On Wed, 6 Jul 2016 12:13:22 +0200, Kristoffer Gustafsson wrote: >I just sucseeded in what I wanted. hearing my microphone for example. >I didn't think that was possible without latency, but it was! Even a relatively long delay could be inaudible and even if it should be audible for musicians, it could be possible to handle this. Natural musical instruments sometimes have a very long latency, too. The issue caused by latency when using digital audio devices could be sync. Assumed you have a device with analog IOs and ADAT. The ADAT is connected to a device with AD and DA converters. The devices are synced and share the same ALSA settings, but they might use different converters, so the latency might differ minimal, completely inaudible regarding a delay effect, but the phases of a stereo signal recorded or played by each channel using the converters of the other device could have impact to the sound quality, as soon as crosstalk is involved, e.g. by listening using speakers instead of headphones. Another issue are chains of digital gear. If you use 5 analog series-connected guitar stomp boxes, it doesn't matter. If you use 5 digital guitar stomp boxes connected one after the other and each comes with a quasi inaudible latency of 4ms, the 20ms could become a serious issue. To put it in a nutshell, there always is latency, even analog devices at least suffer from the speed of light and in the end everything suffers from the speed of sound. However, latency only becomes an issue, as soon as there is a relation to something. Even a mono microphone without latency caused by recording gear, could suffer from the comb filter effect. This means that e.g. reflections from a wall or from the floor are mixed with the direct sound by the microphone. The reflections have some delay compared to the direct sound. Regards, Ralf ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
