Command: vox


vox – determine number of simultaneously active pitches in a Humdrum input


`` vox [inputfile ...] [ > outputfile.vox]``


The vox command calculates the number of tones sounding together at successive moments in time. It outputs a single Humdrum spine (**vox#) where successive integers indicate the total number of concurrently sounding pitches for each data record. Multiple-stops are properly supported.

The vox command accepts as input any pitch-encoded Humdrum representations listed below. For descriptions of the various input representations refer to Section 2 (Representation Reference) of this reference manual.

It is recommended that output files produced using the vox command should be given names with the distinguishing `.vox’ extension.

**cbr critical band rate (in equivalent rectangular bandwidths)
**cents hundredths of a semitone with respect to middle C=0 (e.g. 1200 equals C5)
**cocho cochlear coordinates (in millimeters)
**deg key-related relative scale degree
**degree key-related absolute scale degree
**freq fundamental frequency (in hertz)
**kern core pitch/duration representation
**pc pitch class representation
**pitch American National Standards Institute pitch notation (e.g. “A#4”)
**semits equal-tempered semitones with respect to middle C=0
**solfa tonic solfa syllables
**solfg French solfège system (fixed `doh’)
**specC spectral centroid (in hertz)
**Tonh German pitch system

Input representations processed by **vox*.*


The vox command provides only a help option:

-h displays a help screen summarizing the command syntax

Options are specified in the command line.


DOS 2.0 and up, with the MKS Toolkit. OS/2 with the MKS Toolkit. UNIX systems supporting the Korn shell or Bourne shell command interpreters, and revised awk (1985).