1 – “Introduction to sound, propagation, wave characteristics, compressions, rarefactions, wavelength, amplitude, frequency, pitch, tone.”

By: nunomgama

(more…)

“Nara Institute of Science and Technology Body Attachment Type Microphone for Sensing Non-Audible Murmur (NAM)”

“Sound is a pressure wave, which consists of a compression phase and a rarefaction phase. A noise-cancellation speaker emits a sound wave with the same amplitude but with inverted phase (also known as antiphase) to the original sound.”

“The waves combine to form a new wave, in a process called interference , and effectively cancel each other out – an effect which is called phase cancellation .”

“Interesting little clip about how a Neumann U87 microphone is manufactured.”

“The Copperphone, unlike full range high fidelity microphones, operates within a limited bandwidth of frequencies which lends a nostalgic quality to the signal. Some might compare the sound to an AM radio or a telephone.”

Listen:

Male Voice:

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Drums:

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Check it out:

Placid Audio