python跑科大讯飞语音唤醒

最近，自己尝试做一个智能车载系统时。需要用到语音唤醒功能，于是就用到了科大讯飞的语音唤醒。这是地址：控制台-讯飞开放平台 (xfyun.cn)

填好唤醒词后下载对应的SDK,我下载的是Windows的

这是下载下来的SDK文件目录：

我们直接将bin目录复制粘贴到你的项目中即可进行使用（我之前将这个SDK放没有放到我的项目中，结果一直保错：| INFO | __main__:ivw_wakeup:54 - QIVWSessionBegin failed, error code is: 10102）

语音唤醒代码示例：

import os
from ctypes import cdll, byref, string_at, c_void_p, CFUNCTYPE, c_char_p, c_uint64, c_int64
import pyaudio
from loguru import logger



# 唤醒成功后打印的日志
def py_ivw_callback(sessionID, msg, param1, param2, info, userDate):
    # typedef int( *ivw_ntf_handler)( const char *sessionID, int msg, int param1, int param2, const void *info, void *userData );
    # 在此处编辑唤醒后的动作
    print("sessionID =>", sessionID)
    print("msg =>", msg)
    print("param1 =>", param1)
    print("param2 =>", param2)
    print("info =>", info)
    print("userDate =>", userDate)


CALLBACKFUNC = CFUNCTYPE(None, c_char_p, c_uint64,
                         c_uint64, c_uint64, c_void_p, c_void_p)
pCallbackFunc = CALLBACKFUNC(py_ivw_callback)


def ivw_wakeup():
    try:
        msc_load_library = r'.\bin\msc_x64.dll'
        app_id = '5277f5fd'  # 填写自己的app_id
        ivw_threshold = '0:1450'
        jet_path = os.getcwd() + r'.\bin\msc\res\ivw\wakeupresource.jet'
        work_dir = 'fo|' + jet_path
    except Exception as e:
        return e

    # ret 成功码
    MSP_SUCCESS = 0

    dll = cdll.LoadLibrary(msc_load_library)
    errorCode = c_int64()
    sessionID = c_void_p()
    # MSPLogin
    Login_params = "appid={},engine_start=ivw".format(app_id)
    Login_params = bytes(Login_params, encoding="utf8")
    ret = dll.MSPLogin(None, None, Login_params)
    if MSP_SUCCESS != ret:
        logger.info("MSPLogin failed, error code is: %d", ret)
        return

    # QIVWSessionBegin
    Begin_params = "sst=wakeup,ivw_threshold={},ivw_res_path={}".format(
        ivw_threshold, work_dir)
    Begin_params = bytes(Begin_params, encoding="utf8")
    dll.QIVWSessionBegin.restype = c_char_p
    sessionID = dll.QIVWSessionBegin(None, Begin_params, byref(errorCode))
    if MSP_SUCCESS != errorCode.value:
        logger.info("QIVWSessionBegin failed, error code is: {}".format(
            errorCode.value))
        return

    # QIVWRegisterNotify
    dll.QIVWRegisterNotify.argtypes = [c_char_p, c_void_p, c_void_p]
    ret = dll.QIVWRegisterNotify(sessionID, pCallbackFunc, None)
    if MSP_SUCCESS != ret:
        logger.info("QIVWRegisterNotify failed, error code is: {}".format(ret))
        return

    # QIVWAudioWrite
    # 创建PyAudio对象
    pa = pyaudio.PyAudio()

    # 设置音频参数
    sample_rate = 16000
    chunk_size = 1024
    format = pyaudio.paInt16
    channels = 1

    # 打开音频流
    stream = pa.open(format=format,
                     channels=channels,
                     rate=sample_rate,
                     input=True,
                     frames_per_buffer=chunk_size)

    # 开始录制音频
    logger.info("* start recording")
    ret = MSP_SUCCESS
    while ret == MSP_SUCCESS:  # 这里会一直进行监听你的唤醒，只要监听到你的唤醒就调用上面的py_ivw_callback函数打印日志
        audio_data = stream.read(chunk_size)
        audio_len = len(audio_data)
        ret = dll.QIVWAudioWrite(sessionID, audio_data, audio_len, 2)
    logger.info('QIVWAudioWrite ret =>{}', ret)
    logger.info("* done recording")

    # 关闭音频流
    stream.stop_stream()
    stream.close()

    # 终止PyAudio对象
    pa.terminate()


if __name__ == '__main__':
    ivw_wakeup()

我们需要将我们之前复制到项目中的bin目录下的msc_x64.dll和wakeupresource.jet文件路径放到指定位置，其他的位置基本不用改

运行起来后，当我们喊出唤醒词后就会打印信息

参考up：

http://t.csdn.cn/FS9zohttp://t.csdn.cn/FS9zo官方文档：

MSC for Windows&Linux API V1.4 | 讯飞开放平台文档中心

错误码查询 - 讯飞开放平台 (xfyun.cn)

python跑科大讯飞语音唤醒

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