Developing Sigma DSP Cluster

Hi BrettG

d) I need to put audio compressor on all inputs and I saw that the curve has 32 points, but I dont know how to map an HMI user interface

to control all points of this block. My boss suggest me annotate several curves and list them to user choose (its a simple manner but ....)

The compressor table actually has 33 points. The easiest solution is to create some example curves and save the table data as presets. You could also derive the table point calculations for a simple threshold/ratio compressor and include those in your system controller, which would give you greater flexibility.

The SigmaStudio software engineers are currently developing a more traditional compressor interface that has a user interface similar to that of pro audio equipment: threshold, ratio, attack, decay...

Question:

Yes, the table has 33 points, and the sigma software sends 34 ones, I suppose that following rules:

0) xdb = input in db

1) ydb = output in db

2) point (xdb , ydb)

3) transform the point (db) to (v/v) = 10 ^ (point/20) >>>> (x,y)

first point = (x0, y0), where xdb is minor value from graph, ydb the regarded coordinate

second point = first point

remaining points = last point (on right), named by me of (x33, y33)

I've discovered observing the flat position where all sent points has a 1 as value

Well how the blue points moves and how to determine how many gray point can be place beetween them ?

Ratio its a issue ! (I supose)

Viewing the movement, I suppose that the max value of ratio is 14, and the minor 0,0001, and beetween two blue points

all xdb needs to be a multiple of 3 dB (ever)

So, does my approach is correct ?

Regards

Hi BrettG

d) I need to put audio compressor on all inputs and I saw that the curve has 32 points, but I dont know how to map an HMI user interface

to control all points of this block. My boss suggest me annotate several curves and list them to user choose (its a simple manner but ....)

The compressor table actually has 33 points. The easiest solution is to create some example curves and save the table data as presets. You could also derive the table point calculations for a simple threshold/ratio compressor and include those in your system controller, which would give you greater flexibility.

The SigmaStudio software engineers are currently developing a more traditional compressor interface that has a user interface similar to that of pro audio equipment: threshold, ratio, attack, decay...

Question:

Yes, the table has 33 points, and the sigma software sends 34 ones, I suppose that following rules:

0) xdb = input in db

1) ydb = output in db

2) point (xdb , ydb)

3) transform the point (db) to (v/v) = 10 ^ (point/20) >>>> (x,y)

first point = (x0, y0), where xdb is minor value from graph, ydb the regarded coordinate

second point = first point

remaining points = last point (on right), named by me of (x33, y33)

I've discovered observing the flat position where all sent points has a 1 as value

Well how the blue points moves and how to determine how many gray point can be place beetween them ?

Ratio its a issue ! (I supose)

Viewing the movement, I suppose that the max value of ratio is 14, and the minor 0,0001, and beetween two blue points

all xdb needs to be a multiple of 3 dB (ever)

So, does my approach is correct ?

Regards