Decibel Level​ Sounds at or below 70 dBA are generally considered safe. Any sound at or above 85 dBA is more likely to damage your hearing over time. Researchers have found that people who are exposed over long periods of time to noise levels at 85 dBA or higher are at a much greater risk for hearing loss.

Sound is measured in units called decibels (dB). Sounds of less than 75 decibels, even after a lengthy exposure, are unlikely to cause hearing loss. However extended or repeated exposure to sounds at or above 85 decibels (approximately the level of a vacuum cleaner) can cause hearing loss.

Topic Overview

The U.S. Environmental Protection Agency (EPA) and the World Health Organization (WHO) recommend maintaining environmental noises below 70 dBA over 24-hours (75 dBA over 8-hours) to prevent noise-induced hearing loss.

Loudness is measured in decibels (dB). As decibels rise, loudness quickly increases. A 10-dB rise is a 10-time leap in loudness. That means an 80-dB sound (a vacuum cleaner) is 10 times louder than a 70-dB sound (a telephone ringing) and 100 times louder than a 60-dB sound (normal conversation).

Acoustic grenades can go roughly from 120 decibels to 190 decibels. German researcher Jurgen Altmann showed that a blast of 210 decibels or more affects the inner organs — the lungs — and could cause internal injury that could lead to death. A blast will impact the body, and would do so very violently.

Internal vibrations are thought to stem from the same causes as tremors. The shaking may simply be too subtle to see. Nervous system conditions such as Parkinson’s disease, multiple sclerosis (MS), and essential tremor can all cause these tremors.

These elements naturally sustain and rejuvenate life in 528nm/Hz.” A peer-reviewed double blind study published by nerve cell researchers found 528 waves in music boosts human immunity 100% by enhancing anti-oxidant activity. 528 waves also protected the central nervous system of alcoholics by 20%.

The takeaway. Though evidence may be limited on some methods, music therapy has been found to be effective for stress reduction and relaxation and has been shown to offer many health benefits. There is little risk to listening to music. Vibroacoustic sound therapy improves pain management and more.

Binaural beats in the delta (1 to 4 Hz) range have been associated with deep sleep and relaxation. Binaural beats in the theta (4 to 8 Hz) range are linked to REM sleep, reduced anxiety, relaxation, as well as meditative and creative states.

God Frequency is a 15-minute daily program that uses cortical synchronization science and Jesus’s teachings to manifest God’s blessings into the users’ lives. It’s a preferred manifestation program that uses sound waves to control the brain waves, converting destructive thoughts into positive results.

Generally speaking, low-frequency waves are linked to “delta” and “ theta ” states which can boost relaxation and improve sleep. Higher frequencies reportedly boost your brain waves into a “ gamma ” state which may make you more alert, focused, or better able to recall memories.

These studies suggested that human biomechanical response, especially for the muscle activity, was significantly affected by frequency of whole-body vibration. Vibration can cause muscle lengthening and shortening, potentially resulting in increased muscle tension due to a stretch reflex [10].

These destructive frequencies entrain the thoughts towards disruption, disharmony, and disunity. Additionally, they also stimulate the controlling organ of the body — the brain — into disharmonious resonance, which ultimately creates disease and war.”

On the other side of the human hearing range, the highest possible frequency heard without discomfort is 20,000Hz. While 20 to 20,000Hz forms the absolute borders of the human hearing range, our hearing is most sensitive in the 2000 – 5000 Hz frequency range.

Music has been a part of meditation since ancient times. Certain records mention use of 432 Hz music as very beneficial tone for inducing sleep. Musicians describe it by words like correct and peaceful tone.

Context: The current reference frequency for tuning musical instruments is 440 Hz. Some theorists and musicians claim that the 432 Hz tuning has better effects on the human body, but there are no scientific studies that support this hypothesis.

440 Hz is the most widely accepted tuning standard in modern music, but have you ever wondered why we tune our instruments to the frequencies that we do?

A frequency of 440 Hz means that the prongs of the tuning fork vibrate 440 times every second.

Orchestras always tune to ‘A’, because every string instrument has an ‘A’ string. The standard pitch is A=440 Hertz (440 vibrations per second). This is because most of the band instruments are actually pitched in B flat, and so this is their natural tuning note.

It is the scale that unites the body and consciousness with nature. According to Richard Huisken, music tuned to 432 Hz is softer and calmer, giving greater clarity and is easier on the ears. Meditation music tuned to 432 Hz is relaxing for the body and mind and also more harmonically pleasant than 440 Hz.

Before the conductor walks on stage and the concert begins, the musicians need to be sure that their instruments are perfectly in tune with one another. The reason the oboe plays the tuning note is not only tradition – it is also because the sound of the oboe is very penetrating.

An orchestra tunes itself to a very particular frequency, usually 440 hertz, a note known as A 440. The note is played by the oboist, and the rest of the orchestra tunes their instruments to match it. The oboe leads the tuning because of all the instruments, it is least affected by humidity or other weather conditions.