#!/bin/sh# create WAV-Files that can be used to create an audio Test CD## The intent of this Test CD is to allow you to test the reproduction# quality and response of an audio system by playing back audio# of various frequencies and power levels. Browse through the# script comments to see what all audio files are created.## all files are created in the current directory## Command Line options:# testcd.sh filename_prefix audio_length## filename_prefix is what each soundfile starts with. Defaults to# using testcd as the prefix.# audio_length is the length of audio data in seconds. Defaults to 30# seconds.# length of sample file in secondsif [ "$2" = "" ] ; then LENGTH="30"else LENGTH=$2fi# use 'fade' effect for smooth start and end of toneFT="0.05"# a different default volumeVOL=""#output file typeOFT=".wav"#our binarySOX=../src/sox# filenameprefixif [ "$1" = "" ] ; then PRE="testcd"else PRE=$1;fi# 2 channel 16 bit signed linear int with CD sampling rateSOXOPT="-c 2 -r 44100 -e signed-integer -b 16 -n"# file with list of filenamesLST="${PRE}.lst"#summarise secondsTC="0"#summarize file numbersFC="0"newname(){ FC="$(( $FC + 1 ))" LEN="$2" FADE=" fade $FT $LEN $FT" TC="$(( $TC + $LEN ))" if [ $FC -lt 10 ] ; then NAME="${PRE}_0${FC}_${1}${OFT}" else NAME="${PRE}_${FC}_${1}${OFT}" fi echo -n -e " \t$1" echo "$NAME" >>$LST}#empty / delete list fileecho "" >$LST## ok, lets start with the actual creation of the files### fixed frequencies,FREQ=" 19.4 23.1 27.5 32.7 38.9 46.2"FREQ="$FREQ 55.0 64.4 77.8 92.5 110.0 130.8 155.6 185.0"FREQ="$FREQ 220.0 261.6 311.1 367.0 440.0 523.3 622.3 740.0"FREQ="$FREQ 880.0 1046 1245 1480 1760 2093 2489 2960"FREQ="$FREQ 3520 4186 4978 5920 7040 8372 9956 11840"FREQ="$FREQ 14080 16744 19912"#FREQ="5 10 20 50 100 200 500 1000 2000 5000 10000 20000"echo "\n--- different frequencies"for f in $FREQ; do newname "${f}hz" $LENGTH$SOX $SOXOPT $NAME synth $LEN sine $f $FADE $VOLdone## frequency sweep# need some mark every octave#FREQ="220-3520" #4FREQ="55-14080" # 8 octFREQ="13.75-28160" # 10 octOCT=10TOCT=10TGES="$(( $OCT * $TOCT ))"MARKFREQ=622echo "\n--- frequency sweep range $FREQ"newname ${FREQ}hz $TGES $SOX $SOXOPT $NAME synth $LEN sine $MARKFREQ synth square amod 0.1 0 97 94 vol -3 db synth $LEN sine mix $FREQ $VOLFREQ="3520-220"FREQ="28160-13.75" # 9 octnewname ${FREQ}hz $TGES $SOX $SOXOPT $NAME synth $LEN sine $MARKFREQ synth square amod 0.1 0 97 94 vol -3 db synth $LEN sine mix $FREQ $VOL# CD frequenciesFREQ="22050 11025 5512.5 "echo "\n--- different frequencies $FREQ"for f in $FREQ; do newname "cd${f}hz" $LENGTH$SOX $SOXOPT $NAME synth $LEN sine $f $FADE $VOLdone## similar frequencies#FREQ1="9000"FREQ2="10000"echo "\n--- similar frequencies"newname ${FREQ1}_${FREQ2} $LENGTH$SOX $SOXOPT $NAME synth $LEN sine $FREQ1 synth sine mix $FREQ2 $FADE $VOLFREQ1="440"FREQ2="445"newname ${FREQ1}_${FREQ2} $LENGTH$SOX $SOXOPT $NAME synth $LEN sine $FREQ1 synth sine mix $FREQ2 $FADE $VOL##noise#echo "\n--- noise"newname whitenoise $LENGTH$SOX $SOXOPT $NAME synth $LEN whitenoise $FADE $VOLnewname pinknoise $LENGTH$SOX $SOXOPT $NAME synth $LEN pinknoise $FADE $VOLnewname brownnoise $LENGTH$SOX $SOXOPT $NAME synth $LEN brownnoise $FADE $VOL## square waves#FREQ="100 1000 10000"echo "\n--- square waves at $FREQ"for f in $FREQ; do newname ${f}_square $LENGTH$SOX $SOXOPT $NAME synth $LEN square $f vol -12 db $FADEdone## different volumes at a few frequencies#FREQ="100 1000 10000"DB="0 12 24 36 48 60 72 84 96"echo "\n--- different volumes $DB db at Frequencies $FREQ" for f in $FREQ; do for d in $DB; do