[PD] udoo board sound issues
David Medine
dmedine at ucsd.edu
Sun Mar 16 23:31:10 CET 2014
BTW, not to overstate the obvious, but...
A good way to measure total latency is with an oscilloscope. Hook up one
probe to the mic, the other probe to a wire coming out of an output on
your device. Then make a patch that sends the sound straight through, eg:
[dac~]
|
[adc~]
If you stimulate the mic with an impulse of some sort, you should see a
spike and then the same spike a few (or perhaps more than a few) ms
later on the scope. You can be very exact about this by using the scope
correctly.
For a bonus, subtract the latency on Pd (one of the settings in audio
settings) from this to find out the latency of everything in your signal
chain that is not due to Pd.
-David
On 03/16/2014 11:37 AM, Jonathan Wilkes wrote:
> On 03/16/2014 05:33 AM, Simon Iten wrote:
>
> [...]
>
>> Any digital instrument also has latencies. Basically it is a matter
>> of playing the instrument you are using.
>
> How are you measuring the latency?
>
> -Jonathan
>
>>
>>
>> Simon
>>
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