_setparam
_setparam(0, HAUD_AUDIO_PARAMS_INPUT_SRC, 0);
_setparam(1, HAUD_AUDIO_PARAMS_INPUT_ATTN_L, 0);
_setparam(2, HAUD_AUDIO_PARAMS_INPUT_ATTN_R, 0);
_setparam(3, HAUD_AUDIO_PARAMS_INPUT_RATE, HAUD_RATE_44100);
_setparam(4, HAUD_AUDIO_PARAMS_OUTPUT_RATE, HAUD_RATE_44100);
_setparam(5, HAUD_AUDIO_PARAMS_SPKR_GAIN_L, sc->sc_speaker_l_gain);
_setparam(6, HAUD_AUDIO_PARAMS_SPKR_GAIN_R, sc->sc_speaker_r_gain);