Case Study: Diagnosing Cabin or Dashboard Resonance at Idle or Steady Speed

Some vibration problems do not show up as obvious loose parts.

The cabin looks normal, the mount looks normal, but at idle or steady speed the dashboard, bracket, or interior structure carries a repeated buzz or shake that is hard to ignore.

This is a strong use case for Resonance Scan.

The practical question

You want to know:

• is there a dominant cabin or dashboard resonance?
• did a bracket change or tightening step reduce it?
• which mounting point carries less vibration?
• is the problem tied to one operating condition such as idle or a specific steady speed?

Why normal troubleshooting often fails

Without measurement, users tend to:

• press on trim panels by hand
• tighten random fasteners
• add foam where it seems convenient
• guess whether the buzz became better or worse

That can waste time because the source may not be the part that sounds loudest.

The real problem may be:

• one mount location transmitting vibration strongly
• a structure resonating at a specific frequency
• one axis coupling vibration into the cabin more than expected

Best tool

Use Resonance Scan .

This mode is designed for repeated vibration comparison and is especially useful when:

• the operating condition is stable
• you want to compare one mounting point against another
• you want to test before and after a mechanical change

Example comparison

A clean first test:

• Scan 1: dashboard mount at idle
• Scan 2: same mount after tightening or damping

Or:

• Scan 1: one mounting point at steady speed
• Scan 2: alternative mounting point at the same speed

Keep these stable:

• same phone position unless location is the thing you are testing
• same operating condition
• similar duration
• one variable changed at a time

What Resonance Scan tells you

The most useful first reading order is:

1. Dominant frequency
2. Resonance strength
3. Dominant axis

That helps answer:

• where the strongest repeated vibration sits
• how strong that response is
• which direction is carrying it

Typical result patterns

Decision value

This mode helps you stop doing blind cabin-rattle experiments.

Instead of:

• “I think the dashboard sounds a little better”

you can say:

• “The revised mounting point reduced the dominant vibration response enough to keep”

Recommended workflow

1. Use Resonance Scan in one stable operating condition.
2. Save a clearly labeled baseline.
3. Change one mounting or hardware variable.
4. Scan again under the same condition.
5. Compare frequency, strength, and axis response.

When to combine with Motion Quality

If the vibration problem affects footage or perceived recording stability, follow up with Camera Rig .

That way you can confirm not only that the vibration changed, but that the real recording result improved too.

Who this is for

• drivers troubleshooting dashboard or bracket buzz
• users testing cabin mounting points
• mechanics and tuners validating before-and-after changes
• anyone comparing idle or steady-speed vibration behavior