我们提出了Maestro,这是一种自制的培训方法,可以统一从语音和文本方式中学到的表示形式。从语音信号中进行的自我监督学习旨在学习信号中固有的潜在结构,而从文本尝试捕获词汇信息的文本尝试中学习。从不配对的语音和文本序列中学习对齐表示是一项具有挑战性的任务。先前的工作要么隐含地强制执行从这两种方式中学到的表示形式,要通过多任务和参数共享在潜在空间中对齐,或通过语音综合通过模态转换而明确地进行。前者受到两种方式之间的干扰,而后者则引入了额外的复杂性。在本文中,我们提出了一种新颖的算法Maestro,旨在同时从这两种方式中学习统一的表示,可以转移到各种下游任务,例如自动语音识别(ASR)和语音翻译(ST)。 Maestro通过序列比对,持续时间预测和匹配的嵌入在学习空间中通过对齐的蒙版模型损失来学习统一的表示形式。我们在Voxpopuli多语言ASR上建立了一个新的最先进(SOTA),单词错误率相对相对降低8%(WER),多域Speetstew ASR(相对3.7%)和21种英语多语言ST在Covost 2上2.8 BLEU的改善平均21种语言。
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使用Denoisis扩散概率模型(DDPM)的神经声码器已通过适应给定的声学特征的扩散噪声分布来改善。在这项研究中,我们提出了适应扩散噪声的素描,以使其随时间变化的光谱包络变得接近条件对数 - 摩尔光谱图。随着时变的过滤这种适应可改善声音质量,尤其是在高频带中。它是在时频域中处理的,以使计算成本几乎与常规DDPM基于DDPM的神经声码器相同。实验结果表明,在分析合成和语音增强方案中,Specgrad比常规DDPM的神经声码器产生比常规DDPM的更高的语音波形。音频演示可在wavegrad.github.io/specgrad/上获得。
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我们介绍了CVSS,这是一种大规模的多语言对语音转换(S2ST)语料库,从21种语言覆盖了21种语言的句子级并行S2ST对。通过将Covost 2从Covost 2的翻译文本综合将翻译文本与最先进的TTS系统合成语音,源自公共语音语音语料库和COVOST 2语音到文本转换(ST)语料库。提供了两个版本的翻译演讲:1)CVSS-C:所有翻译演讲都是一种高质量的规范声音; 2)CVSS-T:翻译语音从相应的源语音传输。此外,CVSS提供标准化的翻译文本,它与翻译语音中的发音匹配。在每个版本的CVSS上,我们建立了基线多语言直接S2ST模型和Cascade S2ST模型,验证了语料库的有效性。为了构建强大的Cascade S2ST基准,我们在Covost 2上培训了St模型,这优于前一种最先进的培训,而无需额外的数据。尽管如此,直接S2ST模型的性能在从头开始训练时接近强级联基线,并且在匹配ST模型中初始化时,仅在ASR转换转换时的0.1或0.7bleu差异。
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This paper introduces WaveNet, a deep neural network for generating raw audio waveforms. The model is fully probabilistic and autoregressive, with the predictive distribution for each audio sample conditioned on all previous ones; nonetheless we show that it can be efficiently trained on data with tens of thousands of samples per second of audio. When applied to text-to-speech, it yields state-ofthe-art performance, with human listeners rating it as significantly more natural sounding than the best parametric and concatenative systems for both English and Mandarin. A single WaveNet can capture the characteristics of many different speakers with equal fidelity, and can switch between them by conditioning on the speaker identity. When trained to model music, we find that it generates novel and often highly realistic musical fragments. We also show that it can be employed as a discriminative model, returning promising results for phoneme recognition.
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Research has shown that climate change creates warmer temperatures and drier conditions, leading to longer wildfire seasons and increased wildfire risks in the United States. These factors have in turn led to increases in the frequency, extent, and severity of wildfires in recent years. Given the danger posed by wildland fires to people, property, wildlife, and the environment, there is an urgency to provide tools for effective wildfire management. Early detection of wildfires is essential to minimizing potentially catastrophic destruction. In this paper, we present our work on integrating multiple data sources in SmokeyNet, a deep learning model using spatio-temporal information to detect smoke from wildland fires. Camera image data is integrated with weather sensor measurements and processed by SmokeyNet to create a multimodal wildland fire smoke detection system. We present our results comparing performance in terms of both accuracy and time-to-detection for multimodal data vs. a single data source. With a time-to-detection of only a few minutes, SmokeyNet can serve as an automated early notification system, providing a useful tool in the fight against destructive wildfires.
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面部反欺骗(FAS)在防止演示攻击中的人脸识别系统中起着至关重要的作用。由于身份和微不足道的方差不足,现有面部反欺骗数据集缺乏多样性,这限制了FAS模型的泛化能力。在本文中,我们提出了双重欺骗解散生成(DSDG)框架,通过“通过生成反欺骗”来解决这一挑战。根据变形AutiaceDer(VAE)中的可解释分解潜在解剖学,DSDG学习身份表示的联合分布和潜在空间中的欺骗模式表示。然后,可以从随机噪声生成大规模成对的实时和欺骗图像,以提高训练集的分集。然而,由于VAE的固有缺陷,一些产生的面部图像被部分地扭曲。这种嘈杂的样本很难预测精确的深度值,因此可能阻碍广泛使用的深度监督优化。为了解决这个问题,我们进一步引入了轻量级深度不确定性模块(DUM),减轻了噪声样本对深度不确定性学习的不利影响。 DUM在没有依赖性的情况下开发,因此可以灵活地集成与任何深度监督网络进行面部反欺骗。我们评估了提出的方法在五个流行基准上的有效性,并在测试中实现了最先进的结果。该代码可在https://github.com/jdai-cv/facex-zoo/tree/main/addition_module/dsdg中获得。
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