Sound Analyzer, SM50, STIPA, FFT, 1/3 + 1/1 octaves, Reverberation, Class 2 meter.

The SM50 was designed from the ground up by the inventors of STIPA and is a fully compliant Speech Transmission Index measuring device as specified in IEC-60268-16 4th ed. (2011). It offers two STIPA measuring modes: a quick screening mode, optimized for ease of use and for quick use, and a "Pro" mode that offers the most complete and versatile functionality of any Speech Transmission Index measurement to date.

In addition, the SM50 is also a fully compliant class 2 sound level meter and a real-time analyzer. All functions featured on the Bedrock SM30 instrument are also included on the Bedrock SM50, perhaps making this the only acoustic measuring instrument you'll ever need.

Functionality

• STIPA measuring (quick screening mode, pro mode)
• Full STI using the direct method (65-second measurement). 
• Speech Level Measurements of IEC-60268 Annex J. 
• Class 2 / Type 2 sound level meter (fast, slow, A/C.Z-weighting, Leq) conforming to IEC-61672 class 1, ANSI S1.4 Type 1.
• Real Time Analyzer (1/3 and 1/1 octave)
• FFT analyzer (detailed frequency analysis up to 32768 lines)
• RT60 measuring (reverberation times: T20/T30/EDT).
• Noise Curves (NR, NC, PNC, NCB, RC, RC mark II) With firmware 2.0 
• Calibrated audio recording
• LAeq long-term logging and monitoring
• Audio oscilloscope 
• AC Volt meter for audio line level measurements (dBU, dBV, V rms) With firmware 2.0 
• USB audio device mode - calibrated audio for your PC-based software applications 
• More functionality will be added through free future firmware upgrades.

Specifications

• 20 - 20.000 Hz frequency range
• Dynamic range 24-124 dB (with included BAMT2 microphone)
• Full-color resistive LCD touch screen (240x230 px)
• 4 GB of storage (of which at least 95% available for user data)
• Access to stored data and recorded audio through high-speed USB2.0 interface
• Integrated long-life battery pack, rechargeable via USB
• Complies with IEC 60268-16 rev. 4, IEC 61672 Class 2, ANSI S1.4 Type 2, IEC-62160 class 0 (RTA), ISO-3382
• All necessary accessories (such as microphone, charger, cables, windscreen and carrying case) are included in a ruggedized waterproof carrying case.

Download SM90 datasheet.