Chiung Yao Chen | Chaoyang University of Technology (original) (raw)

Papers by Chiung Yao Chen

Research paper thumbnail of On the Relationship Between the Autocorrelation Function of the Α-Waves on the Left and Right Hemispheres and Subjective Preference for the Reverberation Time of Music Sound Field

Journal of architecture,planning and environmental engineering, 1996

Research paper thumbnail of Delving into Hearing Threshold of the Delay Gap of Initial Reflection in a Room by Using the Response of Cortical Brain Waves

In this study, the apparent variation range of acoustical parameters were investigated in a conce... more In this study, the apparent variation range of acoustical parameters were investigated in a concert hall. The initial time delay gap (ITDG) was evaluated in terms of its just noticeable difference (JND) through two instruments, the cello and the trumpet. Even though the IDTG values were prolonged over the measurements and were not significantly varied, an ITDG range of 22 - 220 ms in increments of 91 steps was produced electro-acoustically in an anechoic chamber with a loudspeaker. The result of JNDc ((delta gap/gap) was rated 0.059 and 0.081 at 50% “different” judgement ranges for the cello and trumpet tracks, respectively. The effective duration of the autocorrection function (ACF) of the continuous brainwaves (CBWs) within the alpha (8-13 Hz) frequency range on the left hemisphere responding to 91-step ITDG increments revealed that the continuous ratio minimum Tauee e of CBW was approximately equal to 0.28 s on the trumpet. The continuous ratios of Tauee e_min ((Tauee e_min_rear ...

Research paper thumbnail of Characterizing Community Noise in Hospital

Proceedings of the ICA congress, 2019

Research paper thumbnail of Effects of Reverberation Time and Sound Source Characteristics on Sound Localization in an Indoor Sound Field

According to the reports by Morimoto (1989), when regarding the influences of the sound localizat... more According to the reports by Morimoto (1989), when regarding the influences of the sound localization of spatial perception in a hall, the reverberation energy (T60=0.3, 0.9s) may be treated as the first reflection energy (with the delay time of 80 and 160 ms). However, the selection of music is exclusively limited to using Wolfgang Amadeus Mozart's Symphony No.41, Movement Ⅳ as a music source. In order to prove that the sensitivities to spatial impression of sound localization depend on the structural characteristics of music, other three sound sources including Motif A (Royal Pavane by Gibbon, τ(subscript e)=127 ms), Motif B (Sinfonietta, Opus 48; Ⅳ movement; Allegro con brio by Arnold, τ(subscript e)=35ms) and Motif S (Speech, female, τ(subscript e)=23 ms) were adopted. According to the sound field design theory described by Ando, the determining factor of an ideal reverberation time length lies in the effective delay of autocorrelation function (τ(subscript e)) of sound sourc...

Research paper thumbnail of Study of Evaluating Indoor Noisiness in Hospitals under Temporal Varieties using Autocorrelation Analysis

People in the hospital require tranquillity more than others and noise may cause greater damages ... more People in the hospital require tranquillity more than others and noise may cause greater damages to the patients. In general hospital buildings, hospitals need to maintain enormous mechanical facilities, which are the main source of noise in hospitals. Noise hazards of 16 general hospitals (single buildings) located in Taiwan were investigated in this study. As the initial stage of the investigation, the heavily trafficked hospital lobbies, including the space of the registration and dispensary counters, were chosen as the investigation objects. A 15-minute equivalent continuous noise level (Leq A) was used to display the possible noise events in the building environment plan of the hospitals. The results indicate that there is a high correlation coefficient (r = 0.76, p < 0.05) between the noise concentration rate of noise events and the scale values of being agitated by noise in lobbies as shown in the results of the noise psychology questionnaires. It worthily notes that autoc...

