Re: [music-dsp] Android related audio group / mailing list?

You may be seeing variations in CPU clock speed. That can lead to some puzzling benchmark results. I gave more detail in my answer on the Android list. By the way, one way to prevent overly aggressive optimization is to generate a check some of the results of your benchmark and then print that num

Re: [music-dsp] Android related audio group / mailing list?

Laurent, I have marked the array as volatile to force compile to bypass those kind of optimisations and the results were different. I actually had to reduce the amount of iterations to only 1 otherwise it would take too long to complete. I had results of ~130ms for the standard settings a

Re: [music-dsp] Android related audio group / mailing list?

Laurent, Thanks for your reply. In fact I haven’t even initialised the arrays. I will try a more complex example and post the results. Thanks, Regards, Nuno > On 05 Jun 2016, at 19:21, Laurent de Soras wrote: > > Nuno Santos wrote: >> >> I’m struggling with performance questions on And

Re: [music-dsp] Android related audio group / mailing list?

Nuno Santos wrote: I’m struggling with performance questions on Android. https://groups.google.com/forum/#!topic/andraudio/zuXnnmZyePk Your results tell that your program computes 10^9 operations in a few dozen microseconds. There is definitely something wrong here because even the most advanc

Re: [music-dsp] Android related audio group / mailing list?

Hi Phil, I’m struggling with performance questions on Android. I have posted this question on the Android google group: https://groups.google.com/forum/#!topic/andraudio/zuXnnmZyePk If you could give a look and tell me your though

Re: [music-dsp] Android related audio group / mailing list?

On Sat, May 28, 2016 at 4:04 AM, grh wrote: > > Does anyone have contacts to google audio developers? Would be great if > they could join such a discussion group as well! I work for Google on Android Audio. My focus is MIDI, AudioTrack, latency and performance. Also Android TV support. I'll try

Re: [music-dsp] Android related audio group / mailing list?

Hallo again! Thanks for all the suggestions and for already starting the discussion - I would have many questions as well ;) Just as a quick summary, the two main suggestions were the JUCE forum: https://forum.juce.com/c/android And the andraudio group: https://groups.google.com/forum/#!forum/and

Re: [music-dsp] Android related audio group / mailing list?

Hi Nuno, My colleague Fabian, who's not on the DSP list, has written a response to your question. I'm not sure how relevant this topic is to this list, but we'd be happy to take this offline, or to continue on the JUCE forum. The following is from Fabian: We've been working closely with the Andr

Re: [music-dsp] Android related audio group / mailing list?

Hi Nuno, Thanks for this opportunity to allow me to help you understand audio latency on Android better. Contributions to total round-trip audio latency on Android are best thought as stemming from two parts. A) Android service space (AudioFlinger etc) ← developers and middleware cannot affect

Re: [music-dsp] Android related audio group / mailing list?

Hello Nunos, I just joined https://groups.google.com/forum/#!forum/andraudio I think that is a good place for discussion. If you repost your questions there then I will try to answer them. Phil Burk On Wed, May 25, 2016 at 6:15 AM, Nuno Santos wrote: > I have been testing DRC in 2 different And

Re: [music-dsp] Android related audio group / mailing list?

Patrick, Now that I had the chance of using Superpowered all I can say is that it doesn’t make miracles. It will not provide lower latency than OpenSL already gives. Android latency problem is much OS and device dependent. Looking forward to understand what is new and if it will bring any speci

Re: [music-dsp] Android related audio group / mailing list?

Speaking of Android, we just released a fully configuarable and performant USB Audio and MIDI library for Android. It’s the Android equivalent of iOS Core Audio and Core MIDI for USB devices. http://superpowered.com/android-usb-audio-android-midi The Superpowered USB Audio and MIDI SDK provides s

Re: [music-dsp] Android related audio group / mailing list?

code, but I never used it stand-alone (only as part of Supercollider) Best,Giulio From: Nuno Santos To: music-dsp@music.columbia.edu Sent: Wednesday, 25 May 2016, 14:15 Subject: Re: [music-dsp] Android related audio group / mailing list? I have been testing DRC in 2 different

Re: [music-dsp] Android related audio group / mailing list?

refuse to optimize them).   From: Nuno Santos To: music-dsp@music.columbia.edu Sent: Wednesday, 25 May 2016, 14:15 Subject: Re: [music-dsp] Android related audio group / mailing list? I have been testing DRC in 2 different Android devices: Nexus 9 (48000/128 buffer size) phone, Bq Aqu

Re: [music-dsp] Android related audio group / mailing list?

I have been testing DRC in 2 different Android devices: Nexus 9 (48000/128 buffer size) phone, Bq Aquaris M5 phone (48000/912) buffer size Nexus 9 is a beast. I was able to run DRC with full polyphony (8 voices) without any kind of glitch. The fake touches hack was essential to make this happen

Re: [music-dsp] Android related audio group / mailing list?

Hi, I do not see drives in the andraudio group since he migrated to [1] Some years ago I tried see how some of my codes works in android, I wrote effects to work in real-time (automatic pitch correction, time stretch, pitch shifters in time domain and frequency domain) and I get a lot of glitches

Re: [music-dsp] Android related audio group / mailing list?

At JUCE / ROLI we've been working with Google for over a year to optimize audio latency, throttle, etc for cross platform apps. Our app is featured also in the Youtube video from Google IO, and it runs on some devices with performances comparable to iOS. Whether you are using JUCE or not, you

Re: [music-dsp] Android related audio group / mailing list?

cian introduced as "someone that cares all about numbers"- a calibre (22:17)- table of latency results which does not have any sense (23:12) Best,Giulio From: grh To: music-dsp@music.columbia.edu Sent: Wednesday, 25 May 2016, 11:57 Subject: Re: [music-dsp] Android related audio g

Re: [music-dsp] Android related audio group / mailing list?

Hallo! Thanks Nuno, it was a great demo ;) LG Georg On 2016-05-25 12:46, Nuno Santos wrote: > Hi George, > > I would be interested in such a community as well. Specially regarding > audio performance. We have recently released DRC (one of the apps that > has been featured on Google I/O Android

Re: [music-dsp] Android related audio group / mailing list?

Hi George, I would be interested in such a community as well. Specially regarding audio performance. We have recently released DRC (one of the apps that has been featured on Google I/O Android High Performance Audio) and we are mostly interested in squeezing performance out of it. It is incredi

[music-dsp] Android related audio group / mailing list?

Hallo music-dsp list! Sorry for being off topic, but does someone know an active discussion group / mailing list about android audio? (There is quite a lot of progress lately, see for example [1]) 5 years ago a list was announced here [2], which does not seem to be active anymore ... We just crea