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Commit 4a20c412 authored by Peter Albert's avatar Peter Albert Committed by Facebook GitHub Bot
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Remove obsolete examples (#2655) 

Summary:
Pull Request resolved: https://github.com/pytorch/audio/pull/2655

Removed obsolete example and the corresponding test

Reviewed By: mthrok

Differential Revision: D39260253

fbshipit-source-id: 0bde71ffd75dd0c94a5cc4a9940f4648a5d61bd7
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examples/interactive_asr/README.md deleted 100644 → 0
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⚠️⚠️⚠️ THIS EXAMPLE IS NOT MAINTAINED ⚠️⚠️⚠️
# asr-demo
To run this demo, you need the following libraries
- [python3](https://www.python.org/download/releases/3.0/)
- [pyaudio](https://people.csail.mit.edu/hubert/pyaudio/)
- [torchaudio](https://github.com/pytorch/audio/tree/master/torchaudio)
- [pytorch](https://pytorch.org/)
- [librosa](https://librosa.github.io/librosa/)
- [fairseq](https://github.com/pytorch/fairseq) (clone the github repository)
and the following models
- [dictionary](https://download.pytorch.org/models/audio/dict.txt)
- [sentence piece model](https://download.pytorch.org/models/audio/spm.model)
- [model](https://download.pytorch.org/models/audio/checkpoint_avg_60_80.pt)
## Installation
We recommend that you use [conda](https://docs.conda.io/en/latest/miniconda.html) to install the dependencies when available.
```bash
# Assume that all commands are from the examples folder
cd examples
# Install dependencies
conda install -c pytorch torchaudio
conda install -c conda-forge librosa
conda install pyaudio
pip install sentencepiece
# Install fairseq from source
git clone https://github.com/pytorch/fairseq interactive_asr/fairseq
pushd interactive_asr/fairseq
export CFLAGS='-stdlib=libc++' # For Mac only
pip install --editable .
popd
# Install dictionary, sentence piece model, and model
wget -O interactive_asr/data/dict.txt https://download.pytorch.org/models/audio/dict.txt
wget -O interactive_asr/data/spm.model https://download.pytorch.org/models/audio/spm.model
wget -O interactive_asr/data/model.pt https://download.pytorch.org/models/audio/checkpoint_avg_60_80.pt
```
## Run
On a file
```bash
INPUT_FILE=interactive_asr/data/sample.wav
python -m interactive_asr.asr interactive_asr/data --input_file $INPUT_FILE --max-tokens 10000000 --nbest 1 \
--path interactive_asr/data/model.pt --beam 40 --task speech_recognition \
--user-dir interactive_asr/fairseq/examples/speech_recognition
```
As a microphone
```bash
python -m interactive_asr.asr interactive_asr/data --max-tokens 10000000 --nbest 1 \
--path interactive_asr/data/model.pt --beam 40 --task speech_recognition \
--user-dir interactive_asr/fairseq/examples/speech_recognition
```
To run the testcase associated with this example
```bash
ASR_MODEL_PATH=interactive_asr/data/model.pt \
ASR_INPUT_FILE=interactive_asr/data/sample.wav \
ASR_DATA_PATH=interactive_asr/data \
ASR_USER_DIR=interactive_asr/fairseq/examples/speech_recognition \
python -m unittest test/test_interactive_asr.py
```
examples/interactive_asr/__init__.py deleted 100644 → 0
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from . import utils, vad
__all__ = ["utils", "vad"]
examples/interactive_asr/asr.py deleted 100644 → 0
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#!/usr/bin/env python3
# Copyright (c) 2017-present, Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under the license found in the LICENSE file in
# the root directory of this source tree. An additional grant of patent rights
# can be found in the PATENTS file in the same directory.
"""
Run inference for pre-processed data with a trained model.
