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Re: [LAU] Re: Â Re: Physical distance performance with Linu x ?

by Christoph Kuhr

5 years, 2 months

Re: [LAU] Â Re: Physical distance performance with Linu x ?

by Chris Caudle

On Tue, May 19, 2020 4:47 am, Christoph Kuhr wrote: > Does it matter whether it's only the cable side or the > transition from ethernet to cable? Only to the extent of estimating whether that is the actual range of latency to expect from your house to the upstream router, or whether there is additional latency added on to that as a minimum. > But I can confirm ~35ms on the first hop with my cable access... Is that 35ms one way, or round trip? Is that the value reported from traceroute? I'm looking at that now at my house, but I'm not familiar with how to interpret the numbers, I will need to study the man page a bit. But if the interpretation is as obvious as it seems then it seems like the system in our neighborhood has not bad latency after the latest upgrades. > Where did you find that info? Google search found a document at CableLabs titled "DOCSIS Technologies for Mobile Backhaul" discussing considerations for using cable based network as the connection for small cell phone stations. Similar considerations for conversations as for music, if the latency is too long you begin to speak over each other, conversation timing is awkward, etc. so seemed like a relevant document. https://www.cablelabs.com/docsis-mobile-backhaul-white-paper https://cdn2.hubspot.net/hubfs/1697621/DOCSIS-Technologies-For-Mobile-BackH… best regards, Chris Caudle

5 years, 2 months

Re: [LAU] Re: Physical distance performance with Linux?

by Christoph Kuhr

5 years, 2 months

Sacred Mountains

by Louigi Verona

Hey everyone! Allow me to present this dark soundscape that sends you on a journey to a sacred place, which is both alien and comforting. Somewhere which is the very definition of far away, and yet somehow speaks to us, as if it's our long forgotten home... Bandcamp: https://louigi.bandcamp.com/album/sacred-mountains SoundCloud: https://soundcloud.com/louigiverona/droning291 Louigi Verona https://louigiverona.com/

5 years, 2 months

How to combine microphone audio and music from application to pipe to video conference

by Samir Parikh

Hello, I am trying to combine the audio from my microphone (either built in microphone from my laptop or bluetooth headset) with music playing from Rhythmbox Music Player running on Ubuntu 16.04 and pipe that as the audio input to video conference services such as Jitsi. I don't know much about Linux audio internals and wasn't sure how to do this. Can I do this completely via the operating system using Pulse Audio? Do I need to do something with Jack? Or do I need specialized software such as OBS, Ardour or Reaper? Any help or suggestions on pointing me in the right direction or how to get started would be greatly appreciated. I'm hoping that I can do this completely through software without external hardware such as a mixer or something. Thanks in advance. Samir

5 years, 2 months

[music] a baroque(ish) piano partita

by Jeanette C.

Hey hey, another item off the todo list: https://youtu.be/RwlJyio5tGc I call it partita, though it doesn't really fulfil the requirements, only having five movements for a start and then you could discuss proper classification for each of them. But - except for the prelude - they are all counterpunctual. It was played live on a commerical gigasample piano in LinuxSampler, recorded into Nama, processed in Csound with and HRTF based binaural room/reverb. I hope you enjoy it, feedback is welcome. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * SoundCloud: https://soundcloud.com/jeanette_c * Twitter: https://twitter.com/jeanette_c_s * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c Our imagination Taking us to places We have never been before... <3 (Britney Spears)

5 years, 2 months

Motoku [drone with melody]

by Dave Phillips

Greetings ! https://www.youtube.com/watch?v=BsIfrkBvRSM Another VCV Rack drone piece, this one with a machine-improvised melody. Someone called this one "spooky", I suppose it is a bit dark. Best regards, Dave Phillips

5 years, 2 months

Delta 1010 trouble, almost working

by Kevin Cosgrove

Hi folks, I have a Delta 1010 (not LT) that works on one computer, but not another. Working means that when I use mudita24 (on LinuxMint 19.3) then all of the line inputs work according to the meters, and follow the input signal. Not working means that when I use envy24control (on Fedora 27) then all of the meters are pegged at the top. envy24control is the predecessor of mudita24. envy24control has worked for me in the past, but on a computer that doesn't exist anymore. Each computer has its own PCI card for the 1010. But, the experiment was conducted with the same 1010 taking turns on each computer. Anyone got some debugging ideas for this? I suppose someone's going to tell me to swap the cards between the computers. Yes, I'll do that. I was hoping to find some setting that automatically works on Mint that's not set the same on Fedora. Thanks all!

5 years, 2 months

Recording with TimeMachine

by John Murphy

I've been using TimeMachine to record late night music radio programmes. I'm pretty sure I didn't do anything different, but one recording is significantly quieter than the others and the quiet one shows up as of type 'Unknown (model/x.stl-binary)' in Nemo file manager, whereas the good ones are of type 'Binary (application/octet-stream)'. 'file' says they are all Sony Wave64 RIFF data, WAVE 64 audio, stereo 48k sox (-n stat) seems to show significant differences: Good Quiet Samples read: 676507136 666574336 Length (seconds): 7046.949333 6943.482667 Scaled by: 2147483647.0 2147483647.0 Maximum amplitude: 0.999969 0.999969 Minimum amplitude: -0.920116 -0.999969 Midline amplitude: 0.039927 0.000000 Mean norm: 0.154645 0.051673 Mean amplitude: -0.000065 -0.000022 RMS amplitude: 0.199364 0.066460 Maximum delta: 1.421344 1.754726 Minimum delta: 0.000000 0.000000 Mean delta: 0.090457 0.034210 RMS delta: 0.134921 0.048614 Rough frequency: 5170 5588 Volume adjustment: 1.000 1.000 Any idea what could have gone wrong? What would be the right way to calculate the value to use with sox -v to get the volume level somewhere near that of the 'Good' recording? -- Thanks, John.

5 years, 2 months

Re: [LAU] Physical distance performance with Linux?

by Chris Caudle

On Tue, May 5, 2020 2:43 pm, Christoph Kuhr wrote: > Well, actually using the same ISP in the same city does not > make a difference. My mate and me have both > Unitymedia/Vodafone cable network access. We had the same RTT > as with the other one at another ISP with ADSL. I have been looking for information on the latency associated with the cable modem. So far this is the only information I found, but it is not clear whether this refers just to the latency on the cable side, or also includes the latency of converting from the Ethernet side to the cable side: "The average DOCSIS upstream latency for best effort traffic has been measured to be 11-15 ms with the potential of a significantly higher maximum latency up to 50 ms under medium to heavy channel utilization." So already a significant latency, and potentially high latency variation, before even getting to the first router. It is impressive that you have found a way to play live together with that connection. -- Chris Caudle

5 years, 2 months

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