Grandma Moon Speaks: Loudness or Volume

Topics Covered: Loudness Phon and Sone Music is everybody’s possession. It’s only publishers who think that people own it – John Lennon The above is a section of the song Black or White by Michael Jackson from three different releases. Same song, but mixed to sound louder with each passing release. Our perception of sound […]

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 […]