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Digigram Researcher to Discuss New Automatic Gain Control Methodology at AES

October 17 2013, 13:01

AES135DigigramSturmelWebFrench company Digigram announced that its research project manager, Dr. Nicolas Sturmel, will present a paper and poster at the 135th AES Convention in New York City on Saturday, October 19, from 5:00 to 6:30 PM. The paper, “Automatic Analog Preamp Gain Control Using Digital Command,” addresses the problem of designing an automatic gain control (AGC) in the absence of dedicated hardware (e.g., voltage-controlled amplifiers).

Dr. Sturmel will discuss how Digigram overcame the challenges of fixed-gain steps and variable delay of the gain command to arrive at a proposed solution: a simple yet high-quality, digitally controlled automatic gain using only 10 MIPS of processing power from Digigram’s CANCUN high-end USB sound card, plus the built-in, high-end, digitally controlled mic preamplifier.

Dr. Sturmel is in charge of advanced research at Digigram. He holds a PhD in signal processing and was a postdoctoral fellow at Institut Langevin ESPCI in Paris and GIPSA-lab Grenoble. To learn more, visit

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