MODALITY corpus - SPEAKER 23 - COMMANDS C1

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 23: sex: man native speaker: yes age: 29 The test material: COMMANDS C1 All recordings for all speakers are available at http://www.modality-corpus.org/ Sample still from the corpus(SPEAKER 23) 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.264 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（MODALITY corpus）是英语语音录制的多模态数据库之一。它包含超过30小时的多模态录制内容。该数据库包含高分辨率、高帧率的立体视频流，以及由麦克风阵列和笔记本电脑麦克风采集的音频信号。

该语料库可用于开发音频-视觉语音识别（Audio-Visual Speech Recognition, AVSR）系统，因为每一段语音都带有标注。带噪声环境下的录制内容可用于测试语音识别系统的鲁棒性。

本语料库的语言材料基于遥控器控制场景，涵盖231个词汇——包括数字、月份与星期名称，以及一组与计算机设备控制相关的动词和名词。录制时，说话者会单独朗读单词或按序列朗读，每位说话者需完成12次录制会话。其中一半会话在安静环境下录制，另一半则包含三种干扰信号（交通噪声、人声嘈杂声与工厂噪声）。

该语料库包含42位说话者的录制内容（33位男性，9位女性）。参与者包括格但斯克理工大学多媒体系统系的20名学生与教职员工、格但斯克大学英美研究学院的5名学生，以及17名以英语为母语的说话者。

本数据集包含说话者23的录制内容与视觉特征：
- 性别：男性
- 母语使用者：是
- 年龄：29岁

测试材料：命令指令C1

所有说话者的录制内容均可在http://www.modality-corpus.org/ 获取。

附语料库样本帧（说话者23）

由于该语料库体量庞大（约2.5 TB），每位说话者的录制内容均被打包为独立的ZIP压缩文件，单文件大小约为4-7 GB。录制内容按照说话者的语言能力进行分组：A组（17位说话者）为母语使用者；非母语使用者（波兰籍）的录制内容归入B组（25位说话者）。

音频文件采用波形音频文件格式（Waveform Audio File Format, .wav），包含单通道PCM音频流，采样率为44.1 kSa/s，位深度为16比特。视频文件采用Matroska多媒体容器格式（.mkv），其中封装了经h.264编解码器（使用High 4:4:4配置文件）压缩的1080p分辨率视频流，帧率为100 fps。

".lab"文件为文本文件，记录了音频文件中单词的位置信息，遵循HTK标注格式。每个".lab"文件的行格式为：起始时间、结束时间（单位为100纳秒）以及实际标注词，例如：1239620000 1244790000 FIVE，表示单词"five"出现在音频的123.962秒至124.479秒区间内。每个录制内容的逐词信噪比（Signal-to-Noise Ratio, SNR）计算值也包含在ZIP压缩文件中。