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egs/wsj/s5/steps/data/augment_data_dir.py
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#!/usr/bin/env python3
# Copyright 2017 David Snyder
# 2017 Ye Bai
# 2019 Phani Sankar Nidadavolu
# Apache 2.0
#
# This script generates augmented data. It is based on
# steps/data/reverberate_data_dir.py but doesn't handle reverberation.
# It is designed to be somewhat simpler and more flexible for augmenting with
# additive noise.
from __future__ import print_function
import sys, random, argparse, os, imp
sys.path.append("steps/data/")
sys.path.insert(0, 'steps/')
from reverberate_data_dir import parse_file_to_dict
from reverberate_data_dir import write_dict_to_file
import libs.common as common_lib
data_lib = imp.load_source('dml', 'steps/data/data_dir_manipulation_lib.py')
def get_args():
parser = argparse.ArgumentParser(description="Augment the data directory with additive noises. "
"Noises are separated into background and foreground noises which are added together or "
"separately. Background noises are added to the entire recording, and repeated as necessary "
"to cover the full length. Multiple overlapping background noises can be added, to simulate "
"babble, for example. Foreground noises are added sequentially, according to a specified "
"interval. See also steps/data/reverberate_data_dir.py "
"Usage: augment_data_dir.py [options...] <in-data-dir> <out-data-dir> "
"E.g., steps/data/augment_data_dir.py --utt-suffix aug --fg-snrs 20:10:5:0 --bg-snrs 20:15:10 "
"--num-bg-noise 1:2:3 --fg-interval 3 --fg-noise-dir data/musan_noise --bg-noise-dir "
"data/musan_music data/train data/train_aug", formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--fg-snrs', type=str, dest = "fg_snr_str", default = '20:10:0',
help='When foreground noises are being added, the script will iterate through these SNRs.')
parser.add_argument('--bg-snrs', type=str, dest = "bg_snr_str", default = '20:10:0',
help='When background noises are being added, the script will iterate through these SNRs.')
parser.add_argument('--num-bg-noises', type=str,
dest = "num_bg_noises", default = '1',
help='Number of overlapping background noises that we iterate over.'
' For example, if the input is "1:2:3" then the output wavs will have either '
'1, 2, or 3 randomly chosen background noises overlapping the entire recording')
parser.add_argument('--fg-interval', type=int,
dest = "fg_interval", default = 0,
help='Number of seconds between the end of one '
'foreground noise and the beginning of the next.')
parser.add_argument('--utt-suffix', type=str,
dest = "utt_suffix", default = None,
help='Suffix added to utterance IDs.')
parser.add_argument('--utt-prefix', type=str,
dest = "utt_prefix", default = None,
help='Prefix added to utterance IDs.')
parser.add_argument('--random-seed', type=int, dest = "random_seed",
default = 123, help='Random seed.')
parser.add_argument("--modify-spk-id", type=str,
dest='modify_spk_id', default=False,
action=common_lib.StrToBoolAction,
choices=["true", "false"],
help='Utt prefix or suffix would be added to the spk id '
'also (used in ASR), in speaker id it is left unmodifed')
parser.add_argument("--bg-noise-dir", type=str, dest="bg_noise_dir",
help="Background noise data directory")
parser.add_argument("--fg-noise-dir", type=str, dest="fg_noise_dir",
help="Foreground noise data directory")
parser.add_argument("input_dir", help="Input data directory")
parser.add_argument("output_dir", help="Output data directory")
print(' '.join(sys.argv))
args = parser.parse_args()
args = check_args(args)
return args
def check_args(args):
# Check args
if args.utt_suffix is None and args.utt_prefix is None:
args.utt_modifier_type = None
args.utt_modifier = ""
elif args.utt_suffix is None and args.utt_prefix is not None:
args.utt_modifier_type = "prefix"
args.utt_modifier = args.utt_prefix
elif args.utt_suffix is not None and args.utt_prefix is None:
