Search found 232 matches

by male
Sun Sep 22, 2013 7:29 pm
Forum: Linux Music News
Topic: [ANN] Infamous Plugins
Replies: 27
Views: 9272

Re: [ANN] Infamous Plugins

The top figures are more or less meaningless, you need to look at the DSP load figures. Non Mixer will actually give you DSP load numbers for each group (or individual ungrouped strips) which can help you gather this information for LADSPA plugins. I'm not aware of any good way to get the figures f...
by male
Sat Sep 21, 2013 10:30 pm
Forum: Linux Music News
Topic: [ANN] Infamous Plugins
Replies: 27
Views: 9272

Re: [ANN] Infamous Plugins

Where are you getting those CPU figures? Are those JACK DSP load numbers or..? Those are LV2 plugs, CPU load could checked in htop for process. Guitarix is written in FAUST Guitarix is written in C++ It's a plugin host, and provide a framework which allow to easy write and load plugins written in F...
by male
Sat Sep 21, 2013 5:02 am
Forum: Linux Music News
Topic: [ANN] Infamous Plugins
Replies: 27
Views: 9272

Re: [ANN] Infamous Plugins

to give you some examples: CPU~Single core Intel Pentium 4 CPU (-UP-) clocked at 2592.121 Mhz jack with 128 frames/period at 48000Hz GxTubeScreamer 1.3% CPU GxTiltTone (tube overdrive) 1.3% CPU GxAmplifier-X 4.5% CPU GxMuliBandDistortion 2.6% CPU If you interested in integer based dsp's, you may ha...
by male
Fri Sep 20, 2013 10:46 pm
Forum: Linux Music News
Topic: [ANN] Infamous Plugins
Replies: 27
Views: 9272

Re: [ANN] Infamous Plugins

fair enough. Again, it was mostly done with the goal of not performing floating point operations, mostly because I had been unsuccessful in getting guitarix running on my atom machine with acceptable latency. I imagine other distortion plugins would work and sound better on the system, but I grew c...
by male
Fri Sep 20, 2013 5:38 pm
Forum: System Tuning and Configuration
Topic: is this why jack/ffado locking up? IRQ sharing etc
Replies: 7
Views: 4410

Re: is this why jack/ffado locking up? IRQ sharing etc

I been trying to get ardour3 or mixbus to work nicely on a Thinkpad T410 laptop using a focusrite saffire pro 24. It works sometime but its very unreliable, often crashing etc. I'm pretty sure i've covered most bases, built real time kernel, gone through realtimeconfigquickscan, installed rtirq scr...
by male
Thu Sep 19, 2013 11:56 pm
Forum: Linux Music News
Topic: [ANN] Infamous Plugins
Replies: 27
Views: 9272

Re: [ANN] Infamous Plugins

I'd just like to point out the fallacy in assuming that integer is faster than floating point. Without proof, you have nothing. But just as food for thought, which SSE instruction can you use to vectorize integer processing? Some compromises are worth making, but I've never had any problems with a d...
by male
Tue Sep 17, 2013 5:25 pm
Forum: System Tuning and Configuration
Topic: Increasing samplerate for less latency?
Replies: 3
Views: 2534

Re: Increasing samplerate for less latency?

Hi all, plugins and program-to-program audio connections have some latency, often caused by needing filled buffers to be processed. As we learnt 44.1 kHz sample frequency are absolutely fine when we look at the sound quality and frequency range. But increasing it to 96 or 192 kHz would decrease lat...
by male
Wed Sep 11, 2013 11:54 pm
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

I'm not going to answer your question the way you want it answered. It's a simple question. Assuming you can answer it, try doing so in any way other than your usual desperate ad hominems. The term 'double buffering' doesn't have any relevance to this conversation at all Absolutely completely false...
by male
Wed Sep 11, 2013 10:53 pm
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

The only situation with JACK that meets any definition of buffering is the async mode, which is new in JACK2 and entirely optional. Is your answer to the question therefore "jack2 doesn't double buffer except in async mode, and jack1 doesn't all."? Now you want to talk about async mode Yo...
by male
Wed Sep 11, 2013 10:17 pm
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

Each processor instruction does not delay the audio That's not a true statement, is not what i'm specifically talking about vis a vis double buffering, and actually doesn't speak to latency. It all depends upon whether there was room in the dma buffer for new audio data, but output of that data is ...
by male
Wed Sep 11, 2013 9:47 pm
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

Just because a program writes to and reads from some memory locations, does not mean it is 'buffering', 'queuing' or in any other way delaying the data. It does if the data has to be copied out of a secondary buffer into a destination buffer (here the dma buffer), versus just writing directly to th...
by male
Wed Sep 11, 2013 9:04 pm
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

Indeed, I cited the wrong alsa call. It's snd_pcm_hw_params_set_period_size() to set the dma buffer window. And I stand by my assessment that doesn't determine a jack app's latency, because of jack's use of additional (double) buffering. A jack app writes to a secondary buffer, not the mmap'ed buff...
by male
Wed Sep 11, 2013 5:12 am
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

one quick example for this latency confusion of yours is patchfield. https://github.com/google/patchfield it runs a patch graph in a way similar to jack, but for android. Patchfield incurs no latency on top of the systemic latency of the Android audio stack; the audio processing callbacks of all ac...
by male
Wed Sep 11, 2013 4:33 am
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

JACK running at -p 16 Um no, you are confused by the numbers. That doesn't represent the buffer latency of the jack app. That's simply the value jack passes to ALSA's snd_pcm_hw_params_set_rate_near(), to set the soundcard's dma buffer size. See line 437 of the jack source code file linux/alsa/alsa...
by male
Tue Sep 10, 2013 9:38 pm
Forum: Linux Music News
Topic: eDrummer beta
Replies: 78
Views: 26281

Re: eDrummer beta

jack_iodelay is the tool and that's all well and good for measuring the total system latency via JACK. However, Jeff G is just making up latency numbers for eDrummer, so there's no meaningful way to compare the two. With JACK running at -p16 -n3 on my device, I get 6.431ms TOTAL LATENCY. Most of tha...