Pit-to-Singer Balance Ratio

Calculate pit-to-singer RMS pressure ratio and relative decibel level.

Description

Pit-to-singer balance can be expressed as an RMS pressure ratio and relative decibels.

Pit-to-singer balance can be expressed as an RMS pressure ratio and relative decibels. Pressure uses 20 times the log ratio rather than the power-ratio factor of ten.^[1]

Calculate pit-to-singer RMS pressure ratio and relative decibel level.

When to use Pit-to-Singer Balance Ratio

Use this tool to calculate pit-to-singer RMS pressure ratio and relative decibel level.

Prepare production measurements or checklist records for one planning period. Confirm units, staffing assumptions and caller-selected criteria before running the calculation.

How to use Pit-to-Singer Balance Ratio and understand its results

Prepare production measurements or checklist records for one planning period. Confirm units, staffing assumptions and caller-selected criteria before running the calculation.
Enter pitRmsPressurePascals, singerRmsPressurePascals using the field table and calculation rules, then run the tool.
Read pressureRatio, levelDifferenceDecibels. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
pitRmsPressurePascals	Pit RMS sound pressure (Pa)	number; minimum: 0	Required
singerRmsPressurePascals	Singer RMS sound pressure (Pa)	number; minimum: 0	Required

Enter strictly positive RMS pressures in pascals using comparable measurements. Return pit/singer ratio and signed relative level; equal pressure gives zero dB.

ratio=pitPressure/singerPressure; levelDifference=20 log10(ratio)

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
pressureRatio	Pit-to-singer pressure ratio	number; minimum: 0
levelDifferenceDecibels	Pit minus singer level (dB)	number

json

{
  "input": {
    "pitRmsPressurePascals": 0.4,
    "singerRmsPressurePascals": 0.5
  },
  "output": {
    "pressureRatio": 0.8,
    "levelDifferenceDecibels": -1.938200260161128
  }
}

Limitations and assumptions

Zero pressures are rejected. This does not measure sound, determine absolute SPL, assess intelligibility or include spatial/spectral differences.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Distributed Speaker Load: Total distributed-speaker taps against an amplifier loading limit. For a complementary task, use Dante Latency Budget: Budget Dante audio latency across devices and network hops.

References

Pit-to-Singer Balance Ratio — tool.io

Similar or alternative tools

Distributed Speaker Load
Total distributed-speaker taps against an amplifier loading limit.
Dante Latency Budget
Budget Dante audio latency across devices and network hops.