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    Published on 03 Mar 2019 05:18 AM
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    The different types of directional patterns in microphones are a common source of inaccurate graphical representations as well as numerical data that are not entirely correct or complete. In this reference we include a table of complete parameters as well as polar curves. ...
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    The spectra of pink and white noise are often a source of confusion. The difficulty arises from the fact that the spectra of these types of noise (or rather, their graphical representation) will change depending on the type of analyzer that ...
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    There are many types of sound sources that do not require subwoofer reinforcement since they lack low frequency content. For instance, most signals captured by microphones such as voices and instruments in general, except those that do have low frequency content, like double ...
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    For cost and space saving reasons, some devices often use connectors that integrate both an input and an output, typically on a female 1/4" connector. This type of arrangement ...
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    The illustrations below show the connection between balanced and un-balanced outputs on different connector types (XLR / Cannon, 14", phono/RCA/cinch) to balanced inputs on XLR and 1/4" connectors. ...
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    How much high frequency is lost over long distances? ...
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    In the loudness contours reference, we learned that the frequency response of the human ear is not flat and it also varies ...
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    The equal loudness contours (often referred to as Fletcher & Munson contours for reason explained below) represent the level that different frequencies need to have in order to be perceived by a listener ...
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    The following table shows the resulting damping factor, signal loss, attenuation and impedance for different cable lengths ...
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    Maximum speaker cable lengths for :


    • Low impedance (2, 4, 8 and 16 ohm)
      • Quality
      • 3 dB loss, which could be an alternative to a line transformer system

    • High impedance (systems with line transformer)
      • 70V
      • 100V

    ...

    Tables for conversion from Q to B/W (bandwidth) for DSP bell-type EQ. ...