Clair Bros. Lake customers include major computer OEMs, commercial electronics OEMs, telecommunications companies, airlines, and research institutions. The company has offices in Sydney, Australia and San Francisco, CA.

For more information about Lake Technology and its patented digital audio technologies, please visit the Lake web site at and email us at [email protected].


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Related Keywords:Lake Technology, Allen Organ Company, Renaissance Organs, reverberation, Convolution, Patrick Flanagan, Dwight Beacham,


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