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415d8cfa54
@ -91,7 +91,7 @@ private:
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FrequencyField field_frequency {
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{ 0 * 8, 0 * 8 },
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};
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NumberField field_volume{
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NumberField field_volume {
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{ 28 * 8, 0 * 16 },
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2,
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{ 0, 99 },
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@ -67,7 +67,7 @@ void SigGenProcessor::execute(const buffer_c8_t& buffer) {
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// 16 bits LFSR .taps: 16, 15, 13, 4 ;feedback polynomial: x^16 + x^15 + x^13 + x^4 + 1
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// Periode 65535= 2^n-1, quite continuous .
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if (counter == 0) { // we slow down the shift register, because the pseudo random noise clock freq was too high for modulator.
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bit_16 = ((lfsr_16 >> 0) ^ (lfsr_16 >> 1) ^ (lfsr_16 >> 3) ^ (lfsr_16 >> 4) ^ ((lfsr_16 >> 12) & 1) );
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bit_16 = ((lfsr_16 >> 0) ^ (lfsr_16 >> 1) ^ (lfsr_16 >> 3) ^ (lfsr_16 >> 4) ^ ((lfsr_16 >> 12) & 1));
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lfsr_16 = (lfsr_16 >> 1) | (bit_16 << 15);
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sample = (lfsr_16 & 0x00FF); // main pseudo random noise generator.
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}
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