Thank You
Dear Gary:
I picked up my first issue of Widescreen Review back in the 1990s.
I have been interested in sound since the inception of the DTS Digital Sound system back in 1993.
I want to thank you for all the years of great information.
I applaud your early support of the DTS system, and I love the fact that you often brought it up when you would interview people in the industry.
I have a couple of questions regarding Blu-ray:
1) Is there an SPL standard for Blu-ray lossless tracks?
2) I am aware of the difference of the LFE channel on DTS and Dolby Digital DVDs; is there a difference in LFE output in lossless DTS-HD Master Audio tracks and Dolby TrueHD tracks on Blu-ray?
I learned a lot about DVD and LaserDisc thanks to your magazine, and now I am looking to learn more about Blu-ray.
I can’t express to you how much I value your magazine.
Thank you very much for your time and for working so hard to continue Widescreen Review.
Drake Tafoya, Las Vegas, Nevada
editorgary@widescreenreview.com
Editor-In-Chief and Publisher Gary Reber Comments:
The standard reference playback for motion picture soundtracks is 75 dB referenced to dialogue loudness. We use a basic Radio Shack Sound Level Meter (Cat. No. 333-2050) to calibrate our reference systems. Set the weighting to “C” and the response to “slow.” Hold the meter to your center of your face in a vertical position (sitting in the “sweet spot”) and play pink noise from your processor through each loudspeaker channel calibrating the loudness level to 75 dB on the meter.
There is no difference in the LFE levels, whether output in lossless DTS-HD Master Audio or Dolby TrueHD.
I hope this helps.
You can E-mail Widescreen Review @ editorgary@widescreenreview.com