The Speech Transmission Index meter from the inventors of STIPA
Measuring the Speech Transmission Index has never been easier - or more affordable.
The Bedrock SM50 is a full-featured acoustic measuring instrument, designed from the
ground up by the development team at Embedded Acoustics - the team that invented
STIPA. You will easily navigate through its functions thanks to the full-colour touch
screen, and retrieve your stored measurement data through USB. The device is fully
compliant to all the newest standards, and has several unique features to ensure that
you get the most accurate and reliable results of any STI measuring device.
Why choose the SM50?
Doing an STI measurement will literally be as simple as pressing a button. If you will be doing Speech Transmission Index measurements only infrequently, perhaps once in a while, you will appreciate the instrument's ease-of-use and intuitive user interface - no need to memorize complex menu structures. But even the most demanding STI user will still find every option he or she ever needed on the device. The "STIPA pro" mode gives instant access to all measurement details, including the MTF values. A unique feature of the Bedrock SM50 (and SM90) is the availability of a Full STI measurement.
The SM50 has more to offer than just STI measurements. Such as the integrated Sound Pressure Level meter with all the usual settings (including A, C and Z-weighting, fast-slow and Leq) a Real-Time Analyzer (RTA) and reverberation time measurements (RT60). Different measurement modes are accessed through an easy-to-use menu.
The SM50 STIPA meter is built from top-notch digital and analog components. Its multi-range pre-amplifier offers an impressive combined measuring range of more than 110 dB. The SM50 comes standard with a Type 2/Class 2 measuring microphone, but will work with any measuring microphone that operates on 48V phantom power. Working with line-level input signals from an external source is also easy.
Product features
- STIPA and Full STI
- Speech Level Meter (cf. 602168-16)
- SPL meter
- Real-Time Analyzer (RTA) with 1/1, 1/3, 1/6 and 1/12 octave resolution
- Reverberation time (RT60)
- Statistical acoustics
- LEQ logging
- RTA logging / spectrograms
- Environment/safety logging and monitoring
- Noise Curves (NR/NC)
- Building acoustics, airborne and impact noise: SRI/STC, Dn’T/R’, L’nT, L’nw/L’nTw
- FFT analysis
- Oscilloscope
- AC Volt meter
- Loudspeaker polarity
- Calibrated audio recording
More functionality to be added through free firmware updates
- Full-color 3.2” LCD touch screen
- 8 GB of internal storage, at least 6.8 GB available for storing measurement data
- Downloading of measurement data and firmware updating through USB
- Easy calibration procedure
- Comes standard with Type 2 / Class 2 measuring microphone; works with any 48 V XLR measuring microphone.
- Approx. 4-6 hours of use on a single charge, depending on intensity of use.
- Recharging through USB wall charger (charger with international adapters included)
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