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IK Mulimedia T-Racks 5 VU Metering is off... maybe?

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Not sure if Peter can answer or find the answer to this.  So I'm fully on board with IK and T-Racks, love it.  One issue that I've found is the VU meters in T-Racks Metering plugin, they are off by -4dB.  I've generated a 1k sine wave at -18dBFS.  I calibrate the VU meter in T-Racks Metering plugin to be -18dBFS and the read out should be 0dB on the VU.  Instead I get -4dB on the VU.  I verified this with the TB ProAudio MVM2 and PSP TripleMeter, both show the correct readout of 0dB VU.  I also tested this in the plugin version and stand alone T-Racks application.

Thanks.

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Also I think some of the confusion stems from the fact that there are currently two standards being used to map 0dBu on DBFS, EBU R68 and SMPTE RP155.  I've attached an image that better describes this.

dBu Mapping.jpg

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