how to send voice message?

[rising32]

stop = () => {
NimSession.endAudioRecord();
console.log('audio length = ', this.state.audioLength);
};

record = () => {
NimSession.onTouchVoice();
NimSession.startAudioRecord();
};

when I send voice message to server,
NimSession.sendAudioMessage(path, duration);

in here, please explain about path in detail.....

now in my app, it occurs record error - 录音失败，请重试