search for: demystifi

Dear R users, I have been diligently using the apply() family in order to avoid explicit for loops and speed up computation. However, when I finally inspected the source code for apply, it appears that the core computation is a simple loop as well. What am I missing ? Why the often found advice to use apply() instead of loops and the actually observed empirical speedups on many tasks ? Thanks in

...end (mic/speaker) and the far end (phone line). I have an embedded DSP system with mic and speaker getting 1msec packets containing 8 samples. We can watch the DSP and ISDN clock frames drift and every few minutes we will drop or reuse a packet of samples. According to "Echo Cancellation Demystified" by Alexey Frunze http://www.spiritdsp.com/pdf/article_4.pdf (see section "Incorrect Codec Synchronization") dropping or reusing samples isn't a viable solution since it abruptly changes the echo path delay. If I am dropping/reusing far end (phone line/ISDN) samples before the...

...questions and share their experiences. And throughout the conference we''re all learning more from each other. -------------------- What Will I Learn? -------------------- Get up to speed and stay sharp on these leading edge topics: * Metaprogramming Ruby * Rails and Ajax * ActionPack Demystified * Building View Frameworks * Rake: Building Up Ruby * Rails Reflection * Design Patterns in Ruby * Rails: The Right Tool for the Job? * ActiveRecord Demystified * Ruby Idioms for Rails Programmers * Deploying Rails Applications * Buried Treasure: Hidden Rails Tips * ...and more! We''ll a...

...pulation data as dotted lines with matching colours. densityplot(~ var1 + var2 | cat1 * cat2, data=x, groups=which, panel=panel.superpose, panel.groups = function(x, y,...){ panel.densityplot(x, ...) }) ... gives the same result. I've read "The panel function demystified" section of the book many times and still find the panel function mystifying. Could someone please explain how to do this and also how it works. Thankyou

...amework *Session 7 (Tuesday, 9:00-10:25AM, Bristol 2)* - Hardening the Standard Library - LLVM Greedy Register Allocator – Improving Region Split Decisions *Session 8 (Tuesday, 11:00AM-12:35PM, Bristol 1)* - MIR-Canon: Improving Code Diff Through Canonical Transformation. - Scalar Evolution - Demystified *Session 9 (Tuesday, 11:00AM-12:35PM, Bristol 2)* - Lightning Talks *Session 10 (Tuesday, 1:50-3:25PM, Bristol 1)* - Pointers, Alias & ModRef Analyses - Point-Free Templates *Session 11 (Tuesday, 2:00-3:25PM, Bristol 2)* - Organising benchmarking LLVM-based compiler: Arm experience -...

On Sat, Aug 19, 2023 at 12:25:15PM +0300, Nikolay Aleksandrov wrote: Hi Nik, Thank you so much for reviewing the patch and getting back to me! > IIRC there was no bug, it was a false-positive. The reference is held a bit > longer but then released, so the device is deleted later. > If you reproduced it, is the device later removed or is it really stuck? I ran the reproducer again

Hello List, After demystifying the cause for my /sbin/ifup-local not being executed by network scripts for an Ethernet interface (don't let NetworkManager control it or ifup-local won't be executed)... ... I have a question with hopefully a simple answer: I placed an alias/description on my interface during testing and now I want to remove it. But when I try to remove it, I'm either

Hello LLVM Developers! Last year, the LLVM Foundation sponsored a booth at the Grace Hopper Conference. I had 2 amazing volunteers from the community, David Blaikie and Anna Zaks, help me spread the word about LLVM, compilers, and open source. It was a great experience and we are hoping to repeat this at the upcoming 2018 Grace Hopper conference in Houston, TX on September 26-28. I’m looking

...the far end (phone line). I > have an embedded DSP system with mic and speaker getting 1msec packets > containing 8 samples. We can watch the DSP and ISDN clock frames drift and > every few minutes we will drop or reuse a packet of samples. > > According to "Echo Cancellation Demystified" by Alexey Frunze > http://www.spiritdsp.com/pdf/article_4.pdf (see section "Incorrect Codec > Synchronization") dropping or reusing samples isn't a viable solution since > it abruptly changes the echo path delay. If I am dropping/reusing far end > (phone line/ISDN...

