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).