Help! Square waves when recording. (pic attached)

Discussion of music production, audio, equipment and any related topics, either with or without Ableton Live
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Aequitas123
Posts: 1204
Joined: Wed Oct 18, 2006 3:58 pm

Help! Square waves when recording. (pic attached)

Post by Aequitas123 » Mon Jan 18, 2010 10:39 pm

Recording into Live with an SM57 running XLR into a Tascam US-428 and getting this...

http://i.imgur.com/J61Yj.jpg

whats causing this?!

Tone Deft
Posts: 23565
Joined: Mon Oct 02, 2006 5:19 pm
Location: SF, CA

Re: Help! Square waves when recording. (pic attached)

Post by Tone Deft » Mon Jan 18, 2010 10:41 pm

does it sound bad?

look at the numbers, how close are you zoomed in? what's the resolution of what you're looking at? at 48kHz how often are samples taken?

think about it...
oddstep wrote:I agree with all of this. I'm just bored of writing "its music, just listen and trust your judgement"

Aequitas123
Posts: 1204
Joined: Wed Oct 18, 2006 3:58 pm

Re: Help! Square waves when recording. (pic attached)

Post by Aequitas123 » Mon Jan 18, 2010 10:45 pm

Hey Tone,

It sounds fine but it looks scary. Running at 48kHz. Could the US-428 be a poor AD/DA converter? or could it be that running the 57 without a High-Z converter causes lower resolution?

Tone Deft
Posts: 23565
Joined: Mon Oct 02, 2006 5:19 pm
Location: SF, CA

Re: Help! Square waves when recording. (pic attached)

Post by Tone Deft » Mon Jan 18, 2010 10:48 pm

it's fine, think about it...

you're zoomed way into the waveform (I always type waveforum, argh!!)

at 48kHz samples come in every 1/48,0000 per second, that's 20.83333333 microseconds, or roughly 50 times every millisecond. so between the 35.857 and 35.858 markers (that's a length of 1 millisecond) there are 50 samples, you're seeing those samples.

use your ears.
oddstep wrote:I agree with all of this. I'm just bored of writing "its music, just listen and trust your judgement"

Aequitas123
Posts: 1204
Joined: Wed Oct 18, 2006 3:58 pm

Re: Help! Square waves when recording. (pic attached)

Post by Aequitas123 » Mon Jan 18, 2010 10:52 pm

thanks a lot! :mrgreen:

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