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Solutions for Hotels: |
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It does not need to be proven that conference center rooms get noisy. As a matter of fact, busy dinner conference noise levels can exceed 80dB. Achieving sufficient intelligibility above the din requires peak levels of 15-20dB higher, plus additional headroom of 4-6 dB.
 The standard means for quantifying (identifying) sound levels (Sound Pressure Levels or SPL) is with the measurement unit - the decibel, or dB. Without getting too technical, let's assume that the SPL needed by the room shown below amounts to 94dB.
Below, we show two average size function rooms that are identical in use and acoustical properties.
- In the left column, we have acoustically modeled the typical speaker choice and installation pattern used in most hotel Ballrooms, Exhibit Halls, Prefunction Areas, etc.
- In the right column, we show the results of how AV/COM, using computer modeling to identify the speaker needed and proper placement to provide a system capable of smooth and adequate level to accommodate clients with the most discerning requirements of fidelity.
The bar graph on the side of each model shows the SPL range that can be expected from each system in the same room. Note that where the Typical System reaches its maximum level (top of bar), that is nearly the bottom of the range of the AV/COM installed system, demonstrating our superior product and installation procedures.
Total SPL of this Typical installation, is between 85-88dB. Our model on the right shows the Total SPL average of 98-101dB. While it would seem that the Typical System could just be 'turned up louder,' mathematically this would require an additional 250 watts per speaker to achieve the same levels of the AV/COM System! Because of the low power rating of the typical speakers used in meeting rooms and saturation of impedance matching 70v transformers, it is not possible, we would only increase distortion.
While AV/COM System provides plenty of power and headroom for comfortable volume levels to every seat in the room, the Typical System cannot begin to meet the need. The AV/COM System can be turned down to a whisper of grace and intelligibility, the Typical System gets lost in background noise. And when the volume of the Typical System is maxed, the room goes into distortion, or worse yet, feedback, and the guests go into pain. Simply adding more of an inferior loudspeaker will not correct the problem issues. For proper coverage and the power that is needed, computer modeling coupled with quality speakers, amplifiers, DSP, and installation, is the only way to know the room will sound as required.
| | | Typical System: | AV/COM System: | | | The graphs below show the highest concentration of SPL from five key frequencies within the voice range. | | |
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