這篇文章將為大家詳細(xì)講解有關(guān)如何實現(xiàn)基于樹莓派的語音機(jī)器人,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。

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準(zhǔn)備工作:樹莓派,音頻模塊,stm32單片機(jī),百度語音識別接口,喇叭。
整體思路:
1. 由于樹莓派沒有ADC模塊,所以這里借助于stm32的ADC模塊來實現(xiàn)將語音信號轉(zhuǎn)換成數(shù)字信號,然后通過串口傳 輸 到樹莓派你中,樹莓派你將數(shù)據(jù)組裝成wave文件,便于語音識別。
2. 通過http協(xié)議將組裝的語音文件上傳到百度語音識別平臺進(jìn)行識別。文檔說明(免費(fèi)調(diào)用)
3. 根據(jù)識別結(jié)果做出相應(yīng)的處理。
4. 對于需要播放語音時,根據(jù)百度語音合成接口合成語音然后使用mplayer播放出來。mplayer安裝參考 博客
部分代碼:
將音頻轉(zhuǎn)換成wave文件
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <wiringPi.h>
#include <wiringSerial.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include "listen.h"
//gcc -o uart uart.c -lwiringPi
typedef struct WAV_Format WAVHEADER;
#define MAX_LISTEN_SIZES 1024*70 //定義接收數(shù)據(jù)的大小
#define bty 460800//串口的波特率
struct listen*listenUart()
{
int fd,file;
char buff,buff2;
struct listen*liste=(struct listen*)malloc(sizeof(struct listen));
unsigned short size;
unsigned short*music,temp=0;
unsigned short max=0,min=0;
char*result=NULL;//存儲最后的返回值
int index=0,i=0;
char stop=1;
WAVHEADER wavHead;
music=(unsigned short*)malloc(MAX_LISTEN_SIZES*2);
result=(char*)malloc(MAX_LISTEN_SIZES*2+sizeof(WAVHEADER));
if(wiringPiSetup() < 0)return NULL;
if((fd = serialOpen ("/dev/ttyAMA0",bty))<0)
{
return NULL;
printf("serial err\n");
}
//file=open("abc.wav", O_RDWR|O_CREAT);
printf("oepn success\n");
//serialPrintf(fd,"Hello World!!!");
//需要對音頻信號作出處理,當(dāng)大于或者閾值時開始統(tǒng)計,知道錄制完成
int countTotal=0;
int countNumber= 1000;//統(tǒng)計個數(shù)
int countMax=2860;//最大值
int countMin=2840;//最小值
int startCount=1;
while(1)
{
if(index==MAX_LISTEN_SIZES)
{
break;
}
buff=serialGetchar(fd);
buff2=serialGetchar(fd);
if((buff2&0x0F0)!=0)
{
buff2=serialGetchar(fd);
}
else
{
size=buff2;
size=size<<8;
size=(size&0xFF00)|(buff&0xFF);
music[index]=size;
if(startCount==1)
{
countTotal=countTotal+size;
if(index>=countNumber)
{
int temp=countTotal/(countNumber+1);
if(temp>countMax||temp<countMin)
{
startCount=0;
//開始錄音
printf(":::::%d\n",temp);
index++;
}
else
{
printf("temp:%d\n",temp);
index=0;
}
countTotal=0;
}
else
{
index++;
}
}
else
{
index++;
}
}
}
serialClose(fd);
printf("end\n");
//對音頻進(jìn)行放大處理
max=music[0];
min=music[0];
for(i=i;i<MAX_LISTEN_SIZES;i++){
temp=music[i];
if(temp>max)
{
max=temp;
}
if(temp<min)
{
min=temp;
}
}
size=max-min;
for(i=0;i<MAX_LISTEN_SIZES;i++)
{
music[i]=(unsigned short)((music[i]-min)*1.0*6000/size);
}
wavHead.ChunkID=0x46464952; /* "RIFF" */
wavHead.ChunkSize=sizeof(wavHead)+MAX_LISTEN_SIZES*2 -8; /* 36 + Subchunk2Size */
wavHead.Format=0x45564157; /* "WAVE" */
wavHead.Subchunk1ID=0x20746D66; /* "fmt " */
wavHead.Subchunk1Size=0x10; /* 16 for PCM */
wavHead.AudioFormat=0x01; /* PCM = 1*/
wavHead.NumChannels=0x01; /* Mono = 1, Stereo = 2, etc. */
wavHead.SampleRate=0x3E80; /* 8000, 44100, etc. */
wavHead.ByteRate=0x7D00; /* = SampleRate * NumChannels * BitsPerSample/8 */
wavHead.BlockAlign=0x02; /* = NumChannels * BitsPerSample/8 */
wavHead.BitsPerSample=0x10; /* 8bits, 16bits, etc. */
wavHead.Subchunk2ID=0x61746164; /* "data" */
wavHead.Subchunk2Size=MAX_LISTEN_SIZES*2; /* data size */
//返回數(shù)據(jù)賦值
memcpy(result,(char*)&wavHead,sizeof(WAVHEADER));
memcpy(result+sizeof(WAVHEADER),(char*)music,MAX_LISTEN_SIZES*2);
liste->length=sizeof(WAVHEADER)+MAX_LISTEN_SIZES*2;
liste->data=result;
return liste;
}將音頻識別成文字
#include "convertText.h"
static Buffer *listen_buff2=NULL;
size_t listen_getData2(void *ptr, size_t size, size_t nmemb, void *stream)
{
appendBuffer(listen_buff2,ptr,nmemb);
return nmemb;
}
int listenText(char*result2)
{
listen_buff2=initBuffer();
struct listen*lsn=listenUart();
char*base;
int fileLength=lsn->length;
int result=1;
int baseSize=(lsn->length/3)*4+(lsn->length%3)*2+1;