"""
import datetime as dt
import logging
from fairseq import options
from interactive_asr.utils import add_asr_eval_argument, get_microphone_transcription, setup_asr, transcribe_file
def main(args):
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
task, generator, models, sp, tgt_dict = setup_asr(args, logger)
print("READY!")
if args.input_file:
transcription_time, transcription = transcribe_file(args, task, generator, models, sp, tgt_dict)
print("transcription:", transcription)
print("transcription_time:", transcription_time)
else:
for transcription in get_microphone_transcription(args, task, generator, models, sp, tgt_dict):
print("{}: {}".format(dt.datetime.now().strftime("%H:%M:%S"), transcription[0][0]))
def cli_main():
parser = options.get_generation_parser()
parser = add_asr_eval_argument(parser)
args = options.parse_args_and_arch(parser)
main(args)
if __name__ == "__main__":
cli_main()
examples/interactive_asr/utils.py deleted 100644 → 0
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#!/usr/bin/env python3
# Copyright (c) 2017-present, Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under the license found in the LICENSE file in
# the root directory of this source tree. An additional grant of patent rights
# can be found in the PATENTS file in the same directory.
import os
import sys
import time
import sentencepiece as spm
import torch
import torchaudio
from fairseq import tasks
from fairseq.utils import import_user_module, load_ensemble_for_inference
from interactive_asr.vad import get_microphone_chunks
def add_asr_eval_argument(parser):
parser.add_argument("--input_file", help="input file")
parser.add_argument("--ctc", action="store_true", help="decode a ctc model")
parser.add_argument("--rnnt", default=False, help="decode a rnnt model")
parser.add_argument("--kspmodel", default=None, help="sentence piece model")
parser.add_argument("--wfstlm", default=None, help="wfstlm on dictonary output units")
parser.add_argument(
"--rnnt_decoding_type",
default="greedy",
help="wfstlm on dictonary output units",
)
parser.add_argument(
"--lm_weight",
default=0.2,
help="weight for wfstlm while interpolating with neural score",
)
parser.add_argument("--rnnt_len_penalty", default=-0.5, help="rnnt length penalty on word level")
return parser
def check_args(args):
assert args.path is not None, "--path required for generation!"
assert not args.sampling or args.nbest == args.beam, "--sampling requires --nbest to be equal to --beam"
assert args.replace_unk is None or args.raw_text, "--replace-unk requires a raw text dataset (--raw-text)"
def process_predictions(args, hypos, sp, tgt_dict):
res = []
device = torch.device("cuda:0" if torch.cuda.is_available() and not args.cpu else "cpu")
for hypo in hypos[: min(len(hypos), args.nbest)]:
hyp_pieces = tgt_dict.string(hypo["tokens"].int().to(device))
hyp_words = sp.DecodePieces(hyp_pieces.split())
res.append(hyp_words)
return res
def optimize_models(args, use_cuda, models):
"""Optimize ensemble for generation"""
for model in models:
model.make_generation_fast_(
beamable_mm_beam_size=None if args.no_beamable_mm else args.beam,
need_attn=args.print_alignment,
)
if args.fp16:
model.half()
if use_cuda:
model.cuda()
def calc_mean_invstddev(feature):
if len(feature.shape) != 2:
raise ValueError("We expect the input feature to be 2-D tensor")
mean = torch.mean(feature, dim=0)
var = torch.var(feature, dim=0)
# avoid division by ~zero
if (var < sys.float_info.epsilon).any():
return mean, 1.0 / (torch.sqrt(var) + sys.float_info.epsilon)
return mean, 1.0 / torch.sqrt(var)
def calcMN(features):
mean, invstddev = calc_mean_invstddev(features)
res = (features - mean) * invstddev
return res
def transcribe(waveform, args, task, generator, models, sp, tgt_dict):
num_features = 80
output = torchaudio.compliance.kaldi.fbank(waveform, num_mel_bins=num_features)
device = torch.device("cuda:0" if torch.cuda.is_available() and not args.cpu else "cpu")
output_cmvn = calcMN(output.to(device).detach())
# size (m, n)
source = output_cmvn
frames_lengths = torch.LongTensor([source.size(0)])
