Why two waveforms/soundwaves Garageband acoustic guitar track

I'm relatively new to Gargeband. For some reason I'm noticing some of the acoustic guitar tracks have two (near duplicate) waveforms, one above the other, yet in other projects it is just the one. I prefer the one. I've looked through all the settings and I can't find out why. I assume it has something to do with mono vs stereo but in puts are the same on all files. I don't play with the settings in general so I don't know why they would be different at all.
Also, I notice that for some reason when I make certain edits to the double waves tracks, that segment with turn orange (such as joining two segments) and will no longer be purple. I don't really love this either. Not sure if that's a separate issue or related.

Edgar wrote:
Please note that the Recording Source is only important for recording part. You can drag stereo and mono Audio Regions around between Tracks because a Track itself is always "two track" aka "stereo" aka "left-right"
Actually I have to correct myself on that one because it is a little bit more complicated under the hood (strange I can't edit my own forum posts anymore, is that feature gone?)
Regarding mono (one channel) and stereo (two channel), a Track in GarageBand has has to be looked at on three stages in the signal flow of the Track.
Stage 1: Input Source of the Track
The input is always determined by the Input Source selection. If you select a one channel Audio Device then the recorded Audio Region will be mono (1-channel, single waveform). If you select a single channel of a multi-channel Audio Device (2 or more channels), then the recorded Audio Region will also be mono. If you select the stereo channel of an Audio Device, then the recorded Audio Region will stereo (2-channel, double waveform)
Stage 2: Playback of the Audio Region
You can place a mono Audio Region or a stereo Audio Region on an Audio Track. But here is the important part. The setting in the Input Source (Track Info window) affects the playback. A mono Region will be played back in mono (the same signal coming out of the left and right speaker. If you have a stereo Audio Region and selected a stereo Input Source, then the Audio Region will be played back in stereo. However, and this is potentially very dangerous, if have a stereo Audio Region and have set the Track to a mono Input Source, then any stereo Audio Region wille be played back in mono. That means it is "summed together", left channel will play through the left-and-right channel of the Track and the right channel of the Audio Region will also play through left-and-right channel of the Track.
Stage 3: Output of the Track
The output of a Track always has two channels (left, right), routed to the stereo master bus. If the Audio Region on a Track "sounds mono" or "sounds stereo" depends on whatever happens in stage 1 and 2. And also don't forget the Master Effects. Adding Master Reverb to a mono signal will "widen" the signal to sound stereo.
Hope that clarifies it
Edgar Rothermich
http://DingDingMusic.com/Manuals
'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

Similar Messages

Why two waveforms/soundwaves Garageband acoustic guitar track - again

I posted this a few weeks back and haven't had a lot of activity and was hoping someone would look at again.
I'm relatively new to Gargeband. For some reason I'm noticing some of the acoustic guitar tracks have two (near duplicate) waveforms, one above the other, yet in other projects it is just the one. I prefer the one. I've looked through all the settings and I can't find out why. I assume it has something to do with mono vs stereo but in puts are the same on all files. I don't play with the settings in general so I don't know why they would be different at all.
I got a response, but it didn't really help much:
Regarding the waveforms, you are right. On waveform is a mono Audio Region, double waveform is a stereo Audio Region. If you record on an Audio Track that is set to a mono input in the Recording Source, it will record a mono Audio Region. If it is set to a stereo input, then it will create a stereo Audio Region.
Please note that the Recording Source is only important for recording part. You can drag stereo and mono Audio Regions around between Tracks because a Track itself is always "two track" aka "stereo" aka "left-right"
Remember that GarageBand distinguishes between three different types of audio files (indicated by their color code) There are a few things to pay attention to:
Joinging MIDI Regions will create just a bigger Region ("container") including all those MIDI Events inside that new Region (container). Joining Audio Regions is different. GarageBand performs a "bounce in place". It is like a mini export, mixing those Regions together. But this is only the first step. Now it takes that newly exported Audio File and re-imports it into the Project.
Now Remember: newly "recorded" Audio Regions are purple, imported Audio Regions are yellow. What happens during the join procedure is that your recorded (purple) Audio Region become imported Audio Region and therefore change their color to yellow.
Remember the difference between the three types of Audio Regions:
screenshot from my book "GarageBand 11 - How it Works"
You have to be aware of that little side effect of the join process. Yellow Audio Regions cannot have a Follow Pitch feature anymore. This is the checkbox in the Track Editor "Follow Tempo & Pitch". Purple Regions can follow both your Project's Tempo and Key (Pitch), similar to Apple Loops. Yellow Regions can follow the Tempo but not the Key of your Project!
So I responded, but did not get an answer:
Ok... for some reason this still isn't making sense. Just yesterday I created a new acoustic project and the opening acoustic track displays one wave (mono), then today, without ANY changes, I do the exact same thing and it displays dual waves. NOTHING has changed. The only areas where I see anything that an relate to this is in Preferences ->Audio/MIDI, where Audio Output is: Built-in and Auido Input is Generic USB (for my microphone). I also see on the main screen on the lower right area it shows Input Sourse: Mono 1 (Generica USB...). So that is it. This is the same for both occurrences where one shows two waves and the other 1 wave. It's just completely random.... there are no changes, no additions or plug-ins, just, "ok, today we're going to show two waves"!!

