Global Decibel Functions

Convert to and from dB values from amplitude or energy coefficient values. More...

Functions
template<class Type >
Type	dBCoefficient (Type x, Type ref=1.0)
	Return coefficient corresponding to a ratio of Real dB values.
template<class Type >
Type	dBSPL (Type x, Type ref=1.0)
	Return the dB SPL of two amplitudes.
template<class Type >
Type	dBSIL (Type x, Type ref=1.0)
	Return the dB SIL of two amplitudes.

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Detailed Description

Convert to and from dB values from amplitude or energy coefficient values.

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Function Documentation

template<class Type >

Type dBCoefficient	(	Type	x,
		Type	ref = 1.0
	)		[inline]

Return coefficient corresponding to a ratio of Real dB values.

Note: Type must be floating point type.

Parameters:

x	dBSPL amplitude
ref	dBSPL reference amplitude (defaults to 1.0)

Definition at line 32 of file Dynamics.h.

References Return.

{ Return( pow(10.0, x / 20.0 ) / ref); }

template<class Type >

Type dBSIL	(	Type	x,
		Type	ref = 1.0
	)		[inline]

Return the dB SIL of two amplitudes.

Note: Type must be floating point type.

Parameters:

x	dBSIL amplitude
ref	dBSIL reference amplitude (defaults to 1.0)

Definition at line 45 of file Dynamics.h.

References Return.

{ Return 10.0 * log10(x / ref); }

template<class Type >

Type dBSPL	(	Type	x,
		Type	ref = 1.0
	)		[inline]

Return the dB SPL of two amplitudes.

Note: Type must be floating point type.

Parameters:

x	dBSPL amplitude
ref	dBSPL reference amplitude (defaults to 1.0)

Definition at line 39 of file Dynamics.h.

References Return.

{ Return 20.0 * log10(x / ref); }