【Open-Source】Reverb and Echo Control for Mixing Console Microphone Based on T5L

——From DWIN Developer Forum

We are pleased to present an award-winning open-source case from the DWIN Developer Forum today: reverb and echo control for mixing console microphone based on the T5L chip. Our engineer uses an 800x480 resolution display to interact with the reverb development board through the UART 4 of T5L, enabling precise adjustment of critical audio parameters such as reverb, echo, wet sound, dry sound, acoustic, decay and delay for superior audio effects.

[UI Materials]

[GUI Project Design]

【C51 Project】

(1) The main program for the screen is as follows:

void main(){

    INIT_CPU();//System Initialisation

    PORT_Init();//Initialize IO port

    T0_Init();//Initialize timer 0

    T2_Init();//Initialize timer 2

    my_UART4_Init(115200);

    uart_init();//Initialize serial port

    ws2812_writ_byte(8);//Initialize LED light

    RetMicSet();

    delay_ms(1000);

    ChangePage(1);

    while(1){

        Uart_Handle_all();

        OneMsHandle();//1Ms each time

        TenMsHandle();

        Read_0xF00();//Data automatic upload

    }

}

void TenMsHandle(void)

{

    if(!TenmsFlag)

    return;

    TenmsFlag=0;

    HunX_Wet();

    HunX_Dry();

    HunX_WeiYing();

    HunX_ShuaiJian();

    HunX_Switch();

    Echo_Wet();

    Echo_Dry();

    Echo_Delay();

    Echo_ShuaiJian();

    Echo_Switch();

}

void HunX_Wet(void)

{

    u16readst=0;

    readst=Read_Dgus(0x1200);

    if(readst==Mic_Set.MicWetNum)

    return;

    Mic_Set.MicWetNum=readst;

    MicEffectSend(Mic_Set.MicWetNum*10,

    Mic_Set.MicDryNum*10,

    Mic_Set.MicDiffNum*5,

    Mic_Set.MicDecayNum*5,

    Mic_Set.HunXiangSW);

 

(2) The reverb-related parameters are as follows

#if 1

intreverb_parameter_val(u16 wet,u16 dry,u8 diffusion,u8 decayfactor,

u8 is_bypass,u8 idmode)

{

    #if defined(TCFG_MIC_EFFECT_ENABLE)&& TCFG_MIC_EFFECT_ENABLE

    #if 1

    u8 mode_id = idmode+5;

    Plate_reverb_TOOL_SET *parmt = &eff_mode[mode_id - mic_mode_seq0].plate_reverb_parm;

    parmt->parm.wet=wet;

    parmt->parm.dry=dry;

    parmt->parm.diffusion=diffusion;

    parmt->parm.decayfactor=decayfactor;

    parmt->is_bypass=is_bypass;

    plate_reverb_update_parm(&parmt->parm, parmt->is_bypass);

    #elif 1

    u8 mode_id = idmode+5;

    //memcpy(&eff_mode[mode_id - mic_mode_seq0].echo_parm,&packet->data[1], sizeof(EF_ECHO_TOOL_SET));

    EF_ECHO_TOOL_SET *parmt = &eff_mode[mode_id -mic_mode_seq0].echo_parm;

    parmt->parm.delay=delay_ms;

    echo_updata_parm(&parmt->parm, parmt->is_bypass);

    #elif 0//PARM_DEBUG

    ECHO_PARM_SET *parm = &parmt->parm;

    log_debug("delay%d, decayval %d, filt_enable %d, lpf_cutoff %d, wetgain %d, drygain %d\n",

    parm->delay, parm->decayval,parm->filt_enable, parm->lpf_cutoff, parm->wetgain, parm->drygain);

    #endif

    #endif

    return 0;

}

 

(3) The echo-related parameters are as follows:

int Echo_parameter_val(u16 wet,u16 dry,u16 delay,u16 decayfactor,

u16 is_bypass,u16 idmode)

{

    #ifdefined(TCFG_MIC_EFFECT_ENABLE) &&TCFG_MIC_EFFECT_ENABLE

    #ifTCFG_MIC_EFFECT_SEL==MIC_EFFECT_REVERB_ECHO

    u8 mode_id = idmode+5;

    EF_ECHO_TOOL_SET*parmt = &eff_mode[mode_id - mic_mode_seq0].echo_parm;

    parmt->parm.wetgain=wet;

    parmt->parm.drygain=dry;

    parmt->parm.delay=delay;

    parmt->parm.decayval=decayfactor;

    parmt->is_bypass=is_bypass;

    echo_updata_parm(&parmt->parm, parmt->is_bypass);

    #endif

    return 0;

    #endif

}