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#acoustics — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #acoustics, aggregated by home.social.

  1. Dear engineers, I know there's something called an acoustic lens, but so far what I could find points to lenses that are used to spread out or disperse sound from a speaker.

    I've seen someone demonstrate that just a regular party balloon is in itself an acoustic lens.

    I'm wondering if there has been any research in developing acoustic telescop... telephone.. darn it, the words don't want to cooperate!

    Sonic zoom - can we?

    #sound #engineering #acoustics #lens

  2. Dear engineers, I know there's something called an acoustic lens, but so far what I could find points to lenses that are used to spread out or disperse sound from a speaker.

    I've seen someone demonstrate that just a regular party balloon is in itself an acoustic lens.

    I'm wondering if there has been any research in developing acoustic telescop... telephone.. darn it, the words don't want to cooperate!

    Sonic zoom - can we?

    #sound #engineering #acoustics #lens

  3. Im Oktober organisieren wir einen kleinen Löt und Fieldrecording Workshop in Bad Schandau.
    Ich freu mich schon drauf, muss mich aber ordentlich drauf vorbereiten, weil lange nicht mehr gemacht und gebaut.

    landschafftsound.org/2026-10-2

    #sound #fieldrecording #nature #workshop #underwater #acoustics #hydrophone #elbe #badschandau

  4. Im Oktober organisieren wir einen kleinen Löt und Fieldrecording Workshop in Bad Schandau.
    Ich freu mich schon drauf, muss mich aber ordentlich drauf vorbereiten, weil lange nicht mehr gemacht und gebaut.

    landschafftsound.org/2026-10-2

    #sound #fieldrecording #nature #workshop #underwater #acoustics #hydrophone #elbe #badschandau

  5. Im Oktober organisieren wir einen kleinen Löt und Fieldrecording Workshop in Bad Schandau.
    Ich freu mich schon drauf, muss mich aber ordentlich drauf vorbereiten, weil lange nicht mehr gemacht und gebaut.

    landschafftsound.org/2026-10-2

    #sound #fieldrecording #nature #workshop #underwater #acoustics #hydrophone #elbe #badschandau

  6. Im Oktober organisieren wir einen kleinen Löt und Fieldrecording Workshop in Bad Schandau.
    Ich freu mich schon drauf, muss mich aber ordentlich drauf vorbereiten, weil lange nicht mehr gemacht und gebaut.

    landschafftsound.org/2026-10-2

    #sound #fieldrecording #nature #workshop #underwater #acoustics #hydrophone #elbe #badschandau

  7. Im Oktober organisieren wir einen kleinen Löt und Fieldrecording Workshop in Bad Schandau.
    Ich freu mich schon drauf, muss mich aber ordentlich drauf vorbereiten, weil lange nicht mehr gemacht und gebaut.

    landschafftsound.org/2026-10-2

    #sound #fieldrecording #nature #workshop #underwater #acoustics #hydrophone #elbe #badschandau

  8. Tom’s Hardware: Acoustic mapping app uses thousands of networked old Android phones to hunt Shahed drones — crowd-sourced microphone network spots small, low-RCS military targets. “A Lithuanian startup developed an Android app that lets verified users monitor the general area for the acoustic signature of Shahed-type drones used by Russia to strike targets and report their approximate […]

    https://rbfirehose.com/2026/06/22/toms-hardware-acoustic-mapping-app-uses-thousands-of-networked-old-android-phones-to-hunt-shahed-drones-crowd-sourced-microphone-network-spots-small-low-rcs-military-targets/
  9. Tom’s Hardware: Acoustic mapping app uses thousands of networked old Android phones to hunt Shahed drones — crowd-sourced microphone network spots small, low-RCS military targets. “A Lithuanian startup developed an Android app that lets verified users monitor the general area for the acoustic signature of Shahed-type drones used by Russia to strike targets and report their approximate […]

    https://rbfirehose.com/2026/06/22/toms-hardware-acoustic-mapping-app-uses-thousands-of-networked-old-android-phones-to-hunt-shahed-drones-crowd-sourced-microphone-network-spots-small-low-rcs-military-targets/
  10. 💁🏻‍♀️ TIL: 👂🔊 For decades, people worldwide have reported hearing a mysterious low-frequency drone, often described as a distant idling diesel engine.

    Researchers studied 28 people who regularly hear this #sound, known as The Hum. Their conclusion published in PLOS ONE: It may be low-frequency #tinnitus – the #brain creating the perception of a sound that isn’t there.

    👉 scitechdaily.com/scientists-ma

    #science #hearing #ears #acoustics #biology #physics #research #norway #germany #health

  11. 💁🏻‍♀️ TIL: 👂🔊 For decades, people worldwide have reported hearing a mysterious low-frequency drone, often described as a distant idling diesel engine.

    Researchers studied 28 people who regularly hear this #sound, known as The Hum. Their conclusion published in PLOS ONE: It may be low-frequency #tinnitus – the #brain creating the perception of a sound that isn’t there.

