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Adding sound

From: Interactive Data Visualization with Processing

Video: Adding sound

One of the lesser-used functions of Processing is its ability to work with sound, both in terms of creating sound synthesis, sound Processing, and the exporting and playing of sounds. In this movie, I just want to show you the simplest-possible thing where we actually have just a sound file that has played as part as the Processing sketch. Start by putting a little comment here at the top of my sign. Now, in order to do this, we're going to need to import a library. It's one that comes with Processing, but it needs to be added. So, I come up here to Sketch, to Import Library, and we're going to use this one right here.

Adding sound

One of the lesser-used functions of Processing is its ability to work with sound, both in terms of creating sound synthesis, sound Processing, and the exporting and playing of sounds. In this movie, I just want to show you the simplest-possible thing where we actually have just a sound file that has played as part as the Processing sketch. Start by putting a little comment here at the top of my sign. Now, in order to do this, we're going to need to import a library. It's one that comes with Processing, but it needs to be added. So, I come up here to Sketch, to Import Library, and we're going to use this one right here.

It's called minim. I am going to add that, and I will put my little comment back up at the top. And it brings in several blocks of code that it's going to be working with. That's fine. Now all I need to do is I need to create a minim object. That's something that's going to have the actual sound in it. I am going to put soundCode. Minim is like the variable type, and soundCode is what I'm declaring it as. Then we're going to do this little AudioPlayer function that we call birdSong; that will be the variable. Then I do the standard void setup, and I don't need a lot here.

I'm going to make this window a little different. I will do 400 x 250. Then I'm going to bring in a picture. I have a picture of a bird that I'm going to put in here. So, that declares the variable that I have a image, the variable type. Actually, the object is PImage. I am declaring bird, and then I'm going to put bird = loadImage, and then in parentheses and quotes, I need to put the exact name of the file. Although it occurs to me, I actually haven't added this one to the folder yet.

I'm going to scoot this Processing window over for a moment. And these are the files that exist in the Exercise folder, but they're not yet added to the sketch. I have an image file and I have a WAV file. So, I'm going to take just the both of those and drag them onto the Processing sketch. Now, you will see that it says 2 files added to the sketch. In fact, if I click on the Sketch folder, go to data, they've both been copied into there. So, that's exactly what we need. I will come back to the Processing window and open it up again. Then I need to place the image, image(bird and I'll put it on top-left corner.

I'm going to make it go the width of the window, and the height. Great! And now I just need a little bit of code for the sound. So earlier, at the top, I said I have created a minim object called soundCode. So, I'm going to refer back to that one right now, and I have to do new Minim and then I use (this). It's kind of a funny way to do it, but that refers back to the most recently created object. Then I'm going to call it birdSong = soundCode, and then what we're going to do with that object that I've created now is we're going to do the loadFile command, and we're going to load in there ("bird.wav"). That's the name of the file, so quotes and parentheses and a semicolon.

I need to add one line of code here, birdSong.play, so it will actually play on launch. And that finishes that block of code. Now, there is one other block that we're going to need to do that's a little unusual. Interestingly, we have a setup block here, but we're not going to have a draw block because we don't need anything that cycles. But the developers of Minim are very clear that you need to add a special block to stop all the functions. So, I'm going to type in one here called void stop, and I'll put in those curly brackets. This one has three commands. First, there is the birdSong.close is our first one, and then the second one is soundCode.

That's another one of the things I declared. That one I need to do stop. And then the last one goes by the humorous title of the super.stop. This is necessary because the Minim library can't connect with external hardware like MIDI equipment, and it needs to make sure that all the channels are shut off. So this is just something to always add at the end. I'm going to save that, and I'll press Ctrl+R to run on a PC, or Command+R to run on a Mac. (music playing) And there we go! I have a picture of a bird and I have a birdsong.

And now I'm going to stop it all and do my stopping. Let me just mention one thing: Minim is a very well-developed library for sound Processing. Even though that's not something that happens very often with Processing, it is still something very capable of it. I do want to recommend that you take a look at another library that's called Beads, and it's at beadsproject.net. It's also a very well-developed sound library for Processing. And in fact, there is even a book that's available in hard copy or electronically, by Evan Merz, called Sonifying Processing: The Beads Tutorial.

