Cong Zheng (Synthesizer V Studio)

* Digital (Dreamtonics Intl.)
* (Taobao)

* Dreamtonics (International)
* Dreamtonics (Intl.) (Bundle Set)
* (Mainland China)
* Dreamtonics (Mainland China) (Bundle Set)

**This article is about the Synthesizer V Studio software known as a voice database. If you are looking for the Synthesizer V concept then click here.**

## History

On November 23, 2022, Dreamtonics posted a poem on bilibili along with an announcement that a new song was expected for November 24 at 16:00 GMT+8. Details were not specified but the poem seemed to describe a band, with the singer seeming to be portrayed as mighty and commanding, hinting at a new voice database. The following day, Dreamtonics announced the development of two new voice databases, a male and female pair known as Xuan Yu and Cong Zheng. Both received their own individual demos. The release date was not yet known but was said to be in the near future. Cong Zheng released simultaneously on Dreamtonics International, Taobao, and WeChat Mini Program on December 12. From then until December 25, Cong Zheng and Xuan Yu would be available at a discounted price via Taobao and WeChat. Individually, their discounted price was set to 479 yuan compared to the regular 599 yuan. For their own bundles with the Synthesizer V Studio Pro editor, the discount price was set to 899 yuan compared to the regular 999 yuan.

### Updates

Cong Zheng AI v101b1 - April 18, 2023
A free update for Cong Zheng was released following the Synthesizer V Studio 1.9.0b1 update. This implemented the new rap feature available for the English and Mandarin languages. Cantonese Chinese was added to the Cross-lingual Singing Synthesis feature as well as general improvements to the overall function, resulting in more accurate pronunciation that sounds closer to a native speaker when singing foreign words.

Cong Zheng AI v101b2 - May 23, 2023
A free update for Cong Zheng was released following the Synthesizer V Studio 1.9.0b2 update. This version of the vocal allowed for compatibility with the engine's second beta, which focused on rectifying several design issues identified by the user base in the 1.9.0b1 post-release survey.

Cong Zheng AI v101 - June 21 2023
Final version update compatible for Synthesizer V Studio 1.9.0 and enables Cong Zheng to use the rap feature (English and Mandarin Chinese only) and allow for Cantonese Chinese Cross-lingual Singing Synthesis if the beta versions were not installed previously.

Cong Zheng AI v102b1 - August 2, 2023 A free update for Cong Zheng was released following the Synthesizer V Studio 1.10.0b1 update. This enhanced pitch generation by utilizing Reinforcement Learning from Human Feedback (RLHF), translating to fewer off-key errors, making better use of vibrato, and creating more expressive transitions between notes. This also allowed for the use of the new "Enhancement" slider in the AI Retakes panel, which controlled the level of changes introduced by RLHF. For Synthesizer V Studio Pro users, feedback submission was enabled, allowing users to consensually share their preferred takes with only Dreamtonics for research and development purposes, where models trained with this feedback would be deployed in future voice database updates. Users may also opt out of this feature if undesired.

Cong Zheng AI v102b2 - September 28, 2023 A free update for Cong Zheng was released following the Synthesizer V Studio 1.10.0b2 update, which was the second beta version following version 1.10.0b1 that introduced enhancements to voice databases and integrated the latest user feedback via Reinforcement Learning from Human Feedback (RLHF). Regarding the editor, numerous reported issues were addressed for a more fluid experience. A new generation of pitch models were trained using the extensive feedback from users over the past month, and the new models offered greater accuracy in voice timbre reproduction, as well as a reduction in mispronunciations. Dreamtonics also focused on issues from the previous beta release that made Vocal Modes seem less distinct on certain vocals, ensuring clearer differentiation in the 1.10.0b2 update. The latest update also introduced a new feature in the Note Properties Panel that allowed for even division of a note into multiple syllables, proving to be a useful tool for songs with faster tempos.

Cong Zheng AI v102 - October 19, 2023 Final version update compatible for Synthesizer V Studio 1.10.0 and enables Cong Zheng to use Reinforcement Learning from Human Feedback (RLHF) as well as other enhancements (as listed in v102b1 and v102b2's notes) if the beta version was not installed previously.

Cong Zheng AI v103 - October 26, 2023 A free update for Cong Zheng was released that added support for the Japanese language to the rap feature.

Cong Zheng AI v104b1 - December 18, 2023
A free update for Cong Zheng was released following the Synthesizer V Studio 1.11.0b2 update. This implemented support for the Spanish language in the Cross-Lingual Singing Synthesis feature.