base=(char*)malloc(baseSize);
base64_encode(lsn->data,lsn->length,base);
//發(fā)送請求
free(lsn->data);
free(lsn);
int code=initToken();
if(code==1)
{
char*token=getToken();
///開始創(chuàng)建json字符串
cJSON * root = cJSON_CreateObject();
cJSON_AddItemToObject(root, "format", cJSON_CreateString("wav"));
cJSON_AddItemToObject(root, "rate", cJSON_CreateString("16000"));
cJSON_AddItemToObject(root, "channel", cJSON_CreateString("1"));
cJSON_AddItemToObject(root, "cuid", cJSON_CreateString("34-68-95-91-77-43"));
cJSON_AddItemToObject(root, "token", cJSON_CreateString(token));
cJSON_AddItemToObject(root, "dev_pid", cJSON_CreateString("1537"));
cJSON_AddItemToObject(root, "speech", cJSON_CreateString(base));
cJSON_AddItemToObject(root, "len", cJSON_CreateNumber(fileLength));
char*jsonParam=cJSON_PrintUnformatted(root);
char*apiurl="http://vop.baidu.com/server_api";
CURL* curl;
CURLcode res;
// ptr = curl_easy_escape(NULL, (char *)a, asize);
curl = curl_easy_init();
struct curl_slist* headers = NULL;
headers = curl_slist_append(headers, "Content-Type:application/json");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_URL, apiurl);
curl_easy_setopt(curl, CURLOPT_TIMEOUT, 60);
curl_easy_setopt(curl, CURLOPT_POST, 1);
//http://vop.baidu.com/server_api
//CURLOPT_POSTFIELDS,CURLOPT_POSTFIELDSIZE
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, jsonParam);
curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, strlen(jsonParam));
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, listen_getData2);
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
cJSON_Delete(root);
curl_slist_free_all(headers);
free(token);
free(jsonParam);
if (res == CURLE_OK)
{
char*chars;
char*tempresult=(char*)malloc(listen_buff2->length+1);
memcpy(tempresult,listen_buff2->buff,listen_buff2->length);
tempresult[listen_buff2->length]=0;
cJSON *json;
cJSON * item = NULL;
cJSON*errCode;
json=cJSON_Parse(tempresult);
item=cJSON_GetObjectItem(json, "result");
errCode=cJSON_GetObjectItem(json, "err_no");
if(errCode->valueint!=0)
{
return -3;
}
chars=cJSON_GetArrayItem(item,0)->valuestring;
strcpy(result2,chars);
free(tempresult);
cJSON_Delete(json);
return 0;
}
else
{
return -3;
}
}
else
{
return -2;
}
return -1;
}主程序
#include<stdio.h>
#include<string.h>
#include "convertText.h"
#include "mp3.h"
#include "led.h"
#include "say.h"
//gcc -o robot robot.o mp3.o Buffer.o base64.o token.o cJSON.o listen.o convertText.o led.o say.o -lcurl -lm -lwiringPi -lmad
void sayChina(char*china)
{
int resp=initSay(china);
printf("resp:%d\n",resp);
if(resp==1)
{
int tte=playData("temp.mp3");
printf("tte:%d\n",tte);
}
}
int main()
{
char text[100]={0};
sayChina("你好,我是小志,有什么可以為你服務(wù)");
while(1)
{
printf(";;;;;;;;");
int code= listenText(text);
if(code==0)
{
printf("result:%s\n",text);
if(strstr(text,"播放音樂,")!=NULL||strstr(text,"打開音樂,")!=NULL)
{
sayChina("正在為你打開音樂");
musicPlayFile("mu.mp3");
}
if(strstr(text,"打開燈,")!=NULL||strstr(text,"打開,")!=NULL)
{
sayChina("好的");
printf("正在打開");
ledOn();
}
if(strstr(text,"關(guān)閉燈,")!=NULL||strstr(text,"關(guān)閉,")!=NULL||strstr(text,"完畢,")!=NULL)
{
sayChina("好的");
printf("正在關(guān)閉");
ledOff();
}
if(strstr(text,"你叫什么")!=NULL||strstr(text,"你叫什么名字")!=NULL||strstr(text,"名字")!=NULL)
{
sayChina("我叫小志");
}
if(strstr(text,"今天天氣咋樣")!=NULL||strstr(text,"天氣")!=NULL)
{
sayChina("外面在下雨,有點(diǎn)冷");
}
if(strstr(text,"中午好")!=NULL||strstr(text,"中午")!=NULL)
{
sayChina("好什么啊,我還沒吃飯呢");
}
if(strstr(text,"你多大了")!=NULL||strstr(text,"今年幾歲")!=NULL||strstr(text,"幾歲")!=NULL)
{
sayChina("我才出生,還沒滿月");
}
}
else
{
printf("error\n");
}
}
return 0;
}關(guān)于“如何實現(xiàn)基于樹莓派的語音機(jī)器人”這篇文章就分享到這里了,希望以上內(nèi)容可以對大家有一定的幫助,使各位可以學(xué)到更多知識,如果覺得文章不錯,請把它分享出去讓更多的人看到。
當(dāng)前題目:如何實現(xiàn)基于樹莓派的語音機(jī)器人
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