VS1063录音（mp3格式），声音特别小

shc_lightour · 发表于 2015-2-4 17:33:29

如题，用的miniStm32开发板，MP3板子就是VS1053模块。录音初始化如下：

void VS_InitRecording(void)
{
WriteSci(SCI_CLOCKF,HZ_TO_SC_FREQ(12288000) | SC_MULT_53_50X | SC_ADD_53_00X);
WriteSci(SCI_RECRATE,48000);
WriteSci(SCI_RECGAIN,1024);
WriteSci(SCI_RECMODE, RM_63_FORMAT_MP3 | RM_63_ADC_MODE_MONO);
if (1) {

WriteSci(SCI_RECQUALITY, RQ_MODE_VBR | RQ_MULT_1000 | 160);
} else {

WriteSci(SCI_RECQUALITY, RQ_MODE_CBR | RQ_MULT_1000 | 160);
}

WriteSci(SCI_MODE,ReadSci(SCI_MODE)|SM_RESET|SM_LINE1|SM_ENCODE);
// WriteSci(SPI_AIADDR,0x0050);
WriteSci(SCI_VOL, 0x0c0c);
delay_ms(5);
}

录出来的声音特别小，大侠们帮忙看看是怎么回事？多谢啦