[SAMPLE] Nexdata | Multilingual Speech Synthesis Data | 400 Hours | TTS Data | Audio Data | AI ...

1. Specifications
Format : 44.1 kHz/48 kHz, 16bit/24bit, uncompressed wav, mono channel.

Recording environment : professional recording studio.

Recording content : general narrative sentences, interrogative sentences, etc.

Speaker : native speaker

Annotation Feature : word transcription, part-of-speech, phoneme boundary, four-level accents, four-level prosodic boundary.

Device : Microphone

Language : American English, British English, Japanese, French, Dutch,Mandarin Chinese, Catonese, Canadian French,Australian English, Italian, New Zealand English, Spanish, Mexican Spanish

Application scenarios : speech synthesis

Accuracy rate: Word transcription: the sentences accuracy rate is not less than 99%.
Part-of-speech annotation: the sentences accuracy rate is not less than 98%.
Phoneme annotation: the sentences accuracy rate is not less than 98% (the error rate of voiced and swallowed phonemes is not included, because the labelling is more subjective).
Accent annotation: the word accuracy rate is not less than 95%.
Prosodic boundary annotation: the sentences accuracy rate is not less than 97%
Phoneme boundary annotation: the phoneme accuracy rate is not less than 95% (the error range of boundary is within 5%)

2. About Nexdata
Nexdata owns off-the-shelf 200,000 hours of speech recognition data, 800TB of image/video data, about 2 billion pieces of NLP data. These ready-to-go AI & ML Training Data support instant delivery, quickly improve the accuracy of AI models. For more details, please visit us at https://www.nexdata.ai/datasets/tts?source=Datarade

1. 规格说明
格式：44.1 kHz/48 kHz采样率，16bit/24bit量化位深，非压缩WAV格式，单声道。
录制环境：专业录音棚。
录制内容：通用叙述句、疑问句等各类语句。
发音人：母语使用者。
标注特征：词转录、词性标注、音素边界、四级重音、四级韵律边界。
采集设备：麦克风。
覆盖语言：美式英语、英式英语、日语、法语、荷兰语、普通话、粤语、加拿大法语、澳大利亚英语、意大利语、新西兰英语、西班牙语、墨西哥西班牙语。
应用场景：语音合成。
准确率要求：词转录语句准确率不低于99%；词性标注语句准确率不低于98%；音素标注语句准确率不低于98%（不包含浊音与吞音标注误差，因该类标注主观性较强）；重音标注词语准确率不低于95%；韵律边界标注语句准确率不低于97%；音素边界标注音素准确率不低于95%（边界误差范围≤5%）。

2. 关于Nexdata
Nexdata 拥有现成可用的20万小时语音识别数据、800TB图像/视频数据以及约20亿条自然语言处理（NLP）数据。此类就绪型人工智能与机器学习训练数据支持即时交付，可快速提升AI模型的准确率。如需了解更多详情，请访问：https://www.nexdata.ai/datasets/tts?source=Datarade

搜集汇总

背景与挑战

背景概述

该数据集是Nexdata提供的400小时多语言语音合成数据，包含专业录音室录制的母语音频，格式为44.1 kHz/48 kHz的未压缩WAV文件。数据标注了单词转录、词性、音素边界、重音和韵律边界等信息，支持英语、日语、中文等多种语言，适用于语音合成应用。