# Tag Info

Accepted

### Calculation of Reverberation Time (RT60) from the Impulse Response

Encouraged by Hilmar, I've decided to update the answer with all the steps necessary to calculate the Reverberation Time from a scratch. Presumably, it will be useful for others interested in this ...
Accepted

### Why is each window/frame overlapping?

Why is each window/frame overlapping? Windowing is a means to stationarize signals. Inside a small enough window, you can expect that the properties of the signal chunk do not vary too fast. And you ...

### What are i-vectors and x-vectors in the context of Speech Recognition?

The i-vectors and x-vectors share the ability to represent speech utterance in a compact way (as a vector of fixed size, regardless of length of the utterance). The extraction algorithms of i-vectors ...
Accepted

### Signal processing for audio and speech

In line with a previous similar question here are my suggestions: There are so many nice books but I believe you should first have a look at the science of sound from Rossing for getting the most ...

### Confusion Regarding Bi Linear Transform

The bi linear transform is the transform from the Laplace Transform Domain to the Z Transform. The Laplace Transform Domain is a regular plane. This transform transforms vertical lines in the Laplace ...

### Why is each window/frame overlapping?

More overlap means you end up with more windows (of a given length) per second of audio. More windows (of a given length) requires more FFTs which requires more MACs or FLOPs which generally requires ...

### Signal processing for audio and speech

Here is a series of tutorial videos on Speech and Audio Processing by Professor E. Ambikairajah; about 1 hour each. They can serve as a basis to focus on more specific topic. Speech and Audio ...
Accepted

### Logarithmic Spacing

Let's note $x_k$ and $x_{k+1}$ two successive samples. In the usual case of uniform sampling, the spacing between two successive samples is independent of $k$ and is given by $T$, the sampling period. ...

### Parseval's Theorem for discrete series

You are right, but you have mistaken the DTFTs... Considering the Parseval's relation for real discrete-time sequences to be:  \sum_{n} x[n]y[n] = \frac{1}{2\pi} \int_{-\pi}^{\pi} X(e^{j\omega})Y(...
Accepted

### How to edit audios so that they have the same length

ImageMagick is a great tool to edit multiple images in the command line. Thanks to your question, I just discovered SoX, or Sound eXchange: SoX is a cross-platform (Windows, Linux, MacOS X, etc.) ...

### Audio Quality Assessment

Audio quality assessment is one of the most critical pieces of audio coding and enhancing applications. The task requires an accurate and objective (mathematical) modeling of human auditory system ...

### Negative Signal to Noise Ratio

Signal to Noise ratio (SNR) is a ratio of powers and hence it is always greater than or equal to zero, it cannot be negative. On the other hand, very commonly SNR is expressed in decibel (dB) ...