And if you're interested in using Processing with sound, I suggest you take a close look at that one as well.

Show transcript

This video is part of

Image for Interactive Data Visualization with Processing
Interactive Data Visualization with Processing

72 video lessons · 12129 viewers

Barton Poulson
Author

 
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  1. 3m 16s
    1. Welcome
      58s
    2. What you should know
      1m 22s
    3. Using the exercise files
      56s
  2. 11m 51s
    1. Overview of data visualization
      11m 51s
  3. 11m 53s
    1. Installing Processing
      3m 38s
    2. Overview of Processing
      4m 5s
    3. Exploring libraries
      4m 10s
  4. 1h 1m
    1. Basic setup
      7m 31s
    2. Drawing points
      4m 37s
    3. Drawing lines
      5m 6s
    4. Drawing ellipses and circles
      5m 24s
    5. Drawing arcs
      6m 54s
    6. Drawing rectangles and squares
      4m 58s
    7. Drawing quadrangles
      3m 25s
    8. Drawing triangles
      2m 55s
    9. Drawing polygons
      3m 37s
    10. Drawing simple curves
      4m 54s
    11. Drawing complex curves
      6m 46s
    12. Drawing Bézier curves
      5m 38s
  5. 54m 3s
    1. Introduction to variables
      10m 44s
    2. Understanding variable scope
      6m 53s
    3. Modifying variables
      9m 8s
    4. Creating arrays
      9m 53s
    5. Modifying arrays
      6m 37s
    6. Creating strings
      7m 3s
    7. Modifying strings
      3m 45s
  6. 1h 2m
    1. Incorporating randomness
      7m 59s
    2. Using Perlin noise
      4m 24s
    3. Shuffling with Java
      3m 30s
    4. Specifying line attributes
      8m 2s
    5. Changing placement modes
      5m 45s
    6. Understanding color attributes and functions
      4m 16s
    7. Exploring color spaces
      7m 44s
    8. Using color palettes
      7m 5s
    9. Transforming the grid
      8m 38s
    10. Exploring the attribute matrix
      5m 33s
  7. 52m 7s
    1. Building code blocks
      5m 57s
    2. Writing a while loop
      3m 52s
    3. Using for loops
      5m 35s
    4. Creating conditionals
      14m 50s
    5. Working with easing
      10m 51s
    6. Creating spirals
      11m 2s
  8. 18m 55s
    1. Mouse tracking
      3m 54s
    2. Hovering and clicking
      11m 16s
    3. Understanding keyboard interaction
      3m 45s
  9. 27m 32s
    1. Specifying fonts
      6m 43s
    2. Using images
      5m 51s
    3. Playing a video loop
      6m 20s
    4. Exporting video
      3m 47s
    5. Adding sound
      4m 51s
  10. 20m 49s
    1. Creating functions
      11m 48s
    2. Creating classes and objects
      9m 1s
  11. 31m 10s
    1. Using embedded data
      5m 26s
    2. Working with appended text data
      6m 4s
    3. Working with appended tabular data
      10m 26s
    4. Reading XML data
      9m 14s
  12. 48m 17s
    1. Generating dot plots
      11m 11s
    2. Building scatter plots
      10m 0s
    3. Making line plots
      9m 55s
    4. Creating bar charts
      9m 12s
    5. Checking out examples of maps, hierarchies, and networks
      7m 59s
  13. 20m 57s
    1. Introducing some principles of 2D design
      13m 44s
    2. Understanding color theory
      7m 13s
  14. 24m 46s
    1. Interacting with zooming, rotating, and sliding
      6m 26s
    2. Implementing slicing
      6m 47s
    3. Using rollovers
      5m 58s
    4. Introducing the GUI libraries
      5m 35s
  15. 10m 35s
    1. Sharing via OpenProcessing and other sites
      3m 19s
    2. Saving as a desktop application
      2m 42s
    3. Saving as JavaScript
      1m 47s
    4. Saving as an Android application
      2m 47s
  16. 2m 38s
    1. Where to go from here
      2m 38s

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