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Audio Basics: Propagation, Amplitude, Frequency, and Timbre.
Transcript of Audio Basics: Propagation, Amplitude, Frequency, and Timbre.
My name is Andrea Sipos and I'm from Baltimore, Maryland. Today I'll be teaching the basics of
That's all for now!
Thank you very much for exploring this topic with me!
What is it?
Propagation is sound moving through a medium.
Mediums can be water, air, the ground, etc.
Sound moves at different speeds through different mediums...
No, not at all! If you grab a dictionary, it will tell you that amplitude is "the maximum extent of a vibration or oscillation, measured from the position of equilibrium."
A high amplitude has a larger maximum extent than a low amplitude.
Sound travels about 1 mile in 5 seconds through the air. However, it travels much faster in water and non-porous metals.
There are many different factors that can affect the speed of sound through a medium, such as temperature or pressure.
Is something that can be measured by unit through a computer's system. Loudness is only the human perception of this.
are two words with very different, albeit related, meanings. They should not be used interchangeably.
Actually, it isn't! Frequency is a term that, like amplitude, has a relationship with another term but the two terms are not interchangeable. In this case, frequency is often confused with pitch.
The number of cycles of a repetitive wave-form per second. High frequency sounds have more cycles per second than low frequency sounds.
Pitch is often confused with frequency because of the relationship between frequency and pitch. A low frequency wave is heard by humans as a low pitch, while a high frequency wave is heard by humans as a high pitch.
Timbre can also be called tone color or tone quality. By definition, timbre is the character or quality of a musical sound or voice as distinct from its pitch and intensity.
In simpler terms, timbre is how one thing sounds different from another, like a bassoon from an oboe. They have different timbres.
This video gives more information and insight to what timbre really means.
Have a great day, and good luck with the rest of our class!