make a record of loud noise

rec.sh

#!/bin/bash

# Set the threshold, duration (in seconds), and recording directory
threshold=0.2
duration=10
recording_dir="/mnt/tera/audio/NOISE2"

# Set output options
output_to_console=true
output_to_log=true


# Set trap to handle SIGINT (CTRL+C) signal
trap "echo Exiting...; exit" SIGINT

while :
do
  # Record audio for the specified duration
  timeout "$duration" arecord -d "$duration" -f S16_LE -c 1 -r 44100 audio.wav &> /dev/null &
  pid=$!

  # Wait for the arecord command to complete
  wait $pid

  # Calculate the average audio level
  level=$(sox audio.wav -n stat 2>&1 | grep "Maximum amplitude" | awk '{print $3}')

  now=$(date +"%Y.%m-%d.%T")

  # Save the file and log the timestamp and maximum amplitude
  log_entry="$now $level"

  if (( $(echo "$level > $threshold" | bc -l) )); then
    mv audio.wav "$recording_dir/$now $level.wav"
  fi

  if $output_to_console; then
    echo "$log_entry"
  fi

  if $output_to_log; then
    echo "$log_entry" >> "$recording_dir/audio.log"
  fi
done