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Sound synthesizing apparatus, sound processing apparatus, and sound synthesizing method

A sound synthesis and sound processing technology, applied in speech synthesis, sound-generating equipment, speech analysis, etc., can solve problems such as huge storage capacity and sound quality degradation

Inactive Publication Date: 2013-09-11
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there will be a problem that regular characteristic changes (such as changes in amplitude or period) appear on the time length of the sound waveform as a cycle, and this will degrade the sound quality perceived by the listener
Although the above-mentioned problem can be solved by securing a sufficient length of time for each sound waveform so that the sound waveform does not have to be repeated, storing the sound waveform for a long time requires a huge memory capacity

Method used

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  • Sound synthesizing apparatus, sound processing apparatus, and sound synthesizing method
  • Sound synthesizing apparatus, sound processing apparatus, and sound synthesizing method
  • Sound synthesizing apparatus, sound processing apparatus, and sound synthesizing method

Examples

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no. 1 example

[0053] figure 1 is a block diagram of the sound synthesis device 100 according to the first embodiment of the present invention. The sound synthesis device 100 is a sound processing device that generates sounds (such as speech or singing voices) to be synthesized by section connection type sound synthesis, such as figure 1 As shown, the sound synthesis device 100 is realized by a computer system including an arithmetic processing unit 10 , a storage device 12 , an input device 14 , a display device 16 and a sound emission device 18 .

[0054]The arithmetic processing unit 10 (CPU) executes the program PGM1 stored in the storage device 12 to realize various functions (display controller 22, information generator 24, segment selector 26 and Vocoder 28). The sound signal SOUT is an acoustic signal representing the waveform of the sound to be synthesized. Configurations may be employed: a configuration in which the functions of the arithmetic processing unit 10 are distributed ...

no. 2 example

[0082] Figure 7 is a block diagram of the sound processing device 200 according to the second embodiment of the present invention. The sound processing device 200 generates M unit waveforms u[1] to u[M] for generating the segment waveform Q of fixed phonemes in the sound synthesis device 100 of the first embodiment.

[0083] Such as Figure 7 As shown, the sound processing device 200 is realized by a computer system including an arithmetic processing unit 50 and a storage device 52 . The storage device 52 stores the program PGM2 run by the arithmetic processing unit 50 and various information stored by the arithmetic processing unit 50 . For example, a sound waveform Vb that is a material of the M unit waveforms u[1] to u[M] is stored in the storage device 52 . The sound waveform Vb is a sample sequence representing a sound, which is a time-continuous sounding segment with sound. For example, a sound waveform Vb picked up by a sound pickup device (not shown) connected to ...

no. 4 example

[0109] Figure 13 is a block diagram of the waveform corrector 64 in the fourth embodiment. Such as Figure 13 As shown, the waveform corrector 64 of the fourth embodiment has a configuration in which a distortion corrector 78 is added to the elements (amplitude corrector 72 , period corrector 74 , and phase corrector 76 ) shown in the above-described embodiments.

[0110] When the period corrector 74 expands or compresses the period T[m] of the unit waveform yA[m] to the time length T0, the peak-to-peak value A[m] of the unit waveform yB[m] will be expanded or compressed according to the time axis The degree varies based on peak-to-peak A0 after correction by amplitude corrector 72 (before correction by period corrector 74). That is, the unit waveform yB[m] is distorted after being corrected by the period corrector 74 . Specifically, the longer the time length T0 of the unit waveform yB[m] after being corrected by the period corrector 74 is (the higher the degree of extens...

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Abstract

The invention provides a sound synthesizing apparatus, a sound processing apparatus, and a sound synthesizing method. The sound synthesizing apparatus includes a waveform storing section which stores a plurality of unit waveforms extracted from different positions, on a time axis, of a sound waveform indicating a voiced sound, and a waveform generating section which generates a synthesized waveform by arranging the plurality of unit waveforms on the time axis.

Description

technical field [0001] The present invention relates to techniques for synthesizing sounds (speech or singing) using sound fragments. Background technique [0002] Segment connection type sound synthesis has been proposed in which a sound specified as a sound synthesis target (hereinafter referred to as “sound to be synthesized”) is generated by connecting a plurality of sound waveforms extracted in advance. For example, according to the technology of JP-A-2007-240564, the pre-extracted sound waveform (segment data) is stored in the storage device for each sound segment, and the phonetic text (such as lyrics) and concatenate them together to generate the sound signal of the sound to be synthesized. [0003] According to the technique of JP-A-2007-240564, when a time length exceeding a sound waveform stored in a storage device is specified as the duration of a sound to be synthesized, the sound waveform is repeated (looped) to generate a sound signal. Therefore, there will ...

Claims

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Application Information

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IPC IPC(8): G10K15/12
CPCG10H1/125G10H7/008G10H7/02G10H2220/126G10H2250/035G10H2250/455G10H2250/471G10L13/07G10L15/22G10L25/93
Inventor 嘉山启
Owner YAMAHA CORP
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