COMMAND

deg -- translate selected Humdrum pitch-related representations to relative scale degree (**deg)


SYNOPSIS

deg [-k|K key] [-tx] [inputfile ...] [> outputfile.deg]


DESCRIPTION

The deg command transforms various pitch-related inputs to the corresponding scale degree. The command outputs one or more Humdrum **deg spines -- where scale degrees are indicated by the numbers 1 (tonic) to 7 (leading tone). Scale degree information can be determined only with reference to some prevailing key. For example, the pitch C4 is the tonic (1) in the key of C major, but the submediant (6) in the key of E minor. The deg command expects a tandem interpretation indicating the key of the input passage; deg will adapt to specified changes of key within an input. If no key information is provided prior to the first pitch-related data, deg issues an error message and terminates.

The deg command differs from the (related) degree command in that it outputs relative (rather than absolute) pitch-height information. Upward pitch motions are indicated by the caret (^), whereas downward pitch motions are indicated by the lower-case letter `v'. Hence, the token `1' followed by `^5' means that the ensuing dominant pitch is above rather than below the preceding tonic pitch. No absolute pitch-height information is represented. As in the case of degree, plus and minus signs indicate whether a pitch has been chromatically raised or lowered. For example, the pitch A-flat is designated `6-' in the key of C major, but `6' in the key of C minor. The harmonic minor scale is assumed for all minor keys. Thus, B-flat is considered a "lowered" seventh degree in C minor, whereas B natural is considered the "normal" (rather than "raised") seventh degree. For some applications, this interpretation of the minor-scale seventh degree may cause difficulties.

The deg command is able to translate any of the pitch-related representations listed below. For descriptions of the various input representations (including **deg) refer to Section 2 (Representation Reference) of this reference manual.

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

**kerncore pitch/duration representation
**pitchAmerican National Standards Institute pitch notation (e.g. "A#4")
**solfgFrench solfège system (fixed `doh')
**TonhGerman pitch system
Input representations processed by deg.

OPTIONS

The deg command provides the following options:
-hdisplays a help screen summarizing the command syntax
-k keyspecify default key
-K keyspecify override key
-tsuppresses printing of all but the first note of a group of tied **kern notes
-xsuppresses printing of non-**deg signifiers
Options are specified in the command line.

The -t option ensures that only a single output value is given for tied **kern notes; the output coincides with the first note of the tie.

In the default operation, deg outputs non-pitch-related signifiers in addition to the degree value. For example, in the key of D major, the **pitch token "G5zzz" will result in the output "4zzz" -- that is, after translating G5 to 4, the "zzz" signifiers are retained in the output. For some applications, echoing non-pitch-related signifiers in the output is useful. However, in other situations, the result can prove confusing -- especially, when the non-pitch-related signifiers are numbers. Consider the case of the **kern token "4f#" in the key of D minor; after translating `f#' to `3+' (i.e. raised third degree), the preceding non-pitch-related signifier `4' will also be output, hence the value 43+ -- which may cause confusion.

The -x option is useful for eliminating non-pitch-related signifiers from the output. For most **kern inputs, the -x option is recommended.


EXAMPLES

The following example illustrates the use of deg. The input contains four pitch-related spines -- one of which (**MIDI) cannot be processed by deg. In addition, there is one non-pitch-related spines (**embell).
!! `deg' example.
**kern**Tonh**MIDI**solfg**pitch**embell
*M2/4*M2/4*M2/4*M2/4*M2/4*M2/4
*C:*d:*G#:*a:*F:*F:
=1=1=1=1=1=1
8ee-Gis2/60/do3F4fooct
../-60/...
8fH2/62/fa3rupt
../-62/...
8dd-B2/70/mi3E4ct
../-70/...
8d--Cis4/61/rF4sus
../-61/...
=2=2=2=2=2=2
[4a-r.mi~b3F4 A4.
.Heses2.re3G4 Bb4ct
4a-]C3/48/ /52/do3E4 C5ct
../-48/...
.H2 E3/-52/la3G4ct
=3=3=3=3=3=3
rA2 F3.rF4.
==================
*-*-*-*-*-*-
Executing the command:

deg -tx input > output.deg

produces the following result:

!! `deg' example.
**deg**deg**MIDI**deg**deg**embell
*M2/4*M2/4*M2/4*M2/4*M2/4*M2/4
*C:*d:*G#:*a:*F:*F:
=1=1=1=1=1=1
3-4+/60/31ct
../-60/...
v4^6+/62/^6rupt
../-62/...
^2-v6/70/v5v7ct
../-70/...
v2-^7/61/r^1sus
../-61/...
=2=2=2=2=2=2
^6-r.v5-1 ^3.
.v6-.v4v2 ^4ct
.^7-/48/ /52/v3v7 ^5ct
../-48/...
.v6+ ^2/-52/^1v2ct
=3=3=3=3=3=3
rv5 ^3.rv1.
==================
*-*-*-*-*-*-
Both processed and unprocessed spines are output. Notice that the tied note at the beginning of measure 2 in the **kern spine has been rendered as a single note rather than as two notes (due to the -t option). Also notice that the non-pitch-related signifiers (e.g. foo) in the first notes of the **pitch spine have been stripped away (due to the -x option). Note that the plus and minus signs merely indicate that a scale degree has been raised or lowered, but not by how much. Hence both the D-flat and D double-flat in measure 1 of the first (**kern) spine are rendered as `2-'.


FILES

The file x_option.awk is used by this program when the -x option is invoked.


PORTABILITY

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).


SEE ALSO

**deg (2), **degree (2), degree (4), **kern (2), kern (4), **pitch (2), pitch (4), **solfg (2), solfg (4), **Tonh (2), tonh (4)