linuxaudio.org

>  From the long list of answers, I see lots of speculation about Mr.

quoted text
> 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

quoted text
> 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.

quoted text
>

> 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@boosthardware.com wrote:

quoted text
>> 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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>>

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