An experimental study of synthesized speech intelligibility using text created by telecommunication device for the deaf (TDD) users

The preset paper proposes a novel acoustic diffuser which we call cross rib diffuser (CRD) and investigates its acoustical performance in rooms experimentally. CRD consists of overlapping two one-dimensional periodic rib diffuser (OPRD) with different structural configurations. CRD can achieve high scattering coefficient with wider frequency band than OPRD. Moreover, unlike other diffusers with high scattering property such as metadiffuser and two-dimensional quadratic diffuser, CRD keeps simple and familiar design of OPRD suitable for use in various architectural spaces. In the paper, we firstly evaluated random-incidence scattering coefficient of CRD using 1/5 scaled reverberation room. Then, random-incidence absorption coefficient was measured in 1/1 reverberation room. Finally, an implementation experiment was conducted to examine applicability of CRD in improving acoustics in small meeting room with small absorption treatments. The results indicated that CRD reduced EDT and reverberation time, and increased D50 more than JND values. Additionally, CRD improved reverberation and speech intelligibility more significantly than OPRD with same installation area.

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Synthesized speech intelligibility among native speakers and non-native speakers of English

Augmentative and Alternative Communication ◽

10.1080/00498250600718555 ◽

2006 ◽

Vol 22 (4) ◽

pp. 258-268 ◽

Cited By ~ 11

Author(s):

Diane Mayasari Alamsaputra ◽

Kathryn J. Kohnert ◽

Benjamin Munson ◽

Joe Reichle

Keyword(s):

Speech Intelligibility ◽

Native Speakers ◽

Synthesized Speech ◽

Native Speakers Of English

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Synthesized speech intelligibility and persuasion: Speech rate and non-native listeners

Computer Speech & Language ◽

10.1016/j.csl.2007.03.001 ◽

2007 ◽

Vol 21 (4) ◽

pp. 641-651 ◽

Cited By ~ 19

Author(s):

Caroline Jones ◽

Lynn Berry ◽

Catherine Stevens

Keyword(s):

Speech Intelligibility ◽

Speech Rate ◽

Synthesized Speech

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Synthesized Speech Intelligibility and Early Preschool-Age Children: Comparing Accuracy for Single-Word Repetition With Repeated Exposure

American Journal of Speech-Language Pathology ◽

10.1044/1058-0360(2012/11-0020) ◽

2012 ◽

Vol 21 (4) ◽

pp. 293-301 ◽

Cited By ~ 1

Author(s):

Carrie L. Pinkoski-Ball ◽

Joe Reichle ◽

Benjamin Munson

Keyword(s):

Speech Intelligibility ◽

Repeated Exposure ◽

Preschool Age ◽

Single Word ◽

Word Repetition ◽

Synthesized Speech ◽

Preschool Age Children

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Subjective and objective measurement of synthesized speech intelligibility in modern telephone conditions

Speech Communication ◽

10.1016/j.specom.2015.04.001 ◽

2015 ◽

Vol 71 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Peter Počta ◽

John G. Beerends

Keyword(s):

Speech Intelligibility ◽

Objective Measurement ◽

Synthesized Speech

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Unified Speech-Like Interference for Active Protection of Speech Information

Informatics and Automation - Информатика и автоматизация ◽

10.15622/ia.2020.19.5.4 ◽

2020 ◽

Vol 19 (5) ◽

pp. 991-1017

Author(s):

Vladimir Avdeev ◽

Viktor Trushin ◽

Mihail Kungurov

Keyword(s):

Probability Density ◽

Speech Intelligibility ◽

Spectral Power ◽

Russian Language ◽

Statistical Characteristics ◽

Probability Density Distribution ◽

Signal To Noise ◽

Synthesized Speech ◽

Speech Information ◽

Sound Files

The paper considers the possibility of creating a speech-like interference for the means of vibro-acoustic protection of speech information based on tables of syllables and words of the Russian language. The choice of research directions and experimental conditions is substantiated: synthesis of sound files by random sampling of speech elements from a database, research of spectra of synthesized noise, algorithm for creating interference of the “speech choir” type, study of autocorrelation functions of synthesized speech-like interference, as well as their probability distribution density. It is shown that the spectral and statistical characteristics of the synthesized speech-like interference type "speech choir" of five voices are close to similar characteristics of real speech signals. At the same time, the speech choir was formed by averaging the instantaneous values of temporary realizations of sound files. It is shown that the spectral power density of the speech-like interference of the “speech choir” type practically is not changed with the number of averaged “voices” starting from five. The probability density distribution of the speech-like interference value with an increase in the number of voices in the “speech choir” approaches the normal law (unlike a real speech signal whose probability density is close to the Laplace distribution). Evaluation of the autocorrelation function gave a correlation interval of several milliseconds. The articulation tests of speech intelligibility using synthesized speech-like interference with different signal-to-noise ratios showed the possibility of reducing the integral noise level by 12-15 dB compared to noise-like interference. The dependencies of verbal intelligibility on the integral signal-to-noise ratio are constructed on the basis of polynomial and piecewise linear approximations. A preliminary assessment of a possible impact of speech-like interference on the psycho-emotional state of a person was performed. The direction of further research on increasing the efficiency of algorithms for generating speech-like interference is discussed.

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Context, Repetition and Synthesized Speech Intelligibility

Proceedings of the Human Factors Society Annual Meeting ◽

10.1177/154193128703100907 ◽

1987 ◽

Vol 31 (9) ◽

pp. 961-965 ◽

Cited By ~ 1

Author(s):

Monica A. Merva ◽

Beverly H. Williges

Keyword(s):

Speech Intelligibility ◽

Speech Rate ◽

Error Rates ◽

Synthetic Speech ◽

Context Information ◽

Subjective Ratings ◽

Rule Based ◽

Situational Context ◽

Synthesized Speech ◽

Transcription Error

Two studies were conducted to explore the effects of various parameters on rule-based synthetic speech intelligibility. Experiment I examined the effect of situational context clues and speech rate on synthesized speech intelligibility. Subjects who received pragmatic context information prior to each message had transcription error rates 50% lower than those who received no context information. Speech rates of 250 words per minute (wpm) yielded significantly more transcription errors than rates of 180 wpm. In Experiment II, the effects of speech rate, message repetition, and location of information in a message were examined. Transcription accuracy was best for messages spoken at 150 or 180 wpm and for messages repeated either twice or three times. Words at the end of messages were transcribed more accurately than words at the beginning of messages. Subjective ratings indicated that subjects were aware of errors when incorrectly transcribing a message even though no feedback was provided.

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