Subject: Re: [linux-audio-dev] RFC: API for audio across network - inter-host audio routing
From: Joern Nettingsmeier (nettings_AT_folkwang-hochschule.de)
Date: Fri Jun 14 2002 - 14:18:33 EEST
John Lazzaro wrote:
>
> > You certainly can't play an instrument with 10ms latency.
>
> See:
>
> http://ccrma-www.stanford.edu/groups/soundwire/delay_p.html
> http://www-ccrma.stanford.edu/groups/soundwire/delay.html
> http://www-ccrma.stanford.edu/groups/soundwire/WAN_aug17.html
if i read this correctly, it's about latency wrt _another_player_. all
trained ensemble musicians are easily able to compensate for the rather
long delays that occur on normal stages. not *hearing_oneself_in_time*
is a completely different thing. if i try to groove on a softsynth, 10
ms response time feels ugly on the verge of unusable (provided my
calculations and measurements on latency are correct), and i'm not even
very good.
let a drummer play an electronic trigger that does not make any sound by
itself, and feed him a triggered synth drum over his headphones with 5
ms latency, and he will kill you. his/her body control will be off to
hell in a handbasket if the actual motion and the sound are not totally
in sync, which means the drumtrack will be garbage and the drummer will
suffer from increased muscular strain.
as some people mentioned, some instruments have a long "natural"
latency, so the players have learnt to compensate, and the latency is
part of the "feel". but then, this is not true for most percussive or
plucked instruments.
i need to read up on the haas effect, but i doubt it is a constant. i
bet you that a bebop drummer swinging at 380 bpm will develop a much
higher aural time resolution than joe average bathroom singer.
if we are talking pro audio, we must deliver a good "feel" for the
really badass musicians, not just for the guys who step-sequence their
stuff with one finger on the keyboard. noi.
jörn
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