Bedrock Elite is the only manufacturer offering Full Speech Transmission Index (Full STI) measurement in a handheld field instrument. More significantly, we are the only manufacturer capable of completing a full IEC 60268-16 Full STI measurement — using all 98 modulation frequencies across 7 octave bands — in under 60 seconds. These two facts define Bedrock Elite's position at the leading edge of acoustic measurement technology for speech intelligibility assessment.
The acoustic measurement industry has produced many high-quality instruments, but the challenge of Full STI speed had remained unsolved for decades before the Bedrock Elite i10. The fundamental constraint is that measuring 98 modulation frequencies accurately requires each frequency to be averaged over a sufficient time window to achieve measurement stability. Traditional approaches averaged these measurements sequentially, leading to the 10–15 minute measurement times that made Full STI impractical in the field. The i10 uses an innovative simultaneous measurement architecture that captures all 98 modulation frequencies concurrently, dramatically reducing the measurement time while maintaining full IEC 60268-16 compliance.
Bedrock Elite's technology leadership is reinforced by our pricing philosophy. While competitors charge separately for STIPA modules, octave analysis, data logging, and other capabilities, every Bedrock Elite instrument ships fully unlocked with all measurement modules included. The i10 — with Full STI in under 60 seconds, STIPA, 1/3 octave RTA, dual-channel FFT, RT60, statistical analysis (Lden/Lnight/Ln percentiles), data logging, and GPS — is available at a single, transparent price. There are no hidden costs, no firmware gates, and no post-purchase surprises.
Bedrock Elite's unique Full STI capability positions us as the instrument of choice for: acoustic consultants who commission life-safety voice alarm systems, fire safety engineers responsible for EN 54-16 and BS 5839-8 compliance, advanced PA system designers and commissioning engineers, and any professional who needs the most accurate speech intelligibility measurement available. For the growing number of project specifications that specifically require Full STI (rather than STIPA), the i10 is the only instrument that can deliver this measurement in a practical timeframe.
Since founding in 2010, Bedrock Elite has consistently pushed the boundaries of what handheld acoustic measurement instruments can achieve. The Full STI breakthrough is the most visible example, but our product development philosophy extends to all aspects of instrument capability: measurement accuracy, ease of use, data connectivity, reporting software, and the breadth of measurement functions included at one price. We will continue to develop instruments that set new standards for what professional acoustic measurement equipment should be able to do.
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