Playing back an audio file at an arbitrary rate with upsampling and downsampling

1. What is upsampling and downsampling?
2. What is the effect of upsampling and downsampling?
3. What is upsampling and downsampling in signal processing?
4. What is upsampling in audio?

What is upsampling and downsampling?

Downsampling, which is also sometimes called decimation, reduces the sampling rate. Upsampling, or interpolation, increases the sampling rate. Before using these techniques you will need to be aware of the following.

What is the effect of upsampling and downsampling?

Downsampling is the reduction in spatial resolution while keeping the same two-dimensional (2D) representa- tion. It is typically used to reduce the storage and/or transmission requirements of images. Upsampling is the increasing of the spatial resolution while keeping the 2D representation of an image.

What is upsampling and downsampling in signal processing?

¯ downsampling (decimation) – subsampling a discrete signal. ¯ upsampling – introducing zeros between samples to create a longer. signal. ¯ aliasing – when sampling or downsampling, two signals have same. sampled representation but differ between sample locations.

What is upsampling in audio?

Upsampling is the process of inserting zero-valued samples between original samples to increase the sampling rate. (This is sometimes called “zero-stuffing”.) This kind of upsampling adds undesired spectral images to the original signal, which are centered on multiples of the original sampling rate.