skratchdot

#!/usr/bin/env bash

# create 1 second 440Hz sine wave
sox -n -c 1 -r 44100 sine.wav synth 1 sine 440

# create 1 second of silence
sox -n -c 1 -r 44100 silence.wav trim 0 1

# create 1 second 440Hz sine wave followed by 1 second of silence
sox -V sine.wav silence.wav output.wav