Spaces:
Running
Running
| import glob | |
| import os | |
| import random | |
| import numpy as np | |
| from scipy import signal | |
| from TTS.encoder.models.lstm import LSTMSpeakerEncoder | |
| from TTS.encoder.models.resnet import ResNetSpeakerEncoder | |
| class AugmentWAV(object): | |
| def __init__(self, ap, augmentation_config): | |
| self.ap = ap | |
| self.use_additive_noise = False | |
| if "additive" in augmentation_config.keys(): | |
| self.additive_noise_config = augmentation_config["additive"] | |
| additive_path = self.additive_noise_config["sounds_path"] | |
| if additive_path: | |
| self.use_additive_noise = True | |
| # get noise types | |
| self.additive_noise_types = [] | |
| for key in self.additive_noise_config.keys(): | |
| if isinstance(self.additive_noise_config[key], dict): | |
| self.additive_noise_types.append(key) | |
| additive_files = glob.glob(os.path.join(additive_path, "**/*.wav"), recursive=True) | |
| self.noise_list = {} | |
| for wav_file in additive_files: | |
| noise_dir = wav_file.replace(additive_path, "").split(os.sep)[0] | |
| # ignore not listed directories | |
| if noise_dir not in self.additive_noise_types: | |
| continue | |
| if not noise_dir in self.noise_list: | |
| self.noise_list[noise_dir] = [] | |
| self.noise_list[noise_dir].append(wav_file) | |
| print( | |
| f" | > Using Additive Noise Augmentation: with {len(additive_files)} audios instances from {self.additive_noise_types}" | |
| ) | |
| self.use_rir = False | |
| if "rir" in augmentation_config.keys(): | |
| self.rir_config = augmentation_config["rir"] | |
| if self.rir_config["rir_path"]: | |
| self.rir_files = glob.glob(os.path.join(self.rir_config["rir_path"], "**/*.wav"), recursive=True) | |
| self.use_rir = True | |
| print(f" | > Using RIR Noise Augmentation: with {len(self.rir_files)} audios instances") | |
| self.create_augmentation_global_list() | |
| def create_augmentation_global_list(self): | |
| if self.use_additive_noise: | |
| self.global_noise_list = self.additive_noise_types | |
| else: | |
| self.global_noise_list = [] | |
| if self.use_rir: | |
| self.global_noise_list.append("RIR_AUG") | |
| def additive_noise(self, noise_type, audio): | |
| clean_db = 10 * np.log10(np.mean(audio**2) + 1e-4) | |
| noise_list = random.sample( | |
| self.noise_list[noise_type], | |
| random.randint( | |
| self.additive_noise_config[noise_type]["min_num_noises"], | |
| self.additive_noise_config[noise_type]["max_num_noises"], | |
| ), | |
| ) | |
| audio_len = audio.shape[0] | |
| noises_wav = None | |
| for noise in noise_list: | |
| noiseaudio = self.ap.load_wav(noise, sr=self.ap.sample_rate)[:audio_len] | |
| if noiseaudio.shape[0] < audio_len: | |
| continue | |
| noise_snr = random.uniform( | |
| self.additive_noise_config[noise_type]["min_snr_in_db"], | |
| self.additive_noise_config[noise_type]["max_num_noises"], | |
| ) | |
| noise_db = 10 * np.log10(np.mean(noiseaudio**2) + 1e-4) | |
| noise_wav = np.sqrt(10 ** ((clean_db - noise_db - noise_snr) / 10)) * noiseaudio | |
| if noises_wav is None: | |
| noises_wav = noise_wav | |
| else: | |
| noises_wav += noise_wav | |
| # if all possible files is less than audio, choose other files | |
| if noises_wav is None: | |
| return self.additive_noise(noise_type, audio) | |
| return audio + noises_wav | |
| def reverberate(self, audio): | |
| audio_len = audio.shape[0] | |
| rir_file = random.choice(self.rir_files) | |
| rir = self.ap.load_wav(rir_file, sr=self.ap.sample_rate) | |
| rir = rir / np.sqrt(np.sum(rir**2)) | |
| return signal.convolve(audio, rir, mode=self.rir_config["conv_mode"])[:audio_len] | |
| def apply_one(self, audio): | |
| noise_type = random.choice(self.global_noise_list) | |
| if noise_type == "RIR_AUG": | |
| return self.reverberate(audio) | |
| return self.additive_noise(noise_type, audio) | |
| def setup_encoder_model(config: "Coqpit"): | |
| if config.model_params["model_name"].lower() == "lstm": | |
| model = LSTMSpeakerEncoder( | |
| config.model_params["input_dim"], | |
| config.model_params["proj_dim"], | |
| config.model_params["lstm_dim"], | |
| config.model_params["num_lstm_layers"], | |
| use_torch_spec=config.model_params.get("use_torch_spec", False), | |
| audio_config=config.audio, | |
| ) | |
| elif config.model_params["model_name"].lower() == "resnet": | |
| model = ResNetSpeakerEncoder( | |
| input_dim=config.model_params["input_dim"], | |
| proj_dim=config.model_params["proj_dim"], | |
| log_input=config.model_params.get("log_input", False), | |
| use_torch_spec=config.model_params.get("use_torch_spec", False), | |
| audio_config=config.audio, | |
| ) | |
| return model | |