MODALITY corpus - SPEAKER 10 - COMMANDS C5

The MODALITY corpus is one of the multimodal database of word recordings in English. It consists of over 30 hours of multimodal recordings. The database contains high-resolution, high-framerate stereoscopic video streams and audio signals obtained from a microphone array and a laptop microphone. The corpus can be employed to develop an AVSR system, as every utterance was labelled. Recordings in noisy conditions can be used to test the robustness of speech recognition systems. The language material was based on a remote control scenario and it includes 231 words -numbers, names of months and days, a set of verbs and nouns related to a computer device control. They were read by speakers as separated words and sequences resulting in a set of 12 recording sessions per speaker. Half of the sessions were recorded in quiet conditions, the other half contained three kinds of intrusive signals (traffic, babble and factory noise). The corpus includes recordings of 42 speakers (33 male, 9 female). The participants include 20 students and staff of Multimedia Systems Department of the Gdańsk University of Technology, 5 students of the Institute of English and American Studies of the University of Gdańsk, and 17 native English speakers. The dataset consist of recordings and visual features for SPEAKER 10: sex: man native speaker: no age: 26 The test material: COMMANDS C5 All recordings for all speakers are available at http://www.modality-corpus.org/ Sample still from the corpus(SPEAKER 10) Due to the size of the corpus (approx. 2.5 TB of data), every speaker’s recording was placed in a separate zip file of the size approx. 4-7 GB each. The recordings were organized according to the speakers’ language skills. The group A (17 speakers) consists of native-speakers. Non-native speakers recordings (Polish nationals) were placed in the Group B (25 speakers). The audio files use the Waveform Audio File Format (.wav), and contain a single PCM audio stream sampled at 44.1 kSa/s with 16-bit depth. The video files utilize the Matroska Multimedia Container Format (.mkv) in which a video stream in 1080p resolution, captured at 100 fps was placed after being compressed with h.265 codec (using High 4:4:4 profile). The ‘.lab’ files are text files containing the information on word positions in audio files, and follow the HTK label format. Each line of a ‘.lab’ file contains the actual label preceded by start and end times (in 100 ns units) e.g. : 1239620000 1244790000 FIVE which denotes the word “five”, occurring between the 123.962 s and 124.479 s of audio.Word-accurate SNR values calculated for every recording are also included in the ZIP file.

MODALITY语料库是一款英语单词录制类多模态数据库，总计包含超过30小时的多模态录制数据。该数据库收录高分辨率、高帧率的立体视频流，以及由麦克风阵列与笔记本电脑麦克风采集得到的音频信号。由于每一条语音片段均已完成标注，该语料库可用于开发视听语音识别（Audio-Visual Speech Recognition, AVSR）系统；带噪录制数据则可用于测试语音识别系统的鲁棒性。
该语料库的语言素材基于遥控场景，涵盖231个单词，包括数字、月份与日期名称，以及一组与计算机设备控制相关的动词与名词。录制时由发音人以独立单词或单词序列的形式朗读，每位发音人共完成12组录制会话，其中一半会话在安静环境下录制，另一半则包含三类干扰信号：交通声、人声嘈杂声与工厂噪声。
本语料库共收录42位发音人的录制数据，其中男性33位，女性9位。参与录制的发音人包括：格但斯克工业大学多媒体系统系的20名学生与教职工、格但斯克大学英美研究学院的5名学生，以及17名以英语为母语的发音人。
本次公开的数据集包含编号为SPEAKER 10的发音人的录制数据与视觉特征：性别为男性，非母语发音人，年龄26岁，测试素材为COMMANDS C5。所有发音人的全部录制数据均可通过http://www.modality-corpus.org/获取，本语料库（SPEAKER 10）附带示例静帧画面。
由于该语料库总数据量约为2.5 TB，每位发音人的录制数据均被打包为单个独立的ZIP压缩包，单包大小约为4至7 GB。录制数据按照发音人的语言能力分为两组：A组（17位发音人）为以英语为母语的发音人；非母语发音人（波兰籍）的录制数据归入B组（25位发音人）。
音频文件采用波形音频文件格式（.wav），包含单路PCM音频流，采样率为44.1 kSa/s，位深为16比特。视频文件采用Matroska多媒体容器格式（.mkv），其中的视频流分辨率为1080p，帧率为100 fps，经h.265编码器（采用High 4:4:4 profile）压缩后存储。
.lab文件为文本文件，包含音频文件中单词的位置信息，遵循HTK标注格式。该文件的每一行均包含实际标注内容，标注前带有起始与结束时间（单位为100纳秒），例如：1239620000 1244790000 FIVE，该示例表示单词“five”出现在音频的123.962秒至124.479秒区间内。此外，每个录制数据的逐词信噪比（Signal-to-Noise Ratio, SNR）计算值也包含在ZIP压缩包中。