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Basics for editing audio from a cassette tape

I am new to GarageBand and and am not seeking to acquire experience in multi-track editing. Just something very basic. I have cassette tape conversations between my father and grandfather that I want to import into GarageBand, then edit the audio to improve it. Here is what I want to do:

  • Raise the voice level on the tape
  • Reduce / eliminate some mild background hiss
  • Speed-up the audio by 3-5% as it seems the original recording is a bit slow
  • Enhance voice quality / sharpness

I am using a Mac - V 10.15.3, with GarageBand - V 10.3.4. I have looked for YouTube tutorials, but they are not specific and refer to early versions of GB. My library copy of a GB book is from 2004. It took me several years to master iMovie, but I did it and it is great. In the case of GB I just want to learn the basics, described above.

Can you tell me how to do the above four points, or refer me to a couple of concise tutorials?

Thank you,

HDP

iMac Line (2012 and Later)

Posted on Mar 14, 2020 2:14 PM

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Question marked as Top-ranking reply

Posted on Mar 16, 2020 1:50 PM

Dear iMacarroni,


Your support and suggestions have been invaluable. As a novice to GarageBand I appreciate your patience in outlining the basic steps for me. I have now edited and saved as MP3 several of those family conversations. Future generations will find them very interesting.


Thank you very much,

HDP


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7 replies
Question marked as Top-ranking reply

Mar 16, 2020 1:50 PM in response to iMacarroni

Dear iMacarroni,


Your support and suggestions have been invaluable. As a novice to GarageBand I appreciate your patience in outlining the basic steps for me. I have now edited and saved as MP3 several of those family conversations. Future generations will find them very interesting.


Thank you very much,

HDP


Mar 19, 2020 3:09 PM in response to HDP

Now that I have advanced my editing, I have two more questions about editing a conversation originally made on cassette tapes that I imported into GarageBand.


Volume adjustment between regions on a single track

How do I adjust the volume levels (to standardize them) on the 50+ regions I now have spliced together on my single track? Better yet, can I automatically adjust to a standard volume level the volume levels on the 50+ regions that now form this 2-hour track?


Speed adjustment

Now that my 2-hour track is built (with 50+ spliced-together regions) can I increase the speed of the entire track from 120 BPM to 126 BPM? Is the way to do this the way I saw on a YouTube video, that recommends:

  • double click on my track, to bring-up the Editor controls on the bottom-half of the screen
  • click on the small flex box (enable this function)
  • On the top of screen BPM Tempo box input the desired tempo number
  • then click save


Will appreciate your suggestions on these two points, and any other editing insights.

Thank you,

HDP

Mar 15, 2020 9:47 AM in response to HDP

Greetings,




Reading your question reminded me that I also have cassettes of my father talking that I would like to do the same thing to. I’ve been using Garageband for a long time to record myself playing instruments and singing. I know it’s capabilities and am happy to tell you that you can do all those things easily, with a quick learning curve.




The newer version of GB (10.3.4) should work essentially the same as the older. Some GUI differences are apparent, but the same processes apply. In this case once you have recorded the cassettes into GB, which, I am assuming you know how to do, you can:


1. Use the volume slider at the left of the track to increase the volume of the voice.


2. On the upper left of the GB window there are four small boxes. These open and close edit windows. The third from left opens the “smart controls” at the bottom of the GB window. There you will see two tabs, “controls” and “EQ”. The EQ window boosts and cuts specific frequencies. Play with it to get the clear sound you want. You can drag down the high frequencies (on the right side of the EQ window) to eliminate the hiss.


3. On the top (center) bar of the GB window there is a “beats and project” window (black) with a BPM number (default = 120 beats per minute) that regulates the “speed” of the track. Click, hold and slide up and down to increase and decrease the speed of the voice. (BTW, it doesn’t change the pitch of the sound unless you make other adjustments)


4.  Use step two to enhance the voice quality.


Once you get the "project" adjusted to your liking you need to export it, probably as an AAC or MP3 to create a file of reasonable size. Low quality (64 kbit/s) may be work for voice. Use the "share" pop down on the menu bar on top of the screen.

There are other options like email and save to iTunes.


You probably don’t want to use any effects, suck as reverb or echo in this situation. 


I hope this gets you started and you are successful in saving and enhancing these recordings.

