diff --git a/cplusplus/level1_single_api/6_media/1_audio/audio_gitee/sample_audio.c b/cplusplus/level1_single_api/6_media/1_audio/audio_gitee/sample_audio.c
index 86960a03bfba1d6800f614bbf9b627ba7d50b7b1..19e33641e49adef4e2f50ccdfe49a533310c1550 100644
--- a/cplusplus/level1_single_api/6_media/1_audio/audio_gitee/sample_audio.c
+++ b/cplusplus/level1_single_api/6_media/1_audio/audio_gitee/sample_audio.c
@@ -54,12 +54,13 @@ hi_s32 sample_comm_sys_init(void)
 
 static hi_void sample_audio_aio_init_param(hi_aio_attr *aio_attr)
 {
-    aio_attr->chn_cnt             = 1;
+    aio_attr->chn_cnt             = 2;
     aio_attr->point_num_per_frame = 960;
     aio_attr->expand_flag         = 0;
     aio_attr->frame_num           = 30;
     aio_attr->clk_share           = 1;
-    aio_attr->snd_mode            = HI_AUDIO_SOUND_MODE_MONO;
+    // aio_attr->snd_mode            = HI_AUDIO_SOUND_MODE_MONO;    /* single voice */
+    aio_attr->snd_mode            = HI_AUDIO_SOUND_MODE_STEREO;     /* double voice */  
     aio_attr->sample_rate         = HI_AUDIO_SAMPLE_RATE_48000;
     aio_attr->bit_width           = HI_AUDIO_BIT_WIDTH_16;
     aio_attr->work_mode           = HI_AIO_MODE_I2S_MASTER;
@@ -239,6 +240,7 @@ static hi_s32 audio_ai_get_frame_and_send(sample_ai *ai_ctl, FILE *capture_fd)
     }
 
     fwrite(frame.virt_addr[0], 1, frame.len, capture_fd);
+    fwrite(frame.virt_addr[1], 1, frame.len, capture_fd);
 
     /* finally you must release the stream */
     ret = hi_mpi_ai_release_frame(ai_ctl->ai_dev, ai_ctl->ai_chn, &frame, &aec_frm);