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Set default mic gain to 2.0 and remove loopback monitor gain

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Kai
2026-02-13 16:20:44 +01:00
parent bd3b73e387
commit 2ce87e8cce
2 changed files with 3 additions and 9 deletions
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6
include/secrets.example.h
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@@ -27,9 +27,7 @@ static constexpr bool EVS_SERIAL_COMMAND_ECHO = true;
static constexpr bool EVS_MIC_USE_RIGHT_CHANNEL = false; static constexpr bool EVS_MIC_USE_RIGHT_CHANNEL = false;
// 24-bit sample to 16-bit conversion shift. Start with 8. // 24-bit sample to 16-bit conversion shift. Start with 8.
static constexpr int EVS_MIC_S24_TO_S16_SHIFT = 8; static constexpr int EVS_MIC_S24_TO_S16_SHIFT = 8;
// Digital mic gain (avoid clipping). Typical 0.2 .. 0.8. // Digital mic gain (project default).
static constexpr float EVS_MIC_GAIN = 0.35f; static constexpr float EVS_MIC_GAIN = 2.0f;
// Extra gain only for local loopback monitor path.
static constexpr float EVS_LOOPBACK_MONITOR_GAIN = 0.35f;
#endif // EVS_SECRETS_H #endif // EVS_SECRETS_H

6
src/main.cpp
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@@ -11,7 +11,6 @@ static constexpr bool kSerialCommandEcho = EVS_SERIAL_COMMAND_ECHO;
static constexpr bool kMicUseRightChannel = EVS_MIC_USE_RIGHT_CHANNEL; static constexpr bool kMicUseRightChannel = EVS_MIC_USE_RIGHT_CHANNEL;
static constexpr int kMicS24ToS16Shift = EVS_MIC_S24_TO_S16_SHIFT; static constexpr int kMicS24ToS16Shift = EVS_MIC_S24_TO_S16_SHIFT;
static constexpr float kMicGain = EVS_MIC_GAIN; static constexpr float kMicGain = EVS_MIC_GAIN;
static constexpr float kLoopbackMonitorGain = EVS_LOOPBACK_MONITOR_GAIN;
// --------------------------- // ---------------------------
// Project config // Project config
@@ -447,10 +446,7 @@ void loop() {
publishMicTelemetryIfDue(pcm16, sampleCount); publishMicTelemetryIfDue(pcm16, sampleCount);
} else if (g_mode == DeviceMode::LocalLoopback) { } else if (g_mode == DeviceMode::LocalLoopback) {
for (size_t i = 0; i < sampleCount; ++i) { for (size_t i = 0; i < sampleCount; ++i) {
float v = (float)pcm16[i] * kLoopbackMonitorGain; enqueuePcmSample(pcm16[i]);
if (v > 32767.0f) v = 32767.0f;
if (v < -32768.0f) v = -32768.0f;
enqueuePcmSample((int16_t)v);
} }
} else { } else {
// idle // idle