Running on gravel outdoors
Things like gravel offer a very interesting and above all wide-ranging spectrum. The rolling, pressing and bouncing of the sharp-edged, small stones creates, in addition to the dominant fundamental tone up to around 150 Hz, a very filigree sound carpet that extends up to 20 kHz (and higher) and which requires a curve that is as linear as possible for lifelike reproduction. Any over- or under-emphasis will have a strong influence on the sound character, so that rolling chippings can quickly degenerate into coarse gravel if you overdo it with the sounding.
As an exception, I have listed both channels so that you can better see the differences in time and level, which leave a clearly audible spatial impression because stones do not behave uniformly.
Running on a solid surface in rooms
You now get a completely different picture! The frequency band of the actual step ranges fairly evenly from around 180 Hz to six kHz and only ends at around 16 kHz. However, every room also causes more or less diffuse reflections, which we can see very clearly between the steps in the spectrum shown. Our example shows a vehicle hall with a concrete floor.
The basic tone of the appearance reverberates at around 250 Hz, while the typical “room sound” of this very special room extends from around 500 Hz to around five kHz. If strong sounding comes into its own here, basement rooms that are actually dull quickly sound far too sharp or, conversely, a large hangar sounds like a dark manhole.
Running in the snow
This is a very broadband sound that requires a linear response across the entire frequency range. If individual areas are missing, the sound tends to be sandy and muffled, and in the opposite case, metallic and sharp.
Running in the grass
If the lower mids are missing, the sneaking sniper quickly degenerates into a profane infantry trampling animal. The main frequency range used extends to only around 1.5 kHz, so a balanced reproduction curve up to two kHz is particularly important.
Interim conclusion
The fairy tale of better listening to opponents sneaking up on you is and remains a popular PR myth. Because as versatile as the sound spectra are on the most diverse backgrounds, it is also impossible to emphasize all of this optimally through sounding. As always, the golden mean is linear!
Result: Neutral wins over sounding
- 1 - Fragestellung: Marketing oder echter Vorteil?
- 2 - Räumliches Hören und jede Menge Voodoo
- 3 - Von Tönen, Klängen und Geräuschen
- 4 - Analysiert: Die menschliche Sprache
- 5 - Analysiert: Schritte und Bewegungen
- 6 - Analysiert: Schusswaffengeräusche und Explosionen
- 7 - Analysiert: Transportmittel und örtliche Situationen
- 8 - Zusammenfassung und Fazit
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