安卓系统上位机搭配科大讯飞核心板AEC的评估方法
获取原始语音系统图
使用matlab生成一个测试用的单频信号，1KHz，1Vrms
clc
clear all;
close all;
f = 1000; % 定义信号频率
t = [0:0.00005:10];
signal = 1*sin(2*pi*f*t);
audiowrite('testSignal.wav',signal,16000);
sound(signal,20000);
plot(t,signal)生成文件效果如下
将文件通过adb推送到安卓系统中
C:\adb>adb push C:\temp\testSignal.wav storage/emulated/0/MyVoiceForder/Record
C:\temp\testSignal.wav: 1 file pushed. 4.6 MB/s (400046 bytes in 0.083s)
C:\adb>
进入目标文件夹确认文件已经推送成功
C:\adb>adb shell
root@avl7420:/ # cd storage/emulated/0/MyVoiceForder/Record
root@avl7420:/storage/emulated/0/MyVoiceForder/Record # ls
testSignal.wav
root@avl7420:/storage/emulated/0/MyVoiceForder/Record #
在安卓系统中，测试文件是否可以正常播放。
按照科大讯飞《XFM-EVB-01_XFM10X2调试音频操作说明》内容，将讯飞的核心板固件烧成输出原始数据，并测试分析结果数据。（其实我自己根据操作说明什么玩意儿都没搞出来）
以下是我自己乱搞的方法，不知对错，权当参考。
1】连接科大讯飞板与pc，通过adb进入科大讯飞板系统
C:\adb>adb shell
* daemon not running. starting it now at tcp:5037 *
* daemon started successfully *
BusyBox v1.22.1 (2017-05-16 11:15:11 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
_____ _ __ _
|_ _||_| ___ _ _ | | |_| ___ _ _ _ _
| | _ | || | | |__ | || || | ||_'_|
| | | || | ||^_^| |_____||_||_|_||___||_,_|
|_| |_||_|_||_|_| Based on OpenWrt 14.07!
----------------------------------------------
Tina Linux V1 (Barrier Breaker, unknown)
----------------------------------------------2】进入mnt文件夹，查看是否start.sh文件以及cae_app_save文件存在，捎带着可以看看固件的版本
root@sun8i:/# cd mnt
root@sun8i:/mnt# ls
cae_app libIvw60.so record.pcm start.sh
cae_app_save libcae.so recordtest.pcm version
ivw_resource.jet lingxi.pcm sdcard vibrationtest.pcm
root@sun8i:/mnt# cat version
name:1.0.2.1009_os&2.0.5.1022_libcae&1.0.7.1016_cae_app&1.0.7.1016_cae_app_save
ver:XFM10621_1.0.8.1017
date:2018/01/093】查看进程，并关闭./cae_app，方法同《操作说明》，下面是已经关闭了的结果
root@sun8i:/mnt# ps
PID USER VSZ STAT COMMAND
1 root 1056 S /sbin/procd
2 root 0 SW [kthreadd]
3 root 0 SW [ksoftirqd/0]
5 root 0 SW [kworker/u:0]
6 root 0 SW [migration/0]
7 root 0 SW [migration/1]
8 root 0 SW [kworker/1:0]
9 root 0 SW [ksoftirqd/1]
10 root 0 SW [migration/2]
12 root 0 SW [ksoftirqd/2]
13 root 0 SW [migration/3]
14 root 0 SW [kworker/3:0]
15 root 0 SW [ksoftirqd/3]
16 root 0 SW< [khelper]
17 root 0 SW [kdevtmpfs]
18 root 0 SW< [suspend]
19 root 0 SW< [sync_system_wor]
20 root 0 SW [kworker/0:1]
21 root 0 SW [kworker/2:1]
23 root 0 SW [kworker/1:1]
24 root 0 SW [sync_supers]
25 root 0 SW [bdi-default]
26 root 0 SW< [kblockd]
27 root 0 SW [sytem]
28 root 0 SW [khubd]
29 root 0 SW< [cfg80211]
30 root 0 SW [kdsm]