# size (1, m, n). In general, if source is (x, m, n), then hypos is (x, ...)
source.unsqueeze_(0)
sample = {"net_input": {"src_tokens": source, "src_lengths": frames_lengths}}
hypos = task.inference_step(generator, models, sample)
assert len(hypos) == 1
transcription = []
for i in range(len(hypos)):
# Process top predictions
hyp_words = process_predictions(args, hypos[i], sp, tgt_dict)
transcription.append(hyp_words)
return transcription
def setup_asr(args, logger):
check_args(args)
import_user_module(args)
if args.max_tokens is None and args.batch_size is None:
args.max_tokens = 30000
logger.info(args)
use_cuda = torch.cuda.is_available() and not args.cpu
# Load dataset splits
task = tasks.setup_task(args)
# Set dictionary
tgt_dict = task.target_dictionary
if args.ctc or args.rnnt:
tgt_dict.add_symbol("<ctc_blank>")
if args.ctc:
logger.info("| decoding a ctc model")
if args.rnnt:
logger.info("| decoding a rnnt model")
# Load ensemble
logger.info("| loading model(s) from {}".format(args.path))
models, _model_args = load_ensemble_for_inference(
args.path.split(":"),
task,
model_arg_overrides=eval(args.model_overrides), # noqa
)
optimize_models(args, use_cuda, models)
# Initialize generator
generator = task.build_generator(models, args)
sp = spm.SentencePieceProcessor()
sp.Load(os.path.join(args.data, "spm.model"))
return task, generator, models, sp, tgt_dict
def transcribe_file(args, task, generator, models, sp, tgt_dict):
path = args.input_file
if not os.path.exists(path):
raise FileNotFoundError("Audio file not found: {}".format(path))
waveform, sample_rate = torchaudio.load_wav(path)
waveform = waveform.mean(0, True)
waveform = torchaudio.transforms.Resample(orig_freq=sample_rate, new_freq=16000)(waveform)
start = time.time()
transcription = transcribe(waveform, args, task, generator, models, sp, tgt_dict)
transcription_time = time.time() - start
return transcription_time, transcription
def get_microphone_transcription(args, task, generator, models, sp, tgt_dict):
for (waveform, sample_rate) in get_microphone_chunks():
waveform = torchaudio.transforms.Resample(orig_freq=sample_rate, new_freq=16000)(waveform.reshape(1, -1))
transcription = transcribe(waveform, args, task, generator, models, sp, tgt_dict)
yield transcription
examples/interactive_asr/vad.py deleted 100644 → 0
View file @ 95eada24
#!/usr/bin/env python3
# Copyright (c) 2017-present, Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under the license found in the LICENSE file in
# the root directory of this source tree. An additional grant of patent rights
# can be found in the PATENTS file in the same directory.
"""
Following `a simple but efficient real-time voice activity detection algorithm
<https://www.eurasip.org/Proceedings/Eusipco/Eusipco2009/contents/papers/1569192958.pdf>`__.
There are three criteria to decide if a frame contains speech: energy, most
dominant frequency, and spectral flatness. If any two of those are higher than
a minimum plus a threshold, then the frame contains speech. In the offline
case, the list of frames is postprocessed to remove too short silence and
speech sequences. In the online case here, inertia is added before switching
from speech to silence or vice versa.
"""
import queue
from collections import deque
import librosa
import numpy as np
import pyaudio
import torch
import torchaudio
def compute_spectral_flatness(frame, epsilon=0.01):
# epsilon protects against log(0)
geometric_mean = torch.exp((frame + epsilon).log().mean(-1)) - epsilon
arithmetic_mean = frame.mean(-1)
return -10 * torch.log10(epsilon + geometric_mean / arithmetic_mean)
class VoiceActivityDetection:
def __init__(
self,
num_init_frames=30,
ignore_silent_count=4,
ignore_speech_count=1,
energy_prim_thresh=60,
frequency_prim_thresh=10,
spectral_flatness_prim_thresh=3,
verbose=False,
):
self.num_init_frames = num_init_frames
self.ignore_silent_count = ignore_silent_count
self.ignore_speech_count = ignore_speech_count
self.energy_prim_thresh = energy_prim_thresh
self.frequency_prim_thresh = frequency_prim_thresh
self.spectral_flatness_prim_thresh = spectral_flatness_prim_thresh
self.verbose = verbose
self.speech_mark = True
self.silence_mark = False
self.silent_count = 0
self.speech_count = 0
self.n = 0
if self.verbose:
self.energy_list = []
self.frequency_list = []
self.spectral_flatness_list = []
def iter(self, frame):
frame_fft = torch.rfft(frame, 1)
amplitudes = torchaudio.functional.complex_norm(frame_fft)
# Compute frame energy
energy = frame.pow(2).sum(-1)
