How to reconstruct a sound from magnitude spectrogram?

1. Can you convert spectrogram to audio?
2. What is the magnitude of STFT?
3. What is Griffin Lim algorithm?
4. What is N_fft in Librosa?

Can you convert spectrogram to audio?

You can make a sound image that is viewable on a spectrogram. With this app you can convert your images to audio and secretly send them to others. In order to convert an image, you just need to select an image from your computer, Google Drive, Webcam, and Clipboard.

What is the magnitude of STFT?

STFT magnitude, specified as a matrix. s must correspond to a single-channel, real-valued signal. Example: abs ( stft ( sin (pi/2*(0:255)),'FFTLength',128)) specifies the STFT magnitude of a sinusoid. Example: abs ( stft ( chirp (0:1/1e3:1,25,1,50))) specifies the STFT magnitude of a chirp sampled at 1 kHz.

What is Griffin Lim algorithm?

The Griffin-Lim Algorithm (GLA) is a phase reconstruction method based on the redundancy of the short-time Fourier transform. It promotes the consistency of a spectrogram by iterating two projections, where a spectrogram is said to be consistent when its inter-bin dependency owing to the redundancy of STFT is retained.

What is N_fft in Librosa?

The default value, n_fft=2048 samples, corresponds to a physical duration of 93 milliseconds at a sample rate of 22050 Hz, i.e. the default sample rate in librosa. This value is well adapted for music signals.