Research paper thumbnail of Psychological Noisiness of Time-Varying in Community Noise-A Case Study at Hospital Lobbies

In various Taiwanese hospitals, lobby noise was investigated to clarify the relationship between ... more In various Taiwanese hospitals, lobby noise was investigated to clarify the relationship between subjective noisiness and several noise evaluations. Questionnaire surveys were initially conducted to assess noisiness scales. Noise measurements were then conducted during daytime hours in each of the lobbies, and a 15-minute equivalent continuous sound level LAeq obtained. The main sources of lobby noise were conversations, machinery, and medical appliances. Noisiness as deduced from the questionnaire responses was found to be correlated with the minimum LAeq or L90 values, and not the logarithmic average LAeq. Zwicker’s loudness and annoyance showed a better correlation with the noisiness scale for a short term of analysis on electronic roll call. Noisiness also correlated with the temporal variation in noise level (the difference between maximum and minimum LAeq values). The reverberation time was also measured in the hospital lobbies; those with shorter reverberation times showed lo...

Research paper thumbnail of Investigation of the Relationship between Noise Controls and Human Behaviours in the General Hospital Buildings of the Central Taiwan

J. Temporal. Des. Arch. Environ, 2009

Research paper thumbnail of Relationship Between Subjective Preference and the Alpha-Brain Wave in Relation to the Initial Time Delay Gap with Vocal Music

Journal of Sound and Vibration, 2000

Research paper thumbnail of Word Intelligibility in Relation to the Magnitudes of the Interaural Cross-Correlation Function of Mandarin Monosyllables

Previous studies have found that the speech intelligibility of Mandarin monosyllables is in direc... more Previous studies have found that the speech intelligibility of Mandarin monosyllables is in direct correlation to the effective duration of the autocorrelation function (e) of the syllable itself at the same reverberation levels (Chen and Chan, 2006; Chen, 2012). In addition, it has been further found (Chen, 2004) that the evaluation of a sound field is the opposite between the speech transmission index (STI, proposed by Steeneken and Houtgast, 1973) and magnitude of the interaural cross-correlation coefficient (IACC) where the slope of the ceiling was changed in a hall in a constricted range of STI (0.5~0.7). Takaoka et al. (2007) once used noises and utterances in Japanese to examine the influence of a sound field's reverberation time and the IACC on speech articulation. They found that under an IACC condition where the SNR (signal-to-noise ratio) was between 0 dB ~10 dB and reverberation time varied between 0.5s~4.0s, no obvious changes were noticed in speech articulation, an...

Research paper thumbnail of ICSV 14 Cairns • Australia 9-12 July , 2007 EFFECTS OF REVERBERATION TIME AND SOUND SOURCE CHARACTERISTIC TO AUDITORY LOCALIZATION IN AN INDOOR SOUND FIELD

According to the reports by Morimoto (1989) regarding the influences of the sound localization of... more According to the reports by Morimoto (1989) regarding the influences of the sound localization of spatial perception in a hall, the reverberation energy (RT60 = 0.3, 0.9 sec) may be treated as the first reflection energy (delay time = 80, 160ms). However, the selection of music is exclusively limited to using Wolfgang Amadeus Mozart’s Symphony No. 41, Movement IV as a music source. We intended to prove that the sensitivities on sound localization of spatial impression will vary depending on the structural characteristics of music. Therefore, the other three sound sources: Motif A (Royal Pavane by Gibbon, τe = 127 ms), Motif B (Sinfonietta, Opus 48; III movement; Allegro con brio by Arnold, τe = 35 ms) and Speech (female, τe = 23ms) were adopted. According to the sound field design theory described by Ando (1985), the determining factor of an ideal reverberation time length lies in the effective delay of autocorrelation function (τe) of sound sources. The reverberation time of our ex...

