MicroDexed is a compatible 6-operator-FM-synth based on the Teensy(-3.6/-4.x) Microcontroller. https://www.parasitstudio.de
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

43 lines
1.1 KiB

/*
Copyright 2013 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Low frequency oscillator, compatible with DX7
class Lfo {
public:
static void init(FRAC_NUM sample_rate);
void reset(const uint8_t params[6]);
// result is 0..1 in Q24
int32_t getsample();
// result is 0..1 in Q24
int32_t getdelay();
void keydown();
private:
static uint32_t unit_;
uint32_t phase_; // Q32
uint32_t delta_;
uint8_t waveform_;
uint8_t randstate_;
bool sync_;
uint32_t delaystate_;
uint32_t delayinc_;
uint32_t delayinc2_;
};