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feat(cli): use pure sine wave for CLI beep (#7444)

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This commit is contained in:
3djc
2026-06-12 12:54:22 +10:00
committed by GitHub
parent 4bfa3d802f
commit d360c32eec
4 changed files with 60 additions and 13 deletions
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radio/src/audio.cpp
+50 -6
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@@ -64,6 +64,43 @@ const int16_t sineValues[] =
15967, 15977, 15985, 15991, 15996, 15999, 16000,
};
#if defined(CLI)
// Distortion-free first-quadrant sine LUT (16000 * sin(i * (PI/2)/256)),
// selected on demand for a clean reference tone (CLI "beep"). The default
// sineValues[] above keeps its historical harmonics, which sound better for
// the vario and general beeps. Only built when the CLI is enabled, so the
// flash-constrained (no-CLI) targets don't pay for a table they never use.
const int16_t pureSineValues[] =
{
0, 98, 196, 295, 393, 491, 589, 687, 785, 883,
981, 1079, 1177, 1275, 1373, 1471, 1568, 1666, 1764, 1861,
1959, 2056, 2153, 2251, 2348, 2445, 2542, 2639, 2735, 2832,
2929, 3025, 3121, 3218, 3314, 3410, 3506, 3601, 3697, 3792,
3888, 3983, 4078, 4173, 4267, 4362, 4456, 4551, 4645, 4738,
4832, 4926, 5019, 5112, 5205, 5298, 5390, 5483, 5575, 5667,
5758, 5850, 5941, 6032, 6123, 6214, 6304, 6394, 6484, 6573,
6663, 6752, 6841, 6930, 7018, 7106, 7194, 7281, 7369, 7456,
7542, 7629, 7715, 7801, 7886, 7972, 8057, 8141, 8226, 8310,
8393, 8477, 8560, 8643, 8725, 8807, 8889, 8971, 9052, 9132,
9213, 9293, 9373, 9452, 9531, 9610, 9688, 9766, 9844, 9921,
9998, 10074, 10150, 10226, 10301, 10376, 10451, 10525, 10599, 10672,
10745, 10817, 10890, 10961, 11033, 11104, 11174, 11244, 11314, 11383,
11452, 11520, 11588, 11655, 11722, 11789, 11855, 11921, 11986, 12051,
12115, 12179, 12243, 12306, 12368, 12430, 12492, 12553, 12614, 12674,
12733, 12793, 12851, 12910, 12967, 13025, 13081, 13138, 13193, 13249,
13304, 13358, 13412, 13465, 13518, 13570, 13622, 13673, 13724, 13774,
13824, 13873, 13921, 13970, 14017, 14064, 14111, 14157, 14202, 14247,
14292, 14335, 14379, 14422, 14464, 14506, 14547, 14587, 14627, 14667,
14706, 14744, 14782, 14819, 14856, 14892, 14928, 14963, 14997, 15031,
15065, 15097, 15130, 15161, 15192, 15223, 15253, 15282, 15311, 15339,
15367, 15394, 15420, 15446, 15472, 15496, 15521, 15544, 15567, 15589,
15611, 15632, 15653, 15673, 15693, 15711, 15730, 15747, 15764, 15781,
15797, 15812, 15827, 15841, 15854, 15867, 15880, 15891, 15903, 15913,
15923, 15932, 15941, 15949, 15957, 15964, 15970, 15976, 15981, 15985,
15989, 15992, 15995, 15997, 15999, 16000, 16000,
};
#endif // CLI
#define SINE_INDEX_Q1 256
#define SINE_INDEX_Q2 512
#define SINE_INDEX_Q3 768
@@ -554,17 +591,23 @@ int ToneContext::mixBuffer(AudioBuffer * buffer, int volume, unsigned int fade)
points = (float(end) - toneIdx) / state.step;
}
#if defined(CLI)
const int16_t * sine = fragment.tone.pure ? pureSineValues : sineValues;
#else
const int16_t * sine = sineValues;
#endif
for (int i=0; i<points; i++) {
int16_t sineIdx = ((int)toneIdx) % MAX_SINE_INDEX;
int16_t sineVal;
if (sineIdx <= SINE_INDEX_Q1)
sineVal = sineValues[sineIdx];
sineVal = sine[sineIdx];
else if (sineIdx <= SINE_INDEX_Q2)
sineVal = sineValues[SINE_INDEX_Q2 - sineIdx];
sineVal = sine[SINE_INDEX_Q2 - sineIdx];
else if (sineIdx <= SINE_INDEX_Q3)
sineVal = -sineValues[sineIdx - SINE_INDEX_Q2];
sineVal = -sine[sineIdx - SINE_INDEX_Q2];
else
sineVal = -sineValues[MAX_SINE_INDEX - sineIdx];
sineVal = -sine[MAX_SINE_INDEX - sineIdx];
int16_t sample = sineVal * state.volume;
mixSample(&buffer->data[i], sample, fade);
toneIdx += state.step;
@@ -714,14 +757,15 @@ void AudioQueue::playTone(uint16_t freq, uint16_t len, uint16_t pause, uint8_t f
freq += g_eeGeneral.speakerPitch * 15;
len = getToneLength(len);
bool pure = flags & PLAY_PURE;
if (flags & PLAY_NOW) {
if (priorityContext.isFree()) {
priorityContext.clear();
priorityContext.setFragment(freq, len, pause, flags & 0x0f, freqIncr, false, fragmentVolume);
priorityContext.setFragment(freq, len, pause, flags & 0x0f, freqIncr, false, fragmentVolume, pure);
}
}
else {
fragmentsFifo.push(AudioFragment(freq, len, pause, flags & 0x0f, freqIncr, false, fragmentVolume));
fragmentsFifo.push(AudioFragment(freq, len, pause, flags & 0x0f, freqIncr, false, fragmentVolume, pure));
}
}