[LAD] Determining Phase

[pshirkey at boosthardware.com]

>  From the long list of answers, I see lots of speculation about Mr.
> Shirkey's question. Some time back he approached me on the work that had
> been done a very long time ago on phase-modulation to achieve panning.
> He never replied to my subsequent information or queries.

Sorry about that. Been a little hectic the past few months.

>  I suspect that
> this question is really all about the phase of the signal being
> transported through any given audio driver, ALSA, JACK or whatever, so
> the analysis is somewhat germane.
>
> I think that a phase demod analyzer might be his attempt to solve his
> real problem. I speculate that Patrick didn't actually ask his real
> question.
>

I'm not sure that I can provide all the information at this stage
anyway... :-)

> So, perhaps any Haas-effect plugin would satisfy Patrick's needs.
>
> Other than that, I'd make a really cool spectrum analyzer that ran the
> Fourier analysis on two channels, correlated their phases then made a
> +/- line vs. frequency for all to see so that the phase of the
> components of the spectrum could be watched for phase relationships.
>
> Suggestions?
>

That would be a useful tool.


--
Patrick Shirkey
Boost Hardware Ltd


> On 06/25/2011 09:23 AM, pshirkey at boosthardware.com wrote:
>> Hi,
>>
>> Can anyone point me to a simple code example for how to determine the
>> phase at a specific time in a waveform?
>>
>> ex. if I have a sample that is 5 seconds long and want to know the phase
>> at 2.5 seconds
>>
>> I'm open to code in any language or a scripted example if such a tool
>> exists. If there is an ui which has that feature I am also interested.
>>
>>
>> Cheers
>>
>> --
>> Patrick Shirkey
>> Boost Hardware Ltd
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