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  • Title/Summary/Keyword: Voice, Sound

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A study on application of the statistic model about an utterance of the speaker (화자의 발음에 대한 통계적 모델의 적용에 관한 연구)

  • Kim, Dae-Sik;Bae, Myong-Jin;Yoon, Jae-Gang
    • Proceedings of the KIEE Conference
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    • 1988.07a
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    • pp.25-28
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    • 1988
  • A speech that play a part of important mediation in the man's conversation is the sound of representation to man's emotion and thought, then voice sound could be verified and identified a speaker's speech by individual property. This study indicates as distribution of pitch in searching for sample number of each pitch with eye in the sound waveform of speaker. We propose the algorithm that judge speaker's emotion state, personality, regional group, age, sex distinction, e.t.c., according to the deviation degree.

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A study about five-sounds(Gong, Sang, jiao, zhi, yu) of Sasang constitutional sound analysis (오음의 사상의학적 음성분석과 고찰)

  • Kim, Dal-Rea
    • Journal of Sasang Constitution and Immune Medicine
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    • v.15 no.1
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    • pp.50-59
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    • 2003
  • Purpose Five animals sounds which are come under five sounds(Gong, Sang, jiao, zhi, yu) which are compared with the musical scale. It is looking for similarity between five animals' sounds and the musical scale. Methods 녹음 record 1 ig machine 1. Five animals (cattle, horse, pheasant, pig, sheep) sounds has been recording on tape. 2. That was transfer to CSL(computerized speech lab) 3. That was analysed to pitch, formant 1,2,3. energy pitch 4. That analysed result (Pitch, formant 1,2,3. energy ratio) of five animals are calculated and compared with the five musical scale(five sounds) Result The ratio of five animals sounds is not consistent with the musical scale in any five item (pitch, formant 1,2,3. energy). Conclusion 1.The five musical scale has no similarity with the five animals sounds 2.The five sound is supposed to oriented form theoretical back ground of five-going not have no relative with the five animals sounds

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A Study on Voice Quality and Speed Upgrade for Internet phone System (인터넷폰 시스템의 음질 및 속도향상연구)

  • 임종설;김성호;조남인;오춘석
    • Journal of the Korea Computer Industry Society
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    • v.3 no.5
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    • pp.631-640
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    • 2002
  • The internet phones that are currently available in use adopt packet exchange system, transferring through various routes and lacking sufficient band width with a result that there is an accompanied delay for packet transmission since the traffic is increased, accordingly affecting a lot in sound quality and speed. Two solutions for such troubles are suggested in this study to improve sound quality of internet phones. Firstly, we minimize the delay and damage regarding packet size based on traffic size by using the data algorithm from variable packets in order to supplement decreased sound quality due to the delay and damage of sound data. The second suggestion is to employ a method of Jitter compensation by giving an appropriate initial delay time with regenerating buffers to bypass troubles from Jitter, From employing the Jitter compensation method, we found that there is a sound quality improvement due to the less stoppage phenomenon.

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An Experimental Study on the Fitting of 64 Channel Digital Hearing Aid by In-situ Method (64채널 디지털 보청기의 In-situ에 의한 휘팅 실험 연구)

  • Jarng, Soon-Suck
    • The Journal of the Acoustical Society of Korea
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    • v.31 no.5
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    • pp.273-279
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    • 2012
  • In this thesis, a nonlinear compression fitting method was studied for each frequency channel of a 64 channel digital hearing aid. Unlike conventional fitting formula method done from the result of the hearing loss test, the present fitting method uses the auditory threshold of sound pressure measured near the tympanic membrane while ITE (In-The-Ear) hearing aid is fitted into the user's ear canal. Also, the spectral distribution of the voice sound pressure was used for realizing of output sound pressure compression curves against input sound pressure level. Theoretical research results of FFT-iFFT compression algorithm has been evaluated by experimental gain measurements at each different input sound pressure level 50 dB, 70 dB, 90 dB respectively.

Improvement of Background Sound Reduction Performance by Non-negative matrix Factorization Method by Wiener Filter Post-processing (위너필터 후처리를 통한 비음수행렬분해 기법의 배경음 저감 성능 향상)

  • Lee, Sang Hyeop;Kim, Hyun Tae
    • The Journal of the Korea institute of electronic communication sciences
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    • v.14 no.4
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    • pp.729-736
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    • 2019
  • In this paper, we propose a method to improve the background sound separation performance by adding a Wiener filter to the end of the non - negative matrix factorization method. In the case of a mixed voice signal with background sound, a part that has not yet been completely separated may remain in the signal that separated first by the non-negative matrix factorization method. In this case, it can be reduced in proportion to the size of the residual signal due to the Wiener filter, so that the background sound separation or reduction effect can be expected. Experimental results show that the addition of the Wiener filter is more effective than the case of applying the non-negative matrix factorization method.

Development of the hybrid-type ultrasound speaker (하이브리드형 초음파 스피커 개발)

  • Lee, Hyoung-Sang;Kim, Bok-Kyu
    • The Journal of the Acoustical Society of Korea
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    • v.40 no.3
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    • pp.247-253
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    • 2021
  • Directional ultrasonic speakers that are used to hear sound only in a specific area have been continuously researched on various improvements in terms of sound quality and cost compared to general speakers. In this paper, we propose a DSP based hybrid-type ultrasonic speaker that can be heard at the same time as a general speaker in order to compensate for the sound in the low-band range, considering that it is difficult to hear the low-band sound below 500 Hz due to the sensor characteristics of the ultrasonic speaker. In the case of the system that is implemented by simply connecting a general speaker and an ultrasonic speaker, there are issues of high cost and difficulties of control as two amplifiers are used to playback ultrasonic and general sound sources. In addition, sound quality deteriorates due to the difference in playback time between ultrasonic and general sound sources. In order to improve issues of cost, control and sound quality, we developed hybrid-type ultrasonic speaker with a DSP based amplifier that can simultaneously playback by synchronizing the general sound source with the regenerated ultrasonic sound source, in addition to implement the existing CODEC functions such as Dynamic Range Control (DRC) and Equalizer (EQ).

