def test_is_silent_false(self):
        """
        Test that the is_silent method returns False for non-silent audio frames.
        """
        pipeline = VoicePipeline(silence_threshold=0.001)
        # Create a non-silent audio frame (higher amplitude)
        speech_audio_data_np = np.random.uniform(-2, 2, size=480).astype(np.float32)
        speech_audio_data_bytes = (
            (speech_audio_data_np * 32768.0).astype(np.int16).tobytes()
        )

        assert pipeline._is_silent(speech_audio_data_np) is np.False_
        assert pipeline._is_silent(speech_audio_data_bytes) is np.False_

        Test that the is_silent method returns False for non-silent audio frames.
        
mlx_audio/sts/tests/test_voice_pipeline.py