I did my first guitar recording using Cascade Fathead II and SM57. Session was great once I listen to play back I heard a mild distortion at times. Spoke to a Master Engineer and he had me looked at the wave files. He said look for flat top waves and sure enough where the distortion was the waves were flat on top. I was confused because my levels were no where near clipping, he mentioned gain stagging and it made since. There was a limiting setting on my interface that I did not know what it did now I do. Does Sonar have a declipper tool or does any know how I can save my recoding? Rerecording is not an option

Did you adjust the fader on the track you recorded? 

I don't know of anyway to fully recover a wave file that is distorted. However, if it is only mildly clipped, you could probably try using an "audio declipper" to salvage what you can.
 
Regards,
Dan
 

John
Did you adjust the fader on the track you recorded? 

No because the audio signal was well below clipping, it is my fault now that I know better, I have a video clip from my phone just now sure how to add it in the forum

Oh, and Sonar does not have a declipper. There are several I saw in Google search, some were free. I'd make a copy of the WAV file before trying any of them though...
 
Regards,
Dan
 

BMOG

John
Did you adjust the fader on the track you recorded? 

No because the audio signal was well below clipping, it is my fault now that I know better, I have a video clip from my phone just now sure how to add it in the forum

I may not have been clear. While you were recording did you adjust the fader to set the level? The reason I ask is if you did nothing and recorded the signal and it was below clipping there is no reason for it to clip. 

John

BMOG

John
Did you adjust the fader on the track you recorded? 

No because the audio signal was well below clipping, it is my fault now that I know better, I have a video clip from my phone just now sure how to add it in the forum

I may not have been clear. While you were recording did you adjust the fader to set the level? The reason I ask is if you did nothing and recorded the signal and it was below clipping there is no reason for it to clip. 

You are correct No adjustments with fader during recording BUT I had a limiter setting on during the recording session from my interface software I was not aware of. So when the audio hit the limiter threshold it flat top the signal.

BMOG

John

BMOG

John
Did you adjust the fader on the track you recorded? 

No because the audio signal was well below clipping, it is my fault now that I know better, I have a video clip from my phone just now sure how to add it in the forum

I may not have been clear. While you were recording did you adjust the fader to set the level? The reason I ask is if you did nothing and recorded the signal and it was below clipping there is no reason for it to clip. 

You are correct No adjustments with fader during recording BUT I had a limiter setting on during the recording session from my interface software I was not aware of. So when the audio hit the limiter threshold it flat top the signal.

I'm sorry to hear that. I don't think there is a good way to fix this.  You could try a declipper but I wouldn't hold out much hope.
 
If you do want to show a picture of it all you need do is use a hosting website like photobucket and use the forum software to post it here. If you need instruction on this I can help with that.
 
 

Here a clip from my cell phone

That image is too small for my eyes but it does look like it may be too flat for a declipper to do any good. In the future you may want to use confidence recording. What this does is show the waveform as it is being recorded. You toggle it on on the track you are recording to. 
 
It might help in preventing this sort of thing.