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 How
to Buy the Best Interpretation Equipment for Your
Needs
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| When buying simultaneous interpretation equipment, there are a few basic rules to keep in mind: |
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| Interpreters booths: |
| It is always best to buy only what you need now, in modular systems that can be added to later, when your needs increase. There are two main types of simultaneous interpretation equipment, radio frequency and infrared. Radio frequency is also divided into wideband and narrowband. Here are the main features of each: |
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| Radio Frequency Systems |
Wideband
- Lowest cost
- Easy to install
- Good rejection of radio interference
- Immune to light interference
- Wider frequency response
- For good sound quality
- Receivers are field tunable
- Wide coverage
Narrowband
- Easy to install
- Highest rejection of radio interference
- Immune to light interference
- Good fidelity for voice application
- Narrower frequency response
- Wide coverage
Infrared Systems
- Difficult to install
- Transmission confined within opaque walls
- Immune to radio interference
- Sensitive to light interference
- Limited coverage
Below is a side-by-side comparison of features and functionality for our most popular RF and IR systems: |
| Feature |
Listen Radiofrequency |
Williams Sound Radiofrequency |
Williams Sound Infrared |
Listen Integrus Infrared |
| Frequency Response +/- 3 db |
50 Hz-15 KHz |
22 Hz-16 KHz |
30 Hz-16 KHz |
20 Hz-20 kHz |
| Frequency Bands |
72 MHz 216 MHz |
72 MHz |
2.3-3.8 MHz |
2-8 MHz |
| Signal to Noise Ratio |
80 dB |
74 dB |
> 60 dB |
gt; 80 dB |
| Number of channels |
56 |
6 |
4 |
32 |
| Nominal range |
72 MHz: 1,500 ft. (457 m) 216 MHz: 3,000 ft. (914 m) |
72 MHz: 1000 ft. (304 m) |
18,000 ft 2 (1,700 m2) per emitter (2-channel mode) 28,000 ft2 (2,600 m2) per emitter (1-channel mode) |
1000 m2 per medium-power emitter (4-channel mode) 2000 m2 per high-power emitter (4-channel mode) |
| Transmits through walls? |
yes |
yes |
no |
no |
| Works well outdoors? |
yes |
yes |
no |
no |
| Performance affected by light fixtures, camera flashes, shadowed areas or sunlight? |
no |
no |
yes |
yes |
| Susceptible to RF interference? |
yes |
yes |
no |
no |
| Transmission security? |
no |
no |
yes |
yes |
| Stereo Transmitters / Receivers? |
no |
no |
yes |
yes |
| Multiple channels simultaneously? |
yes |
yes |
yes |
yes |
| Portable systems? |
yes |
yes |
no |
yes |
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| Wireless transmitters: |
Wireless transmitters are commonly used for escort interpretation and trade show applications, as well as tour guide systems.
For more information, please click here for our transmitter selection chart. |
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| Wireless receivers: |
| Radio frequency receivers are available in 1, 3, 6, 8, 16, and 32 channels . Infrared receivers are available in 1, 2, 4, 6, 16, and 32 channels. Click here for our radiofrequency receiver selection chart, to help you determine which type is best for your needs. |
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| Interpreter control centers: |
| Make sure that any interpreter control centers you buy are fully ISO 4043 compliant and have a built-in amplifier that provides the interpreters with individual volume controls, as well as microphone mute button, microphone switching, transmitter selection buttons, and relay capabilities. |
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| Interpreter headphones and microphones: |
| There are many types of professional microphones for simultaneous interpretation, including unidirectional, omnidirectional, lapel, hand-held and headset microphones, depending on the venue and application. Please click here for our simultaneous interpreter headphones and microphones selection chart. |
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| Audience headphones and earphones: |
There are many types of headphones and microphones, depending on the venue, application, type of audience, etc. Make sure that you have the right equipment for your needs. Please click here for our headphones and earphones selection chart.
For our full range of simultaneous interpretation products, please click on Equipment call us, or e-mail us at sales@barinas.com. |
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