# Most dominant frequency component
frequency = amplitudes.argmax()
# Spectral flatness measure
spectral_flatness = compute_spectral_flatness(amplitudes)
if self.verbose:
self.energy_list.append(energy)
self.frequency_list.append(frequency)
self.spectral_flatness_list.append(spectral_flatness)
if self.n == 0:
self.min_energy = energy
self.min_frequency = frequency
self.min_spectral_flatness = spectral_flatness
elif self.n < self.num_init_frames:
self.min_energy = min(energy, self.min_energy)
self.min_frequency = min(frequency, self.min_frequency)
self.min_spectral_flatness = min(spectral_flatness, self.min_spectral_flatness)
self.n += 1
# Add 1. to avoid log(0)
thresh_energy = self.energy_prim_thresh * torch.log(1.0 + self.min_energy)
thresh_frequency = self.frequency_prim_thresh
thresh_spectral_flatness = self.spectral_flatness_prim_thresh
# Check all three conditions
counter = 0
if energy - self.min_energy >= thresh_energy:
counter += 1
if frequency - self.min_frequency >= thresh_frequency:
counter += 1
if spectral_flatness - self.min_spectral_flatness >= thresh_spectral_flatness:
counter += 1
# Detection
if counter > 1:
# Speech detected
self.speech_count += 1
# Inertia against switching
if self.n >= self.num_init_frames and self.speech_count <= self.ignore_speech_count:
# Too soon to change
return self.silence_mark
else:
self.silent_count = 0
return self.speech_mark
else:
# Silence detected
self.min_energy = ((self.silent_count * self.min_energy) + energy) / (self.silent_count + 1)
self.silent_count += 1
# Inertia against switching
if self.n >= self.num_init_frames and self.silent_count <= self.ignore_silent_count:
# Too soon to change
return self.speech_mark
else:
self.speech_count = 0
return self.silence_mark
class MicrophoneStream:
"""Opens a recording stream as a generator yielding the audio chunks."""
def __init__(self, device=None, rate=22050, chunk=2205):
"""
The 22050 is the librosa default, which is what our models were
trained on. The ratio of [chunk / rate] is the amount of time between
audio samples - for example, with these defaults,
an audio fragment will be processed every tenth of a second.
"""
self._rate = rate
self._chunk = chunk
self._device = device
# Create a thread-safe buffer of audio data
self._buff = queue.Queue()
self.closed = True
def __enter__(self):
self._audio_interface = pyaudio.PyAudio()
self._audio_stream = self._audio_interface.open(
# format=pyaudio.paInt16,
format=pyaudio.paFloat32,
# The API currently only supports 1-channel (mono) audio
# https://goo.gl/z757pE
channels=1,
rate=self._rate,
input=True,
frames_per_buffer=self._chunk,
input_device_index=self._device,
# Run the audio stream asynchronously to fill the buffer object.
# This is necessary so that the input device's buffer doesn't
# overflow while the calling thread makes network requests, etc.
stream_callback=self._fill_buffer,
)
self.closed = False
return self
def __exit__(self, type, value, traceback):
self._audio_stream.stop_stream()
self._audio_stream.close()
self.closed = True
# Signal the generator to terminate so that the client's
# streaming_recognize method will not block the process termination.
self._buff.put(None)
self._audio_interface.terminate()
def _fill_buffer(self, in_data, frame_count, time_info, status_flags):
"""Continuously collect data from the audio stream, into the buffer."""
self._buff.put(in_data)
return None, pyaudio.paContinue
def generator(self):
while not self.closed:
# Use a blocking get() to ensure there's at least one chunk of
# data, and stop iteration if the chunk is None, indicating the
# end of the audio stream.
chunk = self._buff.get()
if chunk is None:
return
data = [chunk]
# Now consume whatever other data's still buffered.
while True:
try:
chunk = self._buff.get(block=False)
if chunk is None:
return
data.append(chunk)
except queue.Empty:
break
ans = np.fromstring(b"".join(data), dtype=np.float32)
# yield uniform-sized chunks
ans = np.split(ans, np.shape(ans)[0] / self._chunk)
# Resample the audio to 22050, librosa default
for chunk in ans:
yield librosa.core.resample(chunk, self._rate, 22050)
def get_microphone_chunks(
min_to_cumulate=5, # 0.5 seconds
max_to_cumulate=100, # 10 seconds
precumulate=5,
max_to_visualize=100,
):
vad = VoiceActivityDetection()
cumulated = []
precumulated = deque(maxlen=precumulate)
with MicrophoneStream() as stream:
audio_generator = stream.generator()
chunk_length = stream._chunk
waveform = torch.zeros(max_to_visualize * chunk_length)
for chunk in audio_generator:
