SIIANSI S3.5
0.00
Audibility: 0%
LAF / LASIEC 61672-1 (A-IIR)
--.-
LAS: -- | LAeq: --
LCF / LZFIEC 61672-1 (C/Z)
--.-
LCS: -- | LPeak: --
STIIEC 60268-16
0.00
Rating: Unacceptable
PIASTM E1130
--%
AI: -- (Confidential)
C50 / RT60ISO 3382 (True RIR)
--.-
RT60: -- s (Sweep Req.)
ANSI S1.11 Octave Spectrum vs L90 Floor vs Masking Zi
125Hz - 8kHz (Power Integrated)
Continuous Time History (LAF, LCF & SII)
60s Rolling Buffer
Standards-Compliant Telemetry Log (Decoupled Background Clock)
0 samples
| Time (UTC) | LAF | LAS | LCF | LPeak | SII | STI | PI (%) | Node ID | Compliance Tier |
|---|
ANSI S3.5-1997 (R2020) Speech Spectrum & Audiogram Settings
ANSI S3.5 Band-by-Band Audibility & Masking Matrix
| Band (fi) | Speech (Ei) | Noise (Ni / L90) | Masking (Zi) | Threshold (Ti) | Eff. SNR | Audibility (Ai) | Weight (Ii) | Contrib. (Ci) |
|---|---|---|---|---|---|---|---|---|
| Stream inactive | ||||||||
ISO 3382-1 / ISO 3382-2 True ESS Sweep & Convolver Deconvolution
Emits a Logarithmic Exponential Sine Sweep (ESS, $20\,\text{Hz} - 20\,\text{kHz}$). Records physical room reaction via microphone and deconvolves via hardware-accelerated OfflineAudioContext convolution against the analytical inverse filter $f_{\text{inv}}(t)$. Extracts physical $C_{50}$, $D_{50}$, and Schroeder $RT_{60}$.
Physical Room Impulse Response h(t) & Schroeder Energy Decay Curve
No sweep captured
C50Physical Clarity
--.- dB
ISO 3382 Speech ($>0\,\text{dB}$ good)
D50Physical Definition
--.-%
Early energy ratio ($>50\%$)
T20 / T30Reverb
--.- s
Schroeder linear regression
EDTEarly Decay
--.- s
$0\text{ dB}$ to $-10\text{ dB}$ decay slope
ASTM E1130-16 / ISO 22955:2021 Open-Plan Space Acoustic Quality
PIASTM E1130
--%
Rating: Awaiting stream
AIANSI S3.5
0.00
Articulation Index
rDISO 22955
-- m
Distraction radius ($D_{2,S}$ decay)
rPISO 22955
-- m
Privacy radius ($D_{2,S}$ decay)
IEC 60942:2018 Absolute 2-Point Calibration Wizard (94.0 / 114.0 dB)
Sens: -- dBFS/Pa | Lin. Err: -- dB
ISO 1996-2 Spatial Grid Survey Node Management
--.- dBA (0 Nodes)
Multi-Layer DSP & Preprocessing Audit Matrix
| Layer | Auto Gain Control (AGC) | Noise Suppression (NS) | Echo Cancellation (AEC) |
|---|---|---|---|
| 1. App Layer | Standby | Standby | Standby |
| 2. Browser Layer | Standby | Standby | Standby |
| 3. OS Layer | Standby | Standby | Standby |
| 4. Hardware Layer | Standby | Standby | Standby |
Session Cryptographic SHA-256 Digest (W3C WebCrypto)
Every continuous measurement record is cryptographically signed with SHA-256 to ensure tamper-evident logs for legal and building code verification.
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 (Awaiting Session)