Patent ID: 7379873
Filing Date: 2008-05-27
Classification: G10L

Abstract:
1. A singing voice synthesizing apparatus, comprising: a singing voice information input device that inputs singing voice information for synthesizing a singing voice; a phoneme database that stores voice synthesis unit data; a selector that selects the voice synthesis unit data stored in the phoneme database in accordance with the singing voice information; a timbre transformation parameter input device that inputs a timbre transformation parameter for transforming timbre, the timbre transformation parameter including a coefficient α indicating whether a singing voice is made to be feminine or masculine; a mapping function generator that generates, in accordance with the coefficient included in the timbre transformation parameter, a mapping function defined by a following equation (1) where fout is an output frequency, fs is a sampling frequency, fin is an input frequency and α is the coefficient indicating whether the singing voice is made to be feminine or masculine; and a singing voice synthesizer that generates a spectrum envelope based on the selected voice synthesis unit data, transforms the generated spectrum envelope in accordance with the mapping function generated by using a local peak frequency of the spectrum envelope as the input frequency, and generates a synthetic singing voice of which character is changed by using the transformed spectrum envelope.