Showing posts with label amplitude. Show all posts
Showing posts with label amplitude. Show all posts

Tuesday, June 3, 2014

Music Theory 101 #6: The Basic Skills of Music; Dynamics

Hello everyone and welcome back to the next episode of Music Theory 101. Sorry about vanishing, but between the end of school, the trip/ meeting in Minneapolis and then getting two major plans set up (announcements ASAP) I literally had no time to keep working. This will be the end of the explanations and salutations though because we have a month’s worth of material to make up in this extended post!

Music Terms:

~Amplitude
~Dynamics
~Forte and Piano
~Mezzo
~Adding -issimo (fortissimo, pianissimo)
~Fortepiano and Pianoforte

Catching everyone back up to speed, we have gone through posting about the basics of music and have made our way through two of the six: Pitch and Rhythm. This time, we move onward to the next topic for discussion; dynamics. Dynamics are the musical equivalent to amplitude. For those in need of a quick refresher, amplitude is the expansion or contraction of the wave’s height causes the wave to have more or less force. This increase or decrease in power can cause our ears to perceive what we hear to be louder or softer. That’s honestly all there is to this one in terms of science and terminology. However, dynamics play a more important role in music.


Music’s emotional weight is primarily built off of dynamic control. It is true to the point of listening to movies. Think to the last movie you’ve seen and how the dynamics of the music played into each point that the scene was trying to make. For example, whenever there is a romantic scene and there is a couple talking, the music backs off but you can hear that they are playing. Once they start to kiss,  the music becomes really loud to show that emotion’s weight. The same can be argued for any kind of music. A classical example is “March of the Scaffolds” by Hector Berlioz. The beginning starts out low and quiet until the cellos and bass come in with the motif of the movement. Every time there is portrayed a horrifying moment or a moment of triumph in the movement then the horns play loud. Whenever the thought of his beloved come to him, then it is soft and tender. Modern music examples is the difference between a rock ballad and heavy metal. The difference between trance/chillstep and hard style/brostep. Dynamics control a lot in music.

Now that we know what it is and what they do, why not explain how they are in music. Before we begin however, it should be noted that they are very situational. None are defined by an absolute “loudness” like pitch and other things in music. Dynamics are based off their original words in Italian and use the first letter to represent the dynamic. Forte is considered to be “loud” and is shown by adding an italicized f. Piano is considered “soft” or quiet and is shown with an italicized p. Next thing to know about with dynamics is the mezzo range. Mezzo means medium and if it’s used as a prefix, it means either medium loud, mezzo forte or mf, or medium soft, mezzo piano or mp.

There are also extremes by adding more of each letter into the mix, getting fortissimo, ff and pianissimo, pp. When you add the -ssimo suffix; meaning very, you can create more extremes for your dynamic timeline. You can add more letters to mean more contrast, such as fffffffffff. Just be warned that the mentioning of relations of dynamics are meant to be taken. So don’t expect a cannon like sound from your instruments… Unless you use a cannon. The last thing related to dynamics I want to mention is the case of fortepianos. Fortepiano and it’s reverse pianoforte are used for extreme changes in dynamic that are meant to last temporarily. They are played as they are read. In the case of fortepianos, fp, they should be played loudly and then soft. The reverse is true for pianofortes, though they aren’t as commonly used.


There is one other dynamic term that I will go over during our next episode. I hope this extended post was worth the wait! Keep an eye out for announcements in the next day or two.

Monday, January 20, 2014

Music Theory 101 #1: The Basics of Sound

Hello everyone and welcome back to not only the newest episode on ASMTB but to the first episode of my new music theory lessons series.  As I had mentioned in the announcements post at the beginning of the month, I have been planning a lot of new changed from feedback I have received saying some things need to be simplified. Being a person who tends to over think things, I have been thinking of a way to do just that: simplify (I smell an oxymoron). This time around I will make theory less “dense” of reading than before in order to make sure you understand what I am trying to convey to whomever is reading this because let’s face it: Music theory can be hard to understand. It has a moment or two where you can look at it and it makes perfect sense, and then look again and our understanding has vanished completely. With that said, should I not explain something very well, then feel obligated to email me, Faith, or leave a comment below to see if someone else can help you. We want to help ensure that you get a well explained understanding of how theory should be, especially if you’re taking the time to read this. With that said, let’s continue onto the beginning of this discussion.

For time’s sake, I’m going to skip over a very detailed understanding of what sound is but basically sound is a type of energy that our ears pick up through the ear drum. Whenever we interpret sound energy, there is a wave of energy from a source that is picked up by our ears. This wave can be altered in four (4) ways: pitch, height, length and shape. These four things will play a big part into understanding music in a moment.

Example of Frequency
Source: TutorVista


Pitch; better known as frequency, is the variable that gives us the sound of the note you hear. For example, play a note on any instrument such as playing a key on a key board, plucking a string on a stringed instrument or hum a pitch.  Whatever that note is, it has a certain Hertz or number of wave cycles that go past a point per second. So if you take A 440 then it means there are 440 wave cycles going to your ear per second. By jumping down to C 262 or middle C then we have 262 wave cycles per second. Every note has it's own hertz and repeats as you go up or down a certain number of cycles. Though this is the most obvious part to music, this will play a big role in understanding music.



Example of Amplitude
Source: The Physics Classroom
Height, also known as amplitude controls the volume behind the tone. The louder the sound is, the higher the wave's height will be and the more force it will have behind it. Softer sounds are represented as expected, smaller wave height will be. This one is really as obvious as it sounds. Duration is the same way. Duration is the measurement of how long the sound can be heard and is a measurement of time.  The longer the wave is the longer the sound can be heard.


Example of Timbre
Source: Swasti's Design Blog


Finally there is the shape of the wave, known as timbre (pronounced tam-bur). Every instrument has its own timbre and also its own wave pattern. For example, a piano looks one way while a violin looks another. Every variation changes the way the music sounds to our ears. It’s just like taking a computer and running a “sine wave” or a traditional wave like U and n’s, a sawtooth wave (which as the name sounds, looks like the teeth of a saw or W’s) or a piano's wave pattern, which is shown to the right.

That's all for today, and I hope this style is easier to understand. Next time I'll pick up with why you should know these terms and how they apply to music. As always, if you haven't subscribed then please do by filling out the email link to the right (don't worry, it only emails you when there are new posts on here). If you already follow us then thank you as always and thanks for reading!