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SLIP'25 SLIP'25 is now available as a BETA release, with the new ISO9613 edition, a new Table-mode, and more!

SLIP – Environmental noise prediction software

SLIP is a powerful engineering software for the calculation and presentation of environmental noise. The program is well established in Switzerland, and is constantly improved and adapted to the increasing demands of the practice and the needs of the users.

The following calculation models are implemented in SLIP'25 (full version):

• Road noise: SonRoad18^IMPROVED, StL-86+ extended with reflections^IMPROVED and tunnel portal;
• Railway noise: SEMIBEL extended with reflections and tunnel portal;
• Point and area sources: propagation according to ISO 9613^IMPROVED.

Meteorological effects^IMPROVED can be considered in calculations based on ISO 9613 (incl. SonRoad18). SLIP'25 includes the old and the new (second) edition of ISO9613^{NEW [BETA]} (also relevant for SonRoad18).

The Light version of SLIP is a reduced edition that includes only road-noise calculation models; this is the only difference to the full version (all other features and capabilities are identical).

SLIP is currently available in German and French.

System requirements: Windows ≥7, 64-bit; Intel/AMD x86-64 CPU, ≥2 cores; ≥8 GB RAM.

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See also

• Detailed description

• Web-documentation

• Downloads
• Prices & order