convert a frequency (expressed in Hz) into a string in Scientific pitch notation representing the pitch. The scientific pitch notation is the notation used in the specification of [pitch in events]. For example, 440 is converted in "A4".

NOTE: the microtonal alteration, as in A#4+50 are not currently supported.

See midi tuning and functions @midicent2hz, @hz2midi, @hz2symb and @symb2midicent.

See also Midi Related Functions @hz2midi    @hz2midicent    @hz2symb    @midi_getChannel,    @midi_getCommandByte,    @midi_getCommand,    @midi_getMetaType,    @midi_isAftertouch,    @midi_isController,    @midi_isEndOfTrack,    @midi_isMeta,    @midi_isNoteOff,    @midi_isNoteOn,    @midi_isNote,    @midi_isPatchChange,    @midi_isPitchbend,    @midi_isPressure,    @midi_isTempo,    @midi_read,    @midi_track2ascii    @midi2hz    @midicent2hz    @symb2midicent