Date: Mon, 3 Oct 2016 00:54:15 +0200 From: Ralf Mardorf <ralf.mardorf@rocketmail.com> To: freebsd-multimedia@freebsd.org Subject: Re: Midi and Music Composition on FreeBSD Message-ID: <20161003005415.03e3edda@archlinux.localdomain> In-Reply-To: <aaa23bce-7eda-81eb-a55e-ac126c62e572@selasky.org> References: <CALM2mEk8UV_0fQOO8Pm3tsRX91x1bCDisFT6sx=_uhTWkhqu8Q@mail.gmail.com> <20161002165348.0600b4d3@archlinux.localdomain> <aaa23bce-7eda-81eb-a55e-ac126c62e572@selasky.org>
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On Sun, 2 Oct 2016 22:21:22 +0200, Hans Petter Selasky wrote: >Most people will not notice or care about delays less than 1-2ms for >MIDI when playing a MIDI piano or MIDI organ. I'm not talking about delay, but MIDI jitter. Indeed as long as you won't record percussive sounds by one external synth after the other, playing those percussive sounds in unison, then 2 ms jitter are tolerable. >BTW: A good organ player should be capable of handling up to several >hundred milliseconds of delay in big rooms when doing live >performances. Delay is sometimes good and realistic. Sound waves are >not like radio waves exactly :-) Latency of a pipe organ might be > 50 ms, however, this already is too much for most poplar musicians. Apart from this, the time required from the sound source to the ears is something to add where ever and whatever you are playing, this is not the latency caused by the used gear. Computer musicians usually require a latency <= 11 ms caused by the gear. I don't know what tendencies FreeBSD has got regarding MIDI jitter, but the audio latency I experienced IIRC was > 100 ms, such a latency caused by the gear makes live playing impossible. A latency of several hundreds milliseconds caused by the gear is grotesque and it's still absurd, if you add the travel time of a large hall, http://www.sengpielaudio.com/calculator-soundpath.htm , let alone that in most cases the musicians are close to the sound source, but even in a church, where the organist is far away from the sound source. Regards, Ralf
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