X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fmetering-in-ardour.html;h=51dcdded078c3426f31bcb21acf03e28f2778d5d;hb=3a25ba627d7cf914f1ef46e5b6040b1801c70bf1;hp=8dbe8c25e9fb7a17533252ed01083fe12f97a746;hpb=7a4c28bd8605e90876ebee619de364ab7001e405;p=ardour-manual diff --git a/include/metering-in-ardour.html b/include/metering-in-ardour.html index 8dbe8c2..51dcdde 100644 --- a/include/metering-in-ardour.html +++ b/include/metering-in-ardour.html @@ -8,7 +8,7 @@ at a single meter.

- Yet, if you want to work in or with the broadcast industry, it is + Yet, in order to work in or with the broadcast industry, it is usually unavoidable to use meters.

@@ -19,7 +19,7 @@

  • When tracking, meters are used to ensure that the input signal does not overload and maintains reasonable headroom.
    • -
  • Meters offer a quick visual indication of a +
  • Meters offer a quick visual indication of an activity when working with a large number of tracks.
  • During mixing, meters provide an rough estimate of the loudness of each track.
    • @@ -38,7 +38,7 @@ @@ -46,9 +46,9 @@ There are different metering standards, most of which are available in Ardour. In short:

    -
    -
    Digital peak-meter
    -
    A Digital Peak Meter displays the absolute maximum signal + + + -
    RMS meters
    -
    An RMS-type meter +
    + -
    IEC PPMs
    -
    IEC-type +
    + -
    VU meters
    -
    VU meters are the dinosaurs (1939) +
    + +
    Digital peak-meterA Digital Peak Meter displays the absolute maximum signal of the raw audio PCM signal (for a given time). It is commonly used when tracking to make sure the recorded audio never clips. To that end, DPMs are always calibrated to 0 Edit > Preferences > GUI. + chosen in Edit > Preferences > Metering.

    - +
    RMS metersAn RMS-type meter is an averaging meter that looks at the energy in the signal. It provides a general indication of loudness as perceived by humans. Ardour - features three RMS meters, all of which offer additonal peak indication. + features three RMS meters, all of which offer additional peak indication.
    • K20: A meter according to the K-system introduced by Bob Katz, scale aligned to -20 dBFS, rise/fall times and color schema @@ -75,12 +75,12 @@
    • K14: Same as K20 with scale aligned to -14 dBFS.
    • K12: Same as K20 with scale aligned to -12 dBFS (since 3.5.143).
    • Peak + RMS: standard RMS, customizable via - Edit > Preferences > GUI > Metering
      • + Edit > Preferences > Metering
    - +
    IEC PPMsIEC-type PPMs are a mix between DPMs and RMS meters, created mainly for the purpose of interoperability. Many national and institutional varieties exist (

    - Their specification is very exact, and consquently, there are no + Their specification is very exact, and consequently, there are no customizable parameters.

    - +
    VU metersVU meters are the dinosaurs (1939) amongst the meters. They react very slowly, averaging out peaks. Their specification is very strict (300ms rise-time, 1–1.5% overshoot, flat frequency response). Ardour's VU meter adheres to that spec, but for visual consistency it is displayed as a bar-graph rather than needle-style (more below). - - +

    Ardour Specifics

    -mixer strip meter context menu +
    + mixer strip meter context menu +
    + Mixer strip meter context menu +
    +
    +

    - Meters are available in various places in ardour: + Meters are available in various places in Ardour: