Speech Intelligibility Testing
Fire safety should never be taken for granted, no matter what kind of business you run or how big your location (or multiple locations) are. Having an effective, accurate fire safety system is vital, and you need a reliable way to make sure that it works. You also need to know that your system’s voice is clear and easily understood, making sure that all your staff at your location are able to hear and understand it when time and safety is a factor. SDi Fire offers a speech intelligibility testing solution for this very purpose – to test just how clear and easy-to-understand your emergency voice system is.
Speech Intelligibility Testing
Fire safety should never be taken for granted, no matter what kind of business you run or how big your location (or multiple locations) are. Having an effective, accurate fire safety system is vital, and you need a reliable way to make sure that it works. You also need to know that your system’s voice is clear and easily understood, making sure that all your staff at your location are able to hear and understand it when time and safety is a factor. SDi Fire offers a speech intelligibility testing solution for this very purpose – to test just how clear and easy-to-understand your emergency voice system is.
Bedrock AM100
The Bedrock AM100 is our most advanced class 1 / type 1 acoustic measuring instrument. It includes all the functionality of the Bedrock SM90 and more, but has higher specs all around (such as more storage, a better display and integrated wireless connectivity).
- High resolution capacitive touch TFT display
- 32 GB of storage
- Wireless control via Bluetooth and WiFi
- Integrated signal generator (noise, STI signals, sines, sweeps)
- Headset jack (for monitoring and recording voice notes)
- Integrated long-life battery pack, rechargeable via USB
- Complies with IEC 60268-16 rev. 4, IEC 61672 Class 1, ANSI S1.4 Type 1, IEC-62160 class 0 (RTA), ISO-3382
- All necessary accessories (such as microphone, charger, cables, windscreen and a ruggedized waterproof carrying case) are included
Bedrock SM50
The Bedrock SM50 is a universal, easy to use speech intelligibility tester for your fire safety system. The SM50 is designed primarily for ease-of-use, with a simple, user-friendly touch screen for precise and basic control. The unit is also equipped with a USB port to provide fast and versatile connectivity to your network. Additionally, the unit includes a custom hard case for its own protection, making sure it is kept safe and in working condition.
- Easy to use touch screen
- USB port
- Includes custom hard case
- Also includes features such as RTA, FFT, Reverberation Time, Noise Curves, and much more
- Capable of taking both STIPA and full STI measurements
- Unit conforms to the IEC651 Type 2, ANSI S1.4 Type 2
- Type 2 / class 2 Sound Level Meter (fast, slow, A/C, Z-weighting)
- Complies with NFPA 72 – 2013, ANNEX D
BTB65 Talkbox
Along with the SM50, we also offer the BTB65 Talkbox. The Talkbox is a calibrated acoustic signal source for taking STIPA measurements and more. It can play test signals through its built-in loudspeaker, or you can use the line-out feature to play the test signals through other devices.
- Easy to use touch screen
- Loudspeaker frequency range 20 – 15,000 Hz
- Plays back signal at a standardized (calibrated) signal level of 54-72 dB(A) at 1m
- Signal level can be increased/decreased relative to environment
- Powered through external power supply (included)
- Includes custom hard case
- Can be purchased with the SM50 as a bundle or as a standalone unit.
BTB115 Advanced Talkbox
The Bedrock BTB115 is an advanced acoustic signal generator that supports a variety of test signals, including STIPA and full STI. Designed to match a human talker in terms of directivity pattern and other characteristics, the BTB115 Advanced Talkbox removes the hassle out of creating a calibrated test setup.
- 3 Capacitive touch displays to control the device from either the front or back
- Effective frequency range 80-16,000 Hz
- Playback of STIPA and full STI signals according to IEX-61268 rev.5 (2020)
- Playback of noise signals (pink/white) for quick evaluation of frequency transfer functions.
- Playback of sine waves and sweeps.
- Spoken messages for announcing the beginning and end of test sessions
- Playback of user-uploaded signals, calibrated on-the-fly through the powerful internal DSP.
- Integrated class 2 laser pointer and laser distance meter (range 0.03-1.50m). SPL at
the test position is calculated from the distance. - Wireless control via WiFi or Bluetooth
- Acoustic output level at 1 meter distance (vocal efffort) adjustable in 1 dB steps between 54 and 72 dB
- Noise, STIPA and Full STI signals conform to target spectra within 1 dB (measured at 1/3 octave resolution).
- Line output adjustable in 1 dB steps between -30 and -12 dBU
