Hironori Doi

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—The voice quality (identity) of singing voices is usually fixed in each singer. To overcome this limitation and enable singers to freely change their voice quality using signal-processing technologies, we propose a singing voice conversion method based on many-to-many eigenvoice conversion (EVC) that can convert the voice quality of an arbitrary source(More)
In this paper, we present novel speaking-aid systems based on one-to-many eigenvoice conversion (EVC) to enhance three types of alaryngeal speech: esophageal speech, electrolaryngeal speech, and body-conducted silent electrolaryngeal speech. Although alaryngeal speech allows laryngectomees to utter speech sounds, it suffers from the lack of speech quality(More)
SUMMARY The perceived age of a singing voice is the age of the singer as perceived by the listener, and is one of the notable characteristics that determines perceptions of a song. In this paper, we describe an investigation of acoustic features that have an effect on the perceived age, and a novel voice timbre control technique based on the perceived age(More)
In this study, we evaluate our proposed methods for enhancing alaryngeal speech based on statistical voice conversion techniques. Voice conversion based on a Gaussian mixture model has been applied to the conversion of alaryngeal speech into normal speech (ALto Speech). Moreover, one-to-many eigenvoice conversion (EVC) has also been applied to ALto Speech(More)
In this paper, we investigate the acoustic features that can be modified to control the perceptual age of a singing voice. Singers can sing expressively by controlling prosody and vocal timbre, but the varieties of voices that singers can produce are limited by physical constraints. Previous work has attempted to overcome this limitation through the use of(More)
To retrieve relevant documents from an enormous document collection, we usually utilize the similarity or distance measure between a query and the documents , or apply document clustering techniques to the document collection and partition it into relevant document groups. For patent retrieval, however, it is difficult to retrieve documents by using query(More)
This paper presents a novel method of enhancing esophageal speech using statistical voice conversion. Esophageal speech is one of the alternative speaking methods for laryngectomees. Although it doesn't require any external devices, generated voices sound unnatural. To improve the intelligibility and naturalness of esophageal speech, we propose a voice(More)
This paper describes a voice quality control method in statistical esophageal speech enhancement. Esophageal speech is produced by one of the alternative speaking methods for laryngectomees. Its naturalness and intelligibility are much lower than those of natural voices and its voice quality sounds similar even if uttered by different laryngectomees. These(More)