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Author Topic: average levels  (Read 4353 times)

bobkatz

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Re: average levels
« Reply #15 on: July 26, 2004, 01:56:22 PM »

Oldfart wrote on Sun, 25 July 2004 22:20

To DC,

my WL tools are giving me this information.

Oldfart


Aha, you mean "Wavelab". Well, its VU meter is 3 dB off from the AES standard. VU and peak meter should read the same with sine wave to meet the AES spec AND to meet the practices of the last 60 years! For example, with sine wave at -15 dBFS on the peak meter, it should read -15 dBFS on the VU meter as well...

Add three dB to the Wavelab VU reading to meet the standard.

(Stand by for a plethora of inquiries from readers discussing square roots and rms to peak ratios.) The answer in short: It's a REFERENCE, it's a decibel reference.... The reference is that BY DEFINITION, with a sine wave, 0 dB should read the same on all types of detectors, RMS, averaging, quasi peak, and peak. That's where they're all supposed to be calibrated.

BK
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Oldfart

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Re: average levels
« Reply #16 on: July 26, 2004, 07:05:21 PM »

To Mr Katz:

By WL tools I meant utilizing Global analysis functions. That is how I come up with my  RMS levels., not by the VU meter.

Oldfart
PS thanks for the info WL's VU tho, as I wasn't aware.
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Denis Paquette
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