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sectimage
2012 Feb 20
0
Add noise programmatically after encode
Hi,
I'm currently playing around with Securimage [1], a PHP captcha package.
In addition to showing you a picture it can also play it as audio for you.
At the moment, multiple WAV files are merged together and random
background noise is being added.
The drawback is the size of the audio files. Speex is able to reduce the
size with 85%(!) with ha...