Sound

Sound

Taking a Leaf Out of Morland’s Book

The megaphone—first seen in historical artifacts from Ancient Greece and in Native-American artistic depictions of a chief, is a tool used even today to equalize the proverbial sound field. Samuel Morland and Athanasius Kircher are credited to have independently “invented” the modern acoustic version of this useful device around the seventeenth century 1

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Bored Out of My Mind

Hi! I am a hearing aid and I am bored out of my mind.

It took years, no decades, for me to hone the skills to be a discriminating listener. At first, I could tell when sound was coming from the front versus other directions. Then, I could tell when you were speaking from when the fan was whirring or traffic was zipping by.

It took a lot of hard work but I even learned how to pull out the voice of whomever was speaking with you from the random noises in the background. 

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Tinnitus? Or Notched or Sloped Hearing Loss?

Tinnitus is a heterogenous phenomenon that includes a range of sound percepts, patient reactions, and patient characteristics. It is also not uncommon for patients to complain of tinnitus, but based upon further inquiry to determine their chief complaint is actually hearing loss.


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Trapping the Tiniest Sound

Phonons are the smallest unit of the vibrational energy that makes up sound waves. Like their light counter-parts (photons), phonon are not matter exactly but are considered particles in a sense.

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Shocking Tinnitus Treatment Approaches

A number of attempts are underway to use neural stimulation to modulate tinnitus perception, including sound stimulation paired with somatosensory stimulation. The effectiveness of these treatments has been variable. It is well described in the literature that cochlear implants can often provide some level of tinnitus suppression, when the implant is being utilized. However, the invasiveness of the procedure and risk for further damage to the cochlea, make its application for tinnitus management alone currently implausible.

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The Sound of Change

You know what is creating a lot of acoustic vibrations (call it noise or sound) in the news? It’s the entirely novel sound that the new electric Harley Davidson, named the Livewire, will make. 

Making an electric motorcycle was perhaps the handshake with the future that the company was looking for. However, with this bold step came, what must have been a philosophical challenge the likes of which the company may have rarely encountered. 

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How Loud is a Professional Football Game?

As part of its efforts to educate the public about the risks of exposure to loud sounds at home and in communities, the CDC National Center for Environmental Health (NCEH) has procured one-page advertisements in official printed sports programs for the National Hockey League (NHL), the National Basketball Association (NBA) and the National Football League (NFL).

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Are We Breaking the World’s Most Powerful Pair of Glasses?

Have you seen the movie "Finding Dory"? In one of the many exciting sequences, the protagonist Dory needs the help of Bailey the beluga whale to navigate through a maze of pipes. In a later, and even more exciting sequence, Bailey helps Dory keep track of a moving truck in which Dory's friends Nemo and Merlin inadvertently became captured.

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Trees in a Forest, Winds on Mars

Is there sound if a tree falls in the forest but there is no one there to hear it?

It is time to modernize this question by asking if there is sound if wind blows on Mars and Elon has just not landed there yet.

Turns out NASA’s InSight lander is a nice surrogate for the symbolic human supposed to be there for sound to happen. It sent back sounds generated by Martian winds captured by its seismometer to the Jet Propulsion Laboratory (JPL).

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Is There an App for That?

In today’s digital world, it seems that there is an app for almost everything. Audiologists may be uniquely interested in sound level meter apps and, therefore, also in a new study by Serpanos and colleagues (2018).


These authors evaluated the accuracy of three sound level meter apps, Analyzer, Sound Level Meter Pro, and SPL Meter, using an iPhone 6S smartphone. All three of these apps have the capability to calibrate the internal microphone of the smartphone.


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