Process audio files using SoX
With the Jasny\Audio\Waveform class you can create a waveform as PNG like:
$waveform = new Waveform($filename, $options);
$waveform->output();Alternatively you can request a set of samples. This can be used to set draw a wavefrom in JavaScript (see waveform.js).
| option | default | unit | description |
|---|---|---|---|
| width | 1800 | pixels | Image width |
| height | 280 | pixels | Image height |
| color | 000000 | hex or rgba | Color of the graph |
| axis | null | hex or rgba | Color of the x axis |
| level | null | The max amplitute (y axis) | |
| offset | null | seconds | Starting point. Negative counts from end |
| duration | null | seconds | Duration of the track of chart |
$track = new Track($filename);
$track->getStats();{
channels: "1",
dc_offset: "0.000016",
min_level: "-0.162134",
max_level: "0.153157",
pk_lev: "-15.80",
rms_lev: "-33.56",
rms_pk: "-24.31",
rms_tr: "-55.44",
crest_factor: "7.72",
flat_factor: "0.00",
pk_count: "2",
bit_depth: "30/32",
length: "1.935601",
scale_max: "1.000000",
window: "0.050",
samples: "42680",
scaled_by: "2147483647.0",
maximum_amplitude: "0.153157",
minimum_amplitude: "-0.162134",
midline_amplitude: "-0.004489",
mean_norm: "0.010709",
mean_amplitude: "0.000016",
rms_amplitude: "0.020990",
maximum_delta: "0.115579",
minimum_delta: "0.000000",
mean_delta: "0.003656",
rms_delta: "0.008325",
rough_frequency: "1391",
volume_adjustment: "6.168",
sample_rate: "22050"
}Convert a track to a different format. Uses avconv (or ffmpeg).
$track = new Track("sometrack.wav");
$track->convert("sometrack.mp3");Combine two tracks. Uses sox --combine.
Available methods
- concatenate
- merge
- mix
- mix-power
- multiply
- sequence
$track = new Track($track1);
$track->combine($method, $track2, $outputFilename);
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