Latency

Moderator: flatmax

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Michael
Posts: 2
Joined: Mon Apr 03, 2017 9:01 pm

Latency

Post by Michael » Mon Apr 03, 2017 9:03 pm

What is the latency of audio input and output in this system?

flatmax
Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Re: Latency

Post by flatmax » Tue Apr 04, 2017 10:10 am

Hi Michael,

I think it is possible to achieve around 1.5 ms latency on the input and less on the output with the product.

thanks
Matt
Check out our audiophile quality crossovers : https://bit.ly/2kb1nzZ
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Michael
Posts: 2
Joined: Mon Apr 03, 2017 9:01 pm

Re: Latency

Post by Michael » Tue Apr 04, 2017 5:15 pm

Hi Matt,

Thank you.
Could you please clarify whether this time is estimation only or it is based on some test results.
Does the latency depend on the sample rate?
Are input and output streams synchronized?

Michael

flatmax
Posts: 609
Joined: Sat Jul 23, 2016 11:39 pm

Re: Latency

Post by flatmax » Tue Apr 04, 2017 8:21 pm

I used the alsa latency test executable called "latency". You can see more about it here .

It is likely that latency depends on sample rate in a real system, because if you have to process more data per second, then you will chew more computation resources and require bigger blocks to make it more efficient !

The streams are synchronised when you are not using asynchronous executables. For example if you are using and executable which is full duplex, then it will open the input and output devices together. However there is still the latency of playing and recording, which means that if you played a tone out and recorded it back in, there would be some offset between the input and output signals.

thanks
Matt
Check out our audiophile quality crossovers : https://bit.ly/2kb1nzZ
Please review the Zero sound card on Amazon USA : https://www.amazon.com/dp/B075V1VNDD
---
Check out our new forum on github : https://github.com/Audio-Injector

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