Diseases, Conditions, Syndromes

Acoustic neuroma: To treat or not to treat?

Dear Mayo Clinic: I was diagnosed with an acoustic neuroma last year. My doctor says I likely won't need treatment. But I know others who have had the same condition and had surgery to remove the tumor. Why would I not need ...

Psychology & Psychiatry

Keep the beat say, rhythm researchers

Why we do move when we hear good music? Researchers at McMaster University have found that tapping to the beat measurably enriches the listening experience, broadening our capacity to understand timing and rhythm.

Oncology & Cancer

Using acoustic tweezers to deform leukemia cells

A team of researchers at the University of Southern California, Los Angeles has found that acoustic tweezers can be used to deform leukemia cells in useful ways. In their paper published in IEEE Transactions on Ultrasonics, ...

Neuroscience

Sound stimulation during sleep can enhance memory

Slow oscillations in brain activity, which occur during so-called slow-wave sleep, are critical for retaining memories. Researchers reporting online April 11 in the Cell Press journal Neuron have found that playing sounds ...

Neuroscience

How can infants learn about sounds in their native language?

Infants can differentiate most sounds soon after birth, and by age 1, they become language-specific listeners. But researchers are still trying to understand how babies recognize which acoustic dimensions of their language ...

Neuroscience

Growth hormone helps repair the zebrafish ear

Loud noise, especially repeated loud noise, is known to cause irreversible damage to the hair cells inside the cochlea and eventually lead to deafness. In mammals this is irreversible, however both birds and fish are able ...

Diseases, Conditions, Syndromes

Smokers could be more prone to schizophrenia, study finds

Smoking alters the impact of a schizophrenia risk gene. Scientists from the universities of Zurich and Cologne demonstrate that healthy people who carry this risk gene and smoke process acoustic stimuli in a similarly deficient ...

Neuroscience

The sleeping brain remains attentive to its environment

By exposing sleepers to complex sounds, researchers from the CNRS and ENS Paris1, in collaboration with Monash University (Australia), have just demonstrated that our brain can track the sounds in its environment while we ...

Psychology & Psychiatry

Laughter acts as a stress buffer—and even smiling helps

People who laugh frequently in their everyday lives may be better equipped to deal with stressful events—although this does not seem to apply to the intensity of laughter. These are the findings reported by a research team ...

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Acoustics

Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics technology may be called an acoustical engineer. The application of acoustics can be seen in almost all aspects of modern society with the most obvious being the audio and noise control industries.

Hearing is one of the most crucial means of survival in the animal world, and speech is one of the most distinctive characteristics of human development and culture. So it is no surprise that the science of acoustics spreads across so many facets of our society—music, medicine, architecture, industrial production, warfare and more. Art, craft, science and technology have provoked one another to advance the whole, as in many other fields of knowledge. Lindsay's 'Wheel of Acoustics' is a well accepted overview of the various fields in acoustics.

The word "acoustic" is derived from the Greek word ἀκουστικός (akoustikos), meaning "of or for hearing, ready to hear" and that from ἀκουστός (akoustos), "heard, audible", which in turn derives from the verb ἀκούω (akouo), "I hear".

The Latin synonym is "sonic", after which the term sonics used to be a synonym for acoustics and later a branch of acoustics. Frequencies above and below the audible range are called "ultrasonic" and "infrasonic", respectively.

This text uses material from Wikipedia, licensed under CC BY-SA