我有一个用例，如如果用户说话，我必须显示一些波形图标，用户停止说话时，波形图标必须消失，我如何检测用户是否在说话？请帮助我

override fun onResume() {
        checkValue(recorder.maxAmplitude);
    }
    fun checkValue(amplitude: Int) {
        var amplitude = amplitude
        try {
            if (amplitude > 1000) {
                amplitude = recorder.getMaxAmplitude()
                Thread.sleep(2000)
                isUserSpeaking.value = true
                Toast.makeText(this,"User Speaking", Toast.LENGTH_LONG).show()
            } else if (isUserSpeaking.value) {
                Toast.makeText(this,"User Speaking else if", Toast.LENGTH_LONG).show()
            }
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }