Please consider registering

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —

— Match —

— Forum Options —

Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed sp_TopicIcon
PolyBlep Question
No permission to create posts
February 5, 2015
11:53 pm
Forum Posts: 41
Member Since:
September 12, 2013
sp_UserOfflineSmall Offline

Hi Will,

congratulations, the 6.5 Version is published! Great !!

I have a question regarding the use of PolyBlep. This works very well, if I have a signal with sharp edges like classical sawtooth. But if I broaden the edge of the swtooth lets say from 1 sample to 20-40 samples (within the "edge" the signal value goes from +1.0 to -1.0 ), I do not find a setting wich is satisfying. There is a minimum of aliasing if I adjust dHeight downwards, but still the aliasing is to high.

Is there a mathematical reason for this, or do I something wrong?



February 6, 2015
2:50 am
W Pirkle
Forum Posts: 187
Member Since:
January 29, 2017
sp_UserOfflineSmall Offline

Hi Peter

BLEP (and PolyBLEP) are designed to adjust a single-sample discontinuity, not multiple-sample discontinuities so that is the root problem.

- Will

Forum Timezone: America/New_York

Most Users Ever Online: 36

Currently Online:
3 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Skyler: 48

Derek: 41

Peter: 41

Frodson: 40

clau_ste: 39

Gwen: 32

EZB: 24

lppier: 23

Msaldaña: 18

JimmyM: 17

Member Stats:

Guest Posters: 1

Members: 495

Moderators: 1

Admins: 4

Forum Stats:

Groups: 11

Forums: 31

Topics: 511

Posts: 1966

Newest Members:

CoraDias, Edoardo, knooierd, daniel, Merril Bradshaw, BillPlunkett, Pajczur, michaelwayneharwood, RickM, rainbow wind

Moderators: W Pirkle: 187

Administrators: Tom: 66, JD Young: 80, Will Pirkle: 0, W Pirkle: 187