General Functions

pyvoimooo.eps

Return the machine epsilon, that is, the difference between 1.0 and the next value representable by the default floating-point type used in the underlying C++ implementation.

pyvoimooo.sizeoffloat

The size of the default float type of Voimooo [number of bytes]

pyvoimooo.pi

The value of \pi.

This attribute is provided to reflect the actual value used in the underlying C++ implementation.

pyvoimooo.pi2

Twice the value of \pi.

This attribute is provided to reflect the actual value used in the underlying C++ implementation.

pyvoimooo.lin2db(v)

Parameters

v – Input value on linear scale.

Returns

the value on a decibel [dB] scale.

lin2dbd provides the same for 64b float values.

New in version 0.8.9.

pyvoimooo.db2lin(v)

Parameters

v – Input value on decibel scale.

Returns

the value on a linear scale.

db2lind provides the same for 64b float values.

New in version 0.8.9.

pyvoimooo.hz2cent(v)

Parameters

v – Input value on linear hertz scale.

Returns

the value on a cent scale (relative to 440Hz).

New in version 0.8.9.

pyvoimooo.cent2hz(v)

Parameters

v – Input value on cent scale (relative to 440Hz).

Returns

the value on a linear hertz scale.

New in version 0.8.9.

pyvoimooo.cent2freqratio(v)

Parameters

v – Input value on cent scale.

Returns

the value as a linear coefficient.

New in version 0.10.1.

pyvoimooo.freqratio2cent(v)

Parameters

v – A linear coefficient.

Returns

the value on cent scale.

New in version 0.10.1.

pyvoimooo.dftlen_from_over_sampling_factor(winlen, osf)

Parameters

• winlen (int) – A window length.

• osf (int) – An over-sampling factor.

Returns

The power-2 dftlen, based on a given winlen and an over-sampling factor osf.

New in version 0.8.9.

pyvoimooo.libversion

Return the version of the Voimooo library that is wrapped by this Python wrapper. Identical to __version__.

New in version 0.8.9.

pyvoimooo.compile_info

Report some compile-time information in a string.

New in version 0.8.9.

pyvoimooo.user_name

The user name, as obtained by Voimooo through the operating system.

New in version 0.10.1.

pyvoimooo.user_id

The user id, which is the MD5 of the user_name.

New in version 0.10.1.