Lutholiveira.assignment week 1 audio basics
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This document provides an introduction to key concepts in audio basics: propagation, amplitude, frequency, and timbre. It defines each term, explaining that propagation refers to how sound waves transmit through a medium, amplitude is the loudness of a sound wave measured in decibels, frequency is the number of cycles per second measured in Hertz, and timbre is the unique tone quality or color of a sound. The document aims to educate readers about the basic properties of sound to improve their music production skills.
Lutholiveira.assignment week 1 audio basics
- 1. AUDIO BASICS: PROPAGATION, AMPLITUDE, FREQUENCY, AND TIMBRE Luth Oliveira, Salvador, BA, Brazil
- 2. Introduction Hi, I'm Luth Oliveira from Salvador, Bahia, Brazil, and this lesson is for week 1 of Introduction To Music Production at Coursera.org. I will be teaching the audio basics: Propagation, Amplitude, Frequency, and Timbre.
- 3. Basic properties of Sound As important as start producing, learning some basic properties of sound let us aware of what we are really matipulating. These properties are known as: Propagation, Amplitude, Frequency and Timbre.
- 4. Propagation It is the act or process of propagating, especially the process by which a disturbance, such as the motion of electromagnetic or sound waves, is transmitted through a medium such as air or water. (American Heritage Dictionary) Besides the medium, other factors can affect the speed of sound, for instance, the temperature. But in our condition, we will conceed the speed of sound around 340 m/s through the air in standard conditions of temeperature and pression: 20ºC/68ºF and 1atm(sea- level).
- 5. Amplitude The absolute value of the maximum displacement from a zero value during one period of oscillation. (Dictionary.com). In other words, it is the extension of the wave, measured in decibels (Db). The volume of sound is proportional to the amplitude of the wave. The higher is the amplitude, the higher is the volume and vice versa.
- 6. Amplitude x Loudness Although the relation between the two terms, they are differen in their applications. Amplitude is something measurable by a computer, and loudness is our perception of that.
- 7. Frequency It is the number of cycles per unit of time and is measured in Hertz (Hz).
- 8. Frequency x Pitch Like Amplitude, Frequency is related to another term but can not be interchanged. Frequency is what the computer measure and pitch is something that we percieve.
- 9. Timbre Also known as tone color or tone quality, timbre is the quality of a musical note, sound, or tone that distinguishes different types of sound production, for instance the sounds of musical instruments. The example below shows the different wave forms for the same note playied: A, 440Hz.
- 10. Thanks for reading. Have a nice course!!!