newname ${f}_${d}db $LENGTH $SOX $SOXOPT $NAME synth $LEN sine $f vol -$d db $FADE donedone# silenceecho "\n-- silence"newname silence $LENGTH$SOX $SOXOPT $NAME synth $LEN sine 1000 vol 0## volume sweep at different frequencies#FREQ="100 1000 10000"MARKFREQ=662DB=100 # 10sec for 10dbecho "\n--- volume sweep 0..100% at Frequencies $FREQ"for f in $FREQ; do newname ${f}_dbsweep 200$SOX $SOXOPT $NAME synth $LEN sine $f synth exp amod 0.005 0 0 50 $DB done## offset test - a 1K sine with 1Hz square offset of 10%#echo "\n--- offset test, 1KHz tone with 1HZ 10% offset"newname offset $LENGTH$SOX $SOXOPT $NAME synth $LEN square 1 vol 0.1 synth sine mix 1000 $FADE $VOLnewname offset1 $LENGTH$SOX $SOXOPT $NAME synth $LEN square 1 0 0 square 1 vol 0.1 $FADE# effects for different channels## silence on one channel, full power on the other - different frequenciesFREQ="100 1000 10000"echo "\n--- single channel"for f in $FREQ; do newname ${f}leftchan $LENGTH $SOX $SOXOPT $NAME synth $LEN sine $f synth square amod 0 100 square amod 0 0 $Fade $VOL newname ${f}rightchan $LENGTH $SOX $SOXOPT $NAME synth $LEN sine $f synth square amod 0 0 square amod 0 100 $Fade $VOLdone# phase error between channelsFREQ="100 1000 10000"# equal phase/ 24 degrees / 90 degrees / 180 degreesPHASE="25"echo "\n--- phase error test between channels at $FREQ "for f in $FREQ; do for p in $PHASE; do newname ${f}hz_phase${p} $LENGTH $SOX $SOXOPT $NAME synth $LEN sine $f 0 0 sine $f 0 $p $FADE $VOL donedone### end - show statistics#echo "\n------------------\ncreated $FC files with prefix $PRE type $OFT"MIN="$(( $TC / 60 ))"echo "total length is $TC sec = $MIN min"#---------
#!/bin/sh
# create WAV-Files that can be used to create an audio Test CD
#
# The intent of this Test CD is to allow you to test the reproduction
# quality and response of an audio system by playing back audio
# of various frequencies and power levels. Browse through the
# script comments to see what all audio files are created.
#
# all files are created in the current directory
#
# Command Line options:
# testcd.sh filename_prefix audio_length
#
# filename_prefix is what each soundfile starts with. Defaults to
# using testcd as the prefix.
# audio_length is the length of audio data in seconds. Defaults to 30
# seconds.
# length of sample file in seconds
if [ "$2" = "" ] ; then
LENGTH="30"
else
LENGTH=$2
fi
# use 'fade' effect for smooth start and end of tone
FT="0.05"
# a different default volume
VOL=""
#output file type
OFT=".wav"
#our binary
SOX=../src/sox
# filenameprefix
if [ "$1" = "" ] ; then
PRE="testcd"
else
PRE=$1;
fi
# 2 channel 16 bit signed linear int with CD sampling rate
SOXOPT="-c 2 -r 44100 -e signed-integer -b 16 -n"
# file with list of filenames
LST="${PRE}.lst"
#summarise seconds
TC="0"
#summarize file numbers
FC="0"
newname()
{
FC="$(( $FC + 1 ))"
LEN="$2"
FADE=" fade $FT $LEN $FT"
TC="$(( $TC + $LEN ))"
if [ $FC -lt 10 ] ; then
NAME="${PRE}_0${FC}_${1}${OFT}"
else
NAME="${PRE}_${FC}_${1}${OFT}"
fi
echo -n -e " \t$1"
echo "$NAME" >>$LST
}
#empty / delete list file
echo "" >$LST
#
# ok, lets start with the actual creation of the files
#
#
# fixed frequencies,
FREQ=" 19.4 23.1 27.5 32.7 38.9 46.2"
FREQ="$FREQ 55.0 64.4 77.8 92.5 110.0 130.8 155.6 185.0"
FREQ="$FREQ 220.0 261.6 311.1 367.0 440.0 523.3 622.3 740.0"
FREQ="$FREQ 880.0 1046 1245 1480 1760 2093 2489 2960"
FREQ="$FREQ 3520 4186 4978 5920 7040 8372 9956 11840"
FREQ="$FREQ 14080 16744 19912"
#FREQ="5 10 20 50 100 200 500 1000 2000 5000 10000 20000"
echo "\n--- different frequencies"
for f in $FREQ; do
