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arXiv 2412.02612cs.CLcs.SDeess.AS

GLM-4-Voice:迈向智能且类人的端到端语音聊天机器人

GLM-4-Voice: Towards Intelligent and Human-Like End-to-End Spoken Chatbot

Tsinghua University(清华大学)

Aohan Zeng, Zhengxiao Du, Mingdao Liu, Kedong Wang, Shengmin Jiang, Lei Zhao, Yuxiao Dong, Jie Tang

AI总结:

本文提出端到端双语语音聊天机器人 GLM-4-Voice,通过低比特率语音分词器、语音-文本交错预训练与会话微调,实现实时、富有情感且高质量的类人语音对话。

摘要:

我们推出 GLM-4-Voice,这是一款智能且类人的端到端语音聊天机器人。它支持中文和英文,可进行实时语音对话,并能根据用户指令变化情感、语调、语速和方言等声音细节。GLM-4-Voice 使用一种超低比特率(175bps)、单码本、帧率为 12.5Hz 的语音分词器;该分词器源自自动语音识别(ASR)模型,通过在编码器中引入向量量化瓶颈得到。为高效地将知识从文本模态迁移到语音模态,我们使用 text-to-token 模型,从已有文本预训练语料中合成语音-文本交错数据。我们从预训练文本语言模型 GLM-4-9B 开始继续预训练,结合无监督语音数据、交错语音-文本数据和有监督语音-文本数据,规模扩展至 1 万亿个 token,在语音语言建模和语音问答两方面均达到最先进性能。随后,我们使用高质量会话语音数据对预训练模型进行微调,使其在会话能力和语音质量上均优于现有基线。开放模型可通过 https://github.com/THUDM/GLM-4-Voice 和 https://huggingface.co/THUDM/glm-4-voice-9b 获取。

英文摘要:

We introduce GLM-4-Voice, an intelligent and human-like end-to-end spoken chatbot. It supports both Chinese and English, engages in real-time voice conversations, and varies vocal nuances such as emotion, intonation, speech rate, and dialect according to user instructions. GLM-4-Voice uses an ultra-low bitrate (175bps), single-codebook speech tokenizer with 12.5Hz frame rate derived from an automatic speech recognition (ASR) model by incorporating a vector-quantized bottleneck into the encoder. To efficiently transfer knowledge from text to speech modalities, we synthesize speech-text interleaved data from existing text pre-training corpora using a text-to-token model. We continue pre-training from the pre-trained text language model GLM-4-9B with a combination of unsupervised speech data, interleaved speech-text data, and supervised speech-text data, scaling up to 1 trillion tokens, achieving state-of-the-art performance in both speech language modeling and spoken question answering. We then fine-tune the pre-trained model with high-quality conversational speech data, achieving superior performance compared to existing baselines in both conversational ability and speech quality. The open models can be accessed through https://github.com/THUDM/GLM-4-Voice and https://huggingface.co/THUDM/glm-4-voice-9b.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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