The Sound Editor allows you to record and edit your own sound files. Edited sound files can be saved on your computer and then used in the Sound block, just like any existing EV3 sound file. You can also edit existing sound files.

Select Sound Editor from the Tools menu to open the Sound Editor. Open an existing sound file or record your own sound, use the sliders to crop the sound file, then save the file.

You can import sound files of nearly any length into the Sound Editor, but only sound files no longer than five seconds (maximum 64 KB) can be saved. Lengthy load times may be expected for large sound files. The Sound Editor accepts .wav, .mp3 and .rsf sound files.

Record and Edit Sounds

Steps

	Open a compatible sound file from your computer.
	Record your sound.
	Play back the recorded sound.
	Move the left and right sliders to select the best portion of your sound for use.
	You can zoom in and out to focus on the part of the sound you want.
	Adjust the playback volume.
	Save the edited sound file.

Record

You can use a microphone built in or connected to your computer. You can record up to 10 seconds of your own sound by clicking the record button. The recording will automatically stop after 10 seconds. Clicking the record button will overwrite any sound already recorded.

Adjusting the size

The sound file (waveform image) remains red between the sliders if the file is too large. It will turn purple when the waveform image between the sliders is about 5 seconds long. The Save button then also becomes active. The more sound files you create and use, the less memory space you will have on your EV3 Brick. See Managing files and Memory for more information about the memory capacity of your EV3 Brick.

Save Project

By default, the sound file is saved as an uncompressed file to the Sounds folder of the EV3 Software. Saved files automatically appear in the Sound Block list in Play File Mode.

Playing the edited sound on the EV3 Brick

Your edited sound file will be listed when the Play File mode is selected in the Sound block. Sounds that are specific to your current Project will be listed in the Project Sounds folder. The standard Sounds that are available to all projects are listed in the LEGO Sounds folder. See Sound Block for more information.