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Formula to calculate the rate for a compression algorithm

Started by A.E lover April 18, 2007
Hi all,

In the case I don't know the sampling frequency. Specifically, I only
given a discrete function:

f[n]= blah blah..... with length N.

I use wavelet based compression method:

Decompose the signal into N wavelet coefficients, quantize and then
encode these coefficients with M bits for each coefficient.

Now to report the algorithm, I need to submit it's RATE.  In the case,
what formula is for RATE calculation?

I guess it will be Size of compressed data /  size of original data

I  know the size of my compressed data: it is the number of bits *
number of coefficients= M*N  bits

But what is the size of my original data :(f(n))??

Thanks

On Apr 18, 11:23 am, "A.E lover" <aelove...@gmail.com> wrote:
> Hi all, > > In the case I don't know the sampling frequency. Specifically, I only > given a discrete function: > > f[n]= blah blah..... with length N. > > I use wavelet based compression method: > > Decompose the signal into N wavelet coefficients, quantize and then > encode these coefficients with M bits for each coefficient. > > Now to report the algorithm, I need to submit it's RATE. In the case, > what formula is for RATE calculation? > > I guess it will be Size of compressed data / size of original data > > I know the size of my compressed data: it is the number of bits * > number of coefficients= M*N bits > > But what is the size of my original data :(f(n))?? > > Thanks
Assuming all 'blah' have same number of bits, would that not be: (number of bits per 'blah')*N ? Dirk