Soft dB · Class 2
Piccolo II
Pocket-size Class 2 integrating sound level meter with built-in data logger, octave bands and FFT, for noise surveys and long-term monitoring.
Piccolo II from Soft dB (Canada) is a compact Class 2 integrating-averaging sound level meter with a built-in data logger. It measures all main noise parameters at the same time in A, C and Z weighting, together with octave bands and an FFT spectrum, so one instrument covers both quick checks and long measurement campaigns.
The internal battery is recharged by USB and runs for about two days, or without limit from an external USB supply, which makes the meter suitable for unattended monitoring. Data is stored for up to 2 months at 5-minute averaging and up to 2 years at 1-hour averaging.
The included software is used to set up the meter (averaging time, fast/slow, date and time), view the calibration certificate and IEC 61672-1 test result, and analyse results: time-history graphs or lists, octave and FFT spectra for any record, and export of selected data to text or Excel. The meter can also record audio (WAV) to help identify noise sources.
Key features
- Meets IEC 61672-1 and ANSI S1.4 (Class 2)
- Leq, Lmax, Lmin, Lpeak and SEL in A, C and Z weighting, plus LN%
- 1/1 octave (31.5 Hz–8 kHz) and 400-line FFT, recorded together
- Two measurement ranges: 30–110 dB and 46–130 dB
- Long-term logging: up to 2 years with 1-hour Leq
- USB-rechargeable battery, about 48 hours
- High-quality audio recording
- PC software for setup, analysis and export to Excel
Downloads
Control and analysis software
The included PC software extends the meter: start single or auto-store measurements, change the display and measurement setup (input range, time weighting), set record duration and presets, synchronise the clock, download records and clear memory, record high-quality audio and view the built-in calibration certificate.
Record post-processing
View every record as a time-history graph, read the values and spectrum at any point with the cursor, and export all or selected data to Excel for your report.
Spectral analysis
1/1 octave, 1/3 octave and 400-line FFT are recorded at the same time, in A, C or Z weighting, as live or averaged spectra.
Specifications
| SOUND LEVEL METER | |
|---|---|
| Standards | IEC 61672-1 (2013) Class 2, Group X; ANSI S1.4-1 (2014) Class 2, Group X; ANSI S1.43 (2007) Type 2; IEC 60651 Type 2 |
| Averaging | Exponential and linear |
| Time weightings | Slow or Fast |
| Frequency weightings | A, C and Z |
| Input ranges | Low or High |
| Sampling rate | 44.1 kHz |
| Measured metrics | Leq, Lmax, Lmin, Lpeak, SEL, LN% (1, 2, 5, 8, 10, 25, 50, 90, 95, 99%) |
| Peak maximum level | Low 110 dBZpk, High 130 dBZpk |
| Under-range level | Low 30 dBA, High 46 dBA |
| Electrical noise level | Low 24 dBA, High 40 dBA |
| Total noise level | Low 30 dBA, High 40 dBA |
| Resolution | 0.1 dB |
| Microphone | 1/2 inch, nominal sensitivity -35 dB ±3 dB re 1 V/Pa (17.78 mV/Pa) |
| SPECTRUM ANALYZER | |
| Standards | IEC 61260-1 (2014) Class 2, Group X (1/1 octave), Group Z (1/3 octave); ANSI S1.11-1 (2014) Class 2, Group X (1/1 octave) |
| Averaging | Linear (Leq) |
| 1/1 octave | 31.5 Hz to 8 kHz |
| 1/3 octave | 20 Hz to 16 kHz (PC software) |
| FFT | 400 lines, 6 bandwidths from 17.2 kHz to 539 Hz |
| TIMING | |
| Display refresh | 0.1 s |
| Record duration | 1 s resolution; presets 1 s, 10 s, 1 min, 5 min, 15 min, 60 min (adjustable 1 s to 1 h) |
| Real-time clock resolution | 1 s |
| RECORDING | |
| Modes | Single-store or Auto-store (aligned to real-time clock) |
| Data | all global metrics (A, C, Z), LN%, 1/1 octave, FFT (optional) |
| Memory | 198,948 records without FFT, 18,798 records with FFT |
| Continuous recording | up to 2 months at 5-min Leq, up to 2 years at 1-hour Leq |
| AUXILIARY INPUT | |
| Connector | 1/8 inch phone jack (female, mono) |
| Voltage range | Low ±0.15 Vpk, High ±1.5 Vpk |
| Routing | automatic when a jack is connected |
| ENVIRONMENTAL | |
| Operating temperature | 0 °C to 40 °C |
| Storage temperature | -10 °C to 50 °C |
| POWER | |
| Consumption | 70 mW running, 0.3 mW sleeping |
| Battery life | 48 h running, more than 6 months sleeping (unlimited with USB adapter) |
| Charging | 5 V USB |
| PHYSICAL | |
| Dimensions | 144 × 59 × 18.5 mm |
| Weight | 115 g |
| Tripod mount | 1/4-20 |
| ACCESSORIES | |
| Windscreen | 35 × 25 mm (12 mm hole) |
| USB cable | 0.9 m, A to Micro-B |
| Carrying case | 213 × 183 × 62 mm |
| Calibration certificate | tested to IEC 61672-3 (2013) |
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