gistfile1.txt

#!/bin/bash
# by jaggz.h {who is over at} gmail.com
# CC-BY.  Reference my email or Jaggz Tech @ Youtube

# gist-paste -u https://gist.github.com/jaggzh/040778fe4260f19ad35dce0fa083e523

defmodel=e # Default model from models=() array below

blank_line_delay=.3 # Not sure if this works for other systems' sleep commands

# piper=~/opt/voice/tts/piper/piper
piper=~/opt/lib/voice/tts/piper/piper
if [[ ! -x $piper ]]; then
	echo "No piper bin at: $piper" >&2
	exit
fi
# voicedir=~/models/tts/onyx
# model=~/models/tts/onyx/en_US-ryan-high.onnx
voicedir=~/data/models/tts/onyx

echo "Voices:" >&2
cd "$voicedir" && find . -type d | grep 'onnx$' | sed -e 's/^/  /' >&2

declare -A models

models=( # May be a subdir/path of voicedir
	[u]="en_US-ryan-high.onnx"
	[e]="en_US-ryan-high.onnx"
)
model=${models[$defmodel]}

echo
echo "Select model during typng by prefixing line with 'm:...'" >&2
for l in "${!models[@]}"; do
	echo " $l: ${models[$l]}"; >&2
done

echo
echo "Text me, one per line:" >&2
umask 0177
wavtmp="/tmp/tts-$USER.wav"

# Set up history file. Crop it to keep its size down
HISTFILE="/tmp/vpi_history-$USER"
touch "$HISTFILE"
echo "$txt" >> "$HISTFILE" # Append to history file
history -r "$HISTFILE"
tail -n 50 "$HISTFILE" > "${HISTFILE}.tmp" && mv "${HISTFILE}.tmp" "$HISTFILE"

while read -e txt; do
	# txt="${txt// /+}"
	printf 'You entered: {{%s}}\n' "$txt" >&2
	echo "$txt" >> "$HISTFILE" # Append to history file
	history -r "$HISTFILE"
	# See if user entered a prefix to select a model:
	pfx=''
	if [[ $txt =~ ^.: ]]; then
		pfx=$(printf "%s" "$txt" | sed -e 's/:.*$//')
		if [[ -z "${models[$pfx]}" ]]; then
			echo "  ERROR. Model '$pfx' seems to have been requested, but models[] array doesn't"
			echo "         seem to exist.  We're not changing anything and will speak it as typed."
		else
			model="$voicedir/${models[$pfx]}"
			echo "  MODEL SWITCHED TO: $model"
			# Strip prefix off text
			txt=$(printf "%s" "$txt" | sed -e 's/^[^:]\+://;')
		fi
	fi
	if [[ -z $txt ]]; then
		if [[ -n $pfx ]]; then
			pass # We don't say anything if they just changed the model
			     #  with, e.g. "e:", but didn't type anything else
		else
			echo "Blank text entered. I guess we'll delay briefly in case you intended a pause."
			sleep "$blank_line_delay"
		fi
	else
		cat <<-EOT >&2
			Running piper:
			printf '%s\n' "$txt" | "$piper" \\
				--model "$model" \\
				--output_file "$wavtmp"
			EOT
		printf '%s\n' "$txt" | "$piper" \
			--model "$model" \
			--output_file "$wavtmp"
		ls -lgG -- "$wavtmp"
		play "$wavtmp"
	fi
	txt='' # Done. Wipe'em
	pfx=''
done