The indefatigable Preston Nichols explains what not long ago was “the next step in digital sound” on this planet “It’s true, [vacuum tubes sound better than transistors] because the vacuum tube produces…life energies.” — 37:45 in   From the comments — “…I saw tapes of Preston at a Tesla society  conference. With scientists in the audience he was able to break down quantum psychics formulas on a black board from memory. Some of … Read more

Understanding the Different Types of Acoustical Treatments – Absorption

In this livestream, we go over the various types of acoustical room treatments with resident expert Anthony Grimani. We discuss how to acoustically treat a room and where to locate treatments along with things you should NOT do. Various acoustical treatment types are discussed with this episode focusing on absorption. Diffusion, reflectors, and bass traps … Read more

Human Acoustics and the Telephone Network

Abstract   By classifying according to their mode of excitation, speechsounds can be broken into three distinct classes of phonemes, where a phoneme is defined as the smallest unit of speech that distinguishes one utterance from another. The three classes of phonemes are voiced, unvoiced, and plosives. Voiced phonemes are considered deterministic in nature. They … Read more