Tipos de Sistema de Interpretação Simultânea
Infrared Systems
WIR SYS 7518 Mid-Range interpretation system from Williams Sound
Using the same technology as your TV remote control, infrared interpretation systems transmit the translation feed to the audience using invisible pulses of light.
Members of the audience listen to the audio feed in their native language using specialized multi-channel receivers with headphones.
Some key points about Infrared systems:
- Infrared signals require a clear line of sight to the audience
- Emitters must typically be installed above the audience level and cannot be covered with curtains, drapes, etc
- For larger facilities, several infrared emitters can be used in sequence to increase the range
- Infrared systems are immune to radio interference but sensitive to light interference (eg from very bright or flashing lights)
Medium Range Handheld Digital Systems
Ultra-Portable 4-Person Digi-Wave Interpretation System (Williams Sound)
FM interpretation systems use radio waves to send the translation feed to the audience. Members of the audience use multi-channel receivers equipped with headphones so they can listen to the speaker in their native language.
Some key points about these systems:
- The short and medium range systems are light and portable, so you can easily throw the right number of receivers into a suitcase to transport to your next event.
- Transmitters and receivers are sleek and discreet, and won’t interfere with movement – perfect for tour guide or other on-the-go situations
- The multi-channel configuration allows you to easily customize your system to support multiple languages at the same time
- More advanced DigiWave systems from Williams Sound feature interference-cancelling and encryption technology, so that your audio comes through clearly (and privately)
- Their smaller size means that short and medium-range FM systems will have a more limited range (around 250 feet)
- FM signals penetrate walls, and other obstacles so do not require a clear line of sight
- FM systems are immune to light interference so are perfect for both indoor and outdoor use
Longer Range Portable FM Systems
PPA 377 Four-Person System (1000 foot range) – Williams Sound
If you have a larger area to cover, then you’ll need more powerful FM translation equipment. These systems can broadcast the translation feed over distances exceeding 1000 feet. But the added power means that the machines are less portable. They are certainly portable, but just require a bit more in terms of set-up and take-down.
Key considerations:
- The more powerful FM systems are better at canceling out radio interference and offer very high sound quality
- Longer-range FM systems are more component-based meaning they are more flexible and customizable
- Like all FM systems, they are immune from light interference
- Most cost-effective for larger groups
- These systems tend to be portable (you can take them from venue to venue) but not mobile while you are using them (speakers and audience members cannot get too far from the transmitters, which are usually fixed)
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