1. Register NOW and become part of this fantastic knowledge base forum! This message will go away once you have registered.

Sequoia 12

Discussion in 'Sequoia' started by audiokid, Mar 12, 2012.

  1. audiokid

    audiokid Chris Staff Resource Member

    Mar 20, 2000
    Prince George, BC
    Home Page:
    Sequoia 12 is out. North America should be here next month, YA! Here is the official release just posted:


    Check this out:

    Loudness Metering according to the EBU recommendation R 128 is an important part of the latest version which supports the transition from peak-based measurements to loudness-based measurements for radio and television. The meter’s display has also been redesigned and offers various visualization layouts and presets for common broadcast standards.

    Loudness Metering (EBU R 128 and ITU-R BS.1771)

    The most important addition to metering in Sequoia 12 is loudness metering, which has become one of the most important topics in the radio world in recent years, and is rapidly taking over from known peak-based metering methods.
    Up until now peak control using peak levels (-9 dBGS as a rule) has been the standard in radio production. Peak limiters were often used as they limit an audio signal's dynamics, thus negatively affecting sound quality.

    In combination with the introduction of open standards for peak control there are reliable ways for engineers and producers to describe subjective loudness in countable terms.

    Sequoia 12 allows for the switch of EBU R 128 and ITU-R BS.1771 loudness measuring on the fly.
    ITU Recommendation BS.1770 forms the basis of international loudness measurement standards.
    True Peak Metering

    In addition to the method for loudness metering ITU-R BS.1770 provides a recommendation for measuring peak levels of digital audio signals. The device measures the peak value of the digital signal when it is reproduced in the analog domain. Samples of the signal are taken at regular intervals determined by the sample rate. As illustrated in figure 4, it can not be assured that samples exactly match audio peaks. Theses peaks will be restored once the waveform is reconstructed or when signals are processed. Due to the reduced precision of the Sample Peak Meter these new samples may clip or distort, even if the original samples had not been full scale. The common peak meter cannot display “true” peak values.
    Sequoia introduces True Peak Metering in Version 12 along with the loudness metering functions. For this reason, the identification of these inter-sample peaks are displayed with 4-times oversampling of the signal and thereby enabling the detection of true peaks.

    Loudness Range [LU]

    • Statistic parameter
    • Distribution of loudness values in a program
    • Description of the dynamic range of the program
    • No specific value given by EBU
    • EBU document [Tech3344]
    A relative level of 0,0 LU equals a target level of –23,0 LUFS if using EBU mode. Sequoia offers a switchable scale for EBU+9 scale and EBU+18 scale.

    Programme Loudness [LUFS]

    • Long-term measurement over the entire length of the programme
    • Specific target level for European TV programs: - 23.0 LUFS
    The integrated measurement provides information about the loudness of the entire programme and describes a long-term measurement with the parameters start, pause, and reset.

    Maximum True Peak Level

    • Describes the technical top level of the signal in time-domain
    • Set at -1 dBTP (Decibel True Peak)
    • Lower levels might be required for further analog transmission and lossy coding
    Sequoia allows for the switch of EBU128 and ITU-R BS.1771 loudness measuring on the fly.
  2. audiokid

    audiokid Chris Staff Resource Member

    Mar 20, 2000
    Prince George, BC
    Home Page:
    YA! Sequoia 12 arrived today, its installed and I am ready! Plus I have Independence Pro with this which I'm soooooooooooooo excited about!
    Its been loading for an hour and a half already and its close to finished. What a beast DAW, 70 gig library that is part of Sequoia 12.
    I've been waiting years for a system like this and I finally have it. Sequoia is incredible and 12 is the birth of a whole new era. 64 bit makes a new beginning. I'll keep you posted.

    Cheers Tim and your team at Magix!
  3. hueseph

    hueseph Distinguished Member

    Oct 31, 2005
    Vancouver, BC, Canada
    Cool. Congrats. Can't wait to hear something from you soon. (y)

Share This Page