Top "Sampling" questions

Stratified random sampling from data frame

I have a data frame in the format: head(subset) # ants 0 1 1 0 1 # age 1 2 2 1 3 # lc 1 1 0 1 0 I need to create new data frame …

r random sampling

Take n random elements from a List<E>?

How can I take n random elements from an ArrayList<E>? Ideally, I'd like to be able to …

java algorithm random sampling

Taking a disproportionate sample from a dataset in R

If I have a large dataset in R, how can I take random sample of the data taking into consideration …

r random sampling

How to draw waveform of Android's music player?

one of the default live wallpapers that came with my phone was a wallpaper that displayed the wave form of …

android audio waveform sampling

What are chunks, samples and frames when using pyaudio

After going through the documentation of pyaudio and reading some other articles on the web, I am confused if my …

python python-2.7 audio sampling pyaudio

Android accelerometer: Sampling Rate?

I want to [1] Increase Sampling Rate of my phone's accelerometer. (SENSOR_DELAY_FASTEST gives max. about 100Hz on Xperia/ 180Hz …

android accelerometer android-sensors sampling rate

Audio samples per second?

I am wondering on the relationship between a block of samples and its time equivalent. Given my rough idea so …

audio sampling

Latin hypercube sampling with python

I would like to sample a distribution defined by a function in multiple dimensions (2,3,4): f(x, y, ...) = ... The distributions might …

python random sampling

What is the difference between Linear Quantization and Non-linear Quantization?

What is the difference between Linear Quantization and Non-linear Quantization ? I'm talking with regard to PCM samples. http://www.blurtit.…

signal-processing pcm sampling quantization

Algorithms for determining the key of an audio sample

I am interested in determining the musical key of an audio sample. How would (or could) an algorithm go about …

algorithm audio analysis sampling audio-processing