---
<h2>Introduction</h2>
+
<p>
An engineer reading and using audio level meters compares to a musician
reading or writing sheet-music. Just like there are virtuoso musicians
go by their ears and produce great mixes and masters without ever looking
at a single meter.
</p>
+
<p>
Yet, if you want to work in or with the broadcast industry, it is
usually unavoidable to use meters.
</p>
+
<p>
Audio level meters are very powerful tools that are useful in every
part of the entire production chain:
</p>
+
<ul>
<li>When tracking, meters are used to ensure that the input
signal does not <dfn>overload</dfn> and maintains reasonable
</ul>
<h2>Meter Types</h2>
+
<p>
A general treatise on metering is beyond the scope of this
manual. It is a complex subject with a history...
For background information and further reading we recommend:
</p>
+
<ul>
<li><a href="http://www.digido.com/how-to-make-better-recordings-part-2.html">How To Make Better Recordings in the 21st Century - An Integrated Approach to Metering, Monitoring, and Leveling Practices</a> by Bob Katz. Has a good historic overview of meters and motivates the K-meter</li>
<li><a href="https://en.wikipedia.org/wiki/Peak_programme_meter#Table_of_characteristics">Wikipedia: Peak programme meter</a> - overview of meter types.</li>
<h2>Ardour Specifics</h2>
-<img class="right" src="/ardour/manual/html/screenshots/mixer-meter-context-menu.png" alt="mixer strip meter context menu" />
+<img class="right" src="/images/mixer-meter-context-menu.png" alt="mixer strip meter context menu" />
+
<p>
Meters are available in various places in ardour:
</p>
+
<ul>
<li>The mixer window features fixed height meters for each <dfn>channel strip</dfn>.</li>
<li>There are small (narrow) meters on each <dfn>track-header</dfn> in the editor window.</li>
<li>Optionally, a fixed-size <dfn>master meter</dfn> can be displayed in the main toolbar.</li>
<li>Various other locations (<dfn>file import</dfn>, <dfn>sends</dfn>) have level-meters.</li>
</ul>
+
<p>
They all share the same configuration and color-theme which is available in
preferences and the theme-manager. Settings for the Peak and RMS+Peak meters
as well as VU meter standards are found in
<kbd class="menu">Edit > Preferences > GUI > Metering</kbd>.
</p>
+
<p>
The type of meter and the <dfn>metering point</dfn> (the place in the signal chain
where the meter taps the signal) are configurable in the context menu of each meter.
Strip</kbd> settings, the metering point is also accessible via a button in
each Mixer strip.
</p>
-<img class="right" src="/ardour/manual/html/screenshots/meter-preferences.png" alt="" />
+
+<img class="right" src="/images/meter-preferences.png" alt="" />
+
<p>
Regardless of meter type and standard the meter display will highlight red if
the signal on the given channel exceeds the configured peak threshold.
</p>
+
<p>
<kbd class="mouse">Left</kbd> on the peak-indicator button resets the
<dfn>peak-hold indicator</dfn> of a single channel.<br />
<h2>Overview of meter types</h2>
<p>
- The figure on the left shows all available meter-types in Ardour 3.4 when fed with a
- -18 dBFS 1 kHz sine wave.
+ The figure on the left below shows all available meter-types in Ardour 3.4 when fed with a -18 dBFS 1 kHz sine wave.
</p>
-<img class="right" style="max-width:45%;height:400px;" src="/ardour/manual/html/screenshots/needle-meters-18.png"
+<img class="right" style="max-width:45%;height:400px;" src="/images/needle-meters-18.png"
alt="Needle-style meters as external LV2 plugins" />
-<img style="max-width:45%; height:400px" src="/ardour/manual/html/screenshots/meter-types-18.png"
+<img style="max-width:45%; height:400px" src="/images/meter-types-18.png"
alt="Bar-graph meters in Ardour" />
+<br /><br />
<p>
- Due to layout concerns and consistent look&feel all meters available in
- Ardour itself are bar-graph type meters. Corresponding needle-style meters
- — which take up more visual screen space — are available as
- LV2 plugins (see image on the right):
- <a href="https://github.com/x42/meters.lv2/">meters.lv2</a>.
+ Due to layout concerns and consistent look & feel, all meters available in
+ Ardour itself are bar-graph type meters. Corresponding needle-style meters—which take up more visual screen space—are available as
+ <a href="https://github.com/x42/meters.lv2/">LV2 plugins</a> (see image on the upper right).
</p>
+