# Is speech?
chunk = torch.tensor(chunk)
is_speech = vad.iter(chunk)
# Cumulate speech
if is_speech or cumulated:
cumulated.append(chunk)
else:
precumulated.append(chunk)
if (not is_speech and len(cumulated) >= min_to_cumulate) or (len(cumulated) > max_to_cumulate):
waveform = torch.cat(list(precumulated) + cumulated, -1)
yield (waveform * stream._rate, stream._rate)
cumulated = []
precumulated = deque(maxlen=precumulate)
examples/test/test_interactive_asr.py deleted 100644 → 0
View file @ 95eada24
import argparse
import logging
import os
import unittest
from interactive_asr.utils import setup_asr, transcribe_file
class ASRTest(unittest.TestCase):
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
arguments_dict = {
"path": "/scratch/jamarshon/downloads/model.pt",
"input_file": "/scratch/jamarshon/audio/examples/interactive_asr/data/sample.wav",
"data": "/scratch/jamarshon/downloads",
"user_dir": "/scratch/jamarshon/fairseq-py/examples/speech_recognition",
"no_progress_bar": False,
"log_interval": 1000,
"log_format": None,
"tensorboard_logdir": "",
"tbmf_wrapper": False,
"seed": 1,
"cpu": True,
"fp16": False,
"memory_efficient_fp16": False,
"fp16_init_scale": 128,
"fp16_scale_window": None,
"fp16_scale_tolerance": 0.0,
"min_loss_scale": 0.0001,
"threshold_loss_scale": None,
"criterion": "cross_entropy",
"tokenizer": None,
"bpe": None,
"optimizer": "nag",
"lr_scheduler": "fixed",
"task": "speech_recognition",
"num_workers": 0,
"skip_invalid_size_inputs_valid_test": False,
"max_tokens": 10000000,
"max_sentences": None,
"required_batch_size_multiple": 8,
"dataset_impl": None,
"gen_subset": "test",
"num_shards": 1,
"shard_id": 0,
"remove_bpe": None,
"quiet": False,
"model_overrides": "{}",
"results_path": None,
"beam": 40,
"nbest": 1,
"max_len_a": 0,
"max_len_b": 200,
"min_len": 1,
"match_source_len": False,
"no_early_stop": False,
"unnormalized": False,
"no_beamable_mm": False,
"lenpen": 1,
"unkpen": 0,
"replace_unk": None,
"sacrebleu": False,
"score_reference": False,
"prefix_size": 0,
"no_repeat_ngram_size": 0,
"sampling": False,
"sampling_topk": -1,
"sampling_topp": -1.0,
"temperature": 1.0,
"diverse_beam_groups": -1,
"diverse_beam_strength": 0.5,
"print_alignment": False,
"ctc": False,
"rnnt": False,
"kspmodel": None,
"wfstlm": None,
"rnnt_decoding_type": "greedy",
"lm_weight": 0.2,
"rnnt_len_penalty": -0.5,
"momentum": 0.99,
"weight_decay": 0.0,
"force_anneal": None,
"lr_shrink": 0.1,
"warmup_updates": 0,
}
arguments_dict["path"] = os.environ.get("ASR_MODEL_PATH", None)
arguments_dict["input_file"] = os.environ.get("ASR_INPUT_FILE", None)
arguments_dict["data"] = os.environ.get("ASR_DATA_PATH", None)
arguments_dict["user_dir"] = os.environ.get("ASR_USER_DIR", None)
args = argparse.Namespace(**arguments_dict)
def test_transcribe_file(self):
task, generator, models, sp, tgt_dict = setup_asr(self.args, self.logger)
_, transcription = transcribe_file(self.args, task, generator, models, sp, tgt_dict)
expected_transcription = [["THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG"]]
self.assertEqual(transcription, expected_transcription, msg=str(transcription))
if __name__ == "__main__":
unittest.main()
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