galearn/tools, branch master Gate Array Learn pdm: Support first-order sigma delta generation also 2025-08-08T22:09:35+00:00 Jon Nordby jononor@gmail.com 2025-08-08T22:09:35+00:00 582f88cbf6631c5e93d8cc010a8fa69b174afd62 






pdm: Support optional markers in plot
2025-08-08T20:22:47+00:00

Jon Nordby
jononor@gmail.com

2025-08-08T20:22:47+00:00

549688cc3b1175538788361e379719dbd18306cd












pdm2pcm: Default to 4 stages
2025-04-26T19:33:29+00:00

Jon Nordby
jononor@gmail.com

2025-04-25T23:18:30+00:00

1c8497fa17f4c11e997641030d2e9c0f12e1b0bb












pdm2pcm: CIC filter that works
2025-04-26T19:33:29+00:00

Jon Nordby
jononor@gmail.com

2025-04-25T23:14:11+00:00

c6596c7463fde97728764318e12b79da98b16b6f












pdm2pcm: Try add support for CIC
2025-04-26T19:33:29+00:00

Jon Nordby
jononor@gmail.com

2025-04-25T22:39:26+00:00

78718bfd92f11bad67d3e606238205d49bb89f30

Currently not really working
FIR with 501 taps is considerably better than 101 though





Currently not really working
FIR with 501 taps is considerably better than 101 though







tools: Unhardcode parameters
2025-04-18T14:12:03+00:00

Jon Nordby
jononor@gmail.com

2025-04-18T00:24:47+00:00

01285386c9e5f7524169b4550ad2fa8c78936128












tools: Fixup PDM reference conversion
2025-04-18T14:12:03+00:00

Jon Nordby
jononor@gmail.com

2025-04-17T23:58:15+00:00

df870d193c3ca6552ae85307abbb9f998228a776

Seems to agree pretty well with itself now
PDM bitstream also looks plausible for a sinewave





Seems to agree pretty well with itself now
PDM bitstream also looks plausible for a sinewave







tools: Simplify test signal to 1 khz sine
2025-04-18T14:12:03+00:00

Jon Nordby
jononor@gmail.com

2025-04-17T22:17:33+00:00

61d9a812d1ab7c62b0e76903fb55a8c4d180298b

Comes out as a 1khz square wave...
Not quite right





Comes out as a 1khz square wave...
Not quite right







tools: WIP on PDM<->PCM conversion in Python
2025-04-18T14:12:03+00:00

Jon Nordby
jononor@gmail.com

2025-04-17T22:04:20+00:00

d26152cb2fdaf1381dc43eb69a3f299911b68d50

First test signal does not seem correct...





First test signal does not seem correct...