EV / New EnergyOEMs + third-party type approval
AVAS Pedestrian-Warning Sound Compliance
01
Pain Points
- !AVAS regulations impose hard requirements on frequency drift rate, sound-level limits, activation range, and reverse signaling.
- !The fundamental's slope versus speed must be auto-fitted; reading charts manually is error-prone.
- !Type approval requires a PASS/FAIL certificate page in a standardized format.
02
The Tinia Approach
Spectrum + fundamental drift-slope fitting + sound-level limit evaluation auto-produce the certificate page — thresholds are explicitly configured and the same template fits multiple models.
Operating-condition segmentationSpectrumFundamental drift fittingLimit evaluationCertificate page
03
Nodes Used
Audio Segment Splitaudio_segment_split
Segment by speed / operating conditionOctave Analysisoctave_analysis
One-third-oct spectrum complianceFFT Spectrum Analysisfft_spectrum
Fundamental and harmonic extractionIndicator Mathindicator_math
Fundamental drift-slope fitting + sound levelSpec Limit Checkspec_limit_check
Frequency drift rate + sound-level limit evaluationCore nodes; add or remove steps as needed for your data and standards — the node graph is always editable.
04
Expected Output
- One-third-oct spectrum compliance and a fundamental-vs-speed curve.
- PASS / FAIL evaluation of frequency drift rate and sound-level limits.
- A type-approval certificate page.
Reference Standards / Engineering PracticeUN R138 series · GB AVAS standards
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