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wiki:jack_latency_tests [2012/05/30 15:23] – old revision restored 81.57.94.90 | wiki:jack_latency_tests [2014/03/18 11:39] (current) – [Interpretation and Analysis] lgarrido | ||
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* Connecting the output of your audio interface to its input using a patch cable. This can be an analog or a digital loop, depending on the nature of the input/ | * Connecting the output of your audio interface to its input using a patch cable. This can be an analog or a digital loop, depending on the nature of the input/ | ||
- | If you want to measure the latency of a cheap, integrated sound card that only has line-output and mic-input you cannot close the loop with a simple patch cable: both connectors may be mechanically compatible, but electrically they are not designed to work together, so attempting to connect them may harm your audio interface. If you are curious, anyway, you can [[http:// | + | If you want to measure the latency of a cheap, integrated sound card that only has line-output and mic-input you cannot close the loop with a simple patch cable: both connectors may be mechanically compatible, but electrically they are not designed to work together, so attempting to connect them may harm your audio interface. If you are curious, anyway, you can [[http:// |
{{: | {{: | ||
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- It seems that for USB devices JACK // | - It seems that for USB devices JACK // | ||
- The latency reported by JACK is inconsistent. | - The latency reported by JACK is inconsistent. | ||
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+ | The first issue was explained by ALSA developer Clemens Ladisch in [[http:// | ||
Looking closer at these two issues: | Looking closer at these two issues: | ||
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Alas, total latency measurement can not tell which it is. | Alas, total latency measurement can not tell which it is. | ||
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===== References ===== | ===== References ===== | ||