Topic: WTFWAV?

[newplanet7]

I downloaded this show last night.
It doesn't sound bad but the left channel sounded a little off/saturated.

I decided to drop it into SF8 and get the skinny.
Here's a screenshot.
SENNHEISER K6/ME67(shotgun)>MP-2>SBM-1>D-8

Anyone have any clues?
The right channel looks somewhat normal + normalized
but the left?

[easy jim]

DC offset in the left channel, maybe?

[newplanet7]

To me it looks as if each channel was normalized independently,
the left using rms normalizing and the right peak.

Not sure though.
I know I haven't seen this before.
 

[setboy]

it looks kind of brickwalled

[kskreider]

it looks kind of brickwalled

[easy jim]

^ well, it's not zoomed in far enough to tell, but I believe it may be a DC offset in the left channel because the wave form does not seem to center on the zero line and it is also asymetrical (the peaks only look squashed on the bottom).  DC offset may also explain the the "little off/saturated" character of the sound.

[JasonSobel]

it looks kind of brickwalled

thirded.

I'm not familiar with those sennheiser mics.  are they phantom powered?  or battery powered?  either way, my first guess is that the left mic was under-powered.

[twatts (pants are so over-rated...)]

Is that the Japan MMW show???  I was thinking about DLing it...

Terry

[newplanet7]

Is that the Japan MMW show???  I was thinking about DLing it...

Terry

Yep.
It doesn't sound all that bad.
Hell most of the general population at etree didn't hear it judging by their comments.
Great show though reguardless.

[setboy]

'Not sure, but doesn't brickwalling imply clipping? 

Brickwalling and clipping are two different things from what i have read anyways.

[JasonSobel]

'Not sure, but doesn't brickwalling imply clipping? 

Brickwalling and clipping are two different things from what i have read anyways.

yes, brickwalling and clipping are two distinct things.  Brickwalling is when the analog circuitry overloads before the A/D reaches 0dBfs (the digital clipping point).  Brickwalling can be hard to notice during a show, because your digital levels never clip or reach zero, so you might think you are OK.

In this case, my guess is that the brickwalling was caused by an underpowered mic.  Typically, when mics have less power than they should, the max SPL that they can handle decreases.

[newplanet7]

Thanks to all involved here.

That is a great explanation jason.
Betting that would be it.
I just love checking this stuff out.

[Dr.FOB]

One looks mic in the other line in and levels were adjusted in an attempt to compensate...