Nao6 - Nao Recode 录音

Nao 是一个可爱活泼的机器人，可以在它身上进行很多有趣的开发，当 Nao 可以获取到环境的语音信息之后又可以做什么有趣的事情呢？

这个问题留给读者自己探索，下面我们介绍一下如何使得 Nao 通过录音的方式，获取到环境的语音信息。

在开发的时候，通过 Naoqi API 进行对 Nao 的服务控制，要求本地的开发环境安装有 python 2.7，python 版本的 naoqi-sdk。当然，开发环境视情况而定，也可以是 C++、Java。

在本地上，主要是通过 Proxy 代理的模式，调用 ALAudioRecorder API 控制 Nao 的四个麦克风进行录音。

一、录音

1.1 只需要知道当前 Nao 的 IP 地址，即可通过 ALProxy 找到她的 API 接口。

from naoqi import ALProxyclass NaoRecode:def __init__(self, ip='192.168.124.2', port=9559):self.ip = ipself.port = portself.audio_recorder = Noneself.__connection_nao()def __connection_nao(self):try:self.audio_recorder = ALProxy('ALAudioRecorder', self.ip, self.port)except RuntimeError as e:print 'proxy-连接nao失败'else:print 'proxy-连接nao成功'if __name__ == '__main__':nao_recode = NaoRecode(ip='192.168.124.2')

2.1 连接成功后，便可以对 Nao 进行录音。因为 Nao 有四个麦克风，所以需要一个栈[0, 1]状态来控制使用哪一个麦克风。避免文件累积过多，造成使用空间的浪费，创建临时文件来存放录音数据。

import time
import tempfileclass NaoRecode:def __init__(self, ip='192.168.124.2', port=9559):self.ip = ipself.port = portself.audio_recorder = Noneself.__connection_nao()# 录音：4声道，16000采样率def recode(self):x = list()x.append(1)  # Left 左麦克风x.append(1)  # Right 右麦克风x.append(1)  # Front 前麦克风x.append(1)  # Rear 后麦克风y = tuple(x)tf = tempfile.NamedTemporaryFile()  # 创建临时存储文件fp = tf.nameprint '开始录音'try:self.audio_recorder.stopMicrophonesRecording()self.audio_recorder.startMicrophonesRecording(fp, "wav", 16000, y)time.sleep(5)  # 录音 5 秒self.audio_recorder.stopMicrophonesRecording()except RuntimeError as e:print '录音失败'tf.close()  # 关闭临时文件-->清除临时文件else:print '录音成功'print 'Nao 上录音文件路径' + fptf.close()  # 关闭临时文件-->清除临时文件return fp  # 返回录音文件的地址if __name__ == '__main__':nao_recode = NaoRecode(ip='192.168.124.2')file_path_local = nao_recode.recode()

这样就已经完成了 Nao 录音的工作，但是录音文件是存放在 Nao 身上的，在本地开发的需要，所以我们还需要把录音文件通过 ftp 协议下载到本地。

二、下载录音文件

2.1 使用 ftp 协议得先知道服务器的 IP 地址，登录用户的账号、密码，需要下载的文件路径地址，以及本地存放的路径地址。

import paramiko
import osclass DownloadFile:def __init__(self, hostname=None, port=22, username=None, password=None):self.hostname = hostnameself.port = portself.username = usernameself.password = passwordself.client = Noneself.__connection_with_ftp()def __connection_with_ftp(self):client = paramiko.Transport(self.hostname, self.port)try:client.connect(username=self.username, password=self.password)  # 连接服务器except:print 'ftp-连接nao失败'else:print 'ftp-连接nao成功'self.client = clientdef download_file(self, file_remote, file_local):file_remote = file_remotefile_local = file_localtry:sftp = paramiko.SFTPClient.from_transport(self.client)sftp.get(remotepath=file_remote, localpath=file_local)except:print '文件 ' + file_remote + ' 下载失败'os.remove(file_local)else:print '文件 ' + file_remote + ' 下载成功'if __name__ == '__main__':file_dir = '/home/yld/test.txt'file_loc = '../audio_file/test.txt'download_audio = DownloadFile(hostname='192.168.124.2', username='nao', password='nao')download_audio.download_file(file_remote=file_dir, file_local=file_loc)

