First, Install sndfile-tools from: mega-nerd.com
1 2 3 4 5 6 7 8 9 10 11 | $ cd /usr/src/ $ sudo wget http://www.mega-nerd.com/libsndfile/files/sndfile-tools-1.03.tar.gz $ sudo apt-get install sndfile-tools libsndfile1 libsndfile1-dev libfftw3-3 libfftw3-dev libjack-dev libcairo2 libcairo2-dev $ sudo tar xvzf sndfile-tools-1.03.tar.gz $ sudo cd sndfile-tools-1.03 $ sudo ./configure $ sudo make $ sudo make check $ sudo make install |
Then Download and install sndfile-waveform from: rg42.org
1 2 3 4 5 6 7 8 9 | $ sudo tar xvzf sndfile-tools-60a0598.tar.gz $ sudo apt-get install libsamplerate0 libsamplerate0-dev $ sudo cd sndfile-tools-60a0598 $ sudo ./autogen.sh $ sudo make $ sudo make check $ sudo make install |
Example-1:
1 2 3 | sndfile-waveform example0.wav example0.png |
Example-2:
1 2 3 | sndfile-waveform --border -g 800x400 --logscale --timecode 10 --channel -1 example1.wav example1.png |
Example-3:
1 2 3 | sndfile-waveform -b -g 800x200 --rectified -t 25 -T 172800000 example2.wav example2.png |
Man Page:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | sndfile-waveform - waveform image generator Creates a PNG image depicting the wave-form of an audio file. Peak-signal and RMS values can be displayed in the same plot, where the horizontal axis always represents time. The vertical axis can be plotted logarithmically, and the signal can optionally be rectified. The Time-axis annotation unit is either seconds or timecode using broadcast-wave time reference meta-data. The tool can plot individual channels, reduce the file to mono, or plot all channels in vertically arrangement. Colours (ARGB) and image- or waveform geometry can be freely specified. Usage : sndfile-waveform [OPTION] Options : -A, --textcolour specify text and border colour ; default 0xffffffff all colours as hexadecimal AA RR GG BB values -b, --border display a border with annotations -B, --background specify background colour ; default 0x8099999f -c, --channel choose channel (s) to plot, 0 : merge to mono ; < 0 : render all channels vertically separated ; > 0 : render only specified channel. (default : 0) -C, --centerline set colour of zero/center line (default 0x4cffffff) -F, --foreground specify background colour ; default 0xff333333 -g x, --geometry x specify the size of the image to create default : 800x192 -G, --borderbg specify border/annotation background colour ; default 0xb3ffffff -h, --help display this help and exit -l, --logscale use logarithmic scale --no-peak only draw RMS signal using foreground colour --no-rms only draw signal peaks (exclusive with --no-peak). -r, --rectified rectify waveform -R, --rmscolour specify background colour ; default 0xffb3b3b3 -s, --gainscale zoom into y-axis, map max signal to height. -S, --separator vertically separate channels by N pixels (default : 12) - only used with -c -1 -t [/], --timecode [/] use timecode instead of seconds for x-axis ; The numerator must be set, the denominator defaults to 1 if omitted. -T override the BWF time-reference (if any) ; the offset is specified in audio-frames and only used with timecode (-t) annotation. -V, --version output version information and exit -W, --wavesize given geometry applies to the plain wave-form. image height depends on number of channels. border-sizes are added to width and height. |
