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Re: Looking for iphone developer to solve LTC signal processing problem
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Re: Looking for iphone developer to solve LTC signal processing problem


  • Subject: Re: Looking for iphone developer to solve LTC signal processing problem
  • From: Steven Winston <email@hidden>
  • Date: Thu, 3 Sep 2009 15:07:33 -0700

Howdy Chris,

Can you be more specific with your problem?  Oh and save your money,
If I can help by answering questions I'm delighted to.  How are you
capturing the audio input would be a great place to start?  If you can
send code, then do so.

Thanks,
Steve

On Thu, Sep 3, 2009 at 2:54 PM, Chris Beeson<email@hidden> wrote:
> Hi,
>
> I recently commissioned the development of a small C library to decode an
> LTC SMTPE audio stream.
>
> The code works perfectly when fed with WAV files using the libraries own WAV
> import functions.
>
> The problem is that it does not work with captured audio using the iPhone
> Audio Services API in a real-time environment - ie. capture the audio then
> feed the pointer to the library.
>
> But it does work if I capture the audio signal using the API, save it as a
> WAV file and then import using the commissioned C Library WAV import
> function.
>
> There must be a difference in the way the data is stored in memory but
> cannot work out what....
>
> I know that my C library requires floats (which is not supported by the
> iPhone AS API) so there is a really clunky by of code to convert the
> samples, but apart from that I'm stuck...
>
> To be honest though, this project is completlely out of the scope of my
> knowledge and I really need an expert to fix my problem...
>
> I am only a small single developer but some funds could be found if you are
> willing to undertake the task.
>
> All I'm looking for is a solution....   nothing more.....
>
> Thanks in advance
>
> Chris
>
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References: 
 >Looking for iphone developer to solve LTC signal processing problem (From: Chris Beeson <email@hidden>)

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