2.2 这时候只需要调用 DownloadFile.download() 方法即可吧 Nao 上的录音文件下载到本地。

from download_file import DownloadFile
import timeclass NaoRecode:def __init__(self, ip='192.168.124.2', port=9559):self.ip = ipself.port = portself.audio_recorder = Noneself.__connection_nao()# 录音：4声道，16000采样率def recode(self):x = list()x.append(1)  # Left 左麦克风x.append(1)  # Right 右麦克风x.append(1)  # Front 前麦克风x.append(1)  # Rear 后麦克风y = tuple(x)tf = tempfile.NamedTemporaryFile()  # 创建临时存储文件fp = tf.nameprint '开始录音'try:self.audio_recorder.stopMicrophonesRecording()self.audio_recorder.startMicrophonesRecording(fp, "wav", 16000, y)time.sleep(5)  # 录音 5 秒self.audio_recorder.stopMicrophonesRecording()except RuntimeError as e:print '录音失败'tf.close()  # 关闭临时文件-->清除临时文件else:print '录音成功'print 'Nao 上录音文件路径' + fpreal_time = time.time()  # 获取当前系统时间-->毫秒级file_name = 'recode-' + str(real_time) + '.wav'fp = self.__download_audio_file(file_remote=fp, file_name=file_name)tf.close()  # 关闭临时文件-->清除临时文件return fp  # 返回录音文件的地址# 把录音文件下载到本地def __download_audio_file(self, file_remote, file_name):file_remote = file_remotefile_local = './audio_file/' + file_nametry:download_audio = DownloadFile(hostname=self.ip, port=22, username='nao', password='nao')download_audio.download_file(file_remote=file_remote, file_local=file_local)except:print '录音文件下载失败 ' + file_remotereturn file_localif __name__ == '__main__':nao_recode = NaoRecode(ip='192.168.124.2')file_path_local = nao_recode.recode()print '本地路径' + file_path_local

三、完整代码

3.1 nao_recode.py

from naoqi import ALProxy
from download_file import DownloadFile
import time
import tempfileclass NaoRecode:def __init__(self, ip='192.168.124.2', port=9559):self.ip = ipself.port = portself.audio_recorder = Noneself.__connection_nao()def __connection_nao(self):try:self.audio_recorder = ALProxy('ALAudioRecorder', self.ip, self.port)except RuntimeError as e:print 'proxy-连接nao失败'else:print 'proxy-连接nao成功'# 录音：4声道，16000采样率def recode(self):x = list()x.append(1)  # Left 左麦克风x.append(1)  # Right 右麦克风x.append(1)  # Front 前麦克风x.append(1)  # Rear 后麦克风y = tuple(x)tf = tempfile.NamedTemporaryFile()  # 创建临时存储文件fp = tf.nameprint '开始录音'try:self.audio_recorder.stopMicrophonesRecording()self.audio_recorder.startMicrophonesRecording(fp, "wav", 16000, y)time.sleep(5)  # 录音 5 秒self.audio_recorder.stopMicrophonesRecording()except RuntimeError as e:print '录音失败'tf.close()  # 关闭临时文件-->清除临时文件else:print '录音成功'print 'Nao 上录音文件路径' + fpreal_time = time.time()  # 获取当前系统时间-->毫秒级file_name = 'recode-' + str(real_time) + '.wav'fp = self.__download_audio_file(file_remote=fp, file_name=file_name)tf.close()  # 关闭临时文件-->清除临时文件return fp  # 返回录音文件的地址# 把录音文件下载到本地def __download_audio_file(self, file_remote, file_name):file_remote = file_remotefile_local = './audio_file/' + file_nametry:download_audio = DownloadFile(hostname=self.ip, port=22, username='nao', password='nao')download_audio.download_file(file_remote=file_remote, file_local=file_local)except:print '录音文件下载失败 ' + file_remotereturn file_localif __name__ == '__main__':nao_recode = NaoRecode(ip='192.168.124.2')file_path_local = nao_recode.recode()print '本地路径' + file_path_local

3.2 download_file.py

import paramiko
import osclass DownloadFile:def __init__(self, hostname=None, port=22, username=None, password=None):self.hostname = hostnameself.port = portself.username = usernameself.password = passwordself.client = Noneself.__connection_with_ftp()def __connection_with_ftp(self):client = paramiko.Transport(self.hostname, self.port)try:client.connect(username=self.username, password=self.password)  # 连接服务器except:print 'ftp-连接nao失败'else:print 'ftp-连接nao成功'self.client = clientdef download_file(self, file_remote, file_local):file_remote = file_remotefile_local = file_localtry:sftp = paramiko.SFTPClient.from_transport(self.client)sftp.get(remotepath=file_remote, localpath=file_local)except:print '文件 ' + file_remote + ' 下载失败'os.remove(file_local)else:print '文件 ' + file_remote + ' 下载成功'if __name__ == '__main__':file_dir = '/home/yld/test.txt'file_loc = '../audio_file/test.txt'download_audio = DownloadFile(hostname='192.168.121.2', username='nao', password='nao')download_audio.download_file(file_remote=file_dir, file_local=file_loc)