Glossary Library

Technical GlossarySpeech, Voice and Audio AI

Short-Time Fourier Transform

A core transform that enables windowed analysis of audio frequency content over time.

The Short-Time Fourier Transform is one of the most fundamental mathematical tools in modern audio processing. A raw waveform is analyzed in the frequency domain through small time windows, producing spectrogram-like representations. This makes it indispensable for understanding audio jointly in time and frequency. It is a shared foundation across speech, music, and general audio analytics systems.

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Explore these concepts to continue your artificial intelligence journey.

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Automatic Speech Recognition

The core speech-to-text task aimed at converting human speech into text.

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End-to-End ASR

An approach that performs speech-to-text conversion with a single unified network instead of separate acoustic and language models.

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CTC Decoding

A core learning and decoding approach that helps recover text from speech sequences with unknown alignments.