Bash: Create a cacophony of voices with 'Mimic' text-to-speech

A somewhat grotesque and macabre presentation of 'Mimic's text-to-speech functionality. The concept arising after recently trying out 'Mimic's features and capabilities. As a short review; I believe 'Mimic's main strengths lie in its speed and ease of execution on the command line, similar to that of 'espeak'. Other more featured text-to-speech solutions can be slow and cumbersome to initiate.

N.B. In the video, there are an unfortunate number of artifacts in the audio. These only manifest in PulseAudio stream recording and are not present while monitoring the audio in real-time.

#!/bin/bash
# (GNU bash, version 4.4.19(1)-release)
#
# Create a cacophony of 'Mimic' text-to-speech voices, using words found in the
# system's 'words' file. Note: The concept can be applied to any text-to-speech
# software and, as such, a rudimentary function using 'espeak' is included.
# (Mimic info: https://mycroft.ai/documentation/mimic/)
# - Optional parameters: '$1' number of words - '$2' Number of voices
#
# Version: 2018.08.11.15.54.15
# Source: https://oioiiooixiii.blogspot.com

function randWords() # RETURNS PUNCTUATED LIST OF WORDS FROM SYSTEM DICTIONARY
{
   shuf </usr/share/dict/words \
   | head -"$1" \
   | awk 1 ORS='. '
}

function randNum() # RETURNS RANDOM NUMBER BETWEEN '$1' and '$2'
{
   shuf -i "$1"-"$2" -n 1
}

function randVoice() # RETURNS NAME OF RANDOM MIMIC VOICE
{
   local voices=("ap" "slt" "kal" "awb" "kal16" "rms")
   printf "${voices[$(randNum 0 ${#voices[@]})]}"
}

function mimicSpeak() # INVOKES 'MIMIC' APPLICATION
{
   mimic \
      -voice "$(randVoice)" \
      --setf int_f0_target_mean="$(randNum 20 180)" \
      --setf duration_stretch="$(randNum 1 12)" \
      <<<"$1"
}

function espeakAlt() # INVOKES 'ESPEAK' ALTERNATIVE
{
   espeak \
      -p "$(randNum 1 200)" \
      -s "$(randNum 1 100)" \
      "$1"
}

function main()
{
   clear

   for (( i=0;i<"${2:-5}";i++  ))
   {
      local sentence="$(randWords "${1:-5}")"
      echo "$sentence"
      mimicSpeak "$sentence" &
      #espeakAlt "$sentence" &
   }
}

main "$@"
exit

#### NOTES: One line concept

# shuf </usr/share/dict/british-english \
# | head -5 \
# | sed ':a;N;$!ba;s/\n/. /g' \
# | tee > \
#   (
#       mimic \
#          -voice slt \
#          --setf int_f0_target_mean=50 \
#          --setf duration_stretch=16 \
#   )

download: mimic-cacophony.sh