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GMU:Tutorials/Performance Platform/Sound System Multi Speaker (view source)
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== Types of Multi Channel Audio == | |||
There are three different types of speakers arrangements: first the most common one the stereophonic sound or two channel audio, surround sound or more than two channels and ambisonics or full sphere surround sound. | There are three different types of speakers arrangements: first the most common one the stereophonic sound or two channel audio, surround sound or more than two channels and ambisonics or full sphere surround sound. | ||
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In this tutorial we only are going to cover briefly the surround sound arrangement. | In this tutorial we only are going to cover briefly the surround sound arrangement. | ||
== Surround Sound == | |||
"Surround sound is a technique for enriching the sound reproduction quality of an audio source with additional audio channels from speakers that surround the listener (surround channels), providing sound from a 360° radius in the horizontal plane (2D) as opposed to "screen channels" (center, [front] left, and [front] right) originating only from the listener's forward arc. | "Surround sound is a technique for enriching the sound reproduction quality of an audio source with additional audio channels from speakers that surround the listener (surround channels), providing sound from a 360° radius in the horizontal plane (2D) as opposed to "screen channels" (center, [front] left, and [front] right) originating only from the listener's forward arc. | ||
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== Using the Multi Channel System == | |||
===Hardware=== | |||
Turn on equipment: | |||
*Audio work station (Enigma) | |||
*Audiointerfaces (RME Fireface UFX and 800) | |||
*Power supply (488 back room, next to the video wall) | |||
*Check if the USB cable connected (Work station to Fireface UFX) | |||
=== From the Speakers to the Sound-card === | === From the Speakers to the Sound-card === | ||
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Channel 1 has speaker emulation to bypass the amplifier of a guitar for example | *Channel 1 has speaker emulation to bypass the amplifier of a guitar for example | ||
*Channels 7 and 8 also have mic and line input connections | |||
Channels 7 and 8 also have mic and line input connections | *Channels 9 and 10 are used for headphones (if you want to) - Phones are low impedance line outputs. They provide a sufficient and undis-torted volume when used with headphones. | ||
Channels 9 and 10 are used for headphones (if you want to) - Phones are low impedance line outputs. They provide a sufficient and undis-torted volume when used with headphones. | |||
For a better understanding of Phantom power click [https://en.wikipedia.org/wiki/Phantom_power here]. | For a better understanding of Phantom power click [https://en.wikipedia.org/wiki/Phantom_power here]. | ||
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=== Status LEDs === | === Status LEDs === | ||
*MIDI/I: indicates MIDI data received by the MIDI input. | |||
*MIDI/O: indicates MIDI data sent to the MIDI output. | |||
*The Digital State LEDs: (WC, SPDIF, ADAT, TCO) indicate a valid input signal separately for each digital input. | |||
*The red HOST LED lights up when the Fireface 800 has been switched on, signalling the presence of operating voltage. At the same time it operates as error LED, in case the FireWire connection hasn't been initialized yet, or has been interrupted (error, cable not connected). | |||
The red | |||
[[File:sound card interface.png |thumb| left| 400px | sound card front LEDs]] | [[File:sound card interface.png |thumb| left| 400px | sound card front LEDs]] | ||
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===Software=== | ===Software=== | ||
====TotalMix FX==== | ====TotalMix FX==== | ||