Speaker Soundfont — Pc

case $instrument in Piano) # Arpeggio: C-E-G rapid for i in 1 2 3 4; do echo -e "\x1b[10;$freq[$note]\x1b[11;50" > /dev/console echo -e "\x1b[10;$freq[$((note+4))]\x1b[11;50" > /dev/console echo -e "\x1b[10;$freq[$((note+7))]\x1b[11;50" > /dev/console done ;; Trumpet) echo -e "\x1b[10;$freq[$note]\x1b[11;$duration" > /dev/console ;; esac

If you want to hear what a "PC speaker soundfont" sounds like, search YouTube for: "PC speaker General MIDI" or "PC speaker Bohemian Rhapsody" The result is always monophonic, beepy, and surprisingly charming for 8-bit demoscene music.

# Play a note at 440 Hz for 1 second via PC speaker echo -e "\x1b[10;440\x1b[11;1000" > /dev/console # old console method # Modern: speaker-test -t sine -f 440 -c 1 -D hw:0,0 Since no standard SF2 loader exists for PC speaker, you create a script + frequency lookup table .

"pc speaker" midi mapper OR "pcsp" config A PC Speaker soundfont is not a soundfont in the sample playback sense—it's a synthesis directive table . For retro computing or extreme minimalism, it works. For any serious MIDI music, use a real soundfont (SF2) with FluidSynth.

[Instrument Mapping] Piano = Square 50% duty, rapid arpeggio (C-E-G) Trumpet = Square 50% duty, no arpeggio Bass = Square 25% duty (if supported), slow attack Flute = Sine-like via low-pass filtering (impossible without filter – just softer square) Drum Kick = Single low-frequency pulse (60 Hz for 50ms) Drum Snare = White noise (impossible – replaced by 2 kHz click burst) from the PCSP driver configuration ( /etc/pcsp.conf style):

#!/bin/bash # PC Speaker GM mapper – maps MIDI program to frequency table declare -A instruments instruments[0]="Piano" # will use arpeggio instruments[56]="Trumpet" # pure square Frequency table for note numbers 21-108 (A0 to C8) declare -A freq freq[60]=261.63 # C4 freq[64]=329.63 # E4 freq[67]=392.00 # G4

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