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Lingua Libre, a Wikimedia tool and project of language documentation, using VAD to allow recording many pronunciations in a short amount of time. The VAD Android library [10] utilizes a combination of GMM and DNN models, such as WebRTC GMM, Silero DNN, and Yamnet DNN. The library surpasses many production-grade models in both quality and ...
Speech Transmission Index (STI) is a measure of speech transmission quality. The absolute measurement of speech intelligibility is a complex science. The STI measures some physical characteristics of a transmission channel (a room, electro-acoustic equipment, telephone line, etc.), and expresses the ability of the channel to carry across the characteristics of a speech signal.
Transcriber is an open-source software tool for the transcription and annotation of speech signals for linguistic research. It supports multiple hierarchical layers of segmentation , named entity annotation, speaker lists, topic lists, and overlapping speakers.
The electric field strength at a specific point can be determined from the power delivered to the transmitting antenna, its geometry and radiation resistance. Consider the case of a center-fed half-wave dipole antenna in free space, where the total length L is equal to one half wavelength (λ/2).
In speech communication, intelligibility is a measure of how comprehensible speech is in given conditions. Intelligibility is affected by the level (loud but not too loud) and quality of the speech signal, the type and level of background noise, reverberation (some reflections but not too many), and, for speech over communication devices, the properties of the communication system.
In the 1990s, improvements in voice recognition technology began to allow computers to transcribe recorded audio dictation into text form, a task that previously required human secretaries or transcribers. The files generated with digital recorders vary in size, depending on the manufacturer and the format the user chooses.
For general transcription, media files can be played back on a computer (or other device capable of playback) and paused for transcription in a text editor. Other (cross-platform) tools to assist this process include Audacity and Transcriber, while a program like ELAN (described further below) can also perform this function.
An optical communication system is any form of communications system that uses light as the transmission medium. Equipment consists of a transmitter, which encodes a message into an optical signal, a communication channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal.