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PHP wave form image generation

I would like a function that will read in a 16 or 24 bit stereo wav file (44100khz), between 3 and 10 minutes long, and generate a mono waveform image similar to those used on [url removed, login to view] or zippyshare.com.

The image size should be flexible, but will be approximately 600 x 80 pixels.

I've done some reading on this and apparently the image generation can take a long time to process, therefore the function should create the image as quickly as possible, and there it will be necessary to investigate ways to skip values within the wave file to read approximate values - there are a number of articles on the web explaining this.

In addition, it would be very useful to obtain a value from the file representing maximum loudness - the basic idea being to tell if the wave has been mastered to obtain optimum volume or [url removed, login to view] should be calculated using averages over 10 seconds section of the file i.e. find the rms of the loudest 10 second section of the file. I'm not an expert on this stuff but I know this should be possible with a bit of investigation.

Please message me if you have any further questions. Thanks.

Kĩ năng: PHP

Xem nhiều hơn: wav form php, php wav image, php wave image, php image wave, waveform image generation, php create function, stereo, soundcloud, optimum time, mono, investigation, image process, idea form, find php expert, wav mono stereo, wav file read, form image, web mono, read wav file, web function image

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( 11 nhận xét ) Vancouver, Canada

ID dự án: #1453363

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Hi there, This project sounds very interesting. I'm particularly keen to work on the maximum volume algorithm you referred to. I already have a pretty idea of how to do the image generation based on cubic splines Thêm

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