args.utt_modifier_type = "suffix"
args.utt_modifier = args.utt_suffix
else:
raise Exception("Trying to add both prefix and suffix. Choose either of them")
if not os.path.exists(args.output_dir):
os.makedirs(args.output_dir)
if not args.fg_interval >= 0:
raise Exception("--fg-interval must be 0 or greater")
if args.bg_noise_dir is None and args.fg_noise_dir is None:
raise Exception("Either --fg-noise-dir or --bg-noise-dir must be specified")
return args
def get_noise_list(noise_wav_scp_filename):
noise_wav_scp_file = open(noise_wav_scp_filename, 'r').readlines()
noise_wavs = {}
noise_utts = []
for line in noise_wav_scp_file:
toks=line.split(" ")
wav = " ".join(toks[1:])
noise_utts.append(toks[0])
noise_wavs[toks[0]] = wav.rstrip()
return noise_utts, noise_wavs
def augment_wav(utt, wav, dur, fg_snr_opts, bg_snr_opts, fg_noise_utts, \
bg_noise_utts, noise_wavs, noise2dur, interval, num_opts):
# This section is common to both foreground and background noises
new_wav = ""
dur_str = str(dur)
noise_dur = 0
tot_noise_dur = 0
snrs=[]
noises=[]
start_times=[]
# Now handle the background noises
if len(bg_noise_utts) > 0:
num = random.choice(num_opts)
for i in range(0, num):
noise_utt = random.choice(bg_noise_utts)
noise = "wav-reverberate --duration=" \
+ dur_str + " \"" + noise_wavs[noise_utt] + "\" - |"
snr = random.choice(bg_snr_opts)
snrs.append(snr)
start_times.append(0)
noises.append(noise)
# Now handle the foreground noises
if len(fg_noise_utts) > 0:
while tot_noise_dur < dur:
noise_utt = random.choice(fg_noise_utts)
noise = noise_wavs[noise_utt]
snr = random.choice(fg_snr_opts)
snrs.append(snr)
noise_dur = noise2dur[noise_utt]
start_times.append(tot_noise_dur)
tot_noise_dur += noise_dur + interval
noises.append(noise)
start_times_str = "--start-times='" + ",".join([str(i) for i in start_times]) + "'"
snrs_str = "--snrs='" + ",".join([str(i) for i in snrs]) + "'"
noises_str = "--additive-signals='" + ",".join(noises).strip() + "'"
# If the wav is just a file
if wav.strip()[-1] != "|":
new_wav = "wav-reverberate --shift-output=true " + noises_str + " " \
+ start_times_str + " " + snrs_str + " " + wav + " - |"
# Else if the wav is in a pipe
else:
new_wav = wav + " wav-reverberate --shift-output=true " + noises_str + " " \
+ start_times_str + " " + snrs_str + " - - |"
return new_wav
def get_new_id(utt, utt_modifier_type, utt_modifier):
""" This function generates a new id from the input id
This is needed when we have to create multiple copies of the original data
E.g. get_new_id("swb0035", prefix="rvb", copy=1) returns a string "rvb1_swb0035"
"""
if utt_modifier_type == "suffix" and len(utt_modifier) > 0:
new_utt = utt + "-" + utt_modifier
elif utt_modifier_type == "prefix" and len(utt_modifier) > 0:
new_utt = utt_modifier + "-" + utt
else:
new_utt = utt
return new_utt
def copy_file_if_exists(input_file, output_file, utt_modifier_type,
utt_modifier, fields=[0]):
if os.path.isfile(input_file):
clean_dict = parse_file_to_dict(input_file,
value_processor = lambda x: " ".join(x))
new_dict = {}
for key in clean_dict.keys():
modified_key = get_new_id(key, utt_modifier_type, utt_modifier)
if len(fields) > 1:
values = clean_dict[key].split(" ")
modified_values = values
for idx in range(1, len(fields)):
modified_values[idx-1] = get_new_id(values[idx-1],
utt_modifier_type, utt_modifier)
new_dict[modified_key] = " ".join(modified_values)
else:
new_dict[modified_key] = clean_dict[key]
write_dict_to_file(new_dict, output_file)
def create_augmented_utt2uniq(input_dir, output_dir,
utt_modifier_type, utt_modifier):
clean_utt2spk_file = input_dir + "/utt2spk"
clean_utt2spk_dict = parse_file_to_dict(clean_utt2spk_file,
value_processor = lambda x: " ".join(x))
augmented_utt2uniq_dict = {}
for key in clean_utt2spk_dict.keys():
modified_key = get_new_id(key, utt_modifier_type, utt_modifier)
augmented_utt2uniq_dict[modified_key] = key
write_dict_to_file(augmented_utt2uniq_dict, output_dir + "/utt2uniq")