## Voice Database Information

### Voice Databases

Product Information
**Optimum**

  **Genre:** Rock
**Versions**

  **Lite Version/FLT Available?:** No  **Starter Pack Available?:** Yes  **Web Version Available?:** No
**Package details** as noted:

Cong Zheng is a feminine Mandarin Chinese voice database. As expected of an AI voice database, this enables her to sing with a more human-like, natural, and realistic voice. She is a synthetic voice created with the image of a rock singer, a first attempt for Dreamtonics, and was described to have a bold and emotive voice.
**Vocal traits** as noted:

* Cong Zheng's voice was described to have a bright, gutsy tone and strong, energetic voice.
* She was noted to be suitable for works with strong rhythms and orchestration, and she can maintain the mood and tone of the song with complex vocal details, bringing an emotional performance. She was made to capture the strong impression left by female Chinese rock singers, balancing emotional sincerity and power.
* Her powerful voice was based in a bright modal register, which extended to the upper soprano range and a smooth and natural falsetto. It was easy for her to maintain her emotive vocal style in stronger songs, quickly adapting to other genres. It's considered to be multifaceted and full of potential.
* With Diffusion Probabilistic Models (DPM), Cong Zheng can sing more realistically through changes in volume and breath, further enriching singing details, making each singing unique, and providing creators with more options. Through this mode, she can use AI Retakes to create multiple "takes" of a sung section to find an ideal vocal without the need for "laborious tuning". This feature is only available in the Synthesizer V Studio Pro Editor.

**Phonetic notes** as noted:

* Phoneme format: X-SAMPA
* Through Cross-lingual Singing Synthesis, Cong Zheng can sing in not only Mandarin Chinese but also in English and Japanese. Since the release of her v101b1 update on April 18, 2023, she can also sing in Cantonese Chinese with this feature; since her v104b1 update on December 18, she can also sing in Spanish with this feature. Cross-lingual Singing Synthesis is only available in the Synthesizer V Studio Pro Editor.

**Vocal Modes** as noted (Synthesizer V Studio Pro Editor only):

* Cong Zheng comes with six variations:
	+ "Gentle"
	+ "Closed"
	+ "Vivid"
	+ "Soft"
	+ "Solid"
	+ "Powerful"

**License agreements** as noted:

* Dreamtonics Co., Ltd.'s End User License Agreement - Japanese
* Dreamtonics Co., Ltd.'s End User License Agreement - English
* Dreamtonics Co., Ltd.'s End User License Agreement - Simplified Chinese

**Voice database sample**

## References

1. ↑ https://weibo.com/7752303641/MgvVUdzd6
2. ↑ https://twitter.com/dreamtonics\_en/status/1602226838583267329
3. ↑ https://t.bilibili.com/738722619768963109
4. ↑ https://dreamtonics.com/synthesizer-v-studio-1-9-0b1-update-rap-cantonese-and-more/
5. ↑ https://twitter.com/dreamtonics\_en/status/1648235081608343552
6. ↑ https://dreamtonics.com/synthesizer-v-studio-1-9-0b2-update/
7. ↑ https://twitter.com/dreamtonics\_en/status/1660888307482656771
8. ↑ https://dreamtonics.com/synthesizer-v-studio-1-9-0-final-update/
9. ↑ https://twitter.com/dreamtonics\_en/status/1671427830629154816
10. ↑ https://twitter.com/dreamtonics\_en/status/1686648078571655168
11. ↑ https://t.bilibili.com/825177687051993121
12. ↑ https://dreamtonics.com/synthesizer-v-studio-1-10-0b1-update-enhancing-pitch-generation-with-user-feedback/
13. ↑ https://twitter.com/dreamtonics\_en/status/1707304150059639108
14. ↑ https://dreamtonics.com/synthesizer-v-studio-1-10-0b2-update/
15. ↑ https://dreamtonics.com/synthesizer-v-studio-1-10-0-final-update/
16. ↑ https://dreamtonics.com/synthesizer-v-studio-1-11-0b2-update/
17. ↑ https://space.bilibili.com/593592382/favlist?fid=1655788882 - These songs were featured in an official bilibili playlist featuring demos and recommended songs. Certain users were invited to create songs using earlier versions of the voice database and release the songs in sequence after the product's release as a complement to official demo tracks. It should also be noted that certain songs may not be involved with the early invitation and were added based on the company's preference. Only songs that feature Cong Zheng as a main vocalist would be added to this demo table.