# Tagged Questions

The tag has no usage guidance.

6answers
1k views

### Are there any mathematical advantages for higher sampling rates?

Given that most people can't hear so many frequencies above 20kHz anyways, I've never understood the exact arguments for using sampling rates above 48kHz. At 48kHz, I understand that it is easier to ...
2answers
708 views

### Why must a sample rate by at least twice a frequency in order to reproduce that frequency accurately?

I read this: To reproduce a given frequency, the sample rate must be at least twice that frequency. Why is this so?
2answers
367 views

### Why does AAC have two Sampling rates?

I am working on a project that reads the meta data of video files with MediaInfo and processes the results. While testing my code with some sample files I noticed that the audio track of a .mkv file ...
1answer
84 views

### how to measure bitrate of video over time

Given an encoded video file with non-constant bitrate, how would one analyze the bitrate over time? So far I found one old program that produces a bitrate plot, but none that can give the raw data of ...
2answers
69 views

### Video from still images - Zooming

I am completing a school project on distributed computing. I have been granted access to a Blue Gene super computer to run an algorithm to create static Mandelbrot set images. I have the algorithm ...
2answers
867 views

### What Happens to Frequencies Above the Nyquist Limit?

If I record a sound at a rate of 8,000 samples per second, I know that the highest frequency that can be reproduced from the sound is 4000Hz. What I want to know is: If the sound contains frequencies ...
2answers
1k views

### how accurate frequency does a PC speaker produce

I was wondering how accurate frequencies do PC speakers produce. I'm talking about the old small things in computer that usually beep. I used the beep linux command to generate some frequencies. But ...
2answers
112 views

### Is there an easy method for detecting or marking the actual sample frequency?

Some time ago, I did a project where the solo guitarist was sitting in a different location. I uploaded rough down mixes to guitarist, who would load the files into his DAW software, record his guitar ...