I posted this a few weeks back and haven't had a lot of activity and was hoping someone would look at again.
I'm relatively new to Gargeband. For some reason I'm noticing some of the acoustic guitar tracks have two (near duplicate) waveforms, one above the other, yet in other projects it is just the one. I prefer the one. I've looked through all the settings and I can't find out why. I assume it has something to do with mono vs stereo but in puts are the same on all files. I don't play with the settings in general so I don't know why they would be different at all.
I got a response, but it didn't really help much:
Regarding the waveforms, you are right. On waveform is a mono Audio Region, double waveform is a stereo Audio Region. If you record on an Audio Track that is set to a mono input in the Recording Source, it will record a mono Audio Region. If it is set to a stereo input, then it will create a stereo Audio Region.
Please note that the Recording Source is only important for recording part. You can drag stereo and mono Audio Regions around between Tracks because a Track itself is always "two track" aka "stereo" aka "left-right"
Remember that GarageBand distinguishes between three different types of audio files (indicated by their color code) There are a few things to pay attention to:
Joinging MIDI Regions will create just a bigger Region ("container") including all those MIDI Events inside that new Region (container). Joining Audio Regions is different. GarageBand performs a "bounce in place". It is like a mini export, mixing those Regions together. But this is only the first step. Now it takes that newly exported Audio File and re-imports it into the Project.
Now Remember: newly "recorded" Audio Regions are purple, imported Audio Regions are yellow. What happens during the join procedure is that your recorded (purple) Audio Region become imported Audio Region and therefore change their color to yellow.
Remember the difference between the three types of Audio Regions:
screenshot from my book "GarageBand 11 - How it Works"
You have to be aware of that little side effect of the join process. Yellow Audio Regions cannot have a Follow Pitch feature anymore. This is the checkbox in the Track Editor "Follow Tempo & Pitch". Purple Regions can follow both your Project's Tempo and Key (Pitch), similar to Apple Loops. Yellow Regions can follow the Tempo but not the Key of your Project!
So I responded, but did not get an answer:
Ok... for some reason this still isn't making sense. Just yesterday I created a new acoustic project and the opening acoustic track displays one wave (mono), then today, without ANY changes, I do the exact same thing and it displays dual waves. NOTHING has changed. The only areas where I see anything that an relate to this is in Preferences ->Audio/MIDI, where Audio Output is: Built-in and Auido Input is Generic USB (for my microphone). I also see on the main screen on the lower right area it shows Input Sourse: Mono 1 (Generica USB...). So that is it. This is the same for both occurrences where one shows two waves and the other 1 wave. It's just completely random.... there are no changes, no additions or plug-ins, just, "ok, today we're going to show two waves"!!

Compare ipad2 with ipad3, garageband for acoustic guitar and voice recording, backing tracks.

I am interested in purchasing an ipad for recording music using garageband, acoustic guitar & vocals, and using to add rhythm/bass, to create tracks to use in performing solo gigs.
After reading about problems many were experiencing with NOISE after upgrading to an ipad3, and a GB upgrade, I am not sure if this
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walkman1187

Assuming it does not have a pickup, any instrument that the microphone picks up can be recorded.
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I am trying to record an acoustic guitar on garageband (using my actual acoustic guitar), however the sound of the low strings sounds really muffled and low quality. i am using the built-in mic on my Mac to do this, not any external equipment. Is it advisible to always use an external mic and/or directly plug any instrument directly into the Mac? Are there any methods to improve the sound of recording?
I also purchased an apogee Jam device to plug electric guitar and bass directly into my Mac and record. It seems to be working, however, i cant get any output sound at all (when playing or recording). it does record, but only like an unplugged electric instrument would sound. On the 'Track' menu at the top, the option to 'show monitoring for real instrument tracks' is greyed out when i have the Jam plugged in. i cant find any way to hear the instrument in Garageband at all.
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Sounds like the problem is happening before the mac. Who makes the acoustic pickup and what model is it. Also how are you connect to the mac adapter or interface?

I'm using Garageband 09 and I wanted to know can Garageband transcribe my guitar parts? I'm using an Acoustic guitar.

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Edgar Rothermich
http://DingDingMusic.com/Manuals/
'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

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Why two waveforms/soundwaves Garageband acoustic guitar track

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