    👉 scitechdaily.com/scientists-ma

    #science #hearing #ears #acoustics #biology #physics #research #norway #germany #health

  12. Bats Manipulate Acoustic Reality to Nullify Background Noise

    Japanese horseshoe bats create silent frequency zones to hear prey better. Study shows how they filter noise for hunting.

    #BatScience, #AnimalBehavior, #Acoustics, #DoshishaUniversity, #NatureStudy

    newsletter.tf/bats-create-sile

  13. Am 25.05.2026 plane ich eine Mischung aus Soundwalk und Vogelsitmmenführung gemeinsam mit der GERÄSCHKULISSE in Dresden.

    Wer gerne dabei sein mag schreibt eine Mail an [email protected]

    Ich freu mich.

    geraeuschkulisse.org/de/events

    #soundwalk #birding #Dresden #sound #nature #listening #acoustics

  14. Am 25.05.2026 plane ich eine Mischung aus Soundwalk und Vogelsitmmenführung gemeinsam mit der GERÄSCHKULISSE in Dresden.

    Wer gerne dabei sein mag schreibt eine Mail an [email protected]

    Ich freu mich.

    geraeuschkulisse.org/de/events

    #soundwalk #birding #Dresden #sound #nature #listening #acoustics

  15. Inside an Ear

    Our ears, like those of many other animals, convert mechanical signals to electrical ones, through a Rube-Goldberg-esque series of transformations. External sound waves make their way down the soft tube of the ear canal, which funnels them to a thin-walled cone, the eardrum, that’s about half as large as a dime. Here, the vibrating air pushes against the cone’s membrane, and those vibrations travel onward through a linked trio of small bones that amplify the vibration’s amplitude.

    The last of these bones presses against an even smaller, oval-shaped membrane. As the bone moves, it shakes the membrane, sending waves through the liquid on its other side. Those waves travel down the spirals of the tiny, pea-sized cochlea, named for a snail shell’s shape. As the waves move through the liquid, they bend bundles of hair-like strands back and forth, like tall grass waving in a breeze. The bending triggers a chemical that binds to nerves at the base of the bundles, sending an electrical signal through the nerve and into the brain.

    But the hair-like bundles, known as stereocilia, are also able to amplify incoming vibrations. In this case, the bundles in the outer portion of the cochlea expend energy to bend more than the incoming vibrations naturally make them move. This bending amplifies the fluid motion that gets transmitted to stereocilia further down the line; it’s those bundles that will make the final conversion to an electrical signal the brain receives. (Image credit: B. Kachar; research credit: Y. Thipmaungprom et al.; via APS)

    Scanning electron microscope view of the stereocilia “hair bundles” inside a frog’s inner ear. #acoustics #biology #cilia #fluidDynamics #physics #science #vibration
  16. Inside an Ear

    Our ears, like those of many other animals, convert mechanical signals to electrical ones, through a Rube-Goldberg-esque series of transformations. External sound waves make their way down the soft tube of the ear canal, which funnels them to a thin-walled cone, the eardrum, that’s about half as large as a dime. Here, the vibrating air pushes against the cone’s membrane, and those vibrations travel onward through a linked trio of small bones that amplify the vibration’s amplitude.

    The last of these bones presses against an even smaller, oval-shaped membrane. As the bone moves, it shakes the membrane, sending waves through the liquid on its other side. Those waves travel down the spirals of the tiny, pea-sized cochlea, named for a snail shell’s shape. As the waves move through the liquid, they bend bundles of hair-like strands back and forth, like tall grass waving in a breeze. The bending triggers a chemical that binds to nerves at the base of the bundles, sending an electrical signal through the nerve and into the brain.

    But the hair-like bundles, known as stereocilia, are also able to amplify incoming vibrations. In this case, the bundles in the outer portion of the cochlea expend energy to bend more than the incoming vibrations naturally make them move. This bending amplifies the fluid motion that gets transmitted to stereocilia further down the line; it’s those bundles that will make the final conversion to an electrical signal the brain receives. (Image credit: B. Kachar; research credit: Y. Thipmaungprom et al.; via APS)

    Scanning electron microscope view of the stereocilia “hair bundles” inside a frog’s inner ear. #acoustics #biology #cilia #fluidDynamics #physics #science #vibration
  17. MIT News: MIT engineers’ virtual violin produces realistic sounds. “While there are software programs and plug-ins that enable users to play around with virtual violins, their sounds are typically the result of sampling and averaging over thousands of notes played by actual violins. In contrast, the new computational violin takes a physics-based approach: It produces sound based on the way […]

    https://rbfirehose.com/2026/04/30/mit-news-mit-engineers-virtual-violin-produces-realistic-sounds/
  18. MIT News: MIT engineers’ virtual violin produces realistic sounds. “While there are software programs and plug-ins that enable users to play around with virtual violins, their sounds are typically the result of sampling and averaging over thousands of notes played by actual violins. In contrast, the new computational violin takes a physics-based approach: It produces sound based on the way […]

    https://rbfirehose.com/2026/04/30/mit-news-mit-engineers-virtual-violin-produces-realistic-sounds/
  19. 🦗 Could insect ears inspire the future of acoustic technology?

