There are three likely explanations for including "dft" in the filename:
This file is frequently used in MathWorks tutorials because it is a "representative" signal. Here are the primary use cases: A. Short-Time Fourier Transform (STFT) speechdft-16-8-mono-5secs.wav
Simulating how a microphone array picks up a specific voice source. Phase-Locking: There are three likely explanations for including "dft"
The prefix speechdft likely refers to the specific algorithm, dataset, or test suite that generated this file. In the context of audio testing, "DFT" usually stands for , a fundamental mathematical operation in signal processing. Phase-Locking: The prefix speechdft likely refers to the
: This generally refers to a sample rate of 16 kHz or 8 kHz, which are standard, lower-bandwidth rates often used in telephony and speech recognition applications.
SpeechDFT-16-8-mono-5secs.wav is a standard sample audio file provided by within the MATLAB Audio Toolbox