Re: Next question about binary files/combining them, etc.

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Will check out those things, and, yes, know of stack overflow, but not always easiest to find completely useful info on that site...:)

Aside from that, this is more to do with adding things like spoken sound effects to pages, etc. using small sound clips of TTS output using the various voices/synthesizers I have here - have like 20 different voices might want to try use, and the idea is to literally sort of mix short sentences/phrases together, etc., but aside from hardcoding all the different, complete sound clips, the idea would be to sort of mix a somewhat limited dictionary/collection together into various combinations, but, they wouldn't be huge files in terms of file size/bandwidth, etc., and would most likely either load them into soundManager using JQuery, or load them sort of dynamically as BGSound sources for something like a somewhat hidden inline frame, etc.

Thanks again

STay well

Jacob Kruger
Blind Biker
Skype: BlindZA
'...fate had broken his body, but not his spirit...'

----- Original Message ----- From: "Carl Roett" <carlroett@xxxxxxxxx>
To: <php-windows@xxxxxxxxxxxxx>
Sent: Sunday, May 13, 2012 11:55 AM
Subject:  Next question about binary files/combining them, etc.

Depending on what you're building, it could be very easy or extremely
difficult. When posting on mailing lists, you need to give other developers
more information about your application so we can give you useful

Also, for general web-dev questions, sites like can
usually provide better answers, and if you're unfamiliar with google's
site: and inurl:
learning how to use them will make your life immensely easier.

First off, are you doing this in the client (web browser) or the server?
For mixing audio files on the server side, you'd want to use ffMPEG +
whatever PHP interface library you prefer to control it. You would use
either uncompressed WAV files or a compressed format like MP3 depending on
how disk-bound the server is.

For the client side, you would never send the data as a WAV file because it
would use 10 times as much bandwidth as a MP3. Most developers would use
Adobe Flash to load the files and mix them. You could also experiment with
HTML5, but the majority of browsers *currently in use* don't have enough
HTML5 audio support to get the job done. See the Wikipedia article on

Another consideration is the number and size of audio files. If you're
using simple HTML GET requests to fetch your files, you can't use a file
until the *entire* file has been transferred. If you have big files or lots of files, this could be a problem. The usual solution is to use a streaming
server like RED5 or LightHTTPD's progressive download. Look it up on

Saving the output to disk is another consideration. If you have to do this,
the only practical option would be to do it on the server side. Writing
code to decompress an audio file, mix it, and re-compress it in Adobe Flash
or JavaScript would be a massive project.

So, in terms of "simple/doable" ...depending on whether you're trying to
mix sound-effects for a hack-a-thon web game, or whether you're trying to
build an online DJ mixing system're looking at anything from a full
day's work to a 5-year project.



How simple/doable would it be to do something like sort of dynamically
combine multiple .wav files into a single file/output track?

Know that should be doable, but firstly wonder if something like .wav files could be combined into one sort of output file, or if it might be better to
rather trigger their playback using something like JQuery, or something so
they then seemed to be combined, but while still separate..?

Stay well

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