Mar 15, 2020 2:24 PM in response to iMacarroni

Dear iMacarroni,


Thank you for your response - it is clear and very helpful. One additional question, please. For my first project I have just one track, and edited it to three regions. Because each region was recorded at a different time, on a different cassette player, I have made unique edits to each region in terms of volume and smart control EQ adjustments. How do I save the project with the separate volume / EQ edits in each region? Do I save each region on this single track independently? Or do I edit all three independently and somehow save them all together on the single track? Or do I need to create three separate tracks, edit them, then bring them together as a single track?


After editing each of the three regions uniquely, when I click back on the regions they do not show the original edits. I am confused how to undertake the separate edits on a single track and then save it all as a project.


Thank you,

HDP

Mar 15, 2020 3:50 PM in response to HDP

Hi again,


Glad to be of help. Here's the thing about regions. Eq adjustments apply to all the regions on each track. Volume changes can be made to any part of a track using "automation" points. Other parameters such as reverb and echo can also be changed by using automation. I suggest the following method to do what you want without using "automation".


As I said, if the regions are on the same track, the EQ and volume adjustments will apply to all of the regions. If you want to alter the EQ and volume for, let's say, three different regions (possibly due to how they were initially recorded) you will have to create three tracks and put each region in its own track. This is not hard to do.


Here's how. On the menu bar choose Track and "Create new track with duplicate settings". Do this twice and you'll have three total tracks. Each new track will appear directly below the "active track". Now, you have three separate tracks, simply click and hold on a region (best to click in the regions header bar) and drag it to the new track. You can drag it across another track to the bottom track, just don't let off the mouse until you are over the track you want to drop it on.


Now, you can EQ and change the volume with the slider on the left for each track and region separately. Please note, the slider on the left does NOT adjust the input volume while you are recording, only the output volume for the track when you mix and export it. Recording level is set in the "smart controls" window on the left. You'll see it and in general it should be up pretty high if not full right. The level of the recorded signal can be adjusted elsewhere, such as the output on the cassette deck or, if you're using an external interface, on that.


There is no reason to combine the separate tracks when you export the project. That's the main job of the DAW (GarageBand), to mix down the tracks into a stereo file. For your project I'd suggest leaving everyone panned to the center for a mono final product, but that's up to your desires too.


Ask more if I can be of more help. Happy recording.

Mar 19, 2020 4:47 PM in response to HDP

Greetings,

I'm not familiar with projects that are two hours in length. Does the volume differ greatly between the regions? There are several different ways to "normalize" output volume but without getting too technical I think the easiest way it by enabling "automation". This creates a thin yellow line through the track that represents the volume level. You "command click" on the line to create points. The points can be dragged up and down, changing the volume at that point. As you play the track you'll see the volume slider change as the track proceeds. When exported those changes will be reflected in the exported file.


Regarding speed, I don't think you have to enable "flex editing" to speed up or slow down the entire track. Just do what you said with the BPM in the "project box" on the top menu bar.


If you do something and regret it, you can always go to edit "undo" on the top menu and undo it. Or just manually undo it. Also, when you're done messing with it for the day or whatever, you have the choice to "save changes" or not. If you choose "don't save" (for a project that has already been saved at least once) it won't save any of the changes made in that editing session. It will revert back to the project's state when you opened it. It's called "non-destructive editing".


Cheers!

Mar 19, 2020 5:39 PM in response to iMacarroni

Dear iMacarroni,

Thank you for your reply. The reason the project is so long is because the project is made-up of three 45-minute cassette tape conversations which I am consolidating into one track, and in the process am editing the conversations, splicing out long pauses, irrelevant bits of talk and several long "ups". thus I am left with a nearly 2-hour Project that is on one track and is made-up of about 50 regions. Because the speed of the old tape cassettes is about 5% below normal speech cadence, I intend to increase the BPM Tempo from 120 to 126. In a test, this seems to help. Concerning your question about volume, it seems most of the regions are at a normal volume level (which can be managed by the track volume slider), but there are at least three rather long regions (4 minutes+ each) that are at low volume, that needs to be increased to the"normal" level of the rest of the regions. I will try the "automation" process you describe. Does all this make sense? I will attempt your suggestions later tonight or in the morning.

Thank you very much,

HDP

Basics for editing audio from a cassette tape

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