Thoughts please? Thanks, - Mike On Mon, Nov 2, 2015 at 2:40 PM, Mike - st257 <silvertip257 at gmail.com> wrote: > Hello List, > > After demystifying the cause for my /sbin/ifup-local not being executed by > network scripts for an Ethernet interface (don't let NetworkManager control > it or ifup-local won't be executed)... > > ... I have a question with

I''ve noticed quite a few folks asking about training surrounding Ruby on Rails. Marakana provides training as well as free resources surrounding Ruby and Rails: http://marakana.com/s/tags/ruby so hopefully this information is helpful. 5 Day Ruby on Rails training in New York with Marakana expert Renée De Voursney. *SAVE $200 OFF ON YOUR REGISTRATION USING COUPON CODE: ROR200* March 11 -

...onnects "even" clients to "even" servers with o2ib0 on rail0 and to "odd" servers with o2ib3 on rail1. Similarly it connects "odd" clients to "odd" servers with o2ib1 on rail0 and to "even" servers with o2ib2 on rail1. Hope this demystifies things :) Cheers, Eric

...9:00-10:25AM, Bristol 2)* > - Hardening the Standard Library > - LLVM Greedy Register Allocator – Improving Region Split Decisions > > *Session 8 (Tuesday, 11:00AM-12:35PM, Bristol 1)* > - MIR-Canon: Improving Code Diff Through Canonical Transformation. > - Scalar Evolution - Demystified > > *Session 9 (Tuesday, 11:00AM-12:35PM, Bristol 2)* > - Lightning Talks > > *Session 10 (Tuesday, 1:50-3:25PM, Bristol 1)* > - Pointers, Alias & ModRef Analyses > - Point-Free Templates > > *Session 11 (Tuesday, 2:00-3:25PM, Bristol 2)* > - Organising bench...

I downloaded current version of FLAC sources and compiled it with: * GCC 4.8.1 (MSYS from http://xhmikosr.1f0.de/tools/) * Intel C++ Composer XE 2013 update 5 * MSVS 2010 SP1 * MSVS 2012 update 3 (SSSE3 and SSE4.1 code was disabled for all compilers) Stereo 24-bit WAV file was encoded with -8 preset. Encoding time, in seconds: GCC 32-bit: 209 ICC 32-bit: 130 VS10 32-bit: 116 VS12 32-bit: 114

Hi,all I have tested AEC on files, it works well.I have some files,one is echo file, others are echo-added files(an origin file adding echo at different delay,such as 20ms,40ms...120ms,140ms).AEC do wonderfully on those files except echo added at 140ms-delay. But ,when i use AEC in my voip project, it does feebly. Who can give me some hints why caused this.How long can sound be picked up by

...the far end (phone line). I > have an embedded DSP system with mic and speaker getting 1msec packets > containing 8 samples. We can watch the DSP and ISDN clock frames drift and > every few minutes we will drop or reuse a packet of samples. > > According to "Echo Cancellation Demystified" by Alexey Frunze > http://www.spiritdsp.com/pdf/article_4.pdf (see section "Incorrect Codec > Synchronization") dropping or reusing samples isn't a viable solution since > it abruptly changes the echo path delay. If I am dropping/reusing far end > (phone line/ISDN...

Hi Ziqi, On 8/19/23 11:10, Ziqi Zhao wrote: > In the bug reported by Syzbot, certain bridge devices would have a > leaked reference created by race conditions in dev_ioctl, specifically, > under SIOCBRADDIF or SIOCBRDELIF operations. The reference leak would How would it leak a reference, could you elaborate? The reference is always taken and always released after the call. > be

Hi, there, I am working on a project on software control flow checking, which instruments a program to check if the control flow at runtime matches the control flow graph computed at compile-time. My instrumentation process has to make use of control flow information, including as control flow graph and dominator/post-dominator trees, so it is better part of the compiler. On the other

On 8/20/23 01:50, Ziqi Zhao wrote: > On Sat, Aug 19, 2023 at 12:25:15PM +0300, Nikolay Aleksandrov wrote: > Hi Nik, > > Thank you so much for reviewing the patch and getting back to me! > >> IIRC there was no bug, it was a false-positive. The reference is held a bit >> longer but then released, so the device is deleted later. > >> If you reproduced it, is the

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