31 root 0 SW< [rpciod]
32 root 0 SW [kswapd0]
33 root 0 SW [fsnotify_mark]
34 root 0 SW< [nfsiod]
35 root 0 SW< [cifsiod]
36 root 0 SW< [crypto]
52 root 0 SW [kapmd]
53 root 0 SW [nand]
54 root 0 SW [nftld]
55 root 0 SW [nand_rcd]
63 root 0 SW< [f_mtp]
64 root 0 SW [file-storage]
65 root 0 SW [cfinteractive]
66 root 0 SW [auto_cpu_hotplu]
67 root 0 SW< [binder]
68 root 0 SW [kworker/u:2]
69 root 0 SW< [switch_resume]
70 root 0 SW< [codec_init]
72 root 0 SW< [krfcommd]
73 root 0 SW< [deferwq]
74 root 0 SW< [devfreq_wq]
75 root 0 SW< [ext4-dio-unwrit]
241 root 672 S /sbin/ubusd
242 root 592 S /sbin/askfirst ttyS0 /bin/ash --login
243 root 592 S /sbin/askfirst tty1 /bin/ash --login
411 root 1080 S /sbin/netifd
429 root 880 S /usr/sbin/odhcpd
457 root 1136 S /usr/sbin/telnetd -F -l /bin/login.sh
476 root 1140 S /usr/sbin/ntpd -n -p 0.openwrt.pool.ntp.org -p 1.ope
489 root 9112 S /bin/adbd -D
619 root 0 SW [kworker/3:2]
633 root 0 SW [kworker/2:2]
635 root 0 SW [kworker/0:2]
794 root 1140 S {adb_shell} /bin/sh /bin/adb_shell -
796 root 1144 S /bin/sh
803 root 0 SW [flush-93:0]
804 root 0 SW [kworker/0:0]
805 root 1140 R ps4】运行./start.sh开始录音，ctrl + c 结束录音
root@sun8i:/mnt# ./start.sh
: No such file or directory
get ver IF
ger version -1
uart_init(13874,eec0,1cb7c)[in]
uart_init()0[out]
CAENew(ivw_resource.jet, ff20, feb4)[in]
ivw_resource.jet : nResSize = 1101272
pEngineFace->IvwSetInstParam IVW_PARAM_CM_LEVEL success
pEngineFace->IvwSetInstParam IVW_PARAM_CM_LEVEL success
pEngineFace->IvwSetInstParam IVW_PARAM_CM_LEVEL success
CAENew [out] 0, b6383008
open device : default
frames is 256
audio play return 0
open device : plughw:1,0
frames is 256
audio play return 0
pthread_create nr_ctrl_looper ret = 0
record_start record :e87040
nr_ctrl_looper enter
frames=1536,record->buff_size=12288
RecordThread record:e87040
record start out 0
QueueReadThread record :e87040
sched_setaffinity return = -1
first data get 7
first data get 8
^C5】此时可以查看mnt中新生成的录音文件record.pcm，将这个文件pull到PC上
root@sun8i:/mnt# ls
cae_app libIvw60.so record.pcm start.sh
cae_app_save libcae.so recordtest.pcm version
ivw_resource.jet lingxi.pcm sdcard vibrationtest.pcm
root@sun8i:/mnt# exitC:\adb>adb pull mnt/record.pcm C:\temp
mnt/record.pcm: 1 file pulled. 8.1 MB/s (9936896 bytes in 1.172s)
6】应该是将文件切割后，然后将切割出来的pcm文件一个一个导入到audacity中，否则顺序就是乱的，正确的显示结果应该是下面这个样子的，我这个结果是因为硬件连接有问题MIC3跟MIC4的信号串了，里面还有问题就要查一下MIC1是否连接上了。
对应官方给出的通道与MIC对应顺序
7】我固件烧的是10621_1017这一版的，烧录时候注意要先按住 load 键，再连接数据线