Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-22 Thread Theo Verelst
Hi, B. In all honesty, I've looked at some of the supplied materials in the Vivado_hls software, the free web-version has got a number of examples that can work on my very cheap Parallella board. It's the cheapest Zynq board on the marker, which of course might not be the best way to start a

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-16 Thread Theo Verelst
Thanks all for your non-scarce replies to my question and a lot of practical considerations. I suppose mostly it's always nice to know what people are working on. About the reasons for my inquiry: mostly tho whole of the modern day PC as a Complex Instruction Set Computer has become so

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-15 Thread Nigel Redmon
> > but i can't, for the life of me, understand why any hardware product would > need a latency of 17 or 20 ms. that's a factor of 10 longer than the minimum > delay i can account for. > > > r b-j > > > Original Message ---

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-15 Thread David Olofson
On Mon, Aug 15, 2016 at 6:34 AM, robert bristow-johnson wrote: > well, i'm not much of a musician (i wish i were). but i am honestly > surprized reading the magnitude of NoteOn delay and possible jitter. i > *just* cannot imagine why *anything* like 10 ms would be

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-14 Thread robert bristow-johnson
need a latency of 17 or 20 ms. �that's a factor of 10 longer than the minimum delay i can account for. � r b-j Original Message Subject: Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ? From: "Nigel Redmon&qu

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-14 Thread Nigel Redmon
robert bristow-johnson > <r...@audioimagination.com> wrote: > > > so agreeing pretty much with everyone else, here are my $0.02 : > > > > Original Message -------- > Subject: Re: [music-dsp] Anyone think about

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-13 Thread robert bristow-johnson
� so agreeing pretty much with everyone else, here are my $0.02 : Original Message Subject: Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ? From: "David Olofson" <da...@olofson.net> Date: Sat, A

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-13 Thread David Olofson
(General ramble about matters related to this subject.) Linux is certainly not a realtime OS - but it's a very common misconception that it has anything to do with multithreading. It's just that general purpose (and server) operating systems are optimized for throughput, and there are also

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-13 Thread Andy Farnell
I do appreciate both perspectives here, on the one hand it is plainly overkill to talk about sub microsecond accuracy in music control systems. Yet on the other hand, its genuinely the case that many very modern, highly specified PC sequencers still don't sound good because their complexity

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-13 Thread Eden Sherry
You don't need an FPGA for accurate timing resolution -- any microcontroller can do this. Even an Arduino can give you ~ microsecond resolution. You just need to stay away from multi-threaded operating systems; Linux is not a real-time OS. > On Aug 13, 2016, at 09:15, Theo Verelst

Re: [music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-13 Thread Sampo Syreeni
On 2016-08-13, Theo Verelst wrote: For a class of applications where at least you would want sample accurate control messages, [...] That's not about music-dsp, but dsp simple. There's a reason why all synthesis architectures out there make distinction between modulation and audio rate

[music-dsp] Anyone think about using FPGA for Midi/audio sync ?

2016-08-13 Thread Theo Verelst
Hi all, This is one of those things I've been toying in thought about lately (again): everything on PCs and probably phones and pads as well that does input/output, be it in the family of proper thread management or actual devices like Midi and Audio interfaces (and certainly over networks as