newname "${f}hz" $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $f $FADE $VOL
done
#
# frequency sweep
# need some mark every octave
#
FREQ="220-3520" #4
FREQ="55-14080" # 8 oct
FREQ="13.75-28160" # 10 oct
OCT=10
TOCT=10
TGES="$(( $OCT * $TOCT ))"
MARKFREQ=622
echo "\n--- frequency sweep range $FREQ"
newname ${FREQ}hz $TGES
$SOX $SOXOPT $NAME synth $LEN sine $MARKFREQ synth square amod 0.1 0 97 94 vol -3 db synth $LEN sine mix $FREQ $VOL
FREQ="3520-220"
FREQ="28160-13.75" # 9 oct
newname ${FREQ}hz $TGES
$SOX $SOXOPT $NAME synth $LEN sine $MARKFREQ synth square amod 0.1 0 97 94 vol -3 db synth $LEN sine mix $FREQ $VOL
# CD frequencies
FREQ="22050 11025 5512.5 "
echo "\n--- different frequencies $FREQ"
for f in $FREQ; do
newname "cd${f}hz" $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $f $FADE $VOL
done
#
# similar frequencies
#
FREQ1="9000"
FREQ2="10000"
echo "\n--- similar frequencies"
newname ${FREQ1}_${FREQ2} $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $FREQ1 synth sine mix $FREQ2 $FADE $VOL
FREQ1="440"
FREQ2="445"
newname ${FREQ1}_${FREQ2} $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $FREQ1 synth sine mix $FREQ2 $FADE $VOL
#
#noise
#
echo "\n--- noise"
newname whitenoise $LENGTH
$SOX $SOXOPT $NAME synth $LEN whitenoise $FADE $VOL
newname pinknoise $LENGTH
$SOX $SOXOPT $NAME synth $LEN pinknoise $FADE $VOL
newname brownnoise $LENGTH
$SOX $SOXOPT $NAME synth $LEN brownnoise $FADE $VOL
#
# square waves
#
FREQ="100 1000 10000"
echo "\n--- square waves at $FREQ"
for f in $FREQ; do
newname ${f}_square $LENGTH
$SOX $SOXOPT $NAME synth $LEN square $f vol -12 db $FADE
done
#
# different volumes at a few frequencies
#
FREQ="100 1000 10000"
DB="0 12 24 36 48 60 72 84 96"
echo "\n--- different volumes $DB db at Frequencies $FREQ"
for f in $FREQ; do
for d in $DB; do
newname ${f}_${d}db $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $f vol -$d db $FADE
done
done
# silence
echo "\n-- silence"
newname silence $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine 1000 vol 0
#
# volume sweep at different frequencies
#
FREQ="100 1000 10000"
MARKFREQ=662
DB=100 # 10sec for 10db
echo "\n--- volume sweep 0..100% at Frequencies $FREQ"
for f in $FREQ; do
newname ${f}_dbsweep 200
$SOX $SOXOPT $NAME synth $LEN sine $f synth exp amod 0.005 0 0 50 $DB
done
#
# offset test - a 1K sine with 1Hz square offset of 10%
#
echo "\n--- offset test, 1KHz tone with 1HZ 10% offset"
newname offset $LENGTH
$SOX $SOXOPT $NAME synth $LEN square 1 vol 0.1 synth sine mix 1000 $FADE $VOL
newname offset1 $LENGTH
$SOX $SOXOPT $NAME synth $LEN square 1 0 0 square 1 vol 0.1 $FADE
# effects for different channels
#
# silence on one channel, full power on the other - different frequencies
FREQ="100 1000 10000"
echo "\n--- single channel"
for f in $FREQ; do
newname ${f}leftchan $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $f synth square amod 0 100 square amod 0 0 $Fade $VOL
newname ${f}rightchan $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $f synth square amod 0 0 square amod 0 100 $Fade $VOL
done
# phase error between channels
FREQ="100 1000 10000"
# equal phase/ 24 degrees / 90 degrees / 180 degrees
PHASE="25"
echo "\n--- phase error test between channels at $FREQ "
for f in $FREQ; do
for p in $PHASE; do
newname ${f}hz_phase${p} $LENGTH
$SOX $SOXOPT $NAME synth $LEN sine $f 0 0 sine $f 0 $p $FADE $VOL
done
done
#
#
# end - show statistics
#
echo "\n------------------\ncreated $FC files with prefix $PRE type $OFT"
MIN="$(( $TC / 60 ))"
echo "total length is $TC sec = $MIN min"
#---------