This page illustrates the structure and content of a Bixlume acoustic measurement report. All data shown is illustrative — it demonstrates the format, the level of detail, and how findings are presented against regulatory benchmarks.
This survey was conducted to characterize the acoustic transmission between Unit A (source) and Unit B (receiving) on adjacent floors, and between Unit A and Unit C (receiving) on the same floor. Measurements were performed in accordance with ISO 16283-1 (airborne sound insulation) and ISO 16283-2 (impact sound insulation). The sound level meter used was a [Manufacturer] Class 1 instrument, serial number XXXXX, with a current calibration certificate dated [Date]. Field calibration was performed at the start and end of each measurement session using a certified acoustic calibrator at 94 dB / 1 kHz.
| Measurement Pair | Measured Rw (dB) | IRAM 4044 Minimum | Status | Performance |
|---|---|---|---|---|
| Unit A → Unit B (floor/ceiling) | 52 dB | 50 dB | Conformant | |
| Unit A → Unit C (party wall) | 44 dB | 50 dB | Non-Conformant |
| Measurement Pair | Measured Ln,w (dB) | IRAM 4044 Maximum | Status | Performance |
|---|---|---|---|---|
| Unit A → Unit B (impact, floor) | 63 dB | 65 dB | Conformant |
The floor-to-ceiling airborne sound insulation between Unit A and Unit B meets the minimum requirement of IRAM 4044. The impact noise transmission through the same floor assembly also conforms to the applicable standard. The party wall between Unit A and Unit C does not meet the minimum airborne sound insulation requirement, with a measured value 6 dB below the applicable threshold. This deficiency is consistent with a lightweight or single-layer wall construction without adequate acoustic treatment.
Construction of an independent acoustic lining on one face of the party wall, using a resilient-mounted gypsum board system with acoustic mineral wool infill. This approach avoids structural intervention and can achieve 8–12 dB improvement in Rw.
Replacement of the existing wall assembly with a higher-performance system. More disruptive but allows for a more significant improvement in acoustic performance and full control over the final specification.
Note on this illustrative example: All building descriptions, measurement values, addresses, and dates shown in this sample report are fictional and presented solely to illustrate the structure and format of a Bixlume technical report. Actual reports contain the specific data collected during the survey of the building in question.
Survey scope and methodology — description of the measurement pairs, the standards applied, and the instruments used.
Calibration records — field calibration data from before and after each measurement session.
Raw measurement data — third-octave band level data for all measurement positions, with spatial averages calculated.
Single-number ratings — Rw and Ln,w values calculated from the frequency data in accordance with ISO 717.
Regulatory comparison table — measured values alongside the applicable IRAM thresholds and developer specifications.
Conformance statement — clear declaration of whether each measurement pair meets or does not meet the applicable standard.
Treatment recommendations — where non-conformances are found, the report describes available remediation approaches for the specific deficiency.