Linux-audio-user

linux-audio-user@lists.linuxaudio.org

2 participants
20641 discussions

How to analyse and "optimise" a frequency spectrum? (digitising tapes)

by Jeanette C.

Hey hey, I have digitised a few last tapes. The sound isn't too bad, but all tapes appear to be a little too bass heavy. Since I only work in the terminal I approach the issue with Csound that provides a lot of tools. All kinds of filters, rms/peak metres, an lufs metre and more. First: did I miss an obvious commandline tool that would produce a reasonable solution for that? There are two main issues that I try to improve halfway automatically. 1. Sometimes the stereo balance is a little wrong with one channel being slightly louder than the other. 2. Imrpoving the frequency spectrum, flattening it a little bit. For 1. I have started by taking the file's peak of both channels seperately and simply multiplying them so the peaks match. Over a whole tape side this should be approximately the same. Or should I go with a different measurement? lufs integrated loudness, momentary or short term maximums? For the second issue, I am unsure. I have split the audio into frequency bands using octaves, more or less. So the first band goes up to 100Hz, the next to 200, then 400, 800 and so on. I have used Csound's tone and atone filters: atone highpass filter: https://csound.com/manual/atone.html and the matching tone lowpass filter: https://csound.com/manual/tone.html Then on each band for each channel I run the lufs metre, storing the maximum momentary and short term values and the integrated loudness. Though I wonder: are the frequency ranges and type of filter reasonable? If so how would I approximate a reasonably flat spectrum? Which values to compare to what? I mean: what kind of measurement to use and should I compare adjecent bands and extrapolate fitting values from that or compare one frequency band's measurement to the same measurement on the unprocessed full-band audio? Any hints and practical suggestions are very welcome. Thank you and best wishes, jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c I'm reaching out to you To find that you're not there <3 (Britney Spears)

2 years, 5 months

Yoshimi V 2.2.3 now released

by Will Godfrey

The Formant editor window has been made a bit more user friendly. The Command line can now use Yoshimi's Copy/Paste feature and stored presets. There are also minor bugfixes and general updates. Full details are in /doc/Yoshimi_2.2.3_features.txt Yoshimi source code is available from either: https://sourceforge.net/projects/yoshimi Or: https://github.com/Yoshimi/yoshimi Full build instructions are in 'INSTALL'. Our list archive is at: https://www.freelists.org/archive/yoshimi To post, email to: yoshimi(a)freelists.org -- Will J Godfrey {apparently now an 'elderly'}

2 years, 5 months

update (again)

by Fons Adriaensen

Hello all, Just hours after the release of zita-resampler-1.10.0 yesterday, a new bug was reported, not in the library but in the zresample application. This is now fixed in 1.10.1 Ciao, -- FA

2 years, 5 months

updates

by Fons Adriaensen

Hello all, Updates now available on <http://kokkinizita.linuxaudio.org/linuxaudio/downloads/index.html> ebumeter-0.5.1.tar.xz zita-resampler-1.10.0.tar.xz Ciao, -- FA

2 years, 5 months

Linux Dante Controller Alternative

by Brandon Hale

Hello all, I wanted to turn your attention to a really cool project I found while browsing the internet: Network-audio-controller <https://github.com/chris-ritsen/network-audio-controller>. It is a CLI-based alternative to dante controller that I recently got to try out at my workplace where almost every speaker array we have is implemented with dante. With this python program, I was able to view other dante devices on my work's network. It can also apparently make connections as well, though I didn't have success with that with my couple of minutes of testing. As one of the only Linux users at my workplace, it was really cool to set my computers NIC to link-local, join the network, and view the audio devices and its connections. Anyways, check it out if you're interested and know you can at least view your dante network and connections if you are a Linux user. Thank you very much for your time, Brandon Hale

2 years, 5 months

[music] two soundtrack pieces

by Jeanette C.

Hey hey, it's two for the price of one today. :) First here is Fog and white roses: https://youtu.be/ilWhMlOX9fo OGG version: https://www.dropbox.com/s/st7pw4gdzy1cpju/fog_and_white_roses.ogg A little piece of incidental music I wrote for the telling of a fairytale (the Chinese nightingale). And here is sea of pain: https://youtu.be/nzAV4ySWOdg OGG version: https://www.dropbox.com/s/1p8go50em55pia9/sea_of_despair.ogg This soundtrack-like piece I wrote on a really bad day to get the sadness out of my system. This one is almost entirely done in Yoshimi, with a very subtle layer of VPO3 strings in LinuxSampler. Both pieces are quite different, in that they are straightforward and painted in broad strokes. Raw emotion rather than involved polyphony. I hope you enjoy them. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c 'Cause I don't have to feel the heat of the sun To know it's shining on me every day <3 (Britney Spears)

2 years, 5 months

Just wondering if my subscription to LAU is still alive

by David W. Jones

Haven't seen anything since mid-December 2022. Thanks for the expertise. --- David W. Jones gnome(a)hawaii.rr.com exploring the landscape of god http://dancingtreefrog.com Sent from my Android device with F/LOSS K-9 Mail.

2 years, 5 months

Resetting USB MIDI cables

by Jeanette C.

