Δευτέρα 7 Μαρτίου 2016

Online Tone Generator

Tinnitus is a medical condition in which a person hears a sound from within their ears, but there is no external sound present in the environment. This auto-generated sound may occur only at certain times, such as when the person is under stress, or it may be an all day and all night long experience. If you have tinnitus, there are treatment options that may help to lessen your symptoms. An online tone generator for tinnitus is one convenient way to take control of tinnitus and regain your sense of hearing.

Types of Tinnitus Tones
Tinnitus is not a disease in and of itself, but instead it is a symptom. The ringing in your ears is not the same as the ringing that occurs in the ears of someone else with tinnitus. Each person has his or her own unique tone or combination of tones. If you want to try sound therapy for your tinnitus, the first step is identifying the tone of your ringing. Some people have just a single frequency of the sounds, while others have multiple frequencies. In most cases, the frequency of your tinnitus will not change, unless there is further damage to your auditory system.

How to Use an Online Tone Generator
Using our online tone generator is easy to do. Begin by setting up your computer in a room where there are not any other noises. Set the volume controller at a level that is comfortable. Slowly move the toggle along the frequency bar until you find the tone of your tinnitus. If you have multiple tones, you can click the button for setting up a generator that includes two or more tones simultaneously.

How Our Online Tone Generator Can Help Tinnitus
Our tone generator helps your brain to mask the sounds of ringing in your ears. There are no side effects to using this online generator. Our generator is compatible with most electronic devices, so you can use it at work with headphones and your iPad or computer.

Sound generators such as our online tone generator are proven to help people with tinnitus lessen their symptoms. When you no longer have to pay attention to the ringing from your ears, you may find it easier to focus on your work or leisure activities. You may also gain more enjoyment from conversations, music and the simple sounds of birds singing outside in the trees.




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Aided Electrophysiology Using Direct Audio Input: Effects of Amplification and Absolute Signal Level

Purpose
This study investigated (a) the effect of amplification on cortical auditory evoked potentials (CAEPs) at different signal levels when signal-to-noise ratios (SNRs) were equated between unaided and aided conditions, and (b) the effect of absolute signal level on aided CAEPs when SNR was held constant.
Method
CAEPs were recorded from 13 young adults with normal hearing. A 1000-Hz pure tone was presented in unaided and aided conditions with a linear analog hearing aid. Direct audio input was used, allowing recorded hearing aid noise floor to be added to unaided conditions to equate SNRs between conditions. An additional stimulus was created through scaling the noise floor to study the effect of signal level.
Results
Amplification resulted in delayed N1 and P2 peak latencies relative to the unaided condition. An effect of absolute signal level (when SNR was constant) was present for aided CAEP area measures, such that larger area measures were found at higher levels.
Conclusion
Results of this study further demonstrate that factors in addition to SNR must also be considered before CAEPs can be used to clinically to measure aided thresholds.

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Aided Electrophysiology Using Direct Audio Input: Effects of Amplification and Absolute Signal Level

Purpose
This study investigated (a) the effect of amplification on cortical auditory evoked potentials (CAEPs) at different signal levels when signal-to-noise ratios (SNRs) were equated between unaided and aided conditions, and (b) the effect of absolute signal level on aided CAEPs when SNR was held constant.
Method
CAEPs were recorded from 13 young adults with normal hearing. A 1000-Hz pure tone was presented in unaided and aided conditions with a linear analog hearing aid. Direct audio input was used, allowing recorded hearing aid noise floor to be added to unaided conditions to equate SNRs between conditions. An additional stimulus was created through scaling the noise floor to study the effect of signal level.
Results
Amplification resulted in delayed N1 and P2 peak latencies relative to the unaided condition. An effect of absolute signal level (when SNR was constant) was present for aided CAEP area measures, such that larger area measures were found at higher levels.
Conclusion
Results of this study further demonstrate that factors in addition to SNR must also be considered before CAEPs can be used to clinically to measure aided thresholds.

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Aided Electrophysiology Using Direct Audio Input: Effects of Amplification and Absolute Signal Level

Purpose
This study investigated (a) the effect of amplification on cortical auditory evoked potentials (CAEPs) at different signal levels when signal-to-noise ratios (SNRs) were equated between unaided and aided conditions, and (b) the effect of absolute signal level on aided CAEPs when SNR was held constant.
Method
CAEPs were recorded from 13 young adults with normal hearing. A 1000-Hz pure tone was presented in unaided and aided conditions with a linear analog hearing aid. Direct audio input was used, allowing recorded hearing aid noise floor to be added to unaided conditions to equate SNRs between conditions. An additional stimulus was created through scaling the noise floor to study the effect of signal level.
Results
Amplification resulted in delayed N1 and P2 peak latencies relative to the unaided condition. An effect of absolute signal level (when SNR was constant) was present for aided CAEP area measures, such that larger area measures were found at higher levels.
Conclusion
Results of this study further demonstrate that factors in addition to SNR must also be considered before CAEPs can be used to clinically to measure aided thresholds.

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Age- and Gender-Related Mean Hearing Threshold in a Highly-Screened Population: The Korean National Health and Nutrition Examination Survey 2010–2012

by Yun Hwi Park, Seung-Ho Shin, Sung Wan Byun, Ju Yeon Kim

Background

In evaluating hearing disability in medicolegal work, the apportionment of age- and gender-related sensorineural hearing loss should be considered as a prior factor, especially for the elderly. However, in the literature written in the English language no studies have reported on the age- and gender-related mean hearing threshold for the South Korean population.

Objective

This study aimed to identify the mean hearing thresholds in the South Korean population to establish reference data and to identify the age- and gender-related characteristics.

Methods

This study is based on the Korea National Health and Nutrition Examination Survey (KNHANES) 2010–2012, which was conducted by the Korean government, the data of which was disclosed to the public. A total of 15,606 participants (unweighted) representing 33,011,778 Koreans (weighted) with normal tympanic membrane and no history of regular or occupational noise exposure were selected and analyzed in this study. The relationship between the hearing threshold level and frequency, age, and gender was investigated and analyzed in a highly-screened population by considering the sample weights of a complex survey design.

Results

A gender ratio difference was found between the unweighted and the weighted designs: male:female, 41.0%: 59.0% (unweighted, participants) vs. 47.2%:52.8% (weighted, representing population). As age increased, the hearing threshold increased for all frequencies. Hearing thresholds of 3 kHz, 4 kHz, and 6 kHz showed a statistical difference between both genders for people older than 30, with the 4 kHz frequency showing the largest difference. This paper presents details about the mean hearing threshold based on age and gender.

Conclusions

The data from KNHANES 2010–2012 showed gender differences at hearing thresholds of 3 kHz, 4 kHz, and 6 kHz in a highly-screened population. The most significant gender difference in relation to hearing threshold was observed at 4 kHz. The hearing thresholds at all of the tested frequencies worsened with increasing age. The mean hearing thresholds suggested in this study will be useful for the formulation of healthcare-related hearing policies and used as reference data for disability ratings for hearing loss due to various causes.



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