Research paper thumbnail of Monitoring time-varying noise levels and perceived noisiness in hospital lobbies

Building Acoustics

The aim of this study was to verify what statistical attributes are effective descriptors of time... more The aim of this study was to verify what statistical attributes are effective descriptors of time-varying noise levels due to road traffic and complex medical routine activities in hospital lobbies. In a psychoacoustic experiment, respondents provided perceived noisiness ratings affected by 12 noise events in hospital lobbies according to the processes recommended by ISO 15666. According to the correlations between subjective and objective survey results, the average LAeq ,15 m induced during the daytime itself was confirmed to be poorly related to subjective noisiness. The three independent variables shown to have the largest effects on perceived noisiness were (1) L min − L max, (2) the effective duration of the normalized autocorrelation function ( τe, h) of all LAeq,15 m from 9:00 a.m. to 5:00 p.m., and (3) the gradient of the cumulative distribution function (0.3–0.7 cumulative rate range). These statistical attributes have been confirmed as useful tools for detecting perceptio...

Research paper thumbnail of Preference Index of the Acoustic Quality Assessment of Sacral Sound Field

Civil Engineering Research Journal

Review and Introduction Modern religions are practiced in places that focus on language, music, t... more Review and Introduction Modern religions are practiced in places that focus on language, music, tales of affection, and worship. Music can convey the concepts and values of the religion and encompass the emotions of the followers. Therefore, the acoustics of the worship must also convey these functions. In this study, the theory of subjective preference for concert hall established by Ando [1] was used to investigate four physical factors in churches. Since church are always thought which is reverberant and a fitting space for music. The factors proposed by Ando [1] are

Research paper thumbnail of The Influence on Cortical Brainwaves in Relation to Word Intelligibility and ASW in Room

Human Auditory System [Working Title]

The influence of indoor speech intelligibility and apparent source width (ASW) on the response of... more The influence of indoor speech intelligibility and apparent source width (ASW) on the response of cortical brainwaves was studied using two variables, the time gap between direct and the first reflection (Δt 1 , ms) and the initial (<80 ms) interaural cross-correlation function (IACC E3). Comparisons were performed based on autocorrelation function (ACF) of continuous brainwave (CBW) and slow vertex response (SVR). The results are: (1) the effective delay time of ACF (τ e) of β-waves (13-30 Hz) in the left hemisphere under changes in Δt 1 was significantly and positively correlated with speech intelligibility (p < 0.001). (2) As ASW increased, the relative amplitude of left hemisphere A (P2-N2) tended to decrease (p < 0.05) in SVRs, while N2 latency tended to increase (p < 0.05); the lateral lemniscus in the auditory nerve was suggested to be the reactive site. (3) With regard to hemispheric specialization in brain, speech intelligibility, the main temporal factor, was found to be controlled by the left hemisphere. A subjective spatial factor, ASW, the relative amplitude of SVR was also found to decrease in the left hemisphere; nevertheless, they are coherent while the N2 latency of SVR significantly prolonged in both left and right hemisphere under changes in IACC E3 .

Research paper thumbnail of On the Analysis of Autocorrelation Function of Α-Waves on the Left and Right Cerebral Hemispheres in Relation to the Delay Time of Single Sound Reflection

Journal of Architecture and Planning (Transactions of AIJ)

To find a relationship between subjeclive preference and α 一 wavcs on Ihe le丘 md right c〔 ：eb： al... more To find a relationship between subjeclive preference and α 一 wavcs on Ihe le丘 md right c〔 ：eb： al hemispheres ， an attempt is made here to analyze the autocorrelation fUnction ( ACF ) of α 一 waves in relation to the delay time ( f ． single so皿 d refieCtion ． 正 t is繝 umed that a simn 缸 repe 重 itive thatUre ( the α 一 wave ge ( 8 -13 Hz ) i∬ tems () f 亀 he effective dura崩on of ACF is related to p 豊 easal1 田 ess or subjec 重 ive prefe 匸 enoe ． The resu】 ts show that 山e effeCtive duration of ACF from the le 血 hemisphere is sign丗 cantly cha ed a rding to the InEEerred delay ( 35 ms ) or 重 he cho dis 血∬ bance ( 245 ms ) condition O く 0． 01 ) ， but not f拍 m 重 he right hemisp血ere． these effects爬 veal the left hemisphere Clominance when orie of the 電 emporal faCtors of the sound field ， the delay time Of refleCtion ， is change ¢ ( i ) ＜ 0， 05 ) ． Key WO 厂ds． ' dekry time ofsingle reflection ， continUOtLS brain wave ， effective deuration of autOcorrelation fit π ctiong σ 一 wave rtVlge

Research paper thumbnail of Contribution of Precisely Apparent Source Width to Auditory Spaciousness

Soundscape Semiotics - Localisation and Categorisation, 2014

Research paper thumbnail of Characterizing Subjective Noisiness in Hospital Lobbies

Archives of Acoustics, 2015

The present study was conducted in the lobbies of 16 Taiwanese urban hospitals to establish what ... more The present study was conducted in the lobbies of 16 Taiwanese urban hospitals to establish what contributes to the degree of noisiness experienced by patients and those accompanying them. Noise level measurements were then conducted by 15 min equivalent sound pressure levels (

Research paper thumbnail of Syllables intelligibility in relation to the autocorrelation and cepstrum model: the case of Chinese in Taiwan

The Journal of the Acoustical Society of America, 2012

The articulation of some special pronunciations of vowel inconsistently raises with the rapid spe... more The articulation of some special pronunciations of vowel inconsistently raises with the rapid speech transmission index (RASTI) tested using monosyllables for Chinese phonics. In the researching of speech intelligibility in room, the factors being considered have to include ...

Research paper thumbnail of On the relationship between the autocorrelation function of continuous brain waves and the subjective preference of the sound field in change of the IACC

The Journal of the Acoustical Society of America, 1996

Research paper thumbnail of Analyses of cortical continuous brain waves in relation to subjective preference of physical environments

The Journal of the Acoustical Society of America, 1998

Alpha rhythm is well known as the most classically neuropsychological attributes of subjective st... more Alpha rhythm is well known as the most classically neuropsychological attributes of subjective states and behavioral manifestations, and it varies noticeablely in the time properties of our surroundings. This report attempts to find the relationships between the subjective preference of time and an autocorrelation analysis in a-waves range in relation to the physical parameters.

Research paper thumbnail of Analyses of continuous brain waves in relation to subjective preference of the sound field

The Journal of the Acoustical Society of America, 1999

Research paper thumbnail of On the Relationship Between the Autocorrelation Function of the Α-Waves on the Left and Right Hemispheres and Subjective Preference for the Reverberation Time of Music Sound Field

Journal of architecture,planning and environmental engineering, 1996

Research paper thumbnail of Delving into Hearing Threshold of the Delay Gap of Initial Reflection in a Room by Using the Response of Cortical Brain Waves

In this study, the apparent variation range of acoustical parameters were investigated in a conce... more In this study, the apparent variation range of acoustical parameters were investigated in a concert hall. The initial time delay gap (ITDG) was evaluated in terms of its just noticeable difference (JND) through two instruments, the cello and the trumpet. Even though the IDTG values were prolonged over the measurements and were not significantly varied, an ITDG range of 22 - 220 ms in increments of 91 steps was produced electro-acoustically in an anechoic chamber with a loudspeaker. The result of JNDc ((delta gap/gap) was rated 0.059 and 0.081 at 50% “different” judgement ranges for the cello and trumpet tracks, respectively. The effective duration of the autocorrection function (ACF) of the continuous brainwaves (CBWs) within the alpha (8-13 Hz) frequency range on the left hemisphere responding to 91-step ITDG increments revealed that the continuous ratio minimum Tauee e of CBW was approximately equal to 0.28 s on the trumpet. The continuous ratios of Tauee e_min ((Tauee e_min_rear ...

