The smf command accepts as input Humdrum files containing **MIDI representations. All **MIDI spines present in the input stream are translated to SMF MIDI. Non-**MIDI spines are ignored and will not affect the SMF output.

-h	displays a help screen summarizing the command syntax
-t n.n	set initial tempo to n.n times the default tempo
-v n	specify default MIDI key-velocity value (0-127)

The performance tempo may be specified either in the command line or in the input Humdrum representation. The tempo may be specified on the command line by using the -t option. The -t must be followed by an integer or real value between 0.13 and 3.80. A value of 1.0 corresponds to the default tempo of 66 quarter-notes per minute. A value of 2.0 doubles the tempo, whereas a value of 0.5 halves the tempo. Alternatively, tempo may be specified using the **MIDI tandem interpretation for metronome marking (e.g. *MM96). Minimum and maximum tempi are 8 and 250 quarter-notes per minute respectively. Tempo specifications found in the input representation take precedence over any tempo specified on the command line. If no tempo information is available, smf assumes a default tempo of 66 quarter-notes per minute.

The -v option allows the user to specify a key-velocity default. MIDI instruments normally treat key-velocity data as dynamic or accent information -- thus higher key-velocity values are associated with accented notes. Permissible key-velocity values range between 0 (slowest) and 127 (fastest). The -v option can be used to set the default key-velocity for key-on commands with unspecified key-velocities. In the absence of the -v option, the default key-velocity value is 64.

• Pertinent description in the Humdrum User Guide
• Index to Humdrum Commands
• Table for Contents for Humdrum User Guide