How to reconstruct an phase information from the magnitude spectrogram

1. Can you convert spectrogram to audio?
2. What is the magnitude of STFT?
3. What is Griffin Lim algorithm?
4. How is frequency shown on a spectrogram?

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.

How is frequency shown on a spectrogram?

The vertical axis represents frequency, which can also be thought of as pitch or tone, with the lowest frequencies at the bottom and the highest frequencies at the top.