Research paper thumbnail of Characterizing Community Noise in Hospital

Proceedings of the ICA congress, 2019

Research paper thumbnail of Effects of Reverberation Time and Sound Source Characteristics on Sound Localization in an Indoor Sound Field

According to the reports by Morimoto (1989), when regarding the influences of the sound localizat... more According to the reports by Morimoto (1989), when regarding the influences of the sound localization of spatial perception in a hall, the reverberation energy (T60=0.3, 0.9s) may be treated as the first reflection energy (with the delay time of 80 and 160 ms). However, the selection of music is exclusively limited to using Wolfgang Amadeus Mozart's Symphony No.41, Movement Ⅳ as a music source. In order to prove that the sensitivities to spatial impression of sound localization depend on the structural characteristics of music, other three sound sources including Motif A (Royal Pavane by Gibbon, τ(subscript e)=127 ms), Motif B (Sinfonietta, Opus 48; Ⅳ movement; Allegro con brio by Arnold, τ(subscript e)=35ms) and Motif S (Speech, female, τ(subscript e)=23 ms) were adopted. According to the sound field design theory described by Ando, the determining factor of an ideal reverberation time length lies in the effective delay of autocorrelation function (τ(subscript e)) of sound sourc...

Research paper thumbnail of Study of Evaluating Indoor Noisiness in Hospitals under Temporal Varieties using Autocorrelation Analysis

People in the hospital require tranquillity more than others and noise may cause greater damages ... more People in the hospital require tranquillity more than others and noise may cause greater damages to the patients. In general hospital buildings, hospitals need to maintain enormous mechanical facilities, which are the main source of noise in hospitals. Noise hazards of 16 general hospitals (single buildings) located in Taiwan were investigated in this study. As the initial stage of the investigation, the heavily trafficked hospital lobbies, including the space of the registration and dispensary counters, were chosen as the investigation objects. A 15-minute equivalent continuous noise level (Leq A) was used to display the possible noise events in the building environment plan of the hospitals. The results indicate that there is a high correlation coefficient (r = 0.76, p < 0.05) between the noise concentration rate of noise events and the scale values of being agitated by noise in lobbies as shown in the results of the noise psychology questionnaires. It worthily notes that autoc...

Research paper thumbnail of Psychological Noisiness of Time-Varying in Community Noise-A Case Study at Hospital Lobbies

In various Taiwanese hospitals, lobby noise was investigated to clarify the relationship between ... more In various Taiwanese hospitals, lobby noise was investigated to clarify the relationship between subjective noisiness and several noise evaluations. Questionnaire surveys were initially conducted to assess noisiness scales. Noise measurements were then conducted during daytime hours in each of the lobbies, and a 15-minute equivalent continuous sound level LAeq obtained. The main sources of lobby noise were conversations, machinery, and medical appliances. Noisiness as deduced from the questionnaire responses was found to be correlated with the minimum LAeq or L90 values, and not the logarithmic average LAeq. Zwicker’s loudness and annoyance showed a better correlation with the noisiness scale for a short term of analysis on electronic roll call. Noisiness also correlated with the temporal variation in noise level (the difference between maximum and minimum LAeq values). The reverberation time was also measured in the hospital lobbies; those with shorter reverberation times showed lo...

Research paper thumbnail of Investigation of the Relationship between Noise Controls and Human Behaviours in the General Hospital Buildings of the Central Taiwan

J. Temporal. Des. Arch. Environ, 2009

Research paper thumbnail of Relationship Between Subjective Preference and the Alpha-Brain Wave in Relation to the Initial Time Delay Gap with Vocal Music

Journal of Sound and Vibration, 2000

Research paper thumbnail of Word Intelligibility in Relation to the Magnitudes of the Interaural Cross-Correlation Function of Mandarin Monosyllables

Previous studies have found that the speech intelligibility of Mandarin monosyllables is in direc... more Previous studies have found that the speech intelligibility of Mandarin monosyllables is in direct correlation to the effective duration of the autocorrelation function (e) of the syllable itself at the same reverberation levels (Chen and Chan, 2006; Chen, 2012). In addition, it has been further found (Chen, 2004) that the evaluation of a sound field is the opposite between the speech transmission index (STI, proposed by Steeneken and Houtgast, 1973) and magnitude of the interaural cross-correlation coefficient (IACC) where the slope of the ceiling was changed in a hall in a constricted range of STI (0.5~0.7). Takaoka et al. (2007) once used noises and utterances in Japanese to examine the influence of a sound field's reverberation time and the IACC on speech articulation. They found that under an IACC condition where the SNR (signal-to-noise ratio) was between 0 dB ~10 dB and reverberation time varied between 0.5s~4.0s, no obvious changes were noticed in speech articulation, an...

