| commit | caaa4aef432470882b7a480d3d347777c19779b1 | [log] [tgz] |
|---|---|---|
| author | Jeff DiCorpo <jeffdi@efabless.com> | Mon Jan 10 08:31:35 2022 -0800 |
| committer | Jeff DiCorpo <jeffdi@efabless.com> | Mon Jan 10 08:31:35 2022 -0800 |
| tree | e4bffad73c07f60595dfd01f38c676299ad9ac7d | |
| parent | ca4e047e2c9f1967b07ed3017f87ffedcec6875b [diff] |
final gds oasis
Physically modeled guitar strings using the Karplus-Strong algorithm with some extensions by Jaffe & Smith.
The string model is built from primitive digital filters like white noise, delay, fader, lowpass & allpass connected by patch cables that form a feedback loop. The patch configuration is described in ks_string.v. Individual filters are implemented in ks_noise.v, ks_delay_*.v, ks_fader.v, ks_feedback.v, ks_tuning.v and ks_dynamics.v. You may wish to follow the original articles for more details:
Strings can be set up, tuned, plucked or muted via the wishbone bus. The default build contains a single string, but it can be reconfigured for multiple strings with sympathetic resonsances by editing defines.v.
Being a fully digital design audio is output via the I2S protocol, so you'll need a DAC chip (“soundcard”) such as CS4344, UDA1334A or MAX98357A to get analog output.
