• Title/Summary/Keyword: Pink Noise

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Relationship Between Effects of Pink Noise on Brain Wave Concentration Index by Individual Characteristics and Multiple Intelligence (Pink Noise가 개인별 특성에 따라 뇌파 집중지표에 미치는 영향과 다중지능과의 관계)

  • Shin, Seong-Kweon;Shim, Jun-Young
    • Science of Emotion and Sensibility
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    • v.16 no.4
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    • pp.481-492
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    • 2013
  • This study sorted scores of individual characteristics and multiple intelligence by sex, handle, blood type and age through previous questionnaire with 462 adult males and females. Then electrode was attached to prefrontal lobes Fp1 and Fp2 with EEG measuring system and changes of concentration between no stimulation state and pure pink noise stimulation and their relations to multiple intelligence were examined. As a result of analysis of covariance, the mean concentration of all subjects was significantly higher in the pink noise stimulation compared to no stimulation. According to individual characteristics, concentration was significantly higher in left-hander, type A blood, and group in their thirties except for gender. Concentration in pink noise state strengthened the relation to spatial intelligence and made negative correlations with musical intelligence compared to no stimulation state. These results suggested that individual characteristics should be reflected on using pink noise for improving concentration.

The Effect of White Noise and Pink Noise on the Brain Activity (화이트 노이즈와 핑크 노이즈가 뇌 활성도에 미치는 영향)

  • Kim, Byunghyun;Whang, Mincheol
    • The Journal of the Korea Contents Association
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    • v.17 no.5
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    • pp.491-498
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    • 2017
  • This study is to determine the significant effect of white and pink noise on brain. The brain synchronization has been analyzed under the condition of non-noise, white nose and pink noise(male 10, female 10, mean age $23.3{\pm}2.14$). As a result of analysis, pink noise stimulus, alpha, low beta band, and high beta band were significantly decreased than non-noise and white noise. In addition, these brain response pattern significantly increased at frontal lobe and temporal lobe, and dominated on the right hemisphere. This result is considered to be useful of sound design in driving quality of human life on the basis of neuroscience.

A Mobile System for Tinnitus Diagnostics and Therapy using Various Sound Stimuli (다양한 자극음을 이용한 모바일 이명 진단과 치료 시스템)

  • Lee, YoungRok;Park, DongGyu;Kim, HyoungWook
    • Journal of Korea Multimedia Society
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    • v.21 no.11
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    • pp.1317-1326
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    • 2018
  • A common treatment for tinnitus rehabilitation is to use a device called a sound generator to continuously supplying the sound stimuli. The devices usually provides a sound called white noise, or pink noise, which are common in nature. In this paper, we developed a mobile system for tinnitus diagnostics and therapy using Android mobile applications. The first step for tinnitus diagnostics is detecting an exact tinnitus frequency of the patients, therefore we provide a bark scale tinnitus detection algorithm for fast and accurate diagnostics. Also, the system can provide various stimuli sounds including white noise, pink noise, brown noise, nature sounds, and binaural beats. Also we provides the therapeutic functions through questionnaires to solve existing problems of the patients.

An Experiment Study on the Chaos Phenomenon for a Rectangular Cantilever Beam (직사각형 외팔보의 혼돈현상에 대한 실험)

  • Kim, Myoung-Gu;Pak, Chul-Hui;Cho, Chong-Du;Piao, Chang-Hao
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.05a
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    • pp.567-571
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    • 2005
  • The slender rectangular cantilever beam has vef interesting to study dynamic behaviors of the harmonic base excitation of a cantilever beam shows many nonlinear dynamics due to unstability , energy transfer and mode coupling. Nonlinear phenomenon shows superharmonic, subharmonic, super subharmonic and chaotic motions of the cantilever beam. Experimental observation and verification of these phenomenon carry much importance for the theoretical study as well as in it self. In the experimental cantilever beam, the chaotic motions of the beam appear as a pink noise signal in FFT analysis and as a torus structure in the oscilloscope analyzed to eventually give information of chaotic motions of the cantilever beam.

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Speech Enhancement Using Level Adapted Wavelet Packet with Adaptive Noise Estimation

  • Chang, Sung-Wook;Kwon, Young-Hun;Jung, Sung-Il;Yang, Sung-Il;Lee, Kun-Sang
    • The Journal of the Acoustical Society of Korea
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    • v.22 no.2E
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    • pp.87-92
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    • 2003
  • In this paper, a new speech enhancement method using level adapted wavelet packet is presented. First, we propose a level adapted wavelet packet to alleviate a drawback of the conventional node adapted one in noisy environment. Next, we suggest an adaptive noise estimation method at each node on level adapted wavelet packet tree. Then, for more accurate noise component subtraction, we propose a new estimation method of spectral subtraction weight. Finally, we present a modified spectral subtraction method. The proposed method is evaluated on various noise conditions: speech babble noise, F-l6 cockpit noise, factory noise, pink noise, and Volvo car interior noise. For an objective evaluation, the SNR test was performed. Also, spectrogram test and a very simple listening test as a subjective evaluation were performed.

Variation of the Sound Insulation Performance of Window in the Apartment House depending on the Sound Source Characteristics (공동주택에서 음원특성에 따른 외부창호 차음성능 변화)

  • Park, Hyeon-Ku;Lee, Ok-Kyun;Han, Dong-Hwa;Song, Hyuk;Kim, Sun-Woo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2000.06a
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    • pp.1735-1740
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    • 2000
  • The aim of this study is to analyze the sound insulation performance of windows depending on the sound source types and to propose the noise control method in the apartment house. The regions where apartment houses are constructed are varied in the dominant noise sources such as aircraft noise, railway noise and road traffic noise. For the experiment, nine noise sources including pink noise were selected and recorded, which was used in the experiment by reproducing. As a result of this study, the sound insulation performance of window was found that when the frequency contents of the noise were high level in all frequency bands the difference of sound insulation performance was negligible, but when the frequency contents were low level at particular frequency band the difference of sound insulation performance was shown very differently.

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Customized Realtime Control of Sleep Induction Sound based on Brain Wave Data (뇌파데이터에 기반한 맞춤형 수면유도음향의 실시간제어)

  • Wi, Hyeon Seung;Lee, Byung Mun
    • Journal of Korea Multimedia Society
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    • v.23 no.2
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    • pp.204-215
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    • 2020
  • People who have sleep disorders such as insomnia take a long time to get to sleep, namely sleep latency. In order to reduce it, effective stimulations and environments to induce sleep such as ASMR or pink noise are necessary. However these have different effects and preferences for each individual. Therefore customized service and control for the sleep induction will be provide to him/her. In this paper, we proposed SIS control system which provides selectively sound control among various kinds of ASMR and pink noise according to sleep state measured from brain wave data for an individual. In order to verify the effectiveness of the system, we had conducted totally 30 experiments for 5 people, and all EEG data measured from all the people during sleep. An average of 3.7 hours was spent per experiment. In comparison experiments with and without sound control for sleep induction, the latency time was reduced by an average of 8 minutes as well as delta waves and theta waves, which appear only in deep sleep, are increased by 21%.