Research paper thumbnail of ICSV 14 Cairns • Australia 9-12 July , 2007 EFFECTS OF REVERBERATION TIME AND SOUND SOURCE CHARACTERISTIC TO AUDITORY LOCALIZATION IN AN INDOOR SOUND FIELD

According to the reports by Morimoto (1989) regarding the influences of the sound localization of... more According to the reports by Morimoto (1989) regarding the influences of the sound localization of spatial perception in a hall, the reverberation energy (RT60 = 0.3, 0.9 sec) may be treated as the first reflection energy (delay time = 80, 160ms). However, the selection of music is exclusively limited to using Wolfgang Amadeus Mozart’s Symphony No. 41, Movement IV as a music source. We intended to prove that the sensitivities on sound localization of spatial impression will vary depending on the structural characteristics of music. Therefore, the other three sound sources: Motif A (Royal Pavane by Gibbon, τe = 127 ms), Motif B (Sinfonietta, Opus 48; III movement; Allegro con brio by Arnold, τe = 35 ms) and Speech (female, τe = 23ms) were adopted. According to the sound field design theory described by Ando (1985), the determining factor of an ideal reverberation time length lies in the effective delay of autocorrelation function (τe) of sound sources. The reverberation time of our ex...

Research paper thumbnail of Monitoring time-varying noise levels and perceived noisiness in hospital lobbies

Building Acoustics

The aim of this study was to verify what statistical attributes are effective descriptors of time... more The aim of this study was to verify what statistical attributes are effective descriptors of time-varying noise levels due to road traffic and complex medical routine activities in hospital lobbies. In a psychoacoustic experiment, respondents provided perceived noisiness ratings affected by 12 noise events in hospital lobbies according to the processes recommended by ISO 15666. According to the correlations between subjective and objective survey results, the average LAeq ,15 m induced during the daytime itself was confirmed to be poorly related to subjective noisiness. The three independent variables shown to have the largest effects on perceived noisiness were (1) L min − L max, (2) the effective duration of the normalized autocorrelation function ( τe, h) of all LAeq,15 m from 9:00 a.m. to 5:00 p.m., and (3) the gradient of the cumulative distribution function (0.3–0.7 cumulative rate range). These statistical attributes have been confirmed as useful tools for detecting perceptio...

Research paper thumbnail of Preference Index of the Acoustic Quality Assessment of Sacral Sound Field

Civil Engineering Research Journal

Review and Introduction Modern religions are practiced in places that focus on language, music, t... more Review and Introduction Modern religions are practiced in places that focus on language, music, tales of affection, and worship. Music can convey the concepts and values of the religion and encompass the emotions of the followers. Therefore, the acoustics of the worship must also convey these functions. In this study, the theory of subjective preference for concert hall established by Ando [1] was used to investigate four physical factors in churches. Since church are always thought which is reverberant and a fitting space for music. The factors proposed by Ando [1] are

Research paper thumbnail of The Influence on Cortical Brainwaves in Relation to Word Intelligibility and ASW in Room

Human Auditory System [Working Title]

The influence of indoor speech intelligibility and apparent source width (ASW) on the response of... more The influence of indoor speech intelligibility and apparent source width (ASW) on the response of cortical brainwaves was studied using two variables, the time gap between direct and the first reflection (Δt 1 , ms) and the initial (<80 ms) interaural cross-correlation function (IACC E3). Comparisons were performed based on autocorrelation function (ACF) of continuous brainwave (CBW) and slow vertex response (SVR). The results are: (1) the effective delay time of ACF (τ e) of β-waves (13-30 Hz) in the left hemisphere under changes in Δt 1 was significantly and positively correlated with speech intelligibility (p < 0.001). (2) As ASW increased, the relative amplitude of left hemisphere A (P2-N2) tended to decrease (p < 0.05) in SVRs, while N2 latency tended to increase (p < 0.05); the lateral lemniscus in the auditory nerve was suggested to be the reactive site. (3) With regard to hemispheric specialization in brain, speech intelligibility, the main temporal factor, was found to be controlled by the left hemisphere. A subjective spatial factor, ASW, the relative amplitude of SVR was also found to decrease in the left hemisphere; nevertheless, they are coherent while the N2 latency of SVR significantly prolonged in both left and right hemisphere under changes in IACC E3 .