    🔗 Comparative Analysis of Morphological and Acoustic Correlates of Bush-Cricket Tympanic Membranes. Computational and Structural Biotechnology Journal (CSBJ). DOI: doi.org/10.34133/csbj.0035

    📚 CSBJ - A Science Partner Journal: spj.science.org/journal/csbj

    #Bioinspiration #Biomimetics #Acoustics #Bioacoustics #EvolutionaryBiology #Biosensors #Entomology #Neuroscience

  20. 🦗 Could insect ears inspire the future of acoustic technology?

    🔗 Comparative Analysis of Morphological and Acoustic Correlates of Bush-Cricket Tympanic Membranes. Computational and Structural Biotechnology Journal (CSBJ). DOI: doi.org/10.34133/csbj.0035

    📚 CSBJ - A Science Partner Journal: spj.science.org/journal/csbj

    #Bioinspiration #Biomimetics #Acoustics #Bioacoustics #EvolutionaryBiology #Biosensors #Entomology #Neuroscience

  21. TIL that a seashell can form a Helmholtz resonator with low Q factor, by amplifying many frequencies, resulting in "rushing sounds of the sea FX
    Helmholtz resonators are important for me in PA Audio Engineering, studio Engineering and pure Physics

    Subwoofers have Helmholtz resonators. We use Helmholtz resonators to remove standing waves in acoustic ENV:

    In every and all stringed instruments, response curves of instruments consists of a series of Helmholtz resonance modes in association with the size and shape of the resonance cavity including vibration damping from absorption by the resonance cavity material

    Source
    en.wikipedia.org/wiki/Helmholt

    #Helmholtz #resonator #Audio #Engineering #standing #waves #acoustics #technology #Universal #Sound #mixing

  22. TIL that a seashell can form a Helmholtz resonator with low Q factor, by amplifying many frequencies, resulting in "rushing sounds of the sea FX
    Helmholtz resonators are important for me in PA Audio Engineering, studio Engineering and pure Physics

    Subwoofers have Helmholtz resonators. We use Helmholtz resonators to remove standing waves in acoustic ENV:

    In every and all stringed instruments, response curves of instruments consists of a series of Helmholtz resonance modes in association with the size and shape of the resonance cavity including vibration damping from absorption by the resonance cavity material

    Source
    en.wikipedia.org/wiki/Helmholt

    #Helmholtz #resonator #Audio #Engineering #standing #waves #acoustics #technology #Universal #Sound #mixing

  23. 🌟 Welcome to #AAAA2025 - the 11th Congress of the #AlpsAdriaAcousticsAssociation 🌟

    📍 Where: #Varaždin, Croatia
    📅 When: 18–19 September 2025

    Endorsed by the #EAA, AAAA 2025 promises to be an extraordinary gathering for the #acoustics community.

    🔍 Explore cutting-edge advancements across various topics, including #architecturalAcoustics, #noiseControl, #psychoacoustics, computational methods, and more. Engage with distinguished keynote speakers presenting the latest innovations in the field.

    📌 Key Dates:
    Registration and abstract submission open: 1 February 2025
    Abstract submission deadline: 31 May 2025
    Full papers due 8 September: 2025

    🔗 Learn more: alpsadriaacoustics.eu/

    Don’t miss this opportunity to connect, share, and shape the future of acoustics in the beautiful city of #varazdin ! 🌍✨

    #sound

  24. Dry Plants Warn Away Moths

    Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.

    In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)

    #acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration

  25. Dry Plants Warn Away Moths

    Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.

    In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)

    #acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration

  26. Dry Plants Warn Away Moths

    Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.

    In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)

    #acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration

  27. Dry Plants Warn Away Moths

    Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.

    In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)

    #acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration

  28. Dry Plants Warn Away Moths

    Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.

    In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)

    #acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration

  29. 📣 SEMINAR SERIES 2024 FINALE! 📣

    Don't miss our final seminar of the year! 🗓️August 27th 2 PM GMT.
    🔬 Dr. Manjari Jain @manjari from will be presenting her groundbreaking research on cricket communication and acoustics 🦗

    📺 Join us live on YouTube: youtube.com/watch?v=wO_f9_Lk5t

    #Science #Research #Seminar #onlineseminar #CricketCommunication #Acoustics

  30. An experiment in non-segmental metathesis

    "Wasp" developed from earlier "waps". The apparent movement/exchange of /p/ and /s/ can be modelled as a gradual change using morphing. In this spectrographic video clip, the pale valley around t = 15 is the low-intensity [p] closure, which progressively "fills up" with sibilance, while at the same time, the sibilant ridge at about t = 30 descends to a valley, the new, now later [p] closure.

    #acoustics #phonetics #metathesis #philology

  31. An experiment in non-segmental metathesis

    "Wasp" developed from earlier "waps". The apparent movement/exchange of /p/ and /s/ can be modelled as a gradual change using morphing. In this spectrographic video clip, the pale valley around t = 15 is the low-intensity [p] closure, which progressively "fills up" with sibilance, while at the same time, the sibilant ridge at about t = 30 descends to a valley, the new, now later [p] closure.

    #acoustics #phonetics #metathesis #philology