Hey hey, I have an older USB to MIDI adapter cable, a UA0037 (probably LogiLink, sold as Conrad Electronic). The manual does not suggest any SysEx capabilitiies to reset/clear it. Sometimes it gets problems with SysEx transfer to/from the connected MIDI device and will no longer pass SysEx data. The cable/adapter will not directly react to a device inquiry "F0 7E 7F 06 01 F7" nor does a simple dump solve it: amidi -p XXX --dump Is there perhaps a trick to flush or reset such adapters? I can pull the cable from the USB port and plug it in again, yet it's at the back of the computer underneath the desk which is cumbersome and due to many USB devices being connected through HUBs there is no other place to plug it in. Best wishes and thanks for any hints, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c You should never try to change me I can be nobody else And I like the way I am <3 (Britney Spears)

2 years, 5 months

Re: [music] I Lean to You (bigband)

by Will Godfrey

On Sun, 29 Jan 2023 16:13:36 +0100 (CET) "Jeanette C." <julien(a)mail.upb.de> wrote: >Hey hey, >I'd like to share my latest piece: >https://youtu.be/q-MrtHBBUa8 >OGG version: >https://www.dropbox.com/s/q7hkmffdpt9c7tp/i_lean_to_you.ogg >This is a big band, somewhat jazzy ballad, with a somewhat energetic middle >section. Otherwise it is very late night compatible. > >This was the first time I tried my hadn at a proper big band arrangement. >Well, I only had a brass sextet of two trumpets, two French horns, one >trombone and one tuba. Add piano, electric bass and (mostly) sparse drums. > >Instruments used: DrumGizmo and LinuxSampler. The brass and piano are >commercial libraries, both by Sampletekk (BOB Orchestral Brass and Yamaha 7CG >piano), the bass is a free Rickenbecker SFZ, I think it is part of the No >Budge Band (NBB) collection. > >I hope you enjoy and can relax with it! > >Best wishes, > >Jeanette > A wasn't keen on this at first, but about half-way through it really woke up. -- Will J Godfrey {apparently now an 'elderly'} https://willgodfrey.bandcamp.com/ http://yoshimi.github.io Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

2 years, 5 months

IEM Music Residency Programs 2023 - Call for Applications

by IOhannes m zmoelnig

IEM Music Residency Programs 2023 - Call for Applications University of Music and Performing Arts Graz (KUG) https://iem.at/ (please distribute) The IEM – Institute of Electronic Music and Acoustics – in Graz, Austria is happy to announce its calls for its 2023 residency program. You can apply for two different residencies: the Artistic Residency (1) and the Artistic Research Residency (2). (1) Artistic Residency The residency is aimed at individuals wishing to pursue projects in performance, composition, installation, sound art, development of tools for art production, and related areas. Individuals are asked to submit a project proposal that is related to the following research fields of the IEM: * Algorithmic Composition * Algorithmic Experimentation * Audio-Visuality * Dynamical Systems * Experimental Game Design * Live Coding * Sonic Interaction Design * Spatialization/higher-order Ambisonics * Standard and non-standard Sound Synthesis Duration of residency: 3 months Start date: June 1st 2023 (negotiable) APPLICATION DEADLINE: February 28th 2023 Please reply to the official call by KUG for a University Assistantship (in German and English): <https://www.kug.ac.at/fileadmin/01_Kunstuniversitaet_Graz/05_News/Mitteilun…> (2) Artistic Research Residency The residency is aimed at individuals wishing to pursue an artistic research project in close collaboration with an IEM staff member and related to the research fields of the IEM (see list above under (1)). Duration of residency: 3 months Start date: September 1st 2023 (negotiable) APPLICATION DEADLINE: April 30th 2023 Please reply to the official call by KUG for a University Assistantship (in German and English): <https://www.kug.ac.at/fileadmin/01_Kunstuniversitaet_Graz/05_News/Mitteilun…> The Institute: The Institute of Electronic Music and Acoustics is a department of the University of Music and Performing Arts Graz founded in 1965. It is a leading institution in its field, with more than 35 staff members of researchers and artists. IEM offers education to students in composition and computer music, sound engineering, sound design, contemporary music performance, and musicology. It is well connected to the University of Technology, the University of Graz as well as to the University of Applied Sciences Joanneum through three joint study programs. The project results will be released through the Institute's own Open CUBE and Signale concert series, as well as through various collaborations with international artists and institutions. What we expect from applicants: - A project proposal that adds new perspectives to the Institute's activities and resonates well with the interests of IEM. - Willingness to work on-site in Graz for the most part of the Residency. - Willingness to exchange and share ideas, knowledge and results with IEM staff members and students, and engage in scholarly discussions. - The ability to work independently within the Institute. - A dissemination strategy as part of the project proposal that ensures the publication of the work, or documentation thereof, in a suitable format. This could be achieved for example through the release of media, journal or conference publication, a project website, or other means that help to preserve the knowledge gained through the Residency and make it available to the public. - A public presentation as e.g. a concert or installation, which presents the results of the Residency. What we offer: - 24/7 access to the facilities of the IEM. - Exchange with competent and experienced staff members. - A desk in a shared office space for the entire period and access to studios including the CUBE [1], according to availability. - Extensive access to the studios of the IEM during the period from July 1st until end of September. - access to the IKOsahedron loudspeaker [2] - access to the “Autoklavierspieler” [3] - infrared motion tracking systems - Regular possibilities for contact and exchange with peers from similar or other disciplines. - Concert and presentation facilities (CUBE 30 channel loudspeaker concert space). What we cannot offer to the successful applicant: - We can not provide any housing. - We also cannot provide continuous assistance and support, although the staff is generally willing to help where possible. - We can not host artist duos or groups, because of spatial limitations. - We can not offer any additional financial support for travel or material expenses. Feel free to contact residency(a)iem.at if you have any questions. [1] The Cube has a 30-channel loudspeaker system [2] https://iko.sonible.com/ [3] https://algo.mur.at/projects/autoklavierspieler

2 years, 6 months

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

Linux-audio-user