49 lines
2.7 KiB
Markdown
49 lines
2.7 KiB
Markdown
# Scope of Inclusion
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CVSA contains many aspects of Chinese Vocal Synthesis, including songs, albums, artists (publisher, manipulators,
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arranger, etc), singers and voice engines / voicebanks. 
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For a **song**, it must meet the following conditions to be included in CVSA:
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### Category 30
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In principle, the songs must be featured in a video that is categorized under the VOCALOID·UTAU (ID 30) category in
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[Bilibili](https://en.wikipedia.org/wiki/Bilibili) in order to be observed by our
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[automation program](../architecure/overview.md#crawler). We welcome editors to manually add songs that have not been
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uploaded to bilibili / categorized under this category.
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#### NEWS
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Recently, Bilibili seems to be offlining the sub-category. This means the VOCALOID·UTAU category can no longer be
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entered from the frontend, and producers can no longer upload videos to this category (instead, they can only choose the
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parent category "Music"). 
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According to our experiments, Bilibili still retains the code logic of sub-categories in the backend, and newly
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published songs may still be in the VOCALOID·UTAU sub-category, and the related APIs can still work normally. However,
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there are [reports](https://www.bilibili.com/opus/1041223385394184199) that some of the new songs have been placed under
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the "Music General" sub-category.\
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We are still waiting for Bilibili's follow-up actions, and in the future, we may adjust the scope of our automated
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program's crawling.
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### At Leats One Line of Chinese / Chinese Virtual Singer
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The lyrics of the song must contain at least one line in Chinese. Otherwise, if the lyrics of the song do not contain
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Chinese, it will only be included in the CVSA only if a Chinese virtual singer has been used.
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We define a **Chinese virtual singer** as follows:
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1. The singer primarily uses Chinese voicebank (i.e. the most widely used voickbank for the singer is Chinese)
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2. The singer is operated by a company, organization, individual or group located in Mainland China, Hong Kong, Macau or
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Taiwan.
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### Using Vocal Synthesizer
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To be included in CVSA, at least one line of the song must be produced by a Vocal Synthesizer (including harmony
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vocals).
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We define a vocal synthesizer as a software or system that generates synthesized singing voices by algorithmically
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modeling vocal characteristics and producing audio from input parameters such as lyrics, pitch, and dynamics,
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encompassing both waveform-concatenation-based (e.g., VOCALOID, UTAU) and AI-based (e.g., Synthesizer V, ACE Studio)
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approaches, **but excluding voice conversion tools that solely alter the timbre of pre-existing recordings** (e.g.,
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[so-vits svc](https://github.com/svc-develop-team/so-vits-svc)).
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