e30b50ff849a417b8e70d121edd2e85f0565eee1,data/data_loader.py,NoiseInjection,inject_noise_sample,#NoiseInjection#Any#Any#Any#,59

Before Change

        noise_src = load_audio(noise_path)
        noise_offset_fraction = np.random.rand()
        noise_dst = np.zeros_like(data)
        src_offset = int(len(noise_src) * noise_offset_fraction)
        src_left = len(noise_src) - src_offset
        dst_offset = 0
        dst_left = len(data)
        while dst_left > 0:

After Change

    def inject_noise_sample(self, data, noise_path, noise_level):
        noise_len = get_audio_length(noise_path)
        data_len = len(data) / self.sample_rate
        noise_start = np.random.rand() * (noise_len - data_len)
        noise_end = noise_start + data_len
        noise_dst = audio_with_sox(noise_path, self.sample_rate, noise_start, noise_end)
        assert len(data) == len(noise_dst)
        noise_energy = np.sqrt(noise_dst.dot(noise_dst)/noise_dst.size)
        data_energy = np.sqrt(data.dot(data)/data.size)
        data += noise_level * noise_dst * data_energy / noise_energy
        return data

Instances