pyACA.ToolFreq2Midi Namespace Reference

Functions
	ToolFreq2Midi (fInHz, fA4InHz=440)
	helper function: convert Hz to MIDI pitch (floating point)

Function Documentation

ToolFreq2Midi()

ToolFreq2Midi	(		fInHz,
			fA4InHz = 440 )

helper function: convert Hz to MIDI pitch (floating point)

Parameters

fInHz	frequency to be converted, can be scalar or vector
fA4InHz	The reference tuning frequency (default: 440Hz)

Returns

midi: MIDI values (floating point)

Definition at line 12 of file ToolFreq2Midi.py.

def ToolFreq2Midi(fInHz, fA4InHz=440):
    def convert_freq2midi_scalar(f, fA4InHz):
 
        if f <= 0:
            return 0
        else:
            return 69 + 12 * np.log2(f/fA4InHz)
 
    fInHz = np.asarray(fInHz)
    if fInHz.ndim == 0:
        return convert_freq2midi_scalar(fInHz, fA4InHz)
 
    midi = np.zeros(fInHz.shape)
    for k, f in enumerate(fInHz):
        midi[k] = convert_freq2midi_scalar(f, fA4InHz)
            
    return midi