8种机械键盘轴体对比
本人程序员,要买一个写代码的键盘,请问红轴和茶轴怎么选?
参考:
配置:
喇叭:3.5音频口
麦克风:摄像头自带麦克风(Usb)
1. 安装需要的软件1
2sudo apt-get install python-pip mplayer flac python2.7-dev libcurl4-gnutls-dev
sudo pip install requests pycurl
2. 配置配置麦克风和音箱1
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10$ cat /proc/asound/cards
0 [ALSA ]: bcm2835 - bcm2835 ALSA
bcm2835 ALSA
1 [Camera ]: USB-Audio - USB 2.0 Camera
Sonix Technology Co., Ltd. USB 2.0 Camera at usb-3f980000.usb-1.2, high speed
$ cat /proc/asound/modules
0 snd_bcm2835
1 snd_usb_audio
第一个命令查看声卡是否存在
第二个命令应该是看声卡的驱动的
调整输入输出音频工具alsamixer:sudo alsamixer
3. 播放声音aplay make.wav
结果声音没有播放
网上查了,
By default output will be automatic (hdmi if hdmi supports audio, otherwise analogue). You can force it with:amixer cset numid=3 where n is 0=auto, 1=headphones, 2=hdmi.
If you have pulseaudio installed you need to also specify the card number:amixer -c 0 cset numid=3
所以运行amixer cset numid=3 1
就可以听到3.5输出了
4. 麦克风测试sudo arecord –duration=10 –device=plughw:1,0 –format=cd aaa.wav
指令中的’–device=plughw:1,0’ 选项指派特定的录音设备,而Raspberry Pi的内置音效设备是’plughw:0,0’
使用百度api进行语音播放:
5. 使用百度API进行语音识别和播放
测试取的token:1
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11import requests
import json
url = '/oauth/2.0/token'
payload = {'grant_type':'client_credentials',
'client_id':'ZEzwlE2gipnqoE3jqiCKN7SN',
'client_secret':'KOyWkyE57qWnDnFoc5afwIk0zBMw2X1p'}
r = requests.post(url,data=payload)
print json.loads(r.text)['access_token']
测试ok后,开始正式写:
大致思路:
将请求的token保存到文件中,然后读取文件中的accesstoken,判断token的日期是否有效,无效重新请求token。
代码:
app.py1
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131# -*- coding:utf8 -*-
import requests
import os
import json
import time
import uuid
import base64
class API(object):
def __init__(self):
dic = {
'hello':'欢迎使用语音播放',
'error':'识别错误',
}
for key in dic:
self.txt2audio(dic[key],key)
if key == 'hello':
self.play(key)
pass
def get_token(self):
token = None
if os.path.exists('token'):
file = open('token','r')
token = file.read()
file.close()
if json.loads(token)['expires'] < time.time():
token = self.req_token()
else:
print "load cache token"
pass
else:
token = self.req_token()
return json.loads(token)['access_token']
def req_token(self):
print "request new token"
token = None
url = '/oauth/2.0/token'
key = 'ZEzwlE2gipnqoE3jqiCKN7SN'
secret = 'KOyWkyE57qWnDnFoc5afwIk0zBMw2X1p'
payload = {'grant_type':'client_credentials',
'client_id':key,
'client_secret':secret}
r = requests.post(url,data=payload)
token = r.text
jtoken = json.loads(token)
jtoken['expires'] = jtoken['expires_in'] + time.time()
token = json.dumps(jtoken)
file = open('token','w')
file.write(token)
file.close()
return token
def txt2audio(self,txt,audio='tmp'):
access_token = self.get_token()
url = "/text2audio"
payload = {
'tex':txt,
'lan':'zh',
'tok':access_token,
'ctp':1,
'cuid':uuid.UUID(int = uuid.getnode()).hex,
'spd':5,
'pit':8,
'vol':9,
'per':1,
}
r = requests.post(url,payload)
if r.headers['Content-Type'] == 'audio/mp3':
file = open(audio + '.mp3','w')
file.write(r.content)
file.close()
else:
self.play('error')
print r.text
pass
def audio2txt(self,file='rec'):
access_token = self.get_token()
url="/server_api"
self.txt2audio('请说:')
self.play('tmp')
os.system('arecord --duration=2 -c 1 --device=plughw:1,0 -f S16_LE -t wav -v --rate=16000 ' + file + '.wav')
f = open(file + '.wav','r')
sound = f.read()
f.close()
payload = {
'format':'wav',
'rate':16000,
'channel':1,
'cuid':uuid.UUID(int = uuid.getnode()).hex,
'token':access_token,
'lan':'zh',
'speech':base64.b64encode(sound),
'len':len(sound),
}
header = {'Content-Type':'application/json'}
r = requests.post(url,data=json.dumps(payload),headers=header)
print r.text
jret = json.loads(r.text)
if jret.has_key('result'):
ret = json.loads(r.text)['result'][0].split(',')[0]
else:
ret = ""
return ret
pass
def play(self,file='tmp'):
# can not play the mp3 by aplay
# os.system("aplay " + file + ".mp3")
os.system("mpg321 " + file + ".mp3")
pass
baidu.py1
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48# -*- coding:utf8 -*-
from baidu import API
import RPi.GPIO as GPIO
import time
import requests
import uuid
import json
pin = 13
GPIO.setmode(GPIO.BCM)
GPIO.setup(pin, GPIO.IN)
baidu = API()
# baidu.txt2audio("你好")
# baidu.play('tmp')
def get_tuling(text):
url='/openapi/api'
data={'key':'fa78fe2fbb85c914c7126d42bc7c3ebb','info':text,'userid':str(uuid.UUID(int = uuid.getnode()).hex,)}
r = requests.post(url,data=data)
ans = json.loads(r.text)
return ans
while True:
change = False
while GPIO.input(pin) == GPIO.LOW:
change = True
time.sleep(0.005)
if change == True:
#baidu.txt2audio('我听着,请说指令:')
text = baidu.audio2txt()
print text
if len(text) > 0:
rep = get_tuling(text)
rep = rep['text']
print rep
else:
rep = "我没有听清"
baidu.txt2audio(rep)
baidu.play()
change = False
time.sleep(1)
遇到坑:mp3格式只能通过mpg321播放
读取文件token = file.readlines()[0],是一个列表,所以需要先取第一个再用json转。
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