arXiv:2412.03980eess.AS2024-12

整合多个专家模型,让语音聊天机器人更懂音频问题。

Comprehensive Audio Query Handling System with Integrated Expert Models and Contextual Understanding

  • 用意图分类器精准分流语音查询至ASR、说话人分离等专家模型。
  • 在自建数据集和MMAU基准上,准确率显著优于7B参数模型。
  • 适合需要本地部署的智能语音助手开发人员使用。

本文提出一个综合语音问答系统,通过集成多个专用音频处理模型来应对多样化的音频查询。系统采用基于BERT的意图分类器(在多样化音频查询数据集上训练),将涉及音频内容的问题路由至自动语音识别(ASR)、说话人分离、音乐识别及文本转音频生成等专家模型。随后,一个38亿参数的大语言模型接收来自音频事件检测(ACD)模块提取的音频事件信息,并对专家模型输出的文本进行后处理,生成最终回答。我们在自建音频任务数据集与MMAU声音集基准上进行了评估。自建数据集涵盖ACD-时间戳问答(QA)和ACD-时序问答数据集,用于评测时间戳与时序推理能力。实验表明,BERT基意图分类器在查询分流中优于大语言模型少样本分类;在部分自建任务上,本方法显著提升准确率,且在MMAU基准的声音测试集上超越7B参数量级模型,具备良好的端侧部署潜力。

原文摘要 · Abstract (English)

This paper presents a comprehensive chatbot system designed to handle a wide range of audio-related queries by integrating multiple specialized audio processing models. The proposed system uses an intent classifier, trained on a diverse audio query dataset, to route queries about audio content to expert models such as Automatic Speech Recognition (ASR), Speaker Diarization, Music Identification, and Text-to-Audio generation. A 3.8 B LLM model then takes inputs from an Audio Context Detection (ACD) module extracting audio event information from the audio and post processes text domain outputs from the expert models to compute the final response to the user. We evaluated the system on custom audio tasks and MMAU sound set benchmarks. The custom datasets were motivated by target use cases not covered in industry benchmarks and included ACD-timestamp-QA (Question Answering) as well as ACD-temporal-QA datasets to evaluate timestamp and temporal reasoning questions, respectively. First we determined that a BERT based Intent Classifier outperforms LLM-fewshot intent classifier in routing queries. Experiments further show that our approach significantly improves accuracy on some custom tasks compared to state-of-the-art Large Audio Language Models and outperforms models in the 7B parameter size range on the sound testset of the MMAU benchmark, thereby offering an attractive option for on device deployment.

语音问答多模态端侧部署专家模型

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