Research paper thumbnail of On the Analysis of Autocorrelation Function of Α-Waves on the Left and Right Cerebral Hemispheres in Relation to the Delay Time of Single Sound Reflection

Journal of Architecture and Planning (Transactions of AIJ)

To find a relationship between subjeclive preference and α 一 wavcs on Ihe le丘 md right c〔 ：eb： al... more To find a relationship between subjeclive preference and α 一 wavcs on Ihe le丘 md right c〔 ：eb： al hemispheres ， an attempt is made here to analyze the autocorrelation fUnction ( ACF ) of α 一 waves in relation to the delay time ( f ． single so皿 d refieCtion ． 正 t is繝 umed that a simn 缸 repe 重 itive thatUre ( the α 一 wave ge ( 8 -13 Hz ) i∬ tems () f 亀 he effective dura崩on of ACF is related to p 豊 easal1 田 ess or subjec 重 ive prefe 匸 enoe ． The resu】 ts show that 山e effeCtive duration of ACF from the le 血 hemisphere is sign丗 cantly cha ed a rding to the InEEerred delay ( 35 ms ) or 重 he cho dis 血∬ bance ( 245 ms ) condition O く 0． 01 ) ， but not f拍 m 重 he right hemisp血ere． these effects爬 veal the left hemisphere Clominance when orie of the 電 emporal faCtors of the sound field ， the delay time Of refleCtion ， is change ¢ ( i ) ＜ 0， 05 ) ． Key WO 厂ds． ' dekry time ofsingle reflection ， continUOtLS brain wave ， effective deuration of autOcorrelation fit π ctiong σ 一 wave rtVlge

Research paper thumbnail of Contribution of Precisely Apparent Source Width to Auditory Spaciousness

Soundscape Semiotics - Localisation and Categorisation, 2014

Research paper thumbnail of Characterizing Subjective Noisiness in Hospital Lobbies

Archives of Acoustics, 2015

The present study was conducted in the lobbies of 16 Taiwanese urban hospitals to establish what ... more The present study was conducted in the lobbies of 16 Taiwanese urban hospitals to establish what contributes to the degree of noisiness experienced by patients and those accompanying them. Noise level measurements were then conducted by 15 min equivalent sound pressure levels (

Research paper thumbnail of Syllables intelligibility in relation to the autocorrelation and cepstrum model: the case of Chinese in Taiwan

The Journal of the Acoustical Society of America, 2012

The articulation of some special pronunciations of vowel inconsistently raises with the rapid spe... more The articulation of some special pronunciations of vowel inconsistently raises with the rapid speech transmission index (RASTI) tested using monosyllables for Chinese phonics. In the researching of speech intelligibility in room, the factors being considered have to include ...

Research paper thumbnail of On the relationship between the autocorrelation function of continuous brain waves and the subjective preference of the sound field in change of the IACC

The Journal of the Acoustical Society of America, 1996

Research paper thumbnail of Analyses of cortical continuous brain waves in relation to subjective preference of physical environments

The Journal of the Acoustical Society of America, 1998

Alpha rhythm is well known as the most classically neuropsychological attributes of subjective st... more Alpha rhythm is well known as the most classically neuropsychological attributes of subjective states and behavioral manifestations, and it varies noticeablely in the time properties of our surroundings. This report attempts to find the relationships between the subjective preference of time and an autocorrelation analysis in a-waves range in relation to the physical parameters.

Research paper thumbnail of Analyses of continuous brain waves in relation to subjective preference of the sound field

The Journal of the Acoustical Society of America, 1999