Sound waves can be edited in Scratch. Why would you want to edit a sound wave? These waves give you control over effects, like fading in, fading out, making a sound louder, making it quieter, making sounds silent, and more. In this movie, see how to edit the sound waves of a sound object in Scratch, and how to use the behind-the-scenes filters to make changes that aren't directly shown in the Scratch interface.
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- [Voiceover] Let's say we wanted to modify…a sound effect once we've created it.…So here we have our lion and when we click on him…he makes a chomp sound (chomps).…What if we wanted to make that sound louder,…or if we wanted to modify the sound waves in some way?…Well all you need to do is select your sprite,…go to the sounds tab and select your sound…and from there you can see the sound wave.…You can select the sound wave by…clicking and dragging horizontally…and once you have a portion of the sound wave selected,…you can actually preform modifications to it.…
Under edit, you can choose to cut, copy, paste,…delete or select all of a sound wave.…For now I'm not going to do that…but we can also go to the effects section…and we can make this, for example, louder.…So only the part that I have selected has become louder.…Now if I want to play the whole thing…I need to make sure that I don't have…any of it selected, so I'm going to click a few times…until I see just a solid line…and then I'm going to click again…to put the solid line at the beginning of the sound…
He starts with demonstrating how to create your first project and gather the artwork (aka sprites) and other assets you'll need to build it. Todd then reviews the prebuilt scripts, the bits of code that control the logic of your Scratch projects, and explains how to use the different script types for different functions, such as animating sprites, responding to events such as button clicks, and comparing values. In chapter 3, he covers costumes, and in chapter 4, he shows how to load and play sounds. Finally, he shows how to put it all together into a complete web game, which you can then share with the Scratch community.
- What is Scratch?
- Creating your first project
- Choosing a backdrop for your application
- Creating sprites (reusable graphics) in Scratch
- Working with scripts: animating objects, responding to events, and checking logic
- Switching sprite costumes
- Changing the appearance of sprites with custom-drawn costumes
- Playing sounds
- Building a game with Scratch