VOA科学技术2024--OpenAI Introduces Voice Cloning Tool, But Waits for Public Release

ChatGPT developer OpenAI has introduced a new tool that it says can reproduce human voices with just a short audio sample.

The tool is among several developed by technology companies that aim to clone voices with a high level of exactness.

The system is called Voice Engine. OpenAI released details about Voice Engine on March 29. The company also released some examples of how the tool performs.

The company explained in a statement that the system uses written instructions and a 15-second audio sample to produce, or generate, "natural-sounding speech" in the voice of any speaker.

OpenAI said it has been working on developing the tool since late 2022. It plans to continue developing it before releasing it to the public. The company said the delayed release represents "a cautious and informed" effort to prevent possible misuse¹.

OpenAI said it began testing Voice Engine "with a small group of trusted partners." This testing aims to help company officials decide how to improve the tool's safety and learn how it can "be used for good" across different industries.

There have already been highly publicized examples of false, or fake, voice recordings³ that sound like well-known people and politicians.

One such example was an AI-manufactured voice claiming to belong to U.S. President Joe Biden. The voice was turned into a message that was sent by telephone to voters earlier this year in the state of New Hampshire.

In the fake audio, Biden appears to try to urge voters not to take part in presidential primary voting. Election officials in New Hampshire are still investigating the incident.

OpenAI's statement identified such election risks. "We recognize that generating speech that resembles people's voices has serious risks, which are especially top of mind in an election year."

There have been other examples of so-called "deepfakes" being used in political campaigns around the world. A "deepfake" is a piece of audio or video created to make it appear that people in it are saying or doing things that they never did.

OpenAI said it is currently discussing how to limit these and other risks of such voice cloning systems. Technology experts have also warned such tools can be used to carry out financial crimes. For example, voices can be recorded and then reproduced to represent another individual in an effort to carry out fraud.

The company said it has been in contact with U.S. and international partners "from across government, media, entertainment, education, civil society and beyond." The aim is to get advice from people in these groups about the best ways to develop and deploy⁴ the system, OpenAI said.

OpenAI said its early Voice Engine testers have agreed not to represent a person without their permission and to clearly state that the voices are produced by AI. The company is best known for its launch of the AI-powered ChatGPT tool, which was launched in November 2022.

There are several other companies developing similar voice cloning tools. One of the most widely known is called Descript. The company explains on its website the AI-powered system can clone any person's voice with a 60-second audio sample.

Descript also offers other services involving audio and video production. The company's website says users can choose a free plan that includes up to 1,000 words of voice cloning. For $24, users can get unlimited⁵ voice generation, Descript said.

OpenAI listed several possible uses for the technology tool. These include providing reading assistance to non-readers or children, supporting individuals who cannot speak, and helping⁶ patients recover their voice.

The company said its Voice Engine system can work in several languages. One example of such use is taking an English voice recording² and producing a new audio version in another language. In an example released online, OpenAI demonstrated a person's voice and style of speaking can remain the same in other targeted languages.

Words in This Story

sample - n. a small amount of something that gives you information about the thing it was taken from

clone - v. to create something that is very similar to something else

instructions - n. advice and information about how to do or use something

cautious - adj. taking care to avoid risks or danger

resemble - v. to look like or be like someone or something

top of mind - idiom. something that occupies a big part of a person's thoughts

fraud - n. the crime of doing something illegal in order to get money

style - n. a way of doing something that is typical of a particular person, group, place, etc.

1 misuse   

n.误用，滥用；vt.误用，滥用

参考例句：

• It disturbs me profoundly that you so misuse your talents.你如此滥用自己的才能，使我深感不安。
• He was sacked for computer misuse.他因滥用计算机而被解雇了。

2 recording   

n.录音，记录

参考例句：

• How long will the recording of the song take?录下这首歌得花多少时间？
• I want to play you a recording of the rehearsal.我想给你放一下彩排的录像。

3 recordings   

n.记录( recording的名词复数 )；录音；录像；唱片

参考例句：

• a boxed set of original recordings 一套盒装原声录音带
• old jazz recordings reissued on CD 以激光唱片重新发行的老爵士乐

4 deploy   

v.（军）散开成战斗队形，布置，展开

参考例句：

• The infantry began to deploy at dawn.步兵黎明时开始进入战斗位置。
• The president said he had no intention of deploying ground troops.总统称并不打算部署地面部队。

5 unlimited   

adj.无限的，不受控制的，无条件的

参考例句：

• They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。
• There is no safety in unlimited technological hubris.在技术方面自以为是会很危险。

6 helping   

n.食物的一份&adj.帮助人的，辅助的

参考例句：

• The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
• By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。