tunebass: added.

1 files changed, 83 insertions, 0 deletions

diff --git a/tunebass b/tunebass
new file mode 100755
index 0000000..5394abc
--- /dev/null
+++ b/tunebass
@@ -0,0 +1,83 @@
+#!/bin/bash
+
+# Ear tuner for guitar and bass. Install tunebass on your $PATH, and
+# symlink it to tunegtr.
+
+# this used to be a one-liner:
+#play -n synth 2 pluck ${1:-A2} repeat 99999
+
+case "$0" in
+  *gtr*|*guit*)
+    notes="E4 B3 G3 D3 A2 E2"
+    note=6
+    lastnote=6
+    ;;
+  *)
+    notes="G2 D2 A1 E1"
+    note=4
+    lastnote=4
+    ;;
+esac
+
+prompt="Space: next string, BkSpc: prev string, 1-$lastnote: strings, q: quit, ?: help"
+
+# these seem like they ought to be the arrow keys, but they're actually
+# \n and \b... kcud1 and kcub1 are the 'application mode' versions, which
+# doesn't do us any good here.
+#down="$( tput cud1 )"
+#left="$( tput cub1 )"
+
+# these are correct for xterm and derivatives, and for the linux console.
+down="$( printf "\x1b\x5bB" )"
+left="$( printf "\x1b\x5bD" )"
+
+up="$( tput cuu1 )"
+right="$( tput cuf1 )"
+pageup="$( tput kpp )"
+pagedown="$( tput knp )"
+
+esc="$( printf "\x1b" )"
+enter='
+'
+
+oldnote=
+pid=
+echo "$prompt"
+while true; do
+  narg="$( echo $notes | cut -d' ' -f $note )"
+  if [ "$oldnote" != "$note" ]; then
+    [ "$pid" != "" ] && kill "$pid"
+    echo -e -n "\rString: $note   Note: $narg"
+    tput el
+    play --buffer 1024 -qn synth 2 pluck $narg repeat - &>/dev/null &
+    pid="$!"
+    oldnote="$note"
+  fi
+  key=
+  read -rs -N5 -t 0.1 key
+  if [ "$key" != "" ]; then
+    case "$key" in
+      [1-9])
+        [ "$key" -le "$lastnote" ] && note=$key ;;
+      a|A|h|H|||$left|$pageup)
+        note=$(( note + 1 )); [ $note -gt $lastnote ] && note=1 ;;
+      d|D|l|L|' '|'	'|$right|$enter|$pagedown)
+        note=$(( note - 1 )); [ $note = 0 ] && note=$lastnote ;;
+      s|S|j|J|$down)
+        note=$lastnote ;;
+      w|W|k|K|$up)
+        note=1 ;;
+      \?)
+       echo
+       cat <<EOF
+Use space + backspace, arrow keys, pageup/down, WASD, HJKL, or numbers
+1 to $lastnote to pick a string. Tune your strings to the notes you hear.
+Press Q or Escape to exit.
+EOF
+        ;;
+      $esc|q|Q) break ;;
+    esac
+  fi
+done
+kill "$pid"
+echo