def main():
args = get_args()
input_dir = args.input_dir
output_dir = args.output_dir
fg_snrs = [int(i) for i in args.fg_snr_str.split(":")]
bg_snrs = [int(i) for i in args.bg_snr_str.split(":")]
num_bg_noises = [int(i) for i in args.num_bg_noises.split(":")]
reco2dur = parse_file_to_dict(input_dir + "/reco2dur",
value_processor = lambda x: float(x[0]))
wav_scp_file = open(input_dir + "/wav.scp", 'r').readlines()
noise_wavs = {}
noise_reco2dur = {}
bg_noise_utts = []
fg_noise_utts = []
# Load background noises
if args.bg_noise_dir:
bg_noise_wav_filename = args.bg_noise_dir + "/wav.scp"
bg_noise_utts, bg_noise_wavs = get_noise_list(bg_noise_wav_filename)
bg_noise_reco2dur = parse_file_to_dict(args.bg_noise_dir + "/reco2dur",
value_processor = lambda x: float(x[0]))
noise_wavs.update(bg_noise_wavs)
noise_reco2dur.update(bg_noise_reco2dur)
# Load foreground noises
if args.fg_noise_dir:
fg_noise_wav_filename = args.fg_noise_dir + "/wav.scp"
fg_noise_reco2dur_filename = args.fg_noise_dir + "/reco2dur"
fg_noise_utts, fg_noise_wavs = get_noise_list(fg_noise_wav_filename)
fg_noise_reco2dur = parse_file_to_dict(args.fg_noise_dir + "/reco2dur",
value_processor = lambda x: float(x[0]))
noise_wavs.update(fg_noise_wavs)
noise_reco2dur.update(fg_noise_reco2dur)
random.seed(args.random_seed)
new_utt2wav = {}
new_utt2spk = {}
# Augment each line in the wav file
for line in wav_scp_file:
toks = line.rstrip().split(" ")
utt = toks[0]
wav = " ".join(toks[1:])
dur = reco2dur[utt]
new_wav = augment_wav(utt, wav, dur, fg_snrs, bg_snrs, fg_noise_utts,
bg_noise_utts, noise_wavs, noise_reco2dur, args.fg_interval,
num_bg_noises)
new_utt = get_new_id(utt, args.utt_modifier_type, args.utt_modifier)
new_utt2wav[new_utt] = new_wav
if not os.path.exists(output_dir):
os.makedirs(output_dir)
write_dict_to_file(new_utt2wav, output_dir + "/wav.scp")
copy_file_if_exists(input_dir + "/reco2dur", output_dir + "/reco2dur",
args.utt_modifier_type, args.utt_modifier)
copy_file_if_exists(input_dir + "/utt2dur", output_dir + "/utt2dur",
args.utt_modifier_type, args.utt_modifier)
# Check whether to modify the speaker id or not while creating utt2spk file
fields = ([0, 1] if args.modify_spk_id else [0])
copy_file_if_exists(input_dir + "/utt2spk", output_dir + "/utt2spk",
args.utt_modifier_type, args.utt_modifier, fields=fields)
copy_file_if_exists(input_dir + "/utt2lang", output_dir + "/utt2lang",
args.utt_modifier_type, args.utt_modifier)
copy_file_if_exists(input_dir + "/utt2num_frames", output_dir + "/utt2num_frames",
args.utt_modifier_type, args.utt_modifier)
copy_file_if_exists(input_dir + "/text", output_dir + "/text", args.utt_modifier_type,
args.utt_modifier)
copy_file_if_exists(input_dir + "/segments", output_dir + "/segments",
args.utt_modifier_type, args.utt_modifier, fields=[0, 1])
copy_file_if_exists(input_dir + "/vad.scp", output_dir + "/vad.scp",
args.utt_modifier_type, args.utt_modifier)
copy_file_if_exists(input_dir + "/reco2file_and_channel",
output_dir + "/reco2file_and_channel",
args.utt_modifier_type, args.utt_modifier, fields=[0, 1])
if args.modify_spk_id:
copy_file_if_exists(input_dir + "/spk2gender", output_dir + "/spk2gender",
args.utt_modifier_type, args.utt_modifier)
else:
copy_file_if_exists(input_dir + "/spk2gender", output_dir + "/spk2gender", None, "")
# Create utt2uniq file
if os.path.isfile(input_dir + "/utt2uniq"):
copy_file_if_exists(input_dir + "/utt2uniq", output_dir + "/utt2uniq",
args.utt_modifier_type, args.utt_modifier, fields=[0])
else:
create_augmented_utt2uniq(input_dir, output_dir,
args.utt_modifier_type, args.utt_modifier)
data_lib.RunKaldiCommand("utils/utt2spk_to_spk2utt.pl <{output_dir}/utt2spk >{output_dir}/spk2utt"
.format(output_dir = output_dir))
data_lib.RunKaldiCommand("utils/fix_data_dir.sh {output_dir}".format(output_dir = output_dir))
if __name__ == "__main__":
main()
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