SAM LiveWire provides an affordable, one-channel environmental noise recorder/analyser, supplied with:

1 BSWA XLR microphone,
1 Focusrite Scarlett 2i2, (20-20,000 Hz),
microphone frequency-response calibration to ±0.2 dB,
Fit PC3 running Windows 7
SAM Probe and SAM Report software,
and with the following options:

    Upgrade to twin BSWA microphone
    Upgrade to GRAS XLR microphone
    GPS
    NATA certification

Whichever microphone(s) you choose will be individually calibrated flat across the entire 50-16,000 Hz range to within ±0.2 dB (using the SAM Probe frequency response table) in 1/3 octaves.

The SAM LiveWire is housed in an SKB case, one of the most robust cases available in polypropylene. Built to handle all the knocks and bangs you can expect in the field.

All SAM software includes Data Integrity Validation (DIV) technology. DIV digitally signs all data files using the security HASP. This guarantees that, at a later date, the files have not been altered.

Automatic transmission of files is possible to a remote server every 10 minutes. All files will be digitally signed and can then be sent via secure FTP (broadband Internet access is required).

SAM Probe Features

1-, 1/3- or 1/6-octave filters
Post-sampling choice of Linear, Exponential Fast, Exponential Slow or Impulse time-averaging
Post-sampling choice of frequency weighting; Z, A, C, G or L (loudness weighting based on ISO 226)
FTP transmission of files to a remote server
1–20,000 Hz frequency range selectable in 1/3 octave steps,
Calibrated frequency-response curve
Display of under-range, over-range and clipping error conditions
Real-Time Monitoring mode
One-Button Logging mode
Advanced Logging mode

Real-Time Monitor Mode

No data is stored
Z-, A- or C-weighting
1/2-second display updates
Pause and resume

One-Button Logging Mode

Major parameters are pre-selected
5-, 10-, 15-, 30- or 60-minute duration
Simplified logging interface
Continuous low-frequency logging
Select sound bite length, hold-off time and trigger level
Sound bites recorded at 44.1 kHz, 16 bit
GPS position
Transmit files to remote server
SPL, SPL spectrum, SPL/time display
Sound bite, FTP & GPS activity indicators
Generate report from template (choose template or pre-selected)
Generate abatement notice from template (adheres to NZ legislation, choose template or pre-selected)
All files are available for post-sample analysis

Advanced Logging Mode

Create, and store, custom setups
Manual/automatic start time
Fully-selectable interval
Daily repeat
Transmit files to remote server
Select sound bite length, hold-off time and trigger level
Sound bites recorded at 44.1 kHz, 16 bit
GPS position
Continuous low-frequency logging
SPL, SPL spectrum, SPL/time display
Sound bite, FTP & GPS activity indicators
All files are available for post-sample analysis

SAM Report Features

Display

Recording overview
User-selectable frequency weighting; Z, A, C, G and L (loudness weighting based on ISO 226).
User-selectable time weighting; linear, exponential fast, exponential slow
SPL vs Time graph with adjustable data cursors and time of sound bites
All Data/Cursors switch to specify the time range to use in all subsequent calculations
Display of start time/date, stop time/date and interval length
Display of sound-bite file under sound-bite cursor
Playback of selected sound-bite file
Frequency spectrum graph
Rolling 10-minute exceedance plots for L5, L10, L50, L90, L95 and one level user-selectable*
User can select which exceedances are plotted or withheld
Statistics including; all exceedances (including user-selectable exceedance), Lmin, Lmax, Leq
Number-greater-than (e.g. N70) histograms in 5 dB steps
* These are for the selected frequency weighting, e.g. LA5, LZmin etc.

Report Contents

Report overview information
SPL vs Time graph (user-selectable frequency weighting)
Display of start time/date, stop time/date and interval length
Frequency spectrum graph (user-selectable frequency weighting)
Frequency spectrum graph, Z-weighted
Rolling 10-minute exceedance plots for L5, L10, L50, L90, L95 and one level user-selectable*
User can select which exceedances are plotted or withheld
Statistics including; all exceedances (including user-selectable exceedance), Lmin, Lmax, Leq*
Number-greater-than histograms in 5 dB steps
* These are for the selected frequency weighting, e.g. LA5, LZmin etc.

Technical Specifications

BSWA SM4201 microphone - balanced, XLR connectors
Frequency Range 20 Hz–20 kHz
Sound Pressure Level (dynamic range) 90 dB
Frequency Response (20 Hz–20 kHz) ±0.2 dB
Frequency Weighting Z, A, C and L
Input Impedance 200 ohms
Max SPL for 3% THD 130dB
Equivalent Noise Level 18dBA
Phantom Power 25 V-48 V (3 mA)

Focusrite Scarlett 2i2
96 kHz, 24-bit conversion
Frequency response 20 Hz-20 kHz, +/- 0.1 dB
THD + N < 0.002%
Equivalent Input Noise < -120 dB
Crosstalk > 90 dB

Specification Value
ADC Dynamic Range (A-weighted, 48 kHz Sample Rate) 102 dB
DAC Dynamic Range (A-weighted, 48 kHz Sample Rate) 110 dB
Sample Resolution 16 bit
Internal Sampling Frequency 44.1 kHz

Narrow-band Digital Filters

Specification Value
Filter class Type 0
Filter bandwidth 1, 1/3, 1/6 octave