Design of a Low Power Voice Signal Processing and Control Module using a μ-controller for Totally Implantable Middle Ear system (마이크로컨트롤러를 이용한 완전 이식형 인공중이용 저전력 음성 신호처리 및 제어 모듈의 설계)

  • 강호경;정의성;임형규;박일용;윤영호;김민규;송병섭;조진호
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.41 no.5
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    • pp.49-56
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    • 2004
  • A low power consuming voice signal processing and control module was designed using a small μ-controller for use in a totally implantable middle ear system. The module was designed that it can control the implanted system as well as process the fitting algorithm of input sound signal. In ordinary operation mode, the μ-controller processes the applied sound signal for compensating the hearing loss of the patients. When the control signal is applied from the IR receiving module, the μ-controller interrupts the signal processing and executes the order of the control signals such as power on/off, volume up/down. The designed module was implemented and verified the performance of the system through several experiments.

Alterations of Mucosal Vibration of True Vocal Folds on Tongue-Tip Trill : Preliminary Study Using the Electroglottography (Trill 발성시 전기성문파 측정검사로 분석한 성대점막 진동의 변화 : 예비연구)

  • 진성민;반재호;김남훈;이경철;권기환;이용배
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.11 no.1
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    • pp.76-80
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    • 2000
  • Tongue-tip trill is a sound made by the tongue tip making contract with the alveolar ridge and oscillating rapidly as sound is produced. It is an exercise used by many singers to warm up the voice and used as one of the methods of voice rehabilitation for patients who have the vocal folds scarred postoperatively and also who present with a variety of disorders, particularly hypofunction and presbyphonia. We intended to investigate the mucosal vibration of the true vocal folds on tongue-tip trill by electroglottography and to find e effective methods of tongue-tip trill. One adult male volunteer participated. Spectrography and electroglottography were checked repeatedly 15 times, more than 5 second in each times, at same pitch, in three conditions of phonation : sustained /a/ vowel, anterior trill in which tongue-tip vibrated at anterior portion of alveolar ridge just behind the anterior tooth, and posterior trill in which at palatal crest behind the transverse palatine fold We measured the first and second formant to determine indirectly the position of tongue and calculated speed quotient and the ratio of closing phase to closed phase. Speed quotients of posterior trill were higher than sustained /a/ vowel and anterior trill in 14 times. The ratio of closing phase to dosed phase of posterior trill were lower than the others in 14 times. Mucosa of true vocal folds is vibrated more effectively on posterior trill rather than sustained /a/ vowel and anterior trill. So, when tongue-tip trill is used as a method of voice rehabilitation, we suggest that posterior trill is better in producing effective mucosal vibration

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AN ALGORITHM FOR CLASSIFYING EMOTION OF SENTENCES AND A METHOD TO DIVIDE A TEXT INTO SOME SCENES BASED ON THE EMOTION OF SENTENCES

  • Fukoshi, Hirotaka;Sugimoto, Futoshi;Yoneyama, Masahide
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2009.01a
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    • pp.773-777
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    • 2009
  • In recent years, the field of synthesizing voice has been developed rapidly, and the technologies such as reading aloud an email or sound guidance of a car navigation system are used in various scenes of our life. The sound quality is monotonous like reading news. It is preferable for a text such as a novel to be read by the voice that expresses emotions wealthily. Therefore, we have been trying to develop a system reading aloud novels automatically that are expressed clear emotions comparatively such as juvenile literature. At first it is necessary to identify emotions expressed in a sentence in texts in order to make a computer read texts with an emotionally expressive voice. A method on the basis of the meaning interpretation that utilized artificial intelligence technology for a method to specify emotions of texts is thought, but it is very difficult with the current technology. Therefore, we propose a method to determine only emotion every sentence in a novel by a simpler way. This method determines the emotion of a sentence according to an emotion that words such as a verb in a Japanese verb sentence, and an adjective and an adverb in a adjective sentence, have. The emotional characteristics that these words have are prepared beforehand as a emotional words dictionary by us. The emotions used here are seven types: "joy," "sorrow," "anger," "surprise," "terror," "aversion" or "neutral."

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The Voice Quality Improvement by Bone Conduction Feedback Compensation in Mobile Phone (골전도 피드백 보상에 의한 휴대전화 음질 향상)

  • Park, Hyung-Woo;Lim, Won-Seok;Bae, Myung-Jin
    • The Journal of the Acoustical Society of Korea
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    • v.31 no.6
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    • pp.359-366
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    • 2012
  • Today, people are exposed to the various noisy environments, such as in the buses, subway and supermarkets where there are a lot of people. The noise issue is getting more serious as people want to use portable sound equipment and mobile phones even under this noisy condition. People want to use the portable equipment to exchange the information freely and they set the volume as 15dB higher than the noise around them, which almost reach at 110 dB. That amount of sound can cause noise induced deafness to the users and another issue to the others as additional noise source. A Bone-conduction system can be a solution to reduce noise and enhance voice signal of mobile phone. In this paper, we propose the way of cancelling noise and enhancing speech signal of mobile phones, by installing bone-conduction feedback system with ordinary mobile phones. With this system, we can reduce the environment noise and enhance the voice quality of mobile phones. Using this method, we can enhance the signal by around 17 dB.