scripts/testcd.sh

   1 #!/bin/sh
   2 # create WAV-Files that can be used to create an audio Test CD
   3 #
   4 # The intent of this Test CD is to allow you to test the reproduction
   5 # quality and response of an audio system by playing back audio
   6 # of various frequencies and power levels.  Browse through the
   7 # script comments to see what all audio files are created.
   8 #
   9 # all files are created in the current directory
  10 #
  11 # Command Line options:
  12 #   testcd.sh filename_prefix audio_length
  13 #
  14 #   filename_prefix is what each soundfile starts with.  Defaults to
  15 #   using testcd as the prefix.
  16 #   audio_length is the length of audio data in seconds.  Defaults to 30
  17 #   seconds.
  18
  19
  20 # length of sample file in seconds
  21
  22 if  [ "$2"  = "" ] ; then
  23     LENGTH="30"
  24 else
  25     LENGTH=$2
  26 fi
  27 # use 'fade' effect for smooth start and end of tone
  28 FT="0.05"
  29
  30 # a different default volume
  31 VOL=""
  32
  33 #output file type
  34 OFT=".wav"
  35
  36 #our binary
  37 SOX=../src/sox
  38
  39 # filenameprefix
  40 if  [ "$1" = "" ] ; then
  41     PRE="testcd"
  42 else
  43     PRE=$1;
  44 fi
  45 # 2 channel 16 bit signed linear int with CD sampling rate
  46 SOXOPT="-c 2 -r 44100 -e signed-integer -b 16 -n"
  47
  48 # file with list of filenames
  49 LST="${PRE}.lst"
  50
  51
  52 #summarise seconds
  53 TC="0"
  54 #summarize file numbers
  55 FC="0"
  56
  57
  58 newname()
  59 {
  60     FC="$(( $FC + 1 ))"
  61     LEN="$2"
  62     FADE=" fade $FT $LEN $FT"
  63
  64     TC="$(( $TC + $LEN ))"
  65
  66     if [ $FC -lt 10 ] ; then
  67         NAME="${PRE}_0${FC}_${1}${OFT}"
  68     else
  69         NAME="${PRE}_${FC}_${1}${OFT}"
  70     fi
  71     echo -n -e  " \t$1"
  72     echo "$NAME" >>$LST
  73 }
  74
  75 #empty / delete list file
  76 echo "" >$LST
  77
  78
  79 #
  80 # ok, lets start with the actual creation of the files
  81 #
  82
  83 #
  84 # fixed frequencies,
  85 FREQ="                   19.4  23.1  27.5  32.7  38.9  46.2"
  86 FREQ="$FREQ  55.0  64.4  77.8  92.5 110.0 130.8 155.6 185.0"
  87 FREQ="$FREQ 220.0 261.6 311.1 367.0 440.0 523.3 622.3 740.0"
  88 FREQ="$FREQ 880.0  1046  1245  1480  1760  2093  2489  2960"
  89 FREQ="$FREQ  3520  4186  4978  5920  7040  8372  9956 11840"
  90 FREQ="$FREQ 14080 16744 19912"
  91 #FREQ="5 10 20 50 100 200 500 1000 2000 5000 10000 20000"
  92 echo "\n--- different frequencies"
  93 for f in $FREQ; do
  94     newname "${f}hz" $LENGTH
  95 $SOX $SOXOPT $NAME synth $LEN sine $f $FADE $VOL
  96 done
  97
  98
  99
 100 #
 101 # frequency sweep
 102 # need some mark every octave
 103 #
 104 FREQ="220-3520"    #4
 105 FREQ="55-14080"    # 8 oct
 106 FREQ="13.75-28160" # 10 oct
 107 OCT=10
 108 TOCT=10
 109 TGES="$(( $OCT * $TOCT ))"
 110 MARKFREQ=622
 111 echo "\n--- frequency sweep range $FREQ"
 112 newname ${FREQ}hz $TGES
 113 $SOX $SOXOPT $NAME synth $LEN sine $MARKFREQ synth square amod 0.1 0 97 94 vol -3 db synth $LEN sine mix $FREQ  $VOL
 114
 115 FREQ="3520-220"
 116 FREQ="28160-13.75" # 9 oct
 117 newname ${FREQ}hz $TGES
 118 $SOX $SOXOPT $NAME synth $LEN sine $MARKFREQ synth square amod 0.1 0 97 94 vol -3 db synth $LEN sine mix $FREQ  $VOL
 119
 120 # CD frequencies
 121 FREQ="22050 11025 5512.5 "
 122 echo "\n--- different frequencies $FREQ"
 123 for f in $FREQ; do
 124     newname "cd${f}hz" $LENGTH
 125 $SOX $SOXOPT $NAME synth $LEN sine $f $FADE $VOL
 126 done
 127
 128
 129 #
 130 # similar frequencies
 131 #
 132 FREQ1="9000"
 133 FREQ2="10000"
 134 echo "\n--- similar frequencies"
 135 newname ${FREQ1}_${FREQ2} $LENGTH
 136 $SOX $SOXOPT $NAME synth $LEN sine $FREQ1 synth sine mix $FREQ2 $FADE $VOL
 137 FREQ1="440"
 138 FREQ2="445"
 139 newname ${FREQ1}_${FREQ2} $LENGTH
 140 $SOX $SOXOPT $NAME synth $LEN sine $FREQ1 synth sine mix $FREQ2 $FADE $VOL
 141
 142 #
 143 #noise
 144 #
 145 echo "\n--- noise"
 146 newname whitenoise $LENGTH
 147 $SOX  $SOXOPT $NAME synth $LEN whitenoise $FADE $VOL
 148 newname pinknoise $LENGTH
 149 $SOX  $SOXOPT $NAME synth $LEN pinknoise  $FADE $VOL
 150 newname brownnoise $LENGTH
 151 $SOX  $SOXOPT $NAME synth $LEN brownnoise $FADE $VOL
 152
 153
 154
 155 #
 156 # square waves
 157 #
 158 FREQ="100 1000 10000"
 159 echo "\n--- square waves at $FREQ"
 160 for f in $FREQ; do
 161   newname ${f}_square $LENGTH
 162 $SOX $SOXOPT $NAME synth $LEN square $f vol -12 db $FADE
 163 done
 164
 165
 166 #
 167 # different volumes at a few frequencies
 168 #
 169 FREQ="100 1000 10000"
 170 DB="0 12 24 36 48 60 72 84 96"
 171 echo "\n--- different volumes $DB db at Frequencies $FREQ"
 172  for f in $FREQ; do
 173    for d in $DB; do
 174     newname ${f}_${d}db $LENGTH
 175     $SOX $SOXOPT $NAME synth $LEN sine $f  vol -$d db $FADE
 176   done
 177 done
 178
 179 # silence
 180 echo "\n-- silence"
 181 newname silence $LENGTH
 182 $SOX $SOXOPT $NAME synth $LEN sine 1000 vol 0
 183
 184
 185
 186
 187 #
 188 # volume sweep at different frequencies
 189 #
 190
 191 FREQ="100 1000 10000"
 192 MARKFREQ=662
 193 DB=100 # 10sec for 10db
 194 echo "\n--- volume sweep 0..100% at Frequencies $FREQ"
 195 for f in $FREQ; do
 196   newname ${f}_dbsweep 200
 197 $SOX $SOXOPT $NAME synth $LEN sine $f synth exp amod 0.005 0 0 50 $DB
 198 done
 199
 200
 201 #
 202 # offset test - a 1K sine with 1Hz square offset of 10%
 203 #
 204 echo "\n--- offset test, 1KHz tone with 1HZ 10% offset"
 205 newname offset $LENGTH
 206 $SOX $SOXOPT $NAME synth $LEN square 1 vol 0.1  synth sine mix 1000 $FADE $VOL
 207 newname offset1 $LENGTH
 208 $SOX $SOXOPT $NAME synth $LEN square 1 0 0 square 1 vol 0.1 $FADE
 209
 210
 211
 212 # effects for different channels
 213 #
 214 # silence on one channel, full power on the other - different frequencies
 215 FREQ="100 1000 10000"
 216 echo "\n--- single channel"
 217 for f in $FREQ; do
 218  newname ${f}leftchan $LENGTH
 219  $SOX $SOXOPT $NAME synth $LEN sine $f synth square amod 0 100 square amod 0   0 $Fade $VOL
 220  newname ${f}rightchan $LENGTH
 221  $SOX $SOXOPT $NAME synth $LEN sine $f synth square amod 0   0 square amod 0 100 $Fade $VOL
 222 done
 223
 224 # phase error between channels
 225 FREQ="100 1000 10000"
 226 # equal phase/ 24 degrees / 90 degrees / 180 degrees
 227 PHASE="25"
 228 echo "\n--- phase error test between channels at $FREQ "
 229 for f in $FREQ; do
 230   for p in $PHASE; do
 231     newname ${f}hz_phase${p} $LENGTH
 232     $SOX $SOXOPT $NAME synth $LEN sine $f 0 0 sine $f 0 $p  $FADE $VOL
 233   done
 234 done
 235
 236 #
 237 #
 238 # end - show statistics
 239 #
 240
 241 echo "\n------------------\ncreated $FC files with prefix $PRE type $OFT"
 242 MIN="$(( $TC / 60 ))"
 243 echo "total length is $TC sec = $MIN min"
 244 #---------
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