Grandma Moon Speaks: Harmonics

Topics Covered: Harmonic Fundamental Frequency Harmony I don’t know anything about music. In my line you don’t have to – Elvis Presley You might be thinking: So far every property we’ve seen about sound is subjective. How do people get a handle on it, then? Especially a mathematical handle. We get our ‘math fix’ with […]

Grandma Moon Speaks: Timbre and Duration

Topics Covered: Timbre Duration Spectrum and Envelope Rhythm After silence, that which comes nearest to expressing the inexpressible is music – Aldous Huxley Sounds are complex waves: It is this complexity that gives us so much variety. Otherwise everything would sound like the ring tones from the first mobile phones! Question to ask yourself: If […]

Grandma Moon Speaks: Pitch and Tone

Topics Covered: Pitch Tone You can actually have a pitch button, you know, to get people on pitch – Helena Bonham Carter   Are some frequencies more important than others? That’s the question one needs to ask if one wants to understand Pitch. Pitch is a sensation. Different frequencies affect us differently, and we assign […]

Grandma Moon Speaks: Frequency Range of the Human Ear

Topics Covered: Audible Range of the Human Ear Audio or Sonic Range Ultrasonic and Infrasonic Frequencies I remember attaching a wire clothing hanger to the antenna of my radio in my bedroom, so I could get the frequency and get that station and listen to the top 10 every night – Nelly Furtado The average […]

Grandma Moon Speaks: The Human Ear Part 2

Topics Covered: The Cochlea Semi-circular Canals Music doesn’t lie. If there is something to be changed in this world, then it can only happen through music – Jimi Hendrix Now you can take a look at how the ear is designed without getting dizzy: The inner ear has two portions – the Semi-circular Canals and […]

Grandma Moon Speaks: The Human Ear Part 1

Topics Covered: The 3 Regions of the Human Ear The Pinna and the Auditory Canal The Ear Drum One good thing about music, when it hits you, you feel no pain – Bob Marley If the eye is designed for just one thing – sight, then the ear is designed for three – hearing, balance […]

Grandma Moon Speaks: RMS and the Decibel

Topics Covered: Root Mean Square The Decibel Common dB Values Day has its eyes; night has its ears – Japanese Proverb In the above drawing, the numbers represent: 1. Silence 2. Audible sound 3. Atmospheric pressure 4. Sound pressure 105 Pa is the pressure at sea level, or 1 atmosphere approximately. We have already seen […]

Grandma Moon Speaks: What Influences Sound?

Topics Covered: Pressure and Temperature Pascal Threshold of Hearing Nature has give us two eyes and two ears but only one tongue – so that we should hear and see more than we speak – Socrates It is common for people to create reference standards, so that things can be measured according to these standards. […]

Grandma Moon Speaks: What is Sound?

Topics Covered: What is Sound? Speed of Sound The eyes see everything but themselves – Yugoslavian Proverb Sound is a sensation perceived by ears due to vibrations or oscillations. One big difference between sound and light is that sound needs a medium for propagation. You can’t hear anything in a vacuum, which is why you […]

Hearing vs Listening

“Okay, I’m listening.” “No, you’re not. Before I start, there’s a little chore you need to do.” “Sure, Grandma Moon.” I should have stayed in Digitown and never returned, he thought. “My cat’s stuck in the attic. Get her for me, will you?” “How did it get stuck?” “We’ll ask her when you bring her […]