Mixing Audio with Audacity

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來自 University of Houston System 的課程

Powerful Tools for Teaching and Learning: Digital Storytelling

61 個評分

University of Houston System

Powerful Tools for Teaching and Learning: Digital Storytelling

61 個評分

Powerful Tools for Teaching and Learning: Digital Storytelling introduces educators to digital storytelling and explores ways to use digital stories to enhance students’ learning experiences. The course is designed to be comprehensive yet fundamental. By comprehensive we mean that the course provides a solid foundation for all of the components of a digital story and illustrates these components with tutorials, example stories, and links to additional readings. The course also provides a hands-on opportunity for learners to create their own digital stories. The course is fundamental because it covers the basic process of creating a digital story starting with just a simple script and as little as one image. This course is intended for K-12 teachers in all disciplines, although it is open to anyone with an interest in digital storytelling. Course participants will use WeVideo (https://www.wevideo.com/), a free web-based video editing program, to create a digital story that could be shared both online and with students in the classroom. Teachers in the state of Texas may be eligible to receive Continuing Professional Education units if they complete the major requirements of the course.

從本節課中

WEEK 3

In week 3, we will focus on how you can record audio narration that will be used in your digital story. We will examine some of the most common types of microphones and recording devices that you can use to record the script you wrote. We will also demonstrate how to record and edit your digital audio files using Audacity, free audio recording software available for Windows and Macintosh computers. Of course, if you prefer, you may use any audio editing program to record and/or edit your narration. The important thing to remember is that recording your own voice is a key component of the digital storytelling process since it explains the information you are presenting and provides a personal touch to your story. We feel strongly that this part of the process should not be overlooked.This week, we will also explore how you can find and download appropriate music that supports the theme of your story. We will focus on music that is in the public domain or is free of copyright restrictions so that it can be used in your digital story legally and at no cost.

Week 3 Overview3:14

Recording Narration With a Portable Recording Device1:59

Recording Your Narration3:36

Digital Audio Formats2:16

Recording Narration with an iPhone2:04

Recording Narration with an Android Phone2:21

Downloading and Installing Audacity3:46

Recording and Saving with Audacity5:36

Basic Editing in Audacity: Removing Parts of an Audio File6:31

Mixing Audio with Audacity5:46

Finding and Using Copyright-Free Music Tracks9:45

與講師見面

Bernard R Robin
Associate Professor
Curriculum and Instruction
Sara G. McNeil
Associate Professor
Curriculum and Instruction

[MUSIC]

In this video, I'm going to demonstrate how to mix music with audio narration

that I previously recorded.

So I've imported a WAV file and

if we click Listen, we'll just a quick review of what I narrated earlier.

What is at the center of the Earth?

Why is sea water salty?

Okay, so, there is an audio recording, a WAV file that I imported.

I clicked on File, Import and

brought audio into Audacity and now I'm going to bring in

a piece of music that I downloaded from the copyright free website, Jamendo.

And, so, I'm just going to click on the file that's on my computer and

drop it into the Audacity interface.

And you'll see that the music is much longer than the audio narration.

My narration only lasts for 15 seconds, and this piece of music lasts for

almost 5 minutes.

So it's really much longer than I need.

So I'm going to just use the selection tool to come down here and

click on everything to the right, and hit the Delete key.

So I selected all of the music that I didn't need.

And I'm going to go back to my magnifying glass and

click on this to get a larger view of what I'm working with.

So here is my narration and here is the music.

And I really have more music than I need still.

So I'm going to go back to the selection tool and

come over maybe about from 15 maybe about an extra 3 seconds to about there.

And make sure I'm on the music file.

And I'm going to select that part and delete that.

And then what I'm going to do is try to see how this sounds by clicking play.

I'm going to click on my skip back to the start button to get to the beginning, and

let's have a listen.

[MUSIC]

What is at the center of the Earth?

Why is sea water salty?

Well, that's pretty good, except that the one basic problem is that

the music is too loud, it kind of interferes with my narration.

So what I want to do is bring down the volume on the music.

Now you'll notice that, in this particular file, my audio recording is single track,

minoral, and the music is double track or dual track stereo.

That doesn't really make any difference for

our digital story because we're going to convert this all down to one single file

with both the narration and the music in it.

So what I need to do is I need to bring down the volume of the music, and

to do that I'm going to click and select all of the music, and

then I'm going to go up to the Effect menu and I'm going to click on Amplify.

And amplify may seem a little unintuitive to you because normally

most people think of amplify as increasing the sound, but

you'll notice there's a slider bar here that goes to the right side where you can

increase the volume but when you get back to zero and

go to the left of zero that goes negative numbers and that's decreasing the volume.

And just from my own experience I know that

about -10db would be about the right amount.

You might need to practice on your piece of music and

pick some different settings and listen to them and see how they sound before you

pick the final perfect number for yours, but let's click Ok.

And you right away see that the wave form is completely compressed and

much smaller than it was earlier.

And if we click back to the start and

listen to this by clicking on the play button.

What is at the center of the Earth?

Why is sea water salty?

How.

That's much better.

And you can see there's a good sound to my narration and a nice

background piece of music that doesn't interfere with anything that I'm saying.

The only thing left to do is I want the music, which I've let go

a little bit longer than my narration, I want it to fade out after I stop talking.

So, if I again make sure that I have the selection tool enabled and I come down to

the music and click and drag, then I can, I can go up to the effect menu and

look for fade out, and that will then fade out that piece of music.

And if I click back here to listen to what this sounds like,

let's listen by clicking on the play button.

[MUSIC]

Fascinating look at our planet, the Earth.

[MUSIC]

And that was a nice fade out.

It went about three or so seconds, three or

four seconds longer than my narration did and I might have like a credit slide or

a black slide at the end as the music nicely fades out.

So that's an easy way to mix music with audio narration.

Of course, if I wanted to save this, I would save both the project file and

then export the final audio as a WAV file.

But I would be sure to save the project in case I wanted to work on it

some more at a later time.

[MUSIC]

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