An instrument for every budget and application
The Bedrock brand stands for high-quality, high-end measuring equipment for acoustics and professional audio. Our products combine the ease of use of a smartphone with the highest professional and scientific standards of performance and accuracy. Our devices are designed by…More...
Made by the inventors of STIPA
STIPA has become the industry standard for measuring the Speech Transmission Index. The Bedrock SM50 STIPA meter is the device that many have been waiting for: finally a STIPA meter that is accurate, reliable and affordable at the same time!…More...
The ideal acoustic signal source for STIPA testing
Every STIPA measurement, whether it is with our STIPAmeter or any other device, needs a source for the STIPA test signal. The Bedrock BTB65 TalkBox is accurate and reliable, but also compact and light enough to pack for every measuring…More...
Download firmware version 1.6 for the SM50 now
If you have not downloaded it already: firmware version 1.6 for the Bedrock SM50 is now available for download in the support section of this site. Besides fixing a number of minor bugs, the following functionality has been added:
- FFT analyser. Lets you perform spectral a detailed analysis, up to 32768 spectral lines
- RT60. Measure the reverberation time according to ISO 3382-2 (EDT/T20/T30).
This firmware update also greatly improves the accuracy of the battery charge indicator.
The update package can be downloaded here (note that logging in is no longer required). The manual has also been updated significantly. As always, the update is free for all existing and new owners of the Bedrock SM50.
There is more to come - Firmware version 1.8 is expected to be ready for release by late October 2016.
Your feedback and bug reports are (as usual) gratefully received and used towards future updates.
The Bedrock SM50: speech intelligibility meter, and more...
The Bedrock SM50 is the first Speech Transmission Index meter that has been completely developed and designed by the inventors of STIPA. The design is based on a simple philosophy: we wanted to create the best and most accurate STI measuring instrument there is, while making it very easy to use at the same time.
If standard devices don't cut it, simply get a Bedrock device customized!
The Bedrock philosophy is simple: anything we build is designed to be easily customized. Take our digital signal processor, the DSP500 series. Even the standard model comes with plenty of options. But since we've built this around our own signal processing chip, our BSP64, there's nothing you could think of that our team cannot make.
Get the most out of the SMxx instruments with our MS Excel tools
As many of you will know, we offer a a series of tools for importing data from the Bedrock SMxx instruments (SM30/SM50/SM90) into MS Excel. You will need a recent version of MS Excel (2010 or newer).
These import tools read multiple output files from the SM50 (STIPA, SLM and RTA mode) and convert these into a manageable table. You can also use the tools to easily browse through the measurements. The files can be downloaded here (login required).
There are many different combinations of Excel versions, Windows versions and software that interacts with Excel. We've tested the tools on the most common combinations, but we can't rule out that some people might get unexpected results. So please review your data carefully when you first use these files. Unfortunately, for now, the tools usually do not work in Mac OSX (theoretically, as long as you have VB installed, it should work - but in practice this is not always the case).
Your feedback is as always appreciated; all bug reports are (as usual) gratefully received and used in future updates.