From 68b973aa9f64ad03210e5fb669f997a12965525f Mon Sep 17 00:00:00 2001 From: HiFiPhile Date: Fri, 5 Apr 2024 15:20:13 +0200 Subject: Reduce uac2_headset max sample rate for better compatibility. --- examples/device/uac2_headset/src/main.c | 6 +----- examples/device/uac2_headset/src/tusb_config.h | 8 +++----- 2 files changed, 4 insertions(+), 10 deletions(-) (limited to 'examples') diff --git a/examples/device/uac2_headset/src/main.c b/examples/device/uac2_headset/src/main.c index 35b7ac94b..fbd7ffe22 100644 --- a/examples/device/uac2_headset/src/main.c +++ b/examples/device/uac2_headset/src/main.c @@ -35,11 +35,7 @@ //--------------------------------------------------------------------+ // List of supported sample rates -#if defined(__RX__) - const uint32_t sample_rates[] = {44100, 48000}; -#else - const uint32_t sample_rates[] = {44100, 48000, 88200, 96000}; -#endif +const uint32_t sample_rates[] = {44100, 48000}; uint32_t current_sample_rate = 44100; diff --git a/examples/device/uac2_headset/src/tusb_config.h b/examples/device/uac2_headset/src/tusb_config.h index 4b08fa676..328e35f52 100644 --- a/examples/device/uac2_headset/src/tusb_config.h +++ b/examples/device/uac2_headset/src/tusb_config.h @@ -114,11 +114,9 @@ extern "C" { #define CFG_TUD_AUDIO_FUNC_1_N_FORMATS 2 // Audio format type I specifications -#if defined(__RX__) -#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 48000 // 16bit/48kHz is the best quality for Renesas RX -#else -#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 96000 // 24bit/96kHz is the best quality for full-speed, high-speed is needed beyond this -#endif +/* 24bit/48kHz is the best quality for headset or 24bit/96kHz for 2ch speaker, + high-speed is needed beyond this */ +#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 48000 #define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX 1 #define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX 2 -- cgit v1.3.1 From 0d4465a0983dc6eda1aa59efe4d4b0414aba97ff Mon Sep 17 00:00:00 2001 From: HiFiPhile Date: Tue, 9 Apr 2024 23:11:43 +0200 Subject: Optimize audio_4_channel_mic waveform data. --- examples/device/audio_4_channel_mic/src/main.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'examples') diff --git a/examples/device/audio_4_channel_mic/src/main.c b/examples/device/audio_4_channel_mic/src/main.c index 1de4f9dac..10e6fe88a 100644 --- a/examples/device/audio_4_channel_mic/src/main.c +++ b/examples/device/audio_4_channel_mic/src/main.c @@ -104,39 +104,39 @@ int main(void) // Generate dummy data #if CFG_TUD_AUDIO_ENABLE_ENCODING uint16_t * p_buff = i2s_dummy_buffer[0]; - uint16_t dataVal = 1; + uint16_t dataVal = 0; for (uint16_t cnt = 0; cnt < AUDIO_SAMPLE_RATE/1000; cnt++) { // CH0 saw wave *p_buff++ = dataVal; // CH1 inverted saw wave - *p_buff++ = 60 + AUDIO_SAMPLE_RATE/1000 - dataVal; - dataVal++; + *p_buff++ = 3200 + AUDIO_SAMPLE_RATE/1000 - dataVal; + dataVal+= 32; } p_buff = i2s_dummy_buffer[1]; for (uint16_t cnt = 0; cnt < AUDIO_SAMPLE_RATE/1000; cnt++) { // CH3 square wave - *p_buff++ = cnt < (AUDIO_SAMPLE_RATE/1000/2) ? 120:170; + *p_buff++ = cnt < (AUDIO_SAMPLE_RATE/1000/2) ? 3400:5000; // CH4 sinus wave float t = 2*3.1415f * cnt / (AUDIO_SAMPLE_RATE/1000); - *p_buff++ = (uint16_t)(sinf(t) * 25) + 200; + *p_buff++ = (uint16_t)((int16_t)(sinf(t) * 750) + 6000); } #else uint16_t * p_buff = i2s_dummy_buffer; - uint16_t dataVal = 1; + uint16_t dataVal = 0; for (uint16_t cnt = 0; cnt < AUDIO_SAMPLE_RATE/1000; cnt++) { // CH0 saw wave *p_buff++ = dataVal; // CH1 inverted saw wave - *p_buff++ = 60 + AUDIO_SAMPLE_RATE/1000 - dataVal; - dataVal++; + *p_buff++ = 3200 + AUDIO_SAMPLE_RATE/1000 - dataVal; + dataVal+= 32; // CH3 square wave - *p_buff++ = cnt < (AUDIO_SAMPLE_RATE/1000/2) ? 120:170; + *p_buff++ = cnt < (AUDIO_SAMPLE_RATE/1000/2) ? 3400:5000; // CH4 sinus wave float t = 2*3.1415f * cnt / (AUDIO_SAMPLE_RATE/1000); - *p_buff++ = (uint16_t)(sinf(t) * 25) + 200; + *p_buff++ = (uint16_t)((int16_t)(sinf(t) * 750) + 6000); } #endif -- cgit v1.3.1