• Extron 4K/60 HDMI audio De-Embedder now shipping

    Extron has announced the availability of the HAE 100 4K Plus audio de-embedder. The HAE 100 4K Plus extracts audio from a 4K HDMI source, and provides outputs for stereo and dual mono analog audio signals, as well as digital audio multi-channel or two-channel formats. It is HDCP compliant to ensure display of content-protected media and support data rates up to 18 Gbps, HDR, up to 12-bit Deep Color, 3D, and HD lossless audio. The HAE 100 4K Plus is equipped with integrator-friendly features such as EDID Minder®, HDMI input cable equalization, comprehensive LED status display, and a compact enclosure.

    “HDMI audio embedders and de-embedders are often critical tools in AV system designs”, says Casey Hall, Vice President of Sales and Marketing at Extron. “Offering 18 Gbps performance, the HAE 100 4K Plus offers the integrator friendly features and performance to meet today’s AV system requirements.”
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    Basic electricity formulas

    Although it not specific to sound, we include this document with some basic electricity formulas. They can be found in any electricity textbook, but we have added them to the DoPA Library for reference.

    Ohm's law

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    V
    I = ———
    Z


    where I is the current (intensity) in amps and V is the voltage in volts. Since we use alternating current in audio, we have replaced resistance with impedance (Z, and this could also be resistance R), measured in ohms. Clearing Z and V we have these other two formulas:

    V
    Z = ———
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    Y-cables, looping audio signals through

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    To obtain one or more copies of a signal (for example, to distribute the signal from a mixer to various self-powered speakers or power amplifiers) we use parallel connections. To do this we simply connect each terminal (pin) of the connectors in parallel. That is, 1 to 1, 2 to 2 and 3 to 3 (or tip to tip, ring to ring and sleeve to sleeve in a TRS connector). When we split a signal in two in this way, we refer to a "Y-cable" or "Y" connection, since the division of a signal in two looks like letter "y". Contrary to what it may seem, a y-cable is not a technically incorrect solution, but a correct way of splitting the audio signal. In fact, when a self-